Process for the preparation of polymers containing urethane grou

Details Process for the preparation of polymers containing urethane grou Process for the preparation of polymers containing urethane grou

1980-04-02

1982-05-04

Wong, Jr., Harry

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

Synthetic resins

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

20415915, 20415916, 20415922, 20415923, 525440, 526218, 526227, 526264, 526301, C08F21612, C08F22036, C08F22060, C08F28300

Patent

active

043283250

ABSTRACT:
The invention relates to a process for the preparation of polymers from polymerizable urethanes prepared by reacting isocyanates having at least two isocyanato groups with polyesters of the formula ##STR1## wherein R is alkylene having from 2 to 10 carbon atoms, A is an ethylenically-unsaturated radical, and n is an integer of from 1 to 100.

REFERENCES:
patent: Re29131 (1977-02-01), Smith et al.
patent: Re29772 (1978-09-01), Niederhauser et al.
patent: 3933937 (1976-01-01), Rhodes et al.
patent: 3959103 (1976-05-01), Larsen
patent: 3989609 (1976-11-01), Brack
patent: 4064194 (1977-12-01), Evans et al.
patent: 4082710 (1978-04-01), Vrancken et al.
Chemical Abstracts 71, (1969), 39 797 f.

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