Heat-stable, highly resilient, abrasion-resistant...

Details Heat-stable, highly resilient, abrasion-resistant... Heat-stable, highly resilient, abrasion-resistant...

C - Chemistry, Metallurgy

08

G

C08G 81/00 (2006.01) C08G 18/10 (2006.01) C08G 18/42 (2006.01) C08L 75/04 (2006.01)

Patent

CA 2136125

Heat-stable, highly resilient, abrasion-resistant polyurethane/ polyester three-block polyadducts are obtainable by reacting A) at least one thermoplastic polyester and B) at least one thermoplastic polyurethane elastomer which pre- ferably has a content of free NCO groups of from 0.5 to 4% by weight and a total content of NCO groups of from 0.75 to 5 % by weight, based in each case on the total weight of the thermoplastic polyurethane, and in turn is obtainable by reacting organic diisocyanates (Ba) with relatively high molecular weight polyhydroxy compounds (Bb) and low molecular weight chain extenders (Bc) with the use of an NCO index of more than 115, advantageously at from 180 to 300°C, and are used for the production of moldings.

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