Method of producing a silicone water-based elastomer

Details Method of producing a silicone water-based elastomer Method of producing a silicone water-based elastomer

1986-05-28

1986-12-23

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 71, 521 86, 521134, 521154, 524859, 524860, 528 18, 528 33, 528 34, C08J 930

Patent

active

046312960

ABSTRACT:
This invention describes a method of producing a silicone elastomer from an emulsion. When the ingredients are mixed together, the resulting latex can be used immediately. Removing the water from the latex results in a silicone elastomer. The method combines (A) an anionically stabilized, hydroxyl endblocked polydiorganosiloxane, present as an emulsion of dispersed particles in water, the emulsion having a pH of greater than 9, (B) dialkyltindicarboxylate, (C) alkylorthosilicate, (D) colloidal silica, and optionally (E) water, admixing (A) and (B) only in the presence of (C) to produce a dispersion of the ingredients in water. The ingredients can be distributed into a two-part system for storage. One embodiment includes fibers, lauryl alcohol, or a mixture of both in the emulsion; then forms an open-cell, elastomeric foam by forming a froth from the emulsion and removing the water from the froth.

REFERENCES:
patent: 2843555 (1958-07-01), Berridge
patent: 3355406 (1967-11-01), Cekada
patent: 3706695 (1972-12-01), Huebner et al.
patent: 3830760 (1984-08-01), Bengtson
patent: 4221688 (1980-09-01), Johnson et al.
patent: 4244849 (1981-01-01), Saam

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