C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 133/06 (2006.01) C08J 7/04 (2006.01) C09D 7/12 (2006.01)
Patent
CA 2724803
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).
Rokowski Joseph M.
Wegner Jonathan M.
Gowling Lafleur Henderson Llp
Rohm And Hass Company
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