Aqueous silicone/(CO) polymer dispersions crosslinkable into ela

Details Aqueous silicone/(CO) polymer dispersions crosslinkable into ela Aqueous silicone/(CO) polymer dispersions crosslinkable into ela

1994-05-20

1998-02-24

Reddick, Judy M.

Stock material or miscellaneous articles

Hollow or container type article

Nonself-supporting tubular film or bag

424474, 424482, 426128, 428219, 428327, 428447, 428455, 514938, B29D 2200

Patent

active

057210268

ABSTRACT:
Aqueous silicone dispersions crosslinkable into elastomeric state on removal of water therefrom under ambient conditions, well adapted, e.g., for the production of elastomeric silicone seals in the construction industry, include an oil-in-water base emulsion (A) of an .alpha.,.omega.-(dihydroxy) polydiorganosiloxane stabilized with at least one anionic or nonionic surface-active agent, or mixture thereof, (B) an aqueous latex of an organic (co)polymer having a particle size ranging from 0.01 to 0.5 .mu.m and a solids content ranging from 20% to 70% by weight, (C) an effective crosslinking amount of at least one crosslinking agent, (D) an effective amount of at least one nonsiliceous filler material, and (E), optionally, a catalytically effective amount of a metal curing catalyst, such aqueous dispersions further having a solids content of at least 40% by weight.

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