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:
Dec. 21, 1993
Filed:
May. 14, 1992
Applicant:
Inventors:
Eric Knowles, Thornton Cleveleys, GB;
David A Cornforth, Rochdale, GB;
Francis M Carney, Crumpsall, GB;
Assignee:
Air Products and Chemicals, Inc., Allentown, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
C08F / ; C08F / ;
U.S. Cl.
CPC ...
525305 ; 525256 ; 525281 ; 525303 ; 5253293 ; 5253304 ; 5253339 ; 5253327 ; 525349 ; 525479 ;
Abstract
This invention pertains to scorch retardant systems for peroxide curable elastomers. Polyunsaturated monomers copolymerizable with the elastomer in the presence of peroxides are mixed with hydroquinone and sulfenamides and incorporated into elastomer formulations. The formulations are milled and cured. Excellent Mooney scorch times and hardness values, as well as other physical properties are obtained.