Preparation of high-molecular weight thermoplastic polyorganosil

Details Preparation of high-molecular weight thermoplastic polyorganosil Preparation of high-molecular weight thermoplastic polyorganosil

1972-11-14

1977-05-31

Marquis, Melvyn I.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 465R, 260 465G, 260 47R, 2604482E, C08G 7700

Patent

active

040268276

ABSTRACT:
The preparation of high-molecular weight, thermoplastic, linear and branched polyorganosilicic acid esters of the formula: ##STR1## = 1 - 3 N = 100 - 500, PREFERABLY 180 - 300
From polyvalent phenols and/or alcohols and diphenyl silane accompanied by the separation of hydrogen according to the equation: ##STR2## wherein: THE REACTION IS CARRIED OUT AT 0.degree. TO 320.degree. C in the liquid phase in contact with a catalyst which is a basic compound, an active hydrogenation catalyst, a Lewis acid or hexachloroplatinic acid.
In the formulae, R stands for an arylene or alkylene group which is the essence of the aromatic, aliphatic or cycloaliphatic hydroxy compound reacted.

REFERENCES:
patent: 2967171 (1961-01-01), Barnes, Jr. et al.

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