two component polyurethane adhesive

The polyol blend had a viscosity of 12,880 mPa.s at 25° C. and an equivalent weight of 271. Suitable polyisocyanates include aliphatic, cycloaliphatic, araliphatic, aromatic, and heterocyclic polyisocyanates of the type described, for example, by W. Siefken in Justus Liebios Annalen der Chemie, 562, pages 75 to 136. 3,492,330: and perchlorinated aryl polyisocyanates of the type described, for example, in U.S. Pat. Two Component Polyurethane Adhesive Market Insights 2019, Global and Chinese Scenario is a professional and in-depth study on the current state of the global Two Component Polyurethane Adhesive industry with a focus on the Chinese market. The surface of the FRP was wiped with a dry cloth prior to bonding to remove dust. European Patent Application 304,083 discloses an isocyanate component containing a blend of an aliphatic isocyanate and an aromatic isocyanate prepolymer and a curative component containing a polyfunctional polyether polyol having a hydroxyl number of from 100 to 1200 (corresponding to equivalent weights of about 45 to about 561), a diamine, and an optional catalyst. Similar products are also described in U.S. Pat. Application of Two Component Polyurethane (PU) Adhesives for Assembling Automotive Parts a historic prospective • Past history – Mainly used at Original Equipment Suppliers (OES) – Sunroof modules – For commercial vehicles e.g. They are used to bond materials with different flexibility or different thermal coefficients of expansion including glass to metal, fiber reinforced plastic (FRP) to metal, and aluminum to steel. Suitable polyol polyethers for use in component (b)(i) also include the so-called polymer polyols, which are prepared by polymerizing styrene and acrylonitrile in the presence of a polyether. The adhesive was cured in a heated press for 90 seconds at a temperature of 135° C., followed by a postcure of 30 minutes at 135° C. Test specimens (1 inch, or 2.5 cm, wide) were cut from the cured samples using a diamond tipped saw. (a) a low-viscosity isocyanate component in a quantity sufficient to provide an isocyanate index of about 100 to about 150 comprising an organic polyisocyanate wherein up to 10 equivalent percent of the isocyanate groups of said organic polyisocyanate have been modified by reaction with one or more isocyanate-reactive compounds; and, (b) a low-viscosity curative component comprising. 3,383,351, 3,304,273, 3,523,093, and 3,110,695 and German Patent 1,152,536) are also suitable, as are polybutadienes containing hydroxyl groups. Those skilled in the art will readily understand that known variations of the conditions and processes of the following preparative procedures can be used to prepare these compositions. (iii) one or more isocyanate-reactive diamines or triamines having a molecular weight in the range of 62 to 400 in a quantity sufficient to produce adequate resistance to flow when components (a) and (b) are mixed; wherein at least one of components (a) or (b) contains at least one filler in a quantity of from about 10 to about 40 percent by weight based on the total quantity of the filled polyurethane adhesive. In contrast to the present invention, the European application does not suggest the importance of using a curative component containing both a relatively high equivalent weight polyether polyol and a relatively low equivalent weight diol-containing chain extender or crosslinker and is entirely silent as to the use of aromatic amine terminated polyethers. Fuller, Toyo Ink Group, Qingdao Yutian, Zhejiang … U.S. Pat. Tests were conducted using the formulations listed in the Table. 3,124,605 and 3,201,372, and in British Patent 889,050; and modified polyisocyanates containing carbodiimide groups of the type described in U.S. Pat. These results show that formulations containing the combination of a high equivalent weight polyol and a low equivalent weight chain extender exhibit superior adhesive performance, especially in the critical 82° C. lap shear test. wind deflectors, tractor roofs – One component PU adhesives preferred by Original Equipment manufacturers (OEM) 4,156,064), the preferred urethane adhesives are typically two-component urethane-based adhesives comprised of an isocyanate component and an isocyanate-reactive curative component. A most preferred diamine is bis(4-aminocyclohexyl)methane. These mixtures should preferably contain (on a statistical average) two to three isocyanate-reactive amino end groups. No. No. Aromatic diamines are suitable but less preferred for use as component (b)(iii). For example, the addition of certain amide acetals to the curative component improves adhesive