Polyurethane elastomers prepared in a two-step process using mix

Details Polyurethane elastomers prepared in a two-step process using mix Polyurethane elastomers prepared in a two-step process using mix

1985-12-10

1987-08-25

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

264 51, 2643281, 2643286, 2643288, 528 61, 528 64, C08G 1814

Patent

active

046893563

ABSTRACT:
This invention is a process for preparing polyurethane and/or polyurea elastomer comprising reacting a liquid, preformed isocyanate-terminated prepolymer, which prepolymer is the reaction product of a stoichiometric excess of a polyisocyanate and a relatively high equivalent weight isocyanate-reactive compound, with a chain extender mixture, which chain extender mixture comprises

REFERENCES:
patent: 4327204 (1982-04-01), Oyaizu et al.
patent: 4463155 (1984-07-01), Kibler
patent: 4546114 (1985-10-01), Alberino et al.

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