Acrylic composition and a curable coating composition...

Details Acrylic composition and a curable coating composition... Acrylic composition and a curable coating composition...

2008-05-20

2008-05-20

Harlan, Robert D. (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S346000, C526S347000, C526S230000, C526S303100, C526S341000

Reexamination Certificate

active

11088217

ABSTRACT:
An acrylic composition includes the reaction product of an acrylic polymer, a carboxylic acid compound, and an alkyl carbamate. The acrylic polymer includes the reaction product of a functionalized monomer, a first compound reactive with the functionalized monomer to form a functionalized intermediate, and a highly branched, polyfunctional core molecule reactive with the functionalized intermediate. The first compound includes vinyl functionality reactive with the functionalized monomer and epoxy functionality. The carboxylic acid compound has carboxylic acid functionality that is reactive with the acrylic polymer. The alkyl carbamate is reactive with the hydroxyl-functional acrylic polymer to form the acrylic composition. The acrylic composition is highly-branched and, when used in coating compositions in combination with a suitable cross-linking agent, enhances recoat adhesion and produces cured films that have optimum scratch, mar, and chip performance, and acid etch resistance.

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Australian Publication, entitled “Facile Synthesis of Comb, Star, and Graft Polymers Via Reversible Addition—Fragmentation Chain Transfer (RAFT) Polymerization”, May 01, 2002, pp. 2956-2966.
Macromolecules Publication, entitled “Accurate Control of Chain Ends by a Novel Living Free-Radical Polymerization Process”, 1995, pp. 2993-2995.

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