Method for modifying polyfumaric acid diester

Details Method for modifying polyfumaric acid diester Method for modifying polyfumaric acid diester

1986-01-28

1987-06-02

Schofer, Joseph L.

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

Synthetic resins

Treating polymer containing material or treating a solid...

5253295, 525383, 525388, 526271, 528481, 528480, 525374, C08F 800

Patent

active

046705201

ABSTRACT:
According to the invention, a method for modifying a polyfumaric acid diester is provided. The method comprises subjecting the polyfumaric acid diester to thermal treatment to thereby obtain a polyfumarate having carboxyl groups. The polyfumaric acid diester is obtained by polymerizing a fumaric acid diester represented by the following general formula of: ##STR1## wherein R represents an alkyl group having 1 to 12 carbon atoms, a cycloalkyl group having 3 to 12 carbon atoms or an organic residue having at least one aromatic ring.

REFERENCES:
patent: 3558566 (1971-01-01), Balwe et al.
patent: 3923752 (1975-12-01), Guse et al.
patent: 4383053 (1983-05-01), Honda

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