摘要:
This invention provides for curable and graft-cured polymer compositions prepared from a mixture comprising: a) an elastomeric copolymer containing from about 0.01 up to about 10 mole % of Y ester groups randomly distributed along and pendant to the elastomeric polymer chain, said Y ester groups having structure (I) wherein R2 and R3 are independently selected from the group consisting of hydrogen and an alkyl group containing 1 to about 6 carbon atoms and R4 is selected from the group consisting of hydrogen, and alkyl group containing from 1 to about 28 carbon atoms, an aryl group and an alkenyl group containing from 2 to about 28 carbon atoms; and b) at least one free radically polymerizable monomer. The invention also provides for a process for preparing graft-cured polymer compositions comprising forming the above recited mixture of (a) and (b) and subjecting said mixture to free radical polymerization conditions. The Y ester groups pendant to the elastomeric polymer chain, e.g. benzylic (meth) acrylic acid ester groups present in isobutylene/para-methystyrene interpolymer chains, are capable of participating in free radical initiated reactions with monofunctional or polyfunctional free radically polymerizable monomers to produce graft-crosslinked compositions having an unusual balance of physical properties. These compositions may be formed into shaped articles such as films, coatings, adhesive layers and moldings and subjected to free radical polymerization conditions to produce crosslinked shaped articles.
摘要:
An aqueous coating composition comprising a graft copolymer characterized by carboxylic-acid or amine functional macromonomers attached at a terminal end thereof to a polymeric backbone, wherein the macromonomers are grafted in an aqueous carrier in which the carboxylic-acid or amine functional groups have been neutralized. Such compositions provide improved properties for an automotive finish.
摘要:
There is provided a pressure-sensitive adhesive graft copolymer formed by reacting an acrylic monomer system comprising at least one alkyl acrylate ester containing from about 4 to about 8 carbon atoms in the alkyl group in the presence of a macromer selected from the group consisting of ethylene-butylene and ethylene-propylene macromers and mixtures thereof with each of said macromer having a molecular weight of from about 2,000 to about 30,000, a glass transition temperature of less than about 0 DEG C and a terminal reactive group of acrylate or methacrylate.
摘要:
The present invention relates to water or alcohol soluble or dispersible thermoplastic elastomeric copolymers and to cosmetic and pharmaceutical compositions containing these copolymers. This invention especially relates to copolymers useful for hair styling purposes, and the hair styling compositions containing these copolymers. This invention further relates to copolymers useful for providing cosmetic and pharmaceutical compositions for topical application to the skin. These topical skin care compositions are useful for delivering and/or transdermally transporting active ingredients to or through the skin.