Sterically hindered phenolic phosphonates and polycarbonate...

Details Sterically hindered phenolic phosphonates and polycarbonate... Sterically hindered phenolic phosphonates and polycarbonate...

2011-04-05

2011-04-05

Szekely, Peter (Department: 1761)

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

Synthetic resins

Processes of preparing a desired or intentional composition...

C524S130000, C558S179000, C558S214000, C558S215000

Reexamination Certificate

active

07919548

ABSTRACT:
Disclosed herein is a sterically hindered phenolic phosphonate resin compound represented by the following Chemical Formula 1. The present invention also provides a polycarbonate resin composition including the sterically hindered phenolic phosphonate resin compound as a flame retardant.wherein R1is a C1-C6alkyl group or a C6-C14aryl group; each R2is independently a C1-C6linear alkyl group or a C3-C6branched alkyl group; and each n is independently 1-3.

REFERENCES:
patent: 4248976 (1981-02-01), Clubley et al.
patent: 4692488 (1987-09-01), Kress et al.
patent: 5061745 (1991-10-01), Wittmann et al.
patent: 7569629 (2009-08-01), Hong et al.
patent: 57-105435 (1982-06-01), None
patent: 05-001084 (1993-01-01), None
patent: 10-0560151 (2006-03-01), None
Korean Office Action in counterpart Korean Application No. 10-2007-0127462, dated Mar. 31, 2009.

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