C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 75/04 (2006.01) C08G 18/12 (2006.01) C08J 11/06 (2006.01)
Patent
CA 2056776
ABSTRACT High molecular weight thermoplastic polyurethane resins with narrow molecular weight distribution and good physical properties are prepared by regenerating thermally degraded and/or off-grade thermoplastic polyurethane resins. The regenerated high molecular weight thermoplastic polyurethane resins do not present any processing difficulties inherent to high molecular weight resins. 37,226-F
Bonk Henry W.
Chen Augustin T.
Ehrlich Benjamin S.
Smart & Biggar
The Dow Chemical Company
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