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:
Sep. 17, 1985
Filed:
Oct. 19, 1981
Applicant:
Inventors:
Edward L Kay, Akron, OH (US);
Richard Gutierrez, Canal Fulton, OH (US);
Assignee:
The Firestone Tire & Rubber Company, Akron, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F / ;
U.S. Cl.
CPC ...
525383 ; 525344 ; 525354 ; 525502 ; 525930 ;
Abstract
Tackifying agents for rubber comprising at least one chemically or physically treated guayule resin fraction are disclosed. Physical treatments include vacuum deoiling, steam stripping deoiling, hexane deoiling, while chemical treatments include formaldehyde reaction, phenol/formaldehyde reaction, urea formaldehyde reaction, acid reaction and sulphur reaction. Untreated guayule resin fractions can also be used. Vulcanized and unvulcanized rubber compositions containing guayule resin derived tackifying agents as well as articles made therefrom are also disclosed.