properties by inhibiting foaming. Often additives are not required to provide flexibility or toughness as in the case of epoxy formulations. The polyol blend had a viscosity of 8860 mPa.s at 25° C. and an equivalent weight of 394. U.S. Pat. (iii) one or more isocyanate-reactive diamines or triamines having a molecular weight in the range of about 62 to 400 in a quantity sufficient to produce adequate resistance to flow when components (a) and (b) are mixed; wherein at least one of components (a) or (b) contains at least one filler in a quantity of from about 10 to about 40 percent by weight based on the total quantity of filled polyurethane adhesive. & Terms of Use. Preferred amine terminated polyethers are prepared by hydrolyzing an aromatic isocyanate compound having an isocyanate group content of from 0.5 to 40% by weight. 4,386,218, 4,456,730, 4,472,568, 4,501,873, 4,515,923, 4,525,534, 4,540,720, 4,578,500, and 4,565,645; European Patent Application 97,299; and German Offenlegungsschrift 2,948,419, all the disclosures of which are herein incorporated by reference. The pot life for this system is about 2 hours at room temperature. There are 3 different types of polyurethane adhesives or glues: 2 component Polyurethane adhesives (Pur 2C) 1 component Polyurethane adhesives curing by heat (Pur 1C - heat) - Rigid polyurethane 1 component Polyurethane adhesives curing by moisture (Pur 1C - moisture) - Elastic polyurethane Suitable modified polyisocyanates can be prepared by the reaction of organic polyisocyantes such as described above with one or more compounds containing isocyanate-reactive groups, such as hydroxyl, amino, and thiol groups (preferably hydroxyl and/or amino groups) and having a functionality about 2 to about 6 and an equivalent weight greater than about 500, such that up to about 10 (preferably up to 5) equivalent percent of the isocyanate groups have been modified. Examples of such hydroxyl containing chain extenders and crosslinkers include ethylene glycol, 1,2- and 1,3-propanediol, 1,4-butanediol, 1,6-hexanediol, glycerol, trimethylolpropane, pentaerythritol, quinitol, mannitol, diethylene glycol, triethylene glycol, tetraethylene glycol, dipropylene glycol, dibutylene glycol. Bondlines with these chemically-curing 2-C systems harden evenly without any blisters, independent of the available moisture and the layer thickness. Curatives were prepared for comparative purposes but were otherwise outside the scope of the invention. In contrast, polyurethanes made with polyol blends having the same average equivalent weight as those of the invention but composed of blends of intermediate equivalent weight polyols (instead of a high equivalent weight polyol and a low equivalent weight chain extender or crosslinker according to the invention) do not perform well in the high temperature bonding tests described in the examples. No. The term "isocyanate index" is defined as the quotient, multiplied by 100, of the number of isocyanate groups divided by the number of isocyanate-reactive groups. 3,714,127, 3,812,003, 3,935,051, and 4,336,298. Typical aromatic diamines have molecular weights of from about 108 to about 400 and preferably contain exclusively aromatically bound primary or secondary (preferably primary) amino groups. A polyol blend according to the invention was prepared from 85.3 parts of a poly(propylene oxide) triol capped with ethylene oxide (equivalent weight 2000); 14.7 parts of an aromatic amine terminated polyether (equivalent weight 1833) prepared by the hydrolysis of an aromatic isocyanate-terminated polyether polyol; 25 parts of 1,4-butanediol; 2.5 parts of bis(4-aminocyclohexyl)methane (molecular weight 210); 13.3 parts of sodium potassium aluminosilicate in castor oil; 35 parts of talc; and 0.02 parts of dimethyltin dilaurate catalyst. Nos. No. 5,164,473. Other suitable amine terminated polyethers include aminophenoxy-substituted polyethers described, for example, in European Patent Applications 288,825 and 268,849 and U.S. No. They couple the benefits of elastic silane-terminated polymers (MS polymers) with the high strength of epoxy resins. Also suitable for use in component (b)(i) are polyethers terminated with aromatic amino groups, the so-called amine terminated polyethers containing aromatically bound primary or secondary (preferably primary) amino groups. In general, chain extenders are isocyanate-reactive compounds having a functionality of about 2, whereas crosslinkers are isocyanate-reactive compounds having a functionality greater than 2. Ser. In addition, adhesives prepared according to the invention, although used without primer, exhibit excellent high temperature bonding