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:
Jun. 07, 1977
Filed:
Feb. 04, 1975
Applicant:
Inventors:
Assignee:
Mitsui Petrochemical Industries, Ltd., Tokyo, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09D / ;
U.S. Cl.
CPC ...
106 32 ; 106 27 ; 106 28 ; 106 29 ; 106 30 ; 106 31 ; 106289 ; 260 / ;
Abstract
A process for preparing resins for use in printing inks, which comprises co-polymerizing at least 50% by weight of dicyclopentadiene and not more than 50% by weight of another cationically polymerizable monomer in the presence of a Friedel-Crafts polymerization catalyst, adding 1 to 20% by weight, based on the weight of the resulting co-polymer, of an .alpha.,.beta.-unsaturated carboxylic acid or its anhydride to the resulting copolymer, and then esterifying the resulting adduct at last partially with a polyhydric alcohol.