Sulfonated polyethylene rearrangement of polyorganosiloxanes

Details Sulfonated polyethylene rearrangement of polyorganosiloxanes Sulfonated polyethylene rearrangement of polyorganosiloxanes

Filed on

1995-02-09

Date issued

1996-01-23

Examiner

Dean, Ralph H.

Patent Class

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

SubClass

Synthetic resins

SubSubClass

From silicon reactant having at least one...

Other Related Categories

525100, C08G 7708

Type

Patent

Status

active

Patent number

054865905

Description

ABSTRACT:
A process for the rearrangement of polyorganosiloxanes using solid sulfonated polyethylene as a rearrangement catalyst. The process comprises contacting polyorganosiloxanes at a temperature within a range of about 20.degree. C. to 110.degree. C. with a rearrangement catalyst consisting essentially of a solid sulfonated polyethylene. In a preferred process, the solid sulfonated polyethylene is in the form of hollow fibers through which the polyorganosiloxanes are passed to effect rearrangement.

REFERENCES:
patent: 3694405 (1972-09-01), Litteral
patent: 4310679 (1982-01-01), Finke et al.
patent: 4855381 (1989-08-01), Mutoh et al.

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