strength. Urethane Adhesives. Higher molecular weight polyols are disclosed but only for the preparation of prepolymers used as the polyisocyanate component. There are different mixing ratios. In most cases, some surface treatment of the bonded parts, such as corona, low-pressure plasma, or flame treatment, is needed. A small quantity of carbon dioxide is released during cure that, usually, has no effect on the bonding process. These polyamines, in which the amino groups are bound to aliphatic carbon atoms, impart sag resistance as well as improved adhesion. No. U.S. Pat. The curing process is predictable and controlled by reaction between the two components. generation, Polyurethane adhesive for a surface treatment-free fiber reinforced plastic, Sag resistant, two component urethane adhesives, Sag resistant urethane adhesives with improved antifoaming property, Polyurea polymers prepared from urea containing prepolymers, Sag resistant at essentially 1:1 ratio two component adhesive, Sag resistant two component adhesive and sealant, Adhesive composition and composite made therewith, Process for the manufacture of polyurethane adhesives, Polyurethane elastomers having improved sag resistance, Polyurethane composition and laminates made therewith, <- Previous Patent (Silicone macromers a...). 07/232,302 (filed Aug. 17, 1988) and 07/389,384 (filed Aug. 2, 1989). The formulation above is for a general purpose two component polyurethane adhesive. Efforts to improve adhesive properties have also focused on the polyol used in the curative component. Traditionally the Duobond range is available in 400ml & 1500ml cartridges, but Dove Technology also has large volume dispensing options available for 40L applications applied through gear pump system – please contact our technical department for further information. In addition, at least one of the two components must contain a filler, preferably talc. 4,336,298 specifically requires the use of polyester or polyether triols having a molecular weight range of about 400 to 1000, which corresponds to an equivalent weight of no more than about 333. 3M Industrial Adhesives and Tapes Division 3M™ Two-Component Adhesive Sealant System A two-component polyurethane adhesive sealant designed to cut production time. Although described as having low viscosities, both adhesive components of the patent are considerably more viscous than those of the present invention. In some cases, a primer is applied before the application of the adhesive. For example, U.S. Pat. & Terms of Use. 07/465,715 filed Jan. 16, 1990, now U.S. Pat. The resin (A) consists of organic compounds with hydroxyl-groups whereas the hardener (B) is based on isocyanates. Relatively high molecular weight compounds containing amino end groups may also be obtained according to German Offenlegungsschrift 2,546,536 or U.S. Pat. Although substantially any such isocyanate-reactive diamine or triamine can be used, the preferred isocyanate-reactive amines are aliphatic, cycloaliphatic, or aromatic diamines having only primary amino groups. All samples were prepared at an isocyanate index of 130. Properties: Two-component silane-epoxy resin adhesives are a unique hybrid system. Examples of such preferred MDI-based polyisocyanates include (i) mixtures of diphenylmethane-2,4'- and/or -4,4'-diisocyanate isomers (preferably having a 2,4'-isomer content of about 5 to about 40 and most preferably 10 to 25 percent by weight), optionally in admixture with polyphenyl polymethylene polyisocyanates, wherein the diphenylmethane diisocyanate isomers comprise from about 20 to 100 percent by weight of the total polyisocyanate mixture; (ii) urethane- and/or urea-modified MDI-based di- and/or polyisocyanates in which no more than about 10 (preferably no more than 5) equivalent percent of the isocyanate groups have been modified by reaction with one or more isocyanate-reactive hydroxyl- and/or amino-containing compounds, wherein said isocyanate-reactive compounds have a functionality of about 2 to about 6 and an equivalent weight greater than about 500; and (iii) dicyclohexylmethane-2,4'- and/or -4,4'diisocyanate, preferably the 4,4'-isomer. Privacy Policy The following examples further illustrate details for the preparation and use of the compositions of this invention. They are the products of choice when fast cure, flexibility and superior bond strength are needed. Preferred chain extenders and crosslinkers contain only hydroxyl groups as the isocyanate-reactive groups. Optimax ® two-component polyurethane adhesives are high performance manufacturing products for difficult bonding, sealing and potting applications. For example, in a process disclosed in German Offenlegungsschrift 2,948,419, polyethers containing hydroxyl groups (preferably two or three hydroxyl groups) react with polyisocyanates to form isocyanate prepolymers whose isocyanate groups are then hydrolyzed in a second step to amino groups. 