41.
    发明专利
    未知

    公开(公告)号:DE3012179A1

    公开(公告)日:1980-10-09

    申请号:DE3012179

    申请日:1980-03-28

    Abstract: Disclosed are novel alkenylphenylmaleimide derivatives having the general formula where R is an alkenyl radical of from 3 to 12 carbon atoms, R' is a hydrogen atom, a halogen atom, or a straight-chain or branched alkyl radical of from 1 to 4 carbon atoms, and n is a whole number of from 1 to 4, and linear dimers thereof as well as a process for the preparation of such maleimide compounds.

    POLYIMIDE RESIN COMPOSITION.
    42.
    发明公开
    POLYIMIDE RESIN COMPOSITION. 失效
    的聚酰亚胺树脂的制备。

    公开(公告)号:EP0267289A4

    公开(公告)日:1988-07-25

    申请号:EP87902709

    申请日:1987-04-08

    CPC classification number: H01B3/306 C08K7/02 C08L79/08

    Abstract: A polyimide resin composition, which comprises 100 parts by weight of a polyimide having repeating units represented by general formula (I), (wherein Y represents a direct bond, a divalent hydrocarbyl group having 1 to 10 carbon atoms, a hexafluoroisopropylidene group, a carbonyl group, a thio group, a sulfinyl group, a sulfonyl group or an oxido group, and R represents a tetravalent aliphatic group having 2 or more carbon atoms, alicyclic group, monocylic aromatic group, fused polycyclic aromatic group or non-fused cyclic aromatic group wherein aromatic groups are linked to each other directly or via a linking member) and 5 to 100 parts by weight of fibrous reinforcing material such as glass fibers, carbon fibers, potassium titanate fibers, aromatic polymide fibers, etc. This resin composition has excellent heat resistance, dimensional stability, and mechanical strength and is a useful material for manufacturing electric or electronic components, precision machine parts, etc. The polyimide to be used can be prepared from an aromatic ether diamine and a tetracarboxylic acid dianhydride, using 4,4'-bis(3-aminophenoxy)biphenyl, 2,2'-bis(4-(3-aminophenoxy)phenyl)propane, bis(4-(3-aminophenoxy)phenyl) sulfide, etc. as the ether diamine and pyromellitic dianhydride, 3,3',4,4'-benzophenonetetracarboxylic acid dianhydride, etc. as the tetracarboxylic acid dianhydride.

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