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. 18, 2014
Filed:
Jul. 12, 2006
Srinivas Siripurapu, Evansville, IN (US);
Naveen Agarwal, Evansville, IN (US);
Jan Pleun Lens, Breda, NL;
Srinivas Siripurapu, Evansville, IN (US);
Naveen Agarwal, Evansville, IN (US);
Jan Pleun Lens, Breda, NL;
Abstract
A flame retardant thermoplastic composition comprising in combination a polycarbonate homopolymer or copolymer comprising repeat carbonate units having the following structure: wherein Rand Rare independently at each occurrence a C-Calkyl, n and p are each an integer having a value of 1 to 4, and T is selected from the group consisting of C-Ccycloalkanes attached to the aryl groups at one or two carbons, C-Calkyl groups, C-Caryl groups, and C-Caryl alkyl groups; an impact modifier, wherein the impact modifier comprises wherein the impact modifier comprises a rubber modified thermoplastic resin comprising a discontinuous elastomeric phase dispersed in a rigid thermoplastic phase, and wherein the impact modifier has a specific mean particle size and Q value; and a flame retardant. The compositions have excellent scratch resistance as well as an improved balance of physical properties such as impact strength and spiral flow, while at the same time maintaining their good flame performance.