Continuous method for altering the molecular weight of organosil

Details Continuous method for altering the molecular weight of organosil Continuous method for altering the molecular weight of organosil

1986-05-19

1988-04-19

Briggs, Sr., Wilbert J.

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

Synthetic resins

From silicon reactant having at least one...

528 15, 528 16, 528 13, 528 14, 528 19, 528 21, 528 23, 556462, 526 64, C07F 708, C08G 7704

Patent

active

047390263

ABSTRACT:
A continuous method for altering the molecular weight of organosilicon compositions containing Si-bonded oxygen in the presence of a catalyst and preferably under decreased pressure, in which a cylindrical reactor is employed have a ratio of length to inside diameter of between 1:1 and 50:1. A reactive mixture is stirred in the cylindrical reactor by a stirring apparatus having one or more stirring blades, so that the mixture is subjected to a maximum centrifugal acceleration b.sub.max of at least 70 m.s.sup.-2 and more preferably at least 165 m.s.sup.-2.

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patent: 4128568 (1978-12-01), Buchner et al.
patent: 4250290 (1981-02-01), Petersen
patent: 4426508 (1984-01-01), Dromard et al.
patent: 4551515 (1985-11-01), Herberg et al.
patent: 4599437 (1986-07-01), Riederer

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