Homogeneous copolymers containing vinyl pyrrolidone and 2-methyl

Details Homogeneous copolymers containing vinyl pyrrolidone and 2-methyl Homogeneous copolymers containing vinyl pyrrolidone and 2-methyl

1998-05-01

1999-06-15

Lipman, Bernard

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C08F 2608

Patent

active

059123125

ABSTRACT:
Homogeneous copolymers of 60-99 mole % of vinyl pyrrolidone (VP) and 1-40 mole % 2-methylene-1,3-dioxepane (MDO), preferably 85-95 mole % VP and 5-10 mole % MDO, having a K-value of about 30-50, and a Tg of about 124-138.degree. C., are described herein. The copolymers are hydrolytically degradable in aqueous acid or basic solutions and biodegradable.

REFERENCES:
patent: 4806609 (1989-02-01), Tracy et al.
patent: 5304317 (1994-04-01), Barwise et al.
Answer 1 of 9--1998:431352 Doc. No. 129:109369--Pan et al Univ. of Beijing China--381-384--Abstract pp. 6-7.

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