The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 28, 1981
Filed:
Dec. 13, 1979
Applicant:
Inventors:
Akira Kageyama, Hitachi, JP;
Iwao Maekawa, Hitachi, JP;
Assignee:
Hitachi Chemical Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
526283 ; 260-5 ; 260 / ; 260 / ; 260 / ; 260 / ; 428441 ; 428442 ; 560194 ;
Abstract
An oligomer having, as the constitutional component thereof, (dihydrodicyclopentadienyl)-maleates or -fumarates of the general formula I: ##STR1## (I) wherein, R is H or ##STR2## and possessing a softening point in the range of from 50.degree. to 180.degree. C. and solubility in organic solvents. It is obtained by polymerizing the compound having the above general formula I under heating at a temperature of 220.degree. to 300.degree. C. in the absence of a catalyst.