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:
Mar. 07, 1978
Filed:
Apr. 24, 1974
Frank Thomas Sanderson, Huntingdon Valley, PA (US);
Alexander Kowalski, Collegeville, PA (US);
Roger H Kottke, Redwood Falls, MN (US);
Rohm and Haas Company, Philadelphia, PA (US);
Abstract
The pressure sensitive adhesive of this invention has improved shear resistance while still having good tackiness and stability in a humid atmosphere, it is prepared by solution polymerization, or by other methods, and has carboxylic acid groups therein, an alkoxyalkyl ester of an unsaturated carboxylic acid, an hydroxyalkyl ester of an unsaturated carboxylic acid having at least one hydroxyl functionality and, in many cases, an alkyl acrylate or an alkyl methacrylate. A crosslinker may be used, and the adhesive cured by heat, without destroying the proper relationship of tack and shear resistance.