Preparation of composite polymers containing active hydrogen ato

Details Preparation of composite polymers containing active hydrogen ato Preparation of composite polymers containing active hydrogen ato

1982-03-05

1983-08-02

Welsh, Maurice J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

525404, 525440, 525455, C08L 2500

Patent

active

043967493

ABSTRACT:
Composite polymers, especially composite polyols containing active hydrogen atoms can be prepared by polymerizing one or more olefinically unsaturated compounds in the presence of a liquid polymer containing active hydrogen atoms and a modified initiator; the modification comprising the reaction between a liquid polymer containing one or more groups which can react with isocyanato groups and a compound containing two or more isocyanato groups which has been partially converted by reacting it with an organic hydroperoxide or a free-radical initiator also containing additional active hydrogen atoms. The composite polymers exhibit a stable dispersed polymer phase and can be suitably applied as starting materials for polyurethane foams.

REFERENCES:
patent: 3257476 (1966-06-01), Tobolsky et al.
patent: 3291859 (1966-12-01), Tobolsky
patent: 3865898 (1975-02-01), Tobolsky
patent: 4104236 (1978-08-01), Simroth
patent: 4210727 (1980-07-01), Preston et al.
patent: 4272619 (1981-06-01), Balle et al.
patent: 4317895 (1982-03-01), Guagliardo et al.

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