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    PREPARATION OF ALIPHATIC MALEIMIDE
    83.
    发明专利
    PREPARATION OF ALIPHATIC MALEIMIDE 失效

    公开(公告)号：JPS5896066A

    公开(公告)日：1983-06-07

    申请号：JP19366881

    申请日：1981-12-03

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： OOBA MASAYUKI ,  TSUBOI HIKOTADA ,  KOGA NOBUSHI

    IPC: C07D207/452 ,  B01J31/00 ,  B01J31/04 ,  C07B61/00

    Abstract: PURPOSE:To prepare the titled substance useful as a monomer of a heat-resistant polymer, in high purity, by reacting an aliphatic maleamidic acid with a lower carboxilyc acid anhydride in an organic solvent in the presence of a stearic acid salt as a catalyst, and extracting the product with carbon tetrachloride, toluene, etc. CONSTITUTION:The compound of formula (Q is n-valent organic group such as 2-400C alkyl, alkylene, etc.) is made to react with a stearic acid salt (e.g. nickel stearate) in an organic solvent (e.g. 1,4-dioxane) using a lower carboxylic acid anhydride (e.g. acetic anhydride) as a catalyst to convert the compound to maleimide. The produced aliphatic maleimide is selectively extracted from the reaction liquid by using carbon tetrachloride, toluene, xylene, etc. If necessary a tertiary amine may be added to the reaction system to suppress the side reactions. The reaction temperature is 50-140 deg.C, preferably 60-120 deg.C.

    CURABLE RESIN COMPOSITION
    85.
    发明专利
    CURABLE RESIN COMPOSITION 失效

    公开(公告)号：JPS5871925A

    公开(公告)日：1983-04-28

    申请号：JP17016881

    申请日：1981-10-26

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： OOBA MASAYUKI ,  TSUBOI HIKOTADA ,  KOGA NOBUSHI

    IPC: C08L79/08 ,  C08G73/00 ,  C08G73/06 ,  C08G73/10 ,  C08G73/12 ,  C08L45/00 ,  C08L77/00

    Abstract: PURPOSE:To obtain titled composition of high heat resistance, rapid curability and high adhesive potential, also having high mechanical strength and outstanding processability, by blending N-(alkenylphenyl) maleimide derivatives in a phenolic hydroxyl group-contg. resin. CONSTITUTION:The objective composition can be obtained by blending (A) an N-(alkenylphenyl) maleimide derivative, its dimer and/or its polymer[e.g., N- (o-vinylphenyl)maleimide]and (B) a phenolic hydroxyl group-contg. resin (e.g., phenolic resin). Moreover, for higher adhesive potential, it is recommended that (C) an amino compound (e.g., aniline) is subjected to preliminary reaction with the component (A) and the resulting product is used as a component.

    THERMOSETTING RESIN COMPOSITION
    86.
    发明专利
    THERMOSETTING RESIN COMPOSITION 失效

    公开(公告)号：JPS57155252A

    公开(公告)日：1982-09-25

    申请号：JP3961581

    申请日：1981-03-20

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： TSUBOI HIKOTADA ,  KAWAMATA MOTOO ,  OOBA MASAYUKI ,  KOGA NOBUSHI

    IPC: C08L79/08

    Abstract: PURPOSE:To prepare the titled composition having excellenet compatibility and giving a cured product having excellent heat resistance, electrical characteristics and mechanical properties, by compounding an allyl compound with a polymaleimide having high solubility and obtained by the maleimidation of an aniline. formaldehyde resin. CONSTITUTION:The objective composition is prepared by mixing (A) a polymaleimide having a melt-initiation temperature of 1)(e.g. aniline) at a weight ratio of 5:95-95:5 based on the polymaleimide.

    MALEIMIDE DERIVATIVE AND ITS PREPARATION
    87.
    发明专利
    MALEIMIDE DERIVATIVE AND ITS PREPARATION 失效

    公开(公告)号：JPS56131566A

    公开(公告)日：1981-10-15

    申请号：JP3470180

    申请日：1980-03-21

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： OOBA MASAYUKI ,  KAWAMATA MOTOO ,  TSUBOI HIKOTADA ,  KOGA NOBUSHI

    IPC: C07D207/456 ,  C08F4/00 ,  C08G65/00 ,  C08G65/40 ,  C08G73/00 ,  C08G73/02 ,  C09D179/08

    Abstract: NEW MATERIAL:An isopropenylphenylmaleimide derivative of formula I (X1 is halogen; X2 is H or halogen; R is halogen, alkyl or alkoxyl; n is 0 or an integer 1- 4) and a bismaleimide derivative of formula II (X3 is X1; X4 is X2; R' is R; D is a bivalent organic group having one C=C double bond; n' is n). EXAMPLE:N-p-Isopropenylphenyl-3,4-dichloromaleimide and N,N'-[4-methyl-2,4- bis(p-3,4'-dichloromaleimidophenyl)]-1-pentene. USE:An agricultural chemical, a vulcanizing accelerator, an aquatic organism repellent, a coating material, an adhesive, a curing accelerator and a raw material for a thermoplastic and a thermosetting resins, etc. PROCESS:An isopropenylaniline derivative of formula III or an aromatic diamine derivative of formula IV is reacted with a maleic anhydride derivative of formula V in an organic solvent in the absence of a catalyst.

    PREPARATION OF POLYIMIDE
    90.
    发明专利
    PREPARATION OF POLYIMIDE 失效

    公开(公告)号：JPS5513706A

    公开(公告)日：1980-01-30

    申请号：JP8199178

    申请日：1978-07-07

    Applicant: MITSUI TOATSU CHEMICALS

    Inventor： TSUBOI HIKOTADA ,  KAWAMATA MOTOO ,  OOBA MASAYUKI ,  KOGA NOBUSHI

    IPC: C08G73/00 ,  C08G73/10 ,  C08G73/12

    Abstract: PURPOSE:To prepare a polyimide free from residual solvent, by reacting an unsaturated dicarboxylic acid anhydride with a polyamine using a ketone solvent in place of a conventional polar solvent. CONSTITUTION:A polyimide is prepared by reacting (A) an unsaturated dicarboxylic acid anhydride of formula I [Z is a difunctional organic group having C-C double bond, e.g. groups of formulas II, III, IV, or V, (R1-20 are H, 1-16C alkyl, halogen)], e.g. maleic anhydride, with (B) a polyamine having two or more amino groups in average, e.g. m-phenylenediamine, in (C) a ketone-based solvent, e.g. acetone. The preferable weight ratio of (C) to (B) is 2-40 to increase the yield and improve the qualities.

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