摘要:
The subject invention discloses a composite structure and a resin component for use in the composite structure. The composite structure includes a first layer, comprising a styrenated unsaturated polyester, and a second layer. The first layer is a show surface of the composite structure. The second layer includes the reaction product of the resin component and an isocyanate component. The resin component includes an isocyanate-reactive component, an amine-based catalyst, and a temperature-activated catalyst that is different from the amine-based catalyst. The amine-based catalyst is active at ambient temperature for initiating an exothermic reaction between the isocyanate component and the resin component thereby establishing a reaction temperature greater than the ambient temperature. The temperature-activated catalyst is active at the reaction temperature for completing a cure of the isocyanate component with the resin component.
摘要:
The subject invention provides a foamed article having random cell structures formed by a process comprising the steps of providing a resin component and an isocyanate component and providing a first nucleation gas and a second nucleation gas, both under low pressure. The first and the second nucleation gases are added into at least one of the resin component and the isocyanate component. The resin component and the isocyanate component are reacted to form the foamed article having a first cell structure resulting from the addition of the first nucleation gas and a second cell structure that is different than the first cell structure resulting from the addition of the second nucleation gas. The foamed article is particularly suited for replacing metal springs in an article of furniture while still maintaining the feel and comfort of the metal springs.
摘要:
A urethane acrylate composite structure includes a first layer that is a show surface of the urethane acrylate composite structure and a support layer. The support layer includes a urethane acrylate composition that includes a urethane acrylate adduct. The urethane acrylate adduct is the reaction product of an isocyanate component and a stoichiometric excess of a functionalized acrylate component. The isocyanate component includes toluene diisocyanate and polymeric polyphenylmethane polyisocyanate. The functionalized acrylate component is reactive with the isocyanate component. The urethane acrylate composition exhibits improved viscosity due to the isocyanate component. The combination of the toluene diisocyanate and the polymeric polyphenylmethane polyisocyanate results in the improved viscosity of the urethane acrylate composition while maintaining excellent resin curing and finished composite structure properties.
摘要:
The subject invention discloses a composite structure and a resin component for use in the composite structure. The composite structure includes a first layer, comprising a styrenated unsaturated polyester, and a second layer. The first layer is a show surface of the composite structure. The second layer includes the reaction product of the resin component and an isocyanate component. The resin component includes an isocyanate-reactive component, an amine-based catalyst, and a temperature-activated catalyst that is different from the amine-based catalyst. The amine-based catalyst is active at ambient temperature for initiating an exothermic reaction between the isocyanate component and the resin component thereby establishing a reaction temperature greater than the ambient temperature. The temperature-activated catalyst is active at the reaction temperature for completing a cure of the isocyanate component with the resin component.
摘要:
The subject invention provides a method of making a molded article (10). The molded article (10) includes a paint layer (12) formed from a paint composition and a polyurethane layer (14) formed from an isocyanate component and an isocyanate-reactive component. The paint composition is applied to a surface (22) of a mold (18, 20) to form the paint layer (12). The paint layer (12) is infused with a base. The polyurethane layer (14) is then adhered to the paint layer (12) in the mold (18, 20) to make the molded article (10). The base promotes adhesion between the paint layer and polyurethane layer of the article by catalyzing a reaction between the isocyanate component in the polyurethane layer (14) and the paint component
摘要:
Carboxyl-containing isobutene copolymers are obtainablea) by cationic polymerization of a mixture of from 1 to 99 mol % of isobutene and from 99 to 1 mol % of a 2-methylalk-1-ene at less than 20.degree. C. in the presence of a halogen-containing Lewis acid andb) subsequent grafting of the isobutene copolymer obtainable in this manner with an .alpha.,.beta.-ethylenically unsaturated carboxylic acid or carboxylic acid derivative at above 100.degree. C. and in the presence of a free radical initiator.Such carboxyl-containing isobutene copolymers are particularly suitable as adhesive raw materials or as sealing compounds.
摘要:
A method of reducing a content of a residual styrene monomer in a polyol utilizes a polyol, a peroxide, an adjustment of temperature, and an application of a vacuum to separate the residual styrene monomer from the polyol. The residual styrene monomer is classified as a volatile organic compound. The peroxide includes monoperoxycarbonates and peroxyketals. Peroxide radicals, present in the peroxide, react with and polymerize the residual styrene monomer to form a polymer having decreased volatility. Applying the vacuum physically separates the residual styrene monomer from the polyol by increasing a vapor pressure of the residual styrene monomer. Separating the residual styrene monomer from the polyol forms an improved polyol which includes less than 20 parts per million of the residual styrene monomer in the polyol.
摘要:
The present invention relates to a method for improving the compatibility of random vinyl substituted aromatic/C.sub.4 -C.sub.6 conjugated diolefin polymer/asphalt mixtures comprising adding a modifier to said random vinyl substituted aromatic/C.sub.4 -C.sub.6 conjugated diolefin polymer/asphalt mixture selected from the group consisting of:(a) polymers containing an epoxy functionality(b) polymers containing a carboxyl functionality(c) monomers, oligomers, and polymers containing an amine functionality;(d) monomers, oligomers, and polymers containing an ester functionality; or mixtures thereof.
摘要:
Carboxyl-containing isobutene copolymers are obtainablea) by cationic polymerization of a mixture of from 1 to 99 mol % of isobutene and from 99 to 1 mol % of a 2-methylalk-1-ene at less than 20.degree. C. in the presence of a halogen-containing Lewis acid andb) subsequent grafting of the isobutene copolymer obtainable in this manner with an .alpha.,.beta.-ethylenically unsaturated carboxylic acid or carboxylic acid derivative at above 100.degree. C. and in the presence of a free radical initiator.Such carboxyl-containing isobutene copolymers are particularly suitable as adhesive raw materials or as sealing compounds.
摘要:
The present invention relates to the coagglomeration of random vinyl substituted aromatic/C4-C6 conjugated diolefin polymers With sulfur. Said coagglomerate is storage stable and easily blended with asphalt under a variety of mixing conditions. Further, polymer/asphalt blends prepared with the sulfur coagglomerated polymers show improved storage stability against phase separation.