Abstract: A novel primerless adhesive composition with unique properties in automotive related applications, particularly in glass bonding applications; the process of making thereof.

Abstract: Two-component polyurethane adhesives include a polyol component and a polyisocyanate component. The polyol component includes a high functionality polyether polyol and precipitated calcium carbonate particles having a particle size of up to 200 nm. The adhesive has an excellent combination of a prolonged open time followed by curing to form a strong adhesive bond.

Abstract: Disclosed are curable compositions containing isocyanate functional prepolymer containing two part adhesives wherein the prepolymers contain in their backbones hydrophobic segments and the curative part comprises one or more oligomeric or polymeric compounds having more than one isocyanate reactive groups; and one or more low molecular weight compounds having more than one isocyanate reactive groups wherein the low molecular weight compounds and the amount of such low molecular weight compounds are selected to such that the composition after full cure exhibits a ratio of modulus (e.g., Young's modulus or shear storage modulus) measured at ?35° C. to the modulus measured at 23° C. of less than 10. The cured compositions exhibit higher stiffness across the common use temperature range and improved hydrolytic stability especially when exposed to elevated temperatures. Also disclosed are methods of bonding substrates together utilizing such compositions.

Abstract: Disclosed is a composition including one or more isocyanate functional prepolymers; one or more catalysts for the reaction of isocyanate moieties and active hydrogen containing moieties; one or more mercapto silanes; one or more amino silanes, isocyanato silanes or a mixture thereof; one or more reinforcing fillers comprising one or more high surface area carbon blacks; one or more untreated calcium carbonates; one or more polyisocyanates having an isocyanate functionality of about 2 or greater; and one or more linear plasticizers. Preferably, the isocyanate functional prepolymer is prepared in the presence of at least a portion of the linear plasticizer. Preferably, the isocyanate functional polymer is prepared in the presence of a dialkyl malonate. The composition may be one-part adhesive composition. Also disclosed are methods of applying the compositions to substrates.

Abstract: Disclosed is an adhesive system and method of use thereof wherein the adhesive composition comprises a moisture curable adhesive comprised of an isocyanate terminated prepolymer and a cure accelerator having two curatives components having different cure kinetics. The cure accelerator is comprised of an isocyanate reactive compound comprising a primary, secondary or tertiary amino group, or a primary thiol group having faster curing kinetics resulting an increase in bead stability within the first minutes and a polyol selected from a diol and/or triol with slower curing kinetics allowing for sufficient open time and yet a fast strength build up. The preferred method of application of the adhesive system is via a 1K application gun.

Abstract: Disclosed are curable compositions containing isocyanate functional prepolymer containing two part adhesives wherein the prepolymers contain in their backbones hydrophobic segments and the curative part comprises one or more oligomeric or polymeric compounds having more than one isocyanate reactive groups; and one or more low molecular weight compounds having more than one isocyanate reactive groups wherein the low molecular weight compounds and the amount of such low molecular weight compounds are selected to such that the composition after full cure exhibits a ratio of modulus (e.g., Young's modulus or shear storage modulus) measured at ?35° C. to the modulus measured at 23° C. of less than 10. The cured compositions exhibit higher stiffness across the common use temperature range and improved hydrolytic stability especially when exposed to elevated temperatures. Also disclosed are methods of bonding substrates together utilizing such compositions.

Abstract: A two-part polyurethane adhesive exhibits excellent adhesion to low surface energy substrates such as polypropylene. The adhesive consists of a polyol component and a polyisocyanate component that are combined and cured to form the adhesive bond. The polyol component is characterized in containing a monoalcohol that has a molecular weight of 100 to 2000. The presence of the monoalcohol promotes strong bonding and a cohesive failure mode that is preferred in vehicular applications.

Abstract: A polyurethane adhesive composition, more specifically a two-component polyurethane adhesive, including (a) at least one isocyanate component, and (b) at least one polyol component, wherein the polyol component (b) includes (bi) at least one first polyol compound, (bii) at least one second polyol compound and (biii) at least one chain extender, and a process for making the above adhesive composition.

Abstract: Disclosed are two-component polyurethane adhesive composition which include (a) an isocyanate component comprising a prepolymer which is a reaction product of one or more isocyanate compounds comprising a polyisocyanate and one or more isocyanate-reactive components comprising one or more hydrophobic polyols selected from the group consisting of poly(butylene oxide)polyol, a polybutadiene polyol, an acrylic polyol and mixtures thereof, wherein the one or more hydrophobic polyols have a functionality from 1.6 to 3.5 and a number average molecular weight from 500 g/mol to 10,000 g/mol; and (b) one or more polyol chain extenders; wherein the two-component polyurethane adhesive composition has a hydrophobic content of at least 10 wt. %.

