Process for the hydrohalogenation of buta-diene-containing polym

Details Process for the hydrohalogenation of buta-diene-containing polym Process for the hydrohalogenation of buta-diene-containing polym

1977-08-25

1978-12-12

Hamrock, William F.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526 521, C08F 818

Patent

active

041296990

ABSTRACT:
Disclosed is a novel process for the hydrohalogenation of polybutadiene and butadiene-containing copolymers in the presence of aqueous hydrogen halides. The process permits the hydrohalogenation of from about 1 to about 50% of the carbon-carbon double bonds of the polybutadiene chain and includes the steps of dissolving the polymer in a suitable organic solvent containing a catalytic amount of a quaternary ammonium salt, adding an aqueous hydrogen halide, mixing the reactants and thereafter extracting the hydrohalogenated product.

REFERENCES:
patent: 2596878 (1952-05-01), van Veersen
patent: 3454541 (1969-07-01), Orr et al.
patent: 3647774 (1972-03-01), Webb et al.
patent: 3947432 (1976-03-01), Tsuchiya et al.

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