Stabilization of siloxane terminated polymers

Details Stabilization of siloxane terminated polymers Stabilization of siloxane terminated polymers

1996-04-10

1997-08-19

Shaver, Paul F.

Organic compounds -- part of the class 532-570 series

Organic compounds

Silicon containing

556466, 526 82, 526340, 528 10, 528 14, 528 21, C07F 708

Patent

active

056590563

ABSTRACT:
The present invention relates to a method of reducing hydrolysis and coupling of substituents of siloxane end capped polymers containing hydrolyzable substituents during contact with water. The Mooney viscosity of siloxane terminated polymers is stabilized during such contact by treating the polymer with a stabilizing amount of stabilizing agent selected from the group consisting of: an acid, an acyl halide, methane sulfonic acid, toluene sulfonic acid, sulfuryl chloride, thionylchloride, phosgene, carbon dioxide, sulfur dioxide, sulfur trioxide, SOCl.sub.2 and SO.sub.2 Cl.sub.2, prior to contacting the siloxane terminated polymer with water.

REFERENCES:
patent: 4701490 (1987-10-01), Burkhardt et al.
patent: 5274154 (1993-12-01), Roth et al.
patent: 5481014 (1996-01-01), Graiver et al.

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