POLYIMIDE RESIN COMPOSITION
    11.
    发明专利

    公开(公告)号:AU1690288A

    公开(公告)日:1988-12-08

    申请号:AU1690288

    申请日:1988-05-31

    Abstract: This invention relates to molding resin compositions, and more particularly relates to polyimide resin compositions having markedly improved molding ability in addition to excellent high temperature stability, chemical resistance and mechanical strength. The polyimide resin composition of this invention consists of 99.9 to 50% by weight of the polyimide and 0.1 to 50% by weight of high temperature engineering polymer. The polyimide consists of recurring units of the following formula: wherein X is a sulfonyl radical or a carbonyl radical and R is a tetravalent radical selected from an aliphatic radical, alicyclic radical, monoaromatic radical, condensed aromatic radical and non-condensed aromatic radical. R is, for example, The high temperature engineering polymer is, for example, polyphenylene sulfide consisting of recurring units of the formula: aromatic polysulfone consisting of recurring units of the formula: or aromatic polyetherimide consisting of recurring units of the formula: l

    POLYMIDE RESIN COMPOSITION
    19.
    发明专利

    公开(公告)号:CA1339823C

    公开(公告)日:1998-04-14

    申请号:CA568192

    申请日:1988-05-31

    Abstract: This invention relates to molding resin compositions, and more particularly relates to polyimide resin compositions having markedly improved molding ability in addition to excellent high temperature stability, chemical resistance and mechanical strength. The polyimide resin compositions of this invention consist of 99.9 to 50% by weight of the polyimide and 0.1 to 50% by weight of high-temperature engineering polymer. The polyimide consists of recurring units of the following formula: (see fig. I) wherein X is direct bond, thio radical, or o- or p-phenylene dicarbonyl radical and R is a tetravalent radical selected from an aliphatic radical, alicyclic radical, monoaromatic radical, condensed aromatic radical and non-condensed aromatic radical. R is, for example, (see figs. II, III, IV and V) The high-temperature engineering polymer is, for example, polyphenylene sulfide consisting of recurring units of the formula: (see fig. I) aromatic polysulfone consisting of recurring units of the formula: (see fig. II) or aromatic polyetherimide consisting of recurring units of the formula: (see fig. III)

    20.
    发明专利
    未知

    公开(公告)号:DE3855276D1

    公开(公告)日:1996-06-13

    申请号:DE3855276

    申请日:1988-10-21

    Abstract: This invention relates to a method for preparing polyimide having good heat-stability and excellent flowability in a molten state. The polymide is prepared by reacting aromatic diamines such as 4,4 min -bis(3-aminophenoxy)biphenyl, bis[4-(3-aminophenoxy)phenyl] ketone and bis [4-(3-aminophenoxy)phenyl] sulfone; tetracarboxylic dianhydrides such as pyromellitic dianhydride, 3,3 min ,4,4 min -benzophenonetetracarboxylic dianhydride and bis(3,4-dicarboxyphenyl) ether dianhydride; and dicarboxylic anhydrides such as glutaric anhydride, 1,2-hexanedicarboxylic anhydride, phthalic anhydride and 3,4-benzophenonedicarboxylic anhydride. The molar ratio of aromatic diamine : tetracarboxylic dianhydride : dicarboxylic anhydride is 1:(0.9 to 1.0):(0.001 to 1.0). Another invention relates to polyimide composite materials which are excellent in mechanical strengths and processability. The materials contain the polyimide and fibrous reinforcing materials such as yarn, roving, tow, fabrics, mats and felts of glass fiber, carbon fibers or aromatic polyamide fibers.

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