Neutral static polycarbonates, methods of making, and...

Details Neutral static polycarbonates, methods of making, and... Neutral static polycarbonates, methods of making, and...

2011-08-16

2011-08-16

Buttner, David (Department: 1765)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C528S196000, C528S204000

Reexamination Certificate

active

07999041

ABSTRACT:
Disclosed herein is a method of preparing a polycarbonate composition comprising melt blending a first polycarbonate prepared by interfacial polymerization and having hydroxy end groups that are capped with endcapping groups, with a second polycarbonate prepared by melt polymerization and having hydroxy end groups that are capped with endcapping groups, wherein the second polycarbonate has a lower mole percent of endcapping groups than that of the first polycarbonate; wherein an article having a thickness of 3.2 mm and molded from the polycarbonate composition has a haze of less than 3 according to ASTM D1003-00; and wherein a flat article molded from the polycarbonate composition has a surface charge of −2 to +2 kV. A polycarbonate composition and complex article prepared according to the method are also disclosed.

REFERENCES:
patent: 6022943 (2000-02-01), Inoue et al.
patent: 6140457 (2000-10-01), LeGrand et al.
patent: 6194497 (2001-02-01), Willems et al.
patent: 6545122 (2003-04-01), Elsner et al.
patent: 6949596 (2005-09-01), Seidel et al.
patent: 6960641 (2005-11-01), O'Neil et al.
patent: 2003/0023024 (2003-01-01), Masuki et al.
patent: 2003/0105271 (2003-06-01), Brack et al.
patent: 2003/0153720 (2003-08-01), Miyamoto et al.
patent: 897950 (2004-07-01), None
patent: 0050488 (2000-08-01), None
Schnell, Chemistry and Physics of Polycarbonates, 1964; p. 45.
International Search Report for International Application No. PCT/US2007/073230, mailed Nov. 30, 2007, 5 pages.
Written Opinion for International Application No. PCT/US2007/073230, mailed Nov. 30, 2007, 8 pages.
ASTM D1003-00, Standard Test Method for Haze and Luminous Transmittance of Transparent Plastics, 6 pages.

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