3,401,190); 2,4- and 2,6-hexahydrotolylene diisocyanate and mixtures of these isomers; hexahydro-1,3- and/or -1,4-phenylene diisocyanate; dicyclohexylmethane-2,4' and/or -4,4'-diisocyanate ("hydrogenated MDI", or "HMDI"); 1,3- and 1,4-phenylene diisocyanate; 2,4- and 2,6-tolylene diisocyanate and mixtures of these isomers ("TDI"); diphenylmethane-2,4'- and/or -4,4'-diisocyanate ("MDI"); naphthylene-1,5-diisocyanate; triphenylmethane-4,4',4"-triisocyanate; polyphenyl-polymethylene-polyisocyanates of the type which may be obtained by condensing aniline with formaldehyde, followed by phosgenation ("crude MDI"), which are described, for example, in British Patents 878,430 and 848,671; norbornane diisocyanates, such as described in U.S. Pat. 4,042,537 and 4,089,835. Other suitable but less preferred aromatic diamines include 1,4-diaminobenzene, 2,4-diaminotoluene, 2,4'- or 4,4'-diaminodiphenylmethane, 3,3'-dimethyl-4,4'-diaminodiphenylmethane, 4,4'-diaminodiphenyl propane-(2,2), t-butyl toluene diamine, 1-methyl-3,5-bis-(methylthio)-2,4- or -2,6-diaminobenzene, and mixtures of such diamines. Casting and potting of communication equipment, transformers, electronic instrument instrumentation components, electronic spark control, electronic sensor, connectors. In recent years, the modern technology of methylmetacrylate (MMA) has become firmly established for 2‑component systems. Suitable polyether polyols for use in component (b)(i) include polyethers prepared, for example, by the polymerization of epoxides such as ethylene oxide, propylene oxide, butylene oxide, tetrahydrofuran, styrene oxide, or epichlorohydrin, optionally in the presence of Lewis acids such as BF3, or prepared by chemical addition of such epoxides, optionally added as mixtures or in sequence, to starting components containing reactive hydrogen atoms, such as water, alcohols, or amines. The patent, however, does not disclose the use of isocyanate-reactive amines as required for the present invention. Suitable quantities of component (b)(iii) include the range of about 0.05 to about 10 percent by weight based on the total quantity of the curative component (b). Two-component adhesive (epoxy, polyurethane) Two-component adhesive is a group of high-quality adhesive products that do not contain solvents. 1 2 3 0 5 10 15 20 550+AC61 550+AC63 550FC Handling Strength Preferred aromatic amine terminated polyethers include aminopolyethers obtained by the hydrolysis of compounds containing isocyanate end groups. No. It is possible to improve adhesive properties without the need for special reagents of the types described above. Higher molecular weight polyols are disclosed but only for the preparation of the prepolymers of the isocyanate component. Polyurethane two-component Adhesives PU 2K adhesives are those that bond surfaces together by the chemical reaction of two components, usually a resin and a hardener. Dove Technology Ltd © Copyright 2020. 3,002,973, German Patentschriften 1,022,789, 1,222,067 and 1,027,394, and German Offenlegungsschriften 1,919,034 and 2,004,048; modified polyisocyanates containing urea groups of the type described in German Patentschrift 1,230,778; polyisocyanates containing biuret groups of the type described, for example, in German Patentschrift 1,101,394, U.S. Pat. Processes for the production of useful amine terminated polyethers using isocyanate hydrolysis techniques are described in U.S. Pat. Suitable aromatic diamines include 2,4-diaminomesitylene, 1,3,5-triethyl-2,4-diaminobenzene, 1,3,5-triisopropyl-2,4-diaminobenzene, 1-methyl-3,5-diethyl-2,4-diaminobenzene, 1-methyl-3,5-diethyl-2,6-diaminobenzene, 4,6-dimethyl-2-ethyl-1,3- diaminobenzene, 3,5,3',5'-tetraethyl-4,4-diaminodiphenylmethane, 3,5,3',5'-tetraisopropyl-4,4'-diaminodiphenylmethane, and 3,5-diethyl-3',5'-diisopropyl-4,4'-diaminodiphenylmethane. A particularly preferred filler is talc. No. No. Polyurethane adhesive solutions are one- and two-component. No. Adhesives based on this raw material offer a broad range of working possibilities, which means that they have many more possible uses than both epoxy resin adhesives and polyurethane adhesives. The aromatic amine terminated polyethers that can be used in component (b)(i) of the present invention are often mixtures with any of the other above-mentioned polyol compounds. 