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:
Apr. 19, 2011
Filed:
Mar. 23, 2007
Huihui LI, Shanghai, CN;
Sriramakrishna Maruvada, Evansville, IN (US);
Yaming Niu, Shijiazhuang, CN;
Jong-hyun Park, Kyunggi-do, KR;
Jingwu Yang, Shanghai, CN;
Huihui Li, Shanghai, CN;
Sriramakrishna Maruvada, Evansville, IN (US);
Yaming Niu, Shijiazhuang, CN;
Jong-Hyun Park, Kyunggi-do, KR;
Jingwu Yang, Shanghai, CN;
Abstract
A polymer composition is provided which is white and opaque (i.e. shields from light). The polymer composition comprises a blend of (i) a silicon-free polycarbonate polymer and (ii) a polycarbonate-polysiloxane copolymer; a whitener such as titanium dioxide; and (iii) a non-white colorant such as carbon black. The resulting composition, when molded and measured at a thickness of 0.75 mm, has an L* of greater than 80 and a % T of less than 1%. The composition also has good impact strength at low temperatures and good stability during processing.