Carbon black loaded polyurethane having a diene backbone

Details Carbon black loaded polyurethane having a diene backbone Carbon black loaded polyurethane having a diene backbone

C - Chemistry, Metallurgy

08

J

400/7428

C08J 3/02 (2006.01) C08G 18/69 (2006.01) C08J 5/00 (2006.01) C08K 3/04 (2006.01)

Patent

CA 1056088

CARBON BLACK LOADED POLYURETHANE HAVING A DIENE BACKBONE Abstract of the Disclosure This invention provides a method of making a car- bon black loaded polyurethane having a diene backbone that passes the Goodrich Flex test and has a crescent tear of at least 200 pounds per inch. This polyurethane is obtain- ed by mixing a carbon black into the hydroxyl terminated diene polymer or copolymer containing glycol and then re- acting with an isocyanate at an Rv ratio of 1.25 + 0.1 and at a hydroxyl polymer to glycol ratio in the range of 2.5 to 1Ø

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