Process to prepare 2-phenylpropyl containing polydiorganosiloxan

Details Process to prepare 2-phenylpropyl containing polydiorganosiloxan Process to prepare 2-phenylpropyl containing polydiorganosiloxan

1986-01-13

1986-10-21

Marquis, Melvyn I.

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

Synthetic resins

From silicon reactant having at least one...

528 33, 528 43, 556459, 556462, 556463, C08G 7704

Patent

active

046186654

ABSTRACT:
A method of preparing a copolymer of methyl(2-phenylpropyl)siloxy units and dialkylsiloxy units is disclosed. The method hydrolyzes methyl(2-phenylpropyl)dichlorosilane to yield a reaction product of primarily methyl(2-phenylpropyl)disiloxanediol, then copolymerizes the reaction product with dialkylcyclosiloxane to give the copolymer. The copolymer has a crystallinity point of less than -50.degree. C. It is useful in producing silicone elastomers and sealants having a comparably low crystallinity point.

REFERENCES:
patent: 3088964 (1963-05-01), Ryan
patent: 4269993 (1981-05-01), Ohtake et al.
patent: 4537983 (1985-08-01), Seiler et al.

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