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:
Jul. 04, 1978
Filed:
Mar. 21, 1977
Applicant:
Inventor:
Peter Henry Westermann, Dorking, GB;
Assignee:
The British Petroleum Company Limited, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
260 / ; 260 / ;
Abstract
A blend of chlorosulphonated polyethylene elastomer and hardened extract obtained by blowing a gas containing free oxygen at elevated temperatures into a solvent extract of petroleum vacuum distillate or a deasphalted petroleum residue which extract boils above 350.degree. C at atmospheric pressure and contains a major proportion of aromatic hydrocarbons, said hardened extract having a saturated hydrocarbon content of not more than 10% by weight. The hardened extract serves not only to extend the chlorosulfonated polyethylene, but also improves certain physical properties of sheets made from the blend.