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. 26, 2000
Filed:
Jan. 21, 1999
Ramanathan Ravichandran, Nanuet, NY (US);
Joseph Suhadolnik, Yorktown Heights, NY (US);
Mervin G Wood, Poughquag, NY (US);
Anthony Debellis, Garnerville, NY (US);
Robert E Detlefsen, Putnam Valley, NY (US);
Revathi Iyengar, Courtland Manor, NY (US);
Jean-Pierre Wolf, Courtaman, CH;
Ciba Specialty Chemicals Corporation, Tarrytown, NY (US);
Abstract
Benzotriazole UV absorbers which are substituted at the 5-position of the benzo ring by an electron withdrawing group exhibit enhanced durability and very low loss rates when incorporated into automotive coatings. This is particularly the case when the 3-position of the phenyl ring is also substituted by phenyl or phenylalkyl such as .alpha.-cumyl. Compounds where the 5-position of the benzo ring are substituted by perfluoroalkyl such as trifluoromethyl are particularly of interest for both their enhanced durability and for their excellent solubility and excellent color properties in some thermoplastic compositions when the phenyl ring is substituted at the 3-position by hydrogen or tert-alkyl.