Electrically conductive thermoplastic polymer composition
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United States of America Patent
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Apr 26, 2011
Grant Date -
Jan 28, 2010
app pub date -
Jul 28, 2008
filing date -
Jul 28, 2008
priority date (Note) -
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Abstract
This invention relates to a thermoplastic polymer composition that exhibits an excellent combination of properties for use in manufacturing shipping combs for use in conjunction with moving actuators for hard disk drives. The thermoplastic polymer composition of this invention is comprised of (1) from 10 weight percent to 90 weight percent polycarbonate, (2) from 1 weight percent to 6 weight percent carbon nanotubes, (3) from 5 weight percent to 85 weight percent of a sulfone polymer, (4) from 0.5 weight percent to 10 weight percent of a functionalized rubbery polymer, and (5) from 0.5 weight percent to 5 weight percent of a lubricant selected from the group consisting of high density polyethylene and polyester wax, wherein all weight percentages are based upon the total weight of the thermoplastic polymer composition.
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