Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From silicon reactant having at least one...
Patent
1979-07-18
1981-06-16
Marquis, Melvyn I.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From silicon reactant having at least one...
528 29, 528 18, 528 19, 528 20, 528 21, 528 25, 556436, C08G 7704
Patent
active
042739071
ABSTRACT:
The invention provides a novel class of organopolysiloxane compounds having at least one benzoin group represented by the general formula ##STR1## in which Ph is a phenyl group and R is a hydrogen atom or an alkyl group, bonded to the silicon atom in a molecule. The benzoin-bonded organopolysiloxane compounds can readily be prepared by the dehydrohalogenation, dehydrogenation, dehydration or dealkoholation condensation reaction between a corresponding organopolysiloxane having silicon-bonded halogen atoms, hydrogen atoms, hydroxy groups or alkoxy groups and an .alpha.-substituted or unsubstituted benzoin compound in the presence of a suitable reaction promotor or a condensation catalyst.
REFERENCES:
patent: 3636026 (1972-01-01), Fuhr et al.
patent: 3932339 (1976-01-01), McLeod
Aoki Hisashi
Hara Yasuaki
Okada Fumio
Takamizawa Minoru
Marquis Melvyn I.
Shin-Etsu Chemical Co. , Ltd.
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