Process for preparing polyurethane elastomers

Details Process for preparing polyurethane elastomers Process for preparing polyurethane elastomers

1977-09-16

1980-05-13

Lieberman, Paul

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525126, 525453, 525911, C08L 7500

Patent

active

042029503

ABSTRACT:
Polyurethane compositions having improved tensile strength and tear strength are prepared by graft polymerizing an ethylenically unsaturated monomer onto a liquid, hydroxyl-containing diene polymer and reacting the resulting graft copolymer with a polyfunctional organic isocyanate. Conventional catalysts and polymerization procedures are employed.

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patent: 4020125 (1977-04-01), Suzuki
patent: 4041104 (1977-08-01), Selley
Tikhomirov, B. J. et al., Chemical Abstracts, vol. 77, Jul. 24, 1972, Abstract No. 20,262e.

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