Tribological aromatic polyimide compositions
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United States of America Patent
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May 7, 2015
app pub date -
May 16, 2013
filing date -
May 16, 2012
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Abstract
A resin composition [composition (C)] comprising: from 40 to 95% by volume (% v) of at least one aromatic polyimide [polymer (PI)], from 0.1 to 15% by volume (% v) of at least one compound having the general formula AnXm [compound (AnXm)], wherein each A is independently selected from a group consisting of a metal atom (M) which is selected from the group consisting of Fe, Co, Ni, Cu, Zn, Mo, Ag, Cd, Sn, Pt, Au, Hg, Pb and Tl and a semimetal atom (SM) which is selected from the group consisting of As, Sb and Bi; wherein each X is independently selected from a group consisting of As, Sb, S, Se and Te; with the proviso that when A is As or Sb then X is different from A; and wherein n and m equal or different from each other, are independently 1, 2, 3 and 4, from 0.1 to 30% by volume (% v) of at least one carbon fiber, from 0 to 15% by volume (% v) of at least one filler selected from the group consisting of TiO2, ZrO2SiO2 or mixtures thereof, and wherein all % are based on the total volume of the composition (C).
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