Odor free polylactic acid modified aqueous emulsion paints free of volatile coalescing organic solvent
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United States of America Patent
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May 23, 2006
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app pub date -
Apr 23, 2001
filing date -
Apr 23, 2001
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Abstract
An aqueous ambient dry decorative or protective coating comprising a film forming matrix polymer of an aqueous emulsion polymer of aqueous copolymerized ethylenically unsaturated monomers modified with at least 3% by weight of a low molecular weight oligomer of copolymerized hydroxy alkanoic acid having 2 to 4 carbon atoms having a number average molecular weight between 300 and 10,000 to provide a film forming binder substantially free of volatile organic coalescing solvents. Preferred oligomers are homopolymers and copolymers of polymerized lactic acid or polymerized glycolic acid.
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