发明授权
- 专利标题: Polyimide resin-fluoropolymer compositions
- 专利标题(中): 聚酰亚胺树脂 - 含氟聚合物组合物
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申请号: US63962申请日: 1987-06-19
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公开(公告)号: US4816516A公开(公告)日: 1989-03-28
- 发明人: Norimasa Yamaya , Nobuhito Koga , Kenichi Baba
- 申请人: Norimasa Yamaya , Nobuhito Koga , Kenichi Baba
- 申请人地址: JPX Tokyo
- 专利权人: Mitsui Toatsu Chemicals, Inc.
- 当前专利权人: Mitsui Toatsu Chemicals, Inc.
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX61-151742 19860630
- 主分类号: C08L27/12
- IPC分类号: C08L27/12 ; C08L79/08 ; C08L87/00
摘要:
This invention is a polyimide resin composition containing 100 parts by weight of polyimide having recurring units of the following formula: ##STR1## wherein Y is a bond, divalent hydrocarbon radical having from 1 to 10 carbons, hexafluorinated isopropylidene radical, carbonyl radical, thio radical, sulfinyl radical, sulfonyl radical or oxide, and R is a tetravalent radical of aliphatic radical having at least 2 carbons, alicyclic radical, monoaromatic radical, condensed polyaromatic radical, or noncondensed polyaromatic radical wherein aromatic radicals are mutually connected with a bond or a crosslinking function and from 5 to 100 parts by weight of fluororesin. The resin composition can provide molded products which are excellent in high-temperature stability, dimensional stability and mechanical strength and moreover have a low friction coefficient and good wear resistance. Therefore, the composition is useful as the material for electric and electronic devices, precision instrument parts etc.Polyimide of this invention can be prepared from aromatic diamines and tetracarboxylic acid dianydrides. Suitable aromatic diamines are 4,4'-bis(3-aminophenoxy)biphenyl, 2,2-bis[4-(3-aminophenoxy)phenyl]propane, bis[4-(3aminophenoxy)phenyl] sulfide etc. Suitable tetracarboxylic acid dianhydrides are pyromellitic dianhydride and 3,3', 4,4'-benzophenonetetracarboxylic dianhydride.Representative fluororesin which can be used in this invention is polytetrafluoroethylene.
公开/授权文献
- US6125467A Method and apparatus for partial word read through ECC block 公开/授权日:2000-09-26