Process for the production of new polysiloxane-polyoxyalkylene c

Details Process for the production of new polysiloxane-polyoxyalkylene c Process for the production of new polysiloxane-polyoxyalkylene c

1970-12-06

1978-06-20

Shaver, Paul F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

200 25AH, C07F 708, C07F 710

Patent

active

040961621

ABSTRACT:
The invention relates to a method of making branched polysiloxane-polyoxyalkylene copolymers and to their use as stabilizers in the production of polyurethane foam plastics. The copolymers are made by reacting specified organopolysiloxanes with polyisocyanates, heat treating the NCO-containing addition products to cause branching and reacting the branched NCO-containing addition products with monofunctional polyethers. The copolymers can be used to stabilize polyurethane foam reaction mixtures.

REFERENCES:
patent: 3246048 (1966-06-01), Haluska
patent: 3398104 (1968-08-01), Haluska
patent: 3402192 (1968-09-01), Haluska
patent: 3505377 (1970-04-01), Morehouse
patent: 3896123 (1975-07-01), DeZuba et al.

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