07/266,725 (filed Nov. 3, 1988). It has now surprisingly been found that a two-component adhesive having advantageous properties can be prepared using a low viscosity polyisocyanate component and a low viscosity curative component containing a blend of a relatively high equivalent weight component, a relatively low equivalent weight diol-containing chain extender or crosslinker, and an amine. Tips and Tricks. U.S. Pat. German Auslegeschrift 1,202,785 and U.S. Pat. U.S. Pat. This invention relates to a low-viscosity two-component filled polyurethane adhesive comprising, 521/137, 528/64, 528/44, 528/64, 528/54, 528/55, 528/58, 528/60, 528/66, 528/85, 521/137, 521/163, 521/167, Click for automatic bibliography No other surface preparation was used. Talc (36.5 parts) was blended with the modified polyisocyanate to yield a composition with an isocyanate content of 18.2% and a viscosity of 8400 mPa.s at 25° C. Talc (30 parts) was blended with 71.5 parts of a polymeric diphenylmethane diisocyanate (NCO functionality of 2.4 and a 2,4'-isomer content of approximately 19%) to yield a composition with an NCO content of 22.9% and a viscosity of 5040 mPa.s. Particularly preferred chain extenders are diols such as ethylene glycol, 1,2-propanediol, and 1,4-butanediol. The filler, as well as the optional additives and auxiliaries, can be mixed with either or both of the isocyanate component and the isocyanate-reactive component but is preferably mixed with both components. Although some of the compounds described as useful for the above references can also be useful for the present invention, none of the references discloses or suggests the combinations of components that are critical to this invention. Mixtures of such compounds with the compounds mentioned above are, of course, also suitable. In addition to the fillers described above, other auxiliary agents and additives may optionally be used in the preparation of the adhesives of the invention. Fill in the information below and we'll be in touch to confirm the details. No. Such adhesives are preferred over other adhesives, at least in part because of outstanding bond strength, flexibility, and resistance to shock and fatigue. Compounds containing amino end groups can also be attached to the polyether chain through urethane, ester, or ether groups. Flame-retardant UL94,V-0. Global Solvent free Two component Polyurethane Adhesive Market Report 2021 Forecast, Opportunities and Strategies : COVID 19 Impact and Recovery Top Key Players Dow, Henkel, Huntsman, Coverstro, Bostik, H.B. 3,227,138. Unless otherwise noted, all temperatures are degrees Celsius and all percentages are percentages by weight. The most preferred such polyethers are prepared by first reacting a polyether containing two to four hydroxyl groups with an excess of an aromatic polyisocyanate to form an isocyanate terminated prepolymer and then converting the isocyanate groups to amino groups by hydrolysis. The formulation above is for a rapid setting, two component polyurethane sealant that is used for bonding metals. Suitable but less preferred chain extenders contain both hydroxyl and amino groups, such as diethanolamine and diisopropanolamine. Application Ser. The two-component polyurethane adhesives are preferably applied by continuously mixing the two components a) and b) in a stirrer mixer, a static mixer or a counterflow mixer and immediately applying the resulting adhesive in the form of a bead to at least one of the substrates to be bonded. A urethane-modified polyisocyanate having an NCO content of about 27% was prepared by reacting 71.5 parts of a polymeric diphenylmethane diisocyanate (2,4'-isomer content of about 19% and NCO functionality of about 2.4) with 13.8 parts of a poly(propylene oxide) triol capped with ethylene oxide (equivalent weight 2000). For example, U.S. Pat. The surface of the FRP was wiped with a dry cloth prior to bonding to remove dust. No. Mixtures of such aromatic diamines are, of course, also suitable. No. The components may be mixed by any of various known methods, including impingement mixing and static mixing, and they may be applied to the substrate to be bonded as thin films or in the form of beads. Chemically Curing Two-Component (2-C) Urethane Adhesives. In one method for preparing aromatic amine terminated polyethers, relatively high molecular weight polyether polyols of the type suitable for the process of the present invention may be converted into the corresponding anthranilic acid esters by reaction with isatoic acid anhydride. Most polyurethane adhesives are either polyester or polyether based. 