High flexual modulus polyurethane polymers and RIM processes emp

Details High flexual modulus polyurethane polymers and RIM processes emp High flexual modulus polyurethane polymers and RIM processes emp

1990-02-09

1991-10-22

Kight, III, John

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521176, 528 77, 523220, 524456, C08K 700

Patent

active

050596349

ABSTRACT:
A polyurethane composition for use in RIM processes which composition comprises an MDI-polyol prepolymer, an aromatic diamine chain extender and a "cold break"-reducing additive to prevent "cold break" and to increase the flexual modulus of the polymer, which additive comprises triethanol amine or a triethanol amine-ethylene oxide end cap reaction product.

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patent: 4738989 (1988-04-01), Smith
patent: 4748192 (1988-05-01), Smith
patent: 4748201 (1988-05-01), Smith
patent: 4786656 (1988-11-01), Presswood et al.
patent: 4871789 (1989-10-01), Martinez

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