Thermoplastic polyurethane-urea elastomers

Details Thermoplastic polyurethane-urea elastomers Thermoplastic polyurethane-urea elastomers

1996-05-31

1998-04-14

Gorr, Rachel

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From reactant having at least one -n=c=x group as well as...

528 49, 528 85, C08G 1830

Patent

active

057392501

ABSTRACT:
A process for the preparation of thermoplastic polyurethaneurea elastomers is disclosed. Accordingly, organic polyisocyanates (A) and a mixture (B) containing Zerewitinoff active hydrogen atoms, are reacted to yield an intermediate product. The intermediate product is then chain extended by thermal decomposition. Reactant (B) contains

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