Sheet and tube siloxane polymers containing a pendent organofunc

Details Sheet and tube siloxane polymers containing a pendent organofunc Sheet and tube siloxane polymers containing a pendent organofunc

1998-06-03

1999-11-02

Marquis, Melvyn I.

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...

524718, 524726, 524744, 524773, 528 10, 528 31, 528 41, 528 42, C08K 516

Patent

active

059772484

ABSTRACT:
Gels, cast films, coatings, extruded rods, extruded fibers, compression molded discs, and machined compression molded discs, are made from organopolysiloxane sheet or tube polymers such as an apophyllite-derived 3-cyanopropyldimethyl siloxy sheet polymer of the formula [((NCC.sub.3 H.sub.6)(CH.sub.3).sub.2 SiO).sub.x (HO).sub.1-x SiO.sub.1.5 ].sub.n. Polymers are prepared by contacting sheet or tube silicates with an organohalosilane containing at least one polar group such as cyanoalkyl, acyloxy, or haloalkyl, in the presence of a polar solvent or a mixture of a polar solvent and a non-polar solvent; and heating the mixture until a polymer is formed.

REFERENCES:
patent: 3661846 (1972-05-01), Kenney
patent: 5605982 (1997-02-01), Chao
patent: 5627241 (1997-05-01), Chen
Polym. Prepr. (Am. Chem. Soc., Div. Polym. Chem.), 1998, 39(1), pp. 497, 498, 514 and 515.

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