Compositions of Br or Cl containing polymers and polycarbodiimid

Details Compositions of Br or Cl containing polymers and polycarbodiimid Compositions of Br or Cl containing polymers and polycarbodiimid

1978-04-20

1979-06-26

Ansher, Harold

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Noninterengaged fiber-containing paper-free web or sheet...

152359, 156110A, 156110C, 260 459D, 428474, 428483, 428512, 428517, 428520, C08K 516, C08L 900, B32B 2502, B32B 2518

Patent

active

041593634

ABSTRACT:
The use of a minor amount by weight of a polycarbodiimide in an active Br or Cl containing polymer serves to lessen the adverse effects caused by formation of Br or Cl decomposition products on aging. In particular, the use of polycarbodiimides in bromo butyl or chloro butyl rubber tire inner liners, especially those also accelerated by polyimino compounds during curing, adjacent hydrocarbon rubber layers (carcass or ply stocks) reinforced with polyester cords serves to reduce the degradations or heat aging of the polyester cord caused by Br and/or Cl and/or amine compounds or fragments which may tend to migrate from the inner liner through the ply stock to the polyester cords.

REFERENCES:
patent: 2654680 (1953-10-01), Goppel et al.
patent: 3193523 (1965-07-01), Neumann et al.
patent: 3297795 (1967-01-01), Peter et al.
patent: 3776882 (1973-12-01), Witzler et al.
patent: 3852101 (1974-12-01), Batchelor
patent: 4009325 (1977-02-01), Freedman et al.

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