Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate
2008-05-12
2011-11-08
Choi, Ling (Department: 1762)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C525S055000, C525S191000, C525S233000
Reexamination Certificate
active
08053528
ABSTRACT:
Aqueous binder compositions for fiber mats include a urea-formaldehyde resin and an aqueous emulsion of a copolymer prepared by polymerization of a monomer mixture including styrene, an alkyl(meth)acrylate, acrylonitrile, and an unsubstituted or substituted acrylamide. Even when used in relatively low concentration, the copolymer provides improved physical properties to the fiber mat. The fiber mats can be used in composite flooring, asphalt roofing shingles, siding, and dry wall.
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PCT International Search Report, Jul. 30, 2008.
International Preliminary Report on Patentability and Written Opinion of the International Searching Authority, Issued Dec. 1, 2009.
Choi Ling
Georgia-Pacific Chemicals LLC
Kems Michael S.
LandOfFree
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