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:
Mar. 17, 2009
Filed:
Dec. 11, 2003
Robert A. Pyles, Bethel Park, PA (US);
Rick L. Archey, Pleasant Hills, PA (US);
David M. Derikart, Pittsburgh, PA (US);
Robert A. Pyles, Bethel Park, PA (US);
Rick L. Archey, Pleasant Hills, PA (US);
David M. Derikart, Pittsburgh, PA (US);
Bayer MaterialScience LLC, Pittsburgh, PA (US);
Abstract
In the method of the present invention at least a portion of the surface of a plastic article (e.g., a molded article of thermoplastic polycarbonate) is contacted with (e.g., immersed in) a treatment composition which includes one or more performance additives. The treatment composition contains: (i) at least one performance additive (e.g., an ultraviolet light absorber); (ii) water; (iii) at least one carrier represented by the following general formula I, wherein Ris a radical selected from the group consisting of linear or branched C-Calkyl, benzyl, benzoyl and phenyl, Ris a radical selected from the group consisting of linear or branched C-Calkyl, benzyl, benzoyl, phenyl and H, n is 2, 3 or 4, and m is 1 to 35; and (iv) a diol selected from at least one of linear or branched C-Caliphatic diols, poly(C-Calkylene glycol), cycloaliphatic diols having from 5 to 8 carbon atoms in the cyclic ring, monocyclic aromatic diols, bisphenols and hydrogenated bisphenols. In an embodiment of the present invention, the carrier is ethyleneglycol monobutyl ether, and the diol is diethylene glycol.