Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Reexamination Certificate
2008-04-14
2009-12-01
Szekely, Peter (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
C524S140000, C524S141000
Reexamination Certificate
active
07625964
ABSTRACT:
The invention relates to a flame retardant polycarbonate composition which is comprised of a polycarbonate, a phosphoric acid ester, a functionalized acrylic polymer, and an alkyl methacrylate-diene-vinyl aromatic terpolymer, wherein the polycarbonate is present in the composition in an amount of at least about 85 weight percent, wherein the phosphoric acid ester is present at a level which is within the range of about 1 weight percent to about 12 weight percent, wherein the functionalized acrylic polymer is present at a level which is within the range of about 0.5 weight percent to about 4.5 weight percent, and wherein the alkyl methacrylate-diene-vinyl aromatic terpolymer is present at a level which is within the range of about 0.5 weight percent to about 4.5 weight percent, with the proviso that the sum of the amount of the functionalized acrylic polymer and the alkyl methacrylate-diene-vinyl aromatic terpolymer present in the composition does not total more than 5 weight percent.
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Negandhi Nishant
Zhu Jin
Ovation Polymer Technology and Engineered Materials, Inc.
Rockhill Alvin T.
Sisson Edwin A.
Szekely Peter
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