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. 29, 1983
Filed:
Sep. 29, 1980
Applicant:
Inventors:
George B Park, Purton, Nr. Swindon, GB;
John M Senior, Purton, Nr. Swindon, GB;
Assignee:
Raychem Corporation, Menlo Park, CA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ; C08J / ; C08F / ;
U.S. Cl.
CPC ...
525 63 ; 20415915 ; 525 92 ; 525426 ;
Abstract
A polyamide suitable as a hot-melt adhesive contains pendent graft copolymerized chains derived from aromatic compounds having an olefinically unsaturated moiety, e.g., styrene, lower methacrylates, epoxy-containing unsaturated compounds, acrylonitrile or methacrylonitrile, but contains no free graft comonomer. The polyamides show improved peel strengths, especially at low and high temperatures. The low temperature properties may be further improved by incorporating an elastomer, preferably a thermoplastic elastomer, part of which is compatible with the graft copolymerized chains.