Selective catalytic process for preparing N-halothiosulfonamide

Details Selective catalytic process for preparing N-halothiosulfonamide Selective catalytic process for preparing N-halothiosulfonamide

1989-12-08

1991-08-06

Henderson, Christopher

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C08C 1922, C08F 834

Patent

active

050378961

ABSTRACT:
A process is provided for preparing a N-halothiosulfonamide modified polyolefin of at least one 1-alkene, and at least one diene which, after incorporation in the polyolefin includes a carbon atom which is fully substituted, for example, 5-ethylidene-2-norbornene. The process comprises reacting a N-halothiosulfonamide with the polyolefin in the presence of a non-nucleophilic base and a catalyst comprising a salt of a weak acid of specified metals. The process is particularly suited to be performed in the melt phase.

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R. J. Hopper, "Improved Cocure of EPDM-Polydiene Blends by Conversion of EPDM Into Macromolecular Cure Retarder", Rubber Chemistry and Technology, vol. 49, p. 346 and Table 1.
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R. J. Hopper et al., Preprint, International Conference on Advances in the Stabilization and Controlled Degradation of Polymers, Ozone Resistant, Co-Curable Blends of Chemically Modified EPDM with Polydiene Elastomers, 5/84.

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