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:
Apr. 07, 1987
Filed:
Oct. 26, 1984
Applicant:
Inventor:
James A Schlademan, Stow, OH (US);
Assignee:
Atlantic Richfield Company, Los Angeles, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
524272 ; 524314 ; 524533 ; 525 64 ;
Abstract
Acrylic pressure sensitive hot melt adhesives having improved creep resistance at ambient temperatures and desirable melt viscosity at elevated application temperatures are prepared by copolymerizing suitable acrylic and methacrylic acids and alkyl esters with 10-40 percent by weight of an acrylate or methacrylate terminated vinyl aromatic monomer based macromolecular monomer. Compounding these adhesives with suitable tackifiers and plasticizers produces adhesives having low molten viscosity and significantly better shear adhesion, tack, and peel adhesion than is possible with the uncompounded acrylic adhesives.