Halomethylation of polymer

Details Halomethylation of polymer Halomethylation of polymer

1995-05-25

1997-05-13

Lipman, Bernard

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

Synthetic resins

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

5253334, 5253335, 525371, C08F 820, C08F 824

Patent

active

056293860

ABSTRACT:
A process is provided for the halomethylation of the aromatic groups in an isoolefin-vinylidene aromatic monomer polymer by the in situ generation of the halomethylating species formed by the reaction of a methoxy alkoxy methane with a thionyl halide, the halomethylation of the polymer being catalyzed by a Lewis acid.

REFERENCES:
patent: 4074035 (1978-02-01), Powers et al.
patent: 5162445 (1992-11-01), Powers et al.
Sadykhov et al in Chemical Abstracts 71: 50579g 1969 (No month available).
Sadykhov et al in Chemical Abstracts 73: 110361h 1970 (No month available).
Warshawsky et al in British Polymer Journal, 16, 234-238, 1984 (Dec.).
Wright et al in Macromolecules 24, 5879-5880 1991 (No month Available).

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