Process for the preparation of carboxylated propylene polymers

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...

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C08F 834

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049451367

ABSTRACT:
A process for the preparation of carboxylated propylene homo- and copolymers which comprises the reaction of a thermoplastic propylene homo- or copolymer with an azidosulfonyl-benzoic acid by mechanically mixing said polymer and said acid at a temperature of at least 180.degree. C. in the substantial absence of a free-radical initiator. The carboxylated polymers thus prepared display considerably improved viscosity characteristics and can advantageously be used in novel polymer blends with polyamide polymers as well for the preparation of novel ionomers by reaction with a metal compound of basic character based on a mono-, di- or trivalent metal.

REFERENCES:
patent: 3220985 (1965-11-01), Breslow
patent: 4548993 (1985-10-01), Garagnani et al.
patent: 4555566 (1985-11-01), Arita
patent: 4612155 (1986-09-01), Wong
patent: 4670508 (1987-01-01), Ohdaira
Research Disclosure No. 134, Jun. 1975, p. 44.
Chemical Abstract; vol. 90, No. 14, Apr. 1979, p. 47, No. 104979.

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