Elastomeric roof coatings with adhesion to weathered thermoplastic polyolefin (TPO) roofing membranes

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United States of America Patent

PATENT NO 8435639
APP PUB NO 20110159300A1
SERIAL NO

12975418

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Abstract

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The present invention provides elastomeric roof coatings made from emulsion copolymers having a glass transition temperature (Tg) of from −25° C. to 20° C., a weight average molecular weight of from 50,000 to 150,000, a weight average particle size of from 100 to 500 nm, and copolymerized a monomer mixture of 20 wt. % or more, preferably 25 wt. % or more, of one or more hydrophobic monomer chosen from C6 to C24 alkyl (meth)acrylates and 0.2 to 5 wt. % of one or more ethylenically unsaturated acid functional monomer and containing aminosilanes which give excellent wet adhesion to weathered substrates, especially weathered thermoplastic polyolefin (TPO).

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Patent Owner(s)

Patent OwnerAddress
ROHM AND HAAS COMPANY400 ARCOLA ROAD COLLEGEVILLE PA 19426

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Rokowski, Joseph M Barto, US 17 232
Wegner, Jonathan M Duluth, US 1 14

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