Cured polyester plastic compositions derived from recycled...

Details Cured polyester plastic compositions derived from recycled... Cured polyester plastic compositions derived from recycled...

C - Chemistry, Metallurgy

08

F

C08F 283/00 (2006.01) C08F 290/14 (2006.01) C08G 18/83 (2006.01) C08G 63/676 (2006.01) C08J 11/26 (2006.01) C08L 51/08 (2006.01)

Patent

CA 2123836

Abstract of the Disclosure Cured, thermoset plastic articles derived from scrap polyurethanes are disclosed. The polyurethane is converted to a liquified mixture containing digested polyurethane and cyclic, unsaturated anhydride. A Lewis acid then catalyzes insertion of the cyclic, unsaturated anhydride into the polyether backbone of the polyurethane to give a liquid, unsaturated resin. The unsaturated resin can cured with a vinyl monomer in the presence of a free-radical initiator to give a cured, thermoset plastic.

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