Abstract: A polyurethane adhesive composition, more specifically a two-component polyurethane adhesive, including (a) at least one isocyanate component, wherein the isocyanate component comprises (ai) at least one first polyisocyanate compound, and (aii) at least one second polyisocyanate compound having a functionality of greater than, or equal to, about 2.3; and (b) at least one polyol component; and a process for making the above adhesive composition.

Abstract: Two-component polyurethane adhesives include a polyol component and a polyisocyanate component. The polyol component includes a high functionality polyether polyol and precipitated calcium carbonate particles having a particle size of up to 200 nm. The adhesive has an excellent combination of a prolonged open time followed by curing to form a strong adhesive bond.

Abstract: Disclosed is a composition including one or more isocyanate functional prepolymers; one or more catalysts for the reaction of isocyanate moieties and active hydrogen containing moieties; one or more mercapto silanes; one or more amino silanes, isocyanato silanes or a mixture thereof; one or more reinforcing fillers comprising one or more high surface area carbon blacks; one or more untreated calcium carbonates; one or more polyisocyanates having an isocyanate functionality of about 2 or greater; and one or more linear plasticizers. Preferably, the isocyanate functional prepolymer is prepared in the presence of at least a portion of the linear plasticizer. Preferably, the isocyanate functional polymer is prepared in the presence of a dialkyl malonate. The composition may be one-part adhesive composition. Also disclosed are methods of applying the compositions to substrates.

Abstract: Disclosed are latent three-component polyurethane adhesive compositions which includes; (a) a first polyol component comprising (i) one or more polyols having a hydroxyl equivalent weight of 400 to 2000 and a nominal hydroxyl functionality of 2 to 4; (ii) one or more aliphatic diol chain extenders; (iii) from 0.01 to 1 weight percent, based on the total weight of the first polyol component, of one or more latent room temperature organometallic catalysts; and (iv) from 0.01 to 1 weight percent, based on the total weight of the first polyol component, of one or more one or more blocked cyclic amidine compound catalysts or one or more phenol-blocked cyclic amidine compounds catalysts; (b) a second polyol component comprising (i) one or more polyols having a hydroxyl equivalent weight of 400 to 2000 and a nominal hydroxyl functionality of 2 to 4; (ii) one or more aliphatic diol chain extenders; (iii) from 0.

Abstract: The adhesive compositions of the invention are especially useful in bonding replacement windows into structures without using a primer and allowing for fast drive away times. The adhesive is pumpable, sag resistant and bonds parts together at temperatures between about ?10 C and about 80 C. The adhesive is comprised a linear and branched isocyanate functional polyether prepolymer wherein the linear and branched isocyanate functional polyether prepolymers are present in the composition at a particular weight ratios an isocyanate functional polyester prepolymer, a plasticizer and filler.

Abstract: Disclosed are latent two-part polyurethane adhesives that rapidly develop adhesive strength when cured by application of infrared radiation containing a polyol component which includes; one or more polyols having a hydroxyl equivalent weight of 400 to 2000 and a nominal hydroxyl functionality of 2 to 4; one or more aliphatic diol chain extenders; and one or more latent room temperature organometallic catalysts; b) a polyisocyanate component containing one or more polyisocyanate compounds; and v) a carboxylic acid-blocked cyclic amidine compound and vi) a phenol-blocked cyclic amidine compound which each may be located in the polyol component or the isocyanate component. Further disclosed are methods of bonding structures together using the latent two-part polyurethane adhesives.

Abstract: A novel primerless adhesive composition with unique properties in automotive related applications, particularly in glass bonding applications; the process of making thereof.

Abstract: A new polyurethane (PU) adhesive composition with encapsulated hardeners having unique properties in automotive related applications.

Abstract: Two-component polyurethane adhesives include a polyol component and a polyisocyanate component. The polyol component includes a polyether polyol and an aliphatic diol chain extender. The polyisocyanate component includes an isocyanate prepolymer made by reacting an aromatic polyisocyanate with a poly(butylene oxide) polyol. When cured, the adhesive is highly resistant to heat and humidity, and exhibits an unexpectedly high modulus and tensile strength.

Abstract: Two-component polyurethane adhesives include a polyol component and a polyisocyanate component. The polyol component includes a polyether polyol and an aliphatic diol chain extender, but is devoid of primary and second amine compounds. The polyisocyanate component includes one or more polyisocyanate compounds. The adhesive contains a mixture of a dialkyltinthioglycolate catalyst and an acid-blocked cyclic amidine catalyst. The tin catalyst is formulated into the polyol component, whereas the cyclic amidine catalyst can be formulated into either the polyol or the polyisocyanate components.

Abstract: Two-component polyurethane adhesives include a polyol component and a polyisocyanate component. The polyol component includes a polyether polyol and specific amount of an aliphatic diol chain extender. The polyisocyanate component includes an isocyanate prepolymer made by reacting an aromatic polyisocyanate with a polyether. The adhesive has an excellent combination of a prolonged open time followed by curing to form a strong adhesive bond. The adhesive is especially useful for bonding carbon fiber-reinforced plastics.