C - Chemistry – Metallurgy – 14 – C
Patent
C - Chemistry, Metallurgy
14
C
C14C 11/00 (2006.01) C09D 157/04 (2006.01)
Patent
CA 2295363
An aqueous leather coating composition and a method for coating leather with the aqueous coating composition are provided. The aqueous coating composition contains an aqueous emulsion polymer which includes from 0.4% to 10% by weight of a copolymerized acetoacetate or acetoacetamide monomer and has a glass transition temperature from -20 °C to 10 °C. In an alternative embodiment the aqueous coating composition contains an aqueous emulsion polymer which includes from 0.1% to 6% by weight of a copolymerized acetoacetate or acetoacetamide monomer and from 2% to 15% by weight of copolymerized carboxylic acid monomer and has a glass transition temperature from -40 °C to 0 °C, the polymer having been contacted with a transition metal oxide, hydroxide, or carbonate at a pH less than 9 in an amount greater than 0.20 equivalent of transition metal per equivalent of copolymerized carboxylic acid monomer.
Lesko Patricia Marie
Schindler Frederick James
Gowling Lafleur Henderson Llp
Rohm And Haas Company
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