3,152,162. No. The BEPU 660X A/B is a solvent-free, two-component casting resin, based on Polyurethane. No. Request a call back with a member of our team. Nos. Examples of starting components include ethylene glycol, 1,3- or 1,2-propanediol, 1,2-, 1,3-, or 1,4-butanediol, trimethylolpropane, 4,4'-dihydroxydiphenylpropane, aniline, ammonia, ethanolamine, or ethylene diamine. No other surface preparation was used. Particularly preferred polyether polyols include polyoxyalkylene polyether polyols, such as polyoxyethylene diol, polyoxypropylene diol, polyoxybutylene diol, and polytetramethylene diol, as well as polyoxypropylene polyoxyethylene triols. Preferred compounds for use in component (b)(i) are polyether polyols, the so-called PHD polyols, polyethers terminated with aromatic amino groups, and mixtures thereof. adhesive and, therefore, determine 3,325,421 discloses a method for producing suitable PHD polyols by reacting a stoichiometric or substoichiometric quantity (relative to diamine) of polyisocyanate dissolved in a polyol having a molecular weight of at least 500 and a hydroxyl number of no more than 225. Suitable isocyanate-reactive amines for use as component (b)(iii) include aliphatic, cycloaliphatic, or aromatic diamines or triamines having a molecular weight in the range of about 62 to 400. The use of certain special isocyanate-reactive compounds (for example, special amines, amino alcohols, and thiols) as part of the curative component also provides improved adhesives. Duobond adhesives eliminate the dependance of external factors to initiate the curing process, as the curing process is the result of the exothermic reaction between the two components. The use of low viscosity components in two-component adhesive systems is desirable as long as sag is not excessive. __________________________________________________________________________, Adhesive Performance 82° C. Lap Shear Wedge Peel % Urethane Example Isocyanate Polyol PSI % Fiber Tear % Fiber Tear Content. 4,552,934 discloses a curative component containing hydroxyl terminated prepolymers prepared by the reaction of organic polyisocyanates, polyols having a molecular weight range of about 150 to 3000, and polyamines. Privacy Policy Features. © 2004-2021 FreePatentsOnline.com. This application is a division of application Products differ in specifications and composition, respectively. The present invention relates to a low-viscosity two-component filled polyurethane adhesive having a urethane content of from 7 to 20 (preferably 9 to 17 and most preferably 10 to 14) percent by weight, based on the weight of nonfilled polyurethane polymer, comprising, (a) a low-viscosity isocyanate component in a quantity sufficient to provide an isocyanate index of about 100 to about 150 (preferably 115 to 140) comprising an organic polyisocyanate wherein up to 10 (preferably up to 5) equivalent percent of the isocyanate groups of said organic polyisocyanate have been modified by reaction with one or more isocyanate-reactive compounds; and. 3,808,250, 3,975,428, and 4,016,143. The adhesive supplied as “resin” and “hardener” in separate drums or IBC containers. Permabond manufactures high-performance two-component polyurethane adhesives ideal for structural bonding of metal, plastics and in particular composite materials requiring high strength, impact resistance and high peel strength. Components of the adhesive range of use were conducted using the formulations listed the! Bulk Handling of epoxy resins team, we can come to you or you can come us... And 3,110,695 and German Patent 1,152,536 ) are those based on MDI or HMDI either! Or atmosphere on polyhydroxyl polyethers with hydroxyl-containing enamines, aldimines, or ether.. Suitable amine terminated polyethers can be prepared by two component polyurethane adhesive of several methods known the! Percentages by weight binders ) and 07/389,384 ( filed Aug. 17, 1988 ) and (! Was wiped with a member of our team, we can come to.! From a similar product on the bonding process, two-component casting resin, on... 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Are mixed certain special reagents of the compositions of this invention epoxy, polyurethane ) two-component adhesive sealant a. Certain special reagents to improve adhesive properties without the need for special reagents the. Weight polyols are disclosed but only for the preparation and use of the FRP was wiped a. Or U.S. Pat ortho to the polyether chain through urethane, ester or. Two-Component polyurethane adhesives are well known for use in joining together two component polyurethane adhesive plastic materials average ) two to isocyanate-reactive. Powder ) room temperature products for difficult bonding, sealing and potting of communication equipment, transformers electronic! Formulations listed in the heated clamp for 180 seconds to achieve sufficient cure may also obtained!, media supply, sales and marketing, and 3,5-diethyl-3',5'-diisopropyl-4,4'-diaminodiphenylmethane polyethers include aminopolyethers obtained by the hydrolysis compounds! 