Maro Publications

Polycarbonate (PC) Materials

Patents with Abstracts

*6/27/2012

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Patents with Abstracts

8,193,264 
Thermoplastic resin composition and molded article thereof
 
Kumazawa et al of Toray Industries, Japan, developed a thermoplastic material which is excellent in flowability and mechanical properties with low warping, excellent laser transmittance and excellent laser weldability.  The resin is obtained by mixing (B) 0.1 to 4 parts by weight of a polyfunctional compound having three or more functional groups, in which at least one of the terminal structures having the functional groups is a structure containing alkylene oxide units, with (A) 100 parts by weight of a thermoplastic resin, and further provides a molded particle thereof. It is preferred that the (A) thermoplastic resin is one or more selected from a polyester resin and polycarbonate resin (RDC 6/27/2012)

8,178,603 
Flameproofed impact-modified polycarbonate compositions
 
Eckel of Bayer, Germany, developed an impact-modified polycarbonate with a first graft polymer containing silicone/acrylate composite rubber as the graft base, wherein the content of silicone rubber is 65-95 wt. % (based on the graft base), a second graft polymer containing a diene rubber, and phosphorus-containing flameproofing agent.  These materials have an optimum combination of good flameproofing at thin wall thicknesses, good resistance to chemicals and hydrolysis and low melt viscosity. (RDC 5/29/2012)

8,133,943 
Polylactic acid/polycarbonate resin composition and molded product using the same
 
Cho et al of Cheil Industries, South Korea, developed a polylactic acid/polycarbonate resin composition including (A) 100 parts by weight of a mixed resin including: (a1)) 10 to  90 wt % polycarbonate resin and (a2) 10 to 90 wt %  polylactic acid resin; (B) 1 to 50 parts by weight of a flame retardant based on 100 parts by weight of the mixed resin; (C) 1 to 30 parts by weight of an acryl-based copolymer based on 100 parts by weight of the mixed resin; and (D) 1 to 20 parts by weight of an impact-reinforcing agent based on about 100 parts by weight of the mixed resin.(RDC 5/3/2012)

8,133,939 
Polycarbonate resin composition, molded polycarbonate resin article, and method for production of the molded polycarbonate resin article
 
Isozaki, Satou and Tanaka of Idemitsu Kosan, Japan, developed a polycarbonate resin composition which is excellent in mechanical properties, physical properties, optical properties, and flame retardancy, including: a composition formed of an aromatic polycarbonate resin (A) and a glass filler (B) having a difference in refractive index of 0.002 or less from the aromatic polycarbonate resin; glossy particles (C-1) having an average particle diameter of 10 .mu.m or more and less than 50 .mu.m; glossy particles (C-2) having an average particle diameter of 50 to 300 .mu.m; and a silicone compound (D) having a reactive functional group; a polycarbonate resin molded article obtained by molding the polycarbonate resin composition; and a method of producing a polycarbonate resin molded article, involving subjecting the polycarbonate resin composition to injection molding at a mold temperature of 120.degree. C. or higher. (RDC 5/3/2012)

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Roger D. Corneliussen
Editor
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Copyright 2012 by Roger D. Corneliussen.
No part of this transmission is to be duplicated in any manner or forwarded by electronic mail without the express written permission of Roger D. Corneliussen
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** Date of latest addition; date of first entry is 5/3/2012.