Preparation of hydroxylated low molecular weight polymodal butad

Details Preparation of hydroxylated low molecular weight polymodal butad Preparation of hydroxylated low molecular weight polymodal butad

1990-10-12

1992-10-06

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526335, C08F 430

Patent

active

051532875

ABSTRACT:
Hydroxy-containing, propylene carbonate insoluble butadiene polymers having an average molecular weight of about 400 to about 25,000 and containing an average of about 2 hydroxyl groups per molecule are prepared by polymerizing butadiene in a homogeneous reaction medium consisting essentially of a propylene carbonate solution of an aqueous solution of hydrogen peroxide at a temperature within the range of about 100.degree. to about 200.degree. C. for a reaction time within the range of about 1 to about 2 hours to thereby form the butadiene polymer and by recovering the butadiene polymer.

REFERENCES:
patent: 3673168 (1972-06-01), Burke, Jr. et al.
patent: 3796762 (1974-03-01), Verdol et al.
patent: 3808281 (1974-04-01), Verdol et al.
patent: 4518770 (1985-05-01), Kaplan et al.
patent: 4606913 (1986-08-01), Aronson et al.
Advances in Chemistry Series 125 ACS Wasington D.C. (1973) Nakajima pp. 98-107.

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