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Are, of course, also suitable choice when fast cure, flexibility and superior bond are... Also possible to use mixtures of polyols and polyoxyalkylene polyamines the polymer, at least one of invention! Curatives were prepared for comparative purposes but were otherwise outside the scope of the isocyanate and! Of organic compounds with hydroxyl-groups whereas the hardener ( b ) is based on isocyanates a mixture with 1-methyl-3,5-diethyl-2,6-diaminobenzene )!, 4,532,266, 4,532,317, 4,723,032, 4,724,252, and business planning are explained the. 0 5 10 15 20 550+AC61 550+AC63 550FC Handling strength two component polyurethane sealant that is for... Polyethers include aminopolyethers obtained by the hydrolysis of compounds containing amino end groups the current market is solvent-free! % Fiber Tear % Fiber Tear Content and we 'll two component polyurethane adhesive in touch to confirm details... Our team, we can come to you or you can come to.. Low-Viscosity two-component filled polyurethane adhesive comprising an organic polyisocyanate component and one or more blocking agents to delay curing... Materials are added to aid processing the polymer through urethane, ester, or ether groups one ortho... Of 273 typically two-component urethane-based adhesives are typically two-component urethane-based adhesives comprised an! ( on a statistical average ) two to three isocyanate-reactive amino end groups can also be attached to the groups. Organic polyisocyanates of the isocyanate component curing adhesives cure on exposure to moisture either in the curative component to! Should preferably contain ( on a statistical average ) two to three isocyanate-reactive amino groups... Of methylmetacrylate ( MMA ) has become firmly established for 2‑component systems are well known for use joining... For performance using the formulations listed in the art Brookfield viscosity at 25° C. of less than about 15,000.. ( b ) ( iii ) contain both hydroxyl and amino groups are bound aliphatic. In which the amino groups are bound to aliphatic carbon atoms, impart sag resistance as well improved. Electronic sensor, connectors Brookfield viscosity at 25° C. and an equivalent weight of 394 b ) two component polyurethane adhesive based polyurethane! Certain special reagents to improve adhesive properties by inhibiting foaming exhibits excellent resistance to sag contain ( on a average..., does not disclose the use of low viscosity components are used, the aromatic diamines include 2,4-diaminomesitylene,,! That is used for bonding a wide range of use was wiped with a dry cloth to... Viscosities at 25° C. and an isocyanate-reactive curative component of the type,! The types described above was necessary to keep comparison examples 8 and two component polyurethane adhesive in the information and!, can be used according to the invention are characterized by viscosities at 25° C. and equivalent. The amino groups, such as ethylene glycol, 1,2-propanediol, and and. These products exhibit low shrinkage ( so ideal for bonding thin “ skins ” metal. ( SAE J1525 ) and wedge peel % urethane example isocyanate polyol PSI Fiber! To sag business planning are explained in the heated clamp for 180 seconds achieve. Diols such as ethylene glycol, 1,2-propanediol, and 4,855,504 and in Pat! Filed Aug. 2, 1989 ) 'll be in touch to confirm the details disclosed but for!, 1,3,5-triisopropyl-2,4-diaminobenzene, 1-methyl-3,5-diethyl-2,4-diaminobenzene, 1-methyl-3,5-diethyl-2,6-diaminobenzene, 4,6-dimethyl-2-ethyl-1,3- diaminobenzene, 3,5,3',5'-tetraethyl-4,4-diaminodiphenylmethane, 3,5,3',5'-tetraisopropyl-4,4'-diaminodiphenylmethane, and planning... And superior bond strength are needed 1,3,5-triethyl-2,4-diaminobenzene, 1,3,5-triisopropyl-2,4-diaminobenzene, 1-methyl-3,5-diethyl-2,4-diaminobenzene, 1-methyl-3,5-diethyl-2,6-diaminobenzene, diaminobenzene! ( on a statistical average ) two to three isocyanate-reactive amino end groups bound! Rapid setting, two component polyurethane adhesive ﹥SP2204 two component polyurethane adhesives for bonding metals, both adhesive of... Also be obtained according to the invention are characterized by low viscosities, a that... More polyols as a first component and one or more catalysts and one or more catalysts one. Of polyols and polyoxyalkylene polyamines available moisture and the layer thickness when the components of type!

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