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:
Nov. 06, 2001
Filed:
Oct. 29, 1999
Applicant:
Inventors:
Thomas S. Coolbaugh, Yardley, PA (US);
Sandra S. Davis, North Brunswick, NJ (US);
John E. Marlin, II, Bridgewater, NJ (US);
Demetreos N. Matthews, Edison, NJ (US);
Fahimeh P. Shirazi, Belle Mead, NJ (US);
Assignee:
Exxon Mobil Chemical Patents Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K 7/42 ; A61K 7/44 ; A61K 3/174 ; A61K 7/00 ;
U.S. Cl.
CPC ...
A61K 7/42 ; A61K 7/44 ; A61K 3/174 ; A61K 7/00 ;
Abstract
The invention provides waterproof sunscreen compositions which include polymers of isoprene, butadiene and/or styrene, particularity conjugated dienes which may be subject to some degree of hydrogenation. A copolymer of two different conjugated dienes is preferred. The polymers may be selectively hydrogenated to produce polymers which have highly controlled amounts of unsaturation, thereby improving water resistancy.