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:
Nov. 07, 1989
Filed:
Aug. 15, 1988
Robert W Schluenz, Panama City, FL (US);
Arizona Chemical Company, Panama City, FL (US);
Abstract
A novel copolymer resin which has excellent tackifying properties for selected elastomers useful in hot melt and pressure sensitive adhesives is produced by the copolymerization of beta-pinene with other terpenes or hydrocarbon monomers, followed by thermal catalytic isomerization of the resin produced. Typically, beta-pinene and styrene (80/20) are copolymerized at a temperature between 0.degree. to 60.degree. C. under anhydrous conditions with a Lewis acid catalyst in a solvent. After catalyst removal, the copolymer resin is isomerized with iodine as a catalyst at a temperature between 200.degree. to 260.degree. C. Excellent yields of high softening point tackifier resins are produced.