Stabilization of tin-coupled polymers

Details Stabilization of tin-coupled polymers Stabilization of tin-coupled polymers

1998-04-10

1999-11-09

Sanders, Kriellion

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524396, C08K 504, C08K 509

Patent

active

059816392

ABSTRACT:
The process of this invention can be utilized to stabilize tin-coupled rubbery polymers. This process involves adding a chelating diamine or a sodium alkoxide to the rubbery polymer after the tin coupling has been carried out. This invention more specifically discloses a process for improving the stability of a tin-coupled rubbery polymer which comprises adding a sodium alkoxide to the tin-coupled rubbery polymer subsequent to the time at which the tin-coupled rubbery polymer is coupled. Sodium alkoxide is a representative example of a sodium alkoxide that can be used to stabilize the tin-coupled rubbery polymer.

REFERENCES:
patent: 5268439 (1993-12-01), Hergenrother
patent: 5623035 (1997-04-01), Halasa et al.
patent: 5629375 (1997-05-01), Jenkins et al.
patent: 5679751 (1997-10-01), Halasa et al.

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