Fast drying clearcoat refinish composition

Details Fast drying clearcoat refinish composition Fast drying clearcoat refinish composition

2001-09-27

2008-11-04

Pezzuto, Helen L. (Department: 1796)

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C525S216000, C525S223000, C525S374000, C427S407100, C427S409000, C427S412500

Reexamination Certificate

active

07446149

ABSTRACT:
A refinish clearcoat composition includes an hydroxyl-functional acrylic polymer. The acrylic polymer has a number average molecular weight of at least about 5000 and is polymerized using at least about 45% by weight cycloaliphatic monomer, based on total monomer weight polymerized. The clearcoat composition is fast drying. Optionally, the clearcoat is cured by low temperature baking. The cured clearcoat surface may be taped without leaving tape marks as soon as the substrate is cooled. The cured clearcoat may undergo wet sanding after baking as soon as the part is cooled, and can then be buffed back to a high gloss finish after sanding and washing.

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Emerson Keith Colyer and Henry J. Stateczny, U.S. Appl. No. 09/850,837, filed May 8, 2001.
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Zezza C. A, et al: Entitled “Viscosity reduction VIA monomer selection in solvent-borne high-solids styrene/acrylic coating resins” Journal of Coating Technology, Philadelphia, PA, US, vol. 68, No. 856, May 1, 1996 pp. 49-54, XP000607951.
JP 2001 342221 A (Nippon Shokubai Co. LTD, Nov. 12, 2001.
International Search Report for PCT/US 02/24836 filed Jul. 26, 2002.

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