Process for preparing polyurethane-backed carpet

Details Process for preparing polyurethane-backed carpet Process for preparing polyurethane-backed carpet

C - Chemistry, Metallurgy

09

D

117/126, 117/143

C09D 183/04 (2006.01) B32B 5/22 (2006.01) C08G 18/08 (2006.01) C09D 183/10 (2006.01) D06N 3/14 (2006.01) D06N 7/00 (2006.01)

Patent

CA 2020034

ABSTRACT Substrates having successive layers of a cel- lular polyurethane and a non-cellular polyurethane are prepared using certain siloxane-polyether block copoly- mers in the non-cellular polyurethane formulation. The use of the block copolymer reduces or eliminates the formation of a bubble line at the interface of the poly- urethane layers, thereby improving physical and cosmetic properties of the carpet. 37,494-F

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