Low gloss polycarbonate/ABS blends
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United States of America Patent
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Oct 29, 1991
Grant Date -
N/A
app pub date -
Nov 27, 1989
filing date -
Dec 19, 1988
priority date (Note) -
Expired
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Abstract
A polycarbonate composition having present therein particles of rubber grafted with an ethylenically unsaturated aromatic monomer and either acrylonitrile or methacrylonitrile, characterized in that the particles have an average size of from 20 to 300 nm before being blended with the polycarbonate and agglomerate during blending to form aggregates of average size 500 to 10,000 nm, and in that the composition can be injection moulded to produce a moulding wherein the aggregates substantially retain their identity and the moulding has a surface of matt appearance.
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