Organopolysiloxane compositions modified with polyurethane

Details Organopolysiloxane compositions modified with polyurethane Organopolysiloxane compositions modified with polyurethane

1978-06-21

1980-05-13

Briggs, Sr., Wilbert J.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

525453, 525474, 528 28, 528 48, C08L 7504, C08L 8304

Patent

active

042028078

ABSTRACT:
Polyurethane is present as a solid phase in a liquid polyorganosiloxane, preferably being formed therein by mixing a polyhydroxy-containing material with the polysiloxane followed by addition of a polyisocyanate. If the polyorganosiloxane contains hydroxyl groups it can be chemically bonded to the polyurethane. The composition can be cured to solid plastic masses of superior properties by adding a curing agent for the polysiloxane.

REFERENCES:
patent: 3388101 (1968-06-01), Wismer et al.
patent: 3708467 (1973-01-01), Smith et al.

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