Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Reexamination Certificate
2006-03-28
2006-03-28
Szekely, Peter (Department: 1714)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
C524S166000, C524S414000, C524S417000
Reexamination Certificate
active
07019059
ABSTRACT:
It has now been surprisingly found that addition of a phosphorous-containing oxy acid to a glass-filled polycarbonate composition substantially improves its fire retardant performance. Thus, the present invention provides a method for making a flame-retarded glass-filled polycarbonate resin comprising adding to the resin an effective flame-retardant amount of a phosphorous-containing oxy acid. Where appropriate, the melt strength of the polycarbonate is enhanced by the addition of an antidrip agent and the performance can be further enhanced by the addition of a flame retardant. Use of such a composition results in superior fire-retardant performance.
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PCT International Search Report for International Application No. PCT/US 30/38974, International filing date Dec. 5, 2003.
Lin Ye-Gang
Sheth Kapil Chandrakant
Singh Rajendra Kashinath
General Electric Company
Szekely Peter
LandOfFree
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