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:
Jan. 22, 1980
Filed:
Dec. 26, 1978
Nelson R Lazear, Chatham, NJ (US);
Robert W Stackman, Morris Township, Morris County, NJ (US);
Celanese Corporation, New York, NY (US);
Abstract
There is disclosed a pressure sensitive adhesive composition having improved adhesive strength and tack. This adhesive composition comprises three terpolymers, each terpolymer comprising an alkyl acrylate wherein the alkyl group contains four to fourteen carbon atoms, a vinyl ester of a saturated carboxylic acid having from one to six carbon atoms, and an ethylenically unsaturated carboxylic acid having three to five carbon atoms. The composition of terpolymers comprises a mixture of three of the terpolymers described above wherein each individual terpolymer has a different number average molecular weight. The final terpolymer composition has a specifically defined number average molecular weight, and a specifically defined molecular weight distribution.