Aqueous dispersions of organopolysiloxanes

Details Aqueous dispersions of organopolysiloxanes Aqueous dispersions of organopolysiloxanes

1994-11-15

2000-04-25

Niland, Patrick D.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524262, 524506, C08J 300, C08K 524, C08L 2904, C08L 8300

Patent

active

060545232

ABSTRACT:
Aqueous dispersions of organopolysiloxanes comprising (A) an organopolysiloxane containing groups which are capable of condensation, (B) a condensation catalyst, (C) an organopolysiloxane resin which is at least partly soluble in organopolysiloxane (A) when present in amounts of up to 50% by weight based on the weight of (A), (D) a compound containing basic nitrogen and (E) polyvinyl alcohol. The aqueous dispersions are prepared by dissolving the organopolysiloxane resin (C) in the organopolysiloxane (A) and then emulsifying the solution with polyvinyl alcohol (E) and water. The stable aqueous dispersions of the present invention cure to form transparent films.

REFERENCES:
patent: 4624900 (1986-11-01), Fau
patent: 4816506 (1989-03-01), Gamon
patent: 4833187 (1989-05-01), Sittenthaler et al.
patent: 4954539 (1990-09-01), Cavezzan et al.
patent: 5039724 (1991-08-01), Demlehner et al.
patent: 5045231 (1991-09-01), Braun et al.

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