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:
Jun. 21, 2016
Filed:
Sep. 07, 2012
Nancy W. Harman, Savannah, GA (US);
George Miller, Savannah, GA (US);
Thomas Fontana, Fleming Island, FL (US);
Neal Kerckhoff, Tallahassee, FL (US);
Jason Rothouse, Savannah, GA (US);
Ramachandra Shastry, Dayton, NJ (US);
Nancy W. Harman, Savannah, GA (US);
George Miller, Savannah, GA (US);
Thomas Fontana, Fleming Island, FL (US);
Neal Kerckhoff, Tallahassee, FL (US);
Jason Rothouse, Savannah, GA (US);
Ramachandra Shastry, Dayton, NJ (US);
CRODA INTERNATIONAL PLC, East Yorkshire, GB;
Abstract
Polyamide compositions useful for personal care are disclosed, including film-forming concentrates and emulsions. Ethanol-based concentrates comprise a hydrophobic polyamide, which comprises a reaction product of either (a) a dimerized fatty acid, at least one C2-C4 carboxylic acid, and a polyamine component comprising ethylenediamine and 1 to 30 eq. % of one or more di- or triamines; or (b) a dimerized fatty acid, at least 50 wt. % of a C16-C22 unsaturated carboxylic acid, and at least one C2-C6 diamine. Personal care applications for the concentrates, including continuous sunscreens, fragrant body sprays or splashes, anti-acne medications, are included. Water-in-oil emulsions comprising the hydrophobic polyamides are storage-stable and provide water-resistant SPF for products such as sunscreens and body lotions.