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. 15, 1976
Filed:
Jun. 17, 1975
Applicant:
Inventors:
Assignee:
Mitsui Petrochemical Industries, Ltd., Tokyo, JA;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08L / ; C08L / ; C08L / ; C08L / ;
U.S. Cl.
CPC ...
260 / ; 260-5 ; 260887 ; 260889 ; 260892 ; 260890 ; 260875 ; 260894 ; 2608 / ; 260896 ;
Abstract
A process for producing a hydrocarbon resin (C) which comprises copolymerizing 100 parts by weight of vinyl aromatic hydrocarbons (A) containing more than 80% by weight isopropenyltoluene and from about 5 to 100 parts by weight of a fraction (B) which is the by-product of cracking or refining petroleum and mainly comprising unsaturated hydrocarbons having a boiling point ranging from about -15.degree.C to 45.degree.C and having 4 to 5 carbon atoms in the presence of a Friedel-Crafts catalyst and pressure-sensitive adhesives comprising the hydrocarbon resin produced in combination with a rubber.