公开(公告)号：JPH055033A

公开(公告)日：1993-01-14

申请号：JP30507191

申请日：1991-11-20

Applicant: MITSUI TOATSU CHEMICALS

Inventor： OIKAWA HIDEAKI ,  KOGA NOBUSHI ,  TAMAI MASAJI ,  YAMAGUCHI TERUHIRO

IPC: C08G73/10

Abstract: PURPOSE:To obtain a polyimide having excellent heat-resistant stability, maintaining the stability for many hours by blocking molecular ends of a polymer molecule with a dicarboxylic acid anhydride containing a specific repeating structural unit. CONSTITUTION:A polyimide having a structural unit shown by formula II wherein molecular ends of a polymer molecule are sealed with a dicarboxylic acid anhydride shown by formula I (Z is bifunctional group selected from 6-15C monocyclic aromatic residue which does not substantially contain substituent group or is replaced with a group having no reactivity with amine or dicarboxylic acid anhydride, condensed polycyclic aromatic residue and noncondensed polycyclic aromatic group wherein aromatic groups are directly connected or mutually bonded through crosslinking member). The polyimide is obtained by reacting a diamine compound shown by formula III with 0.9-1.0mol based on 1mol diamine compound of a tetracarboxylic acid dianhydride shown by formula IV in the presence of 0.001-1.0mol based on 1mol diamine compound of a dicarboxylic acid anhydride shown by formula I.

公开(公告)号：JPH04249532A

公开(公告)日：1992-09-04

申请号：JP41550790

申请日：1990-12-28

Applicant: MITSUI TOATSU CHEMICALS

Inventor： KATAOKA TOSHIYUKI ,  OIKAWA HIDEAKI ,  KOGA NOBUSHI ,  TAMAI MASAJI ,  YAMAGUCHI TERUHIRO

IPC: C08G69/28 ,  C08G69/32 ,  C08K7/02 ,  C08L77/00 ,  C08L77/10

Abstract: PURPOSE:To improve mechanical strengths, dimensional stability, heat resistance, and processability, and reduce water absorption by polycondensing a specific diamine with an arom. dicarboxylic acid dihalide in the presence of a dehydrohalogenating agent. CONSTITUTION:A diamine component comprising 6,6'-bis(4- aminophenoxy)-3,3,3',3'-tetramethyl-1,1'-spiroinadane and/or 6,6-bis(3- aminophenoxy)-3,3,3',3'-tetramethyl-1,1'-spiroindane of formula I is polycondensed with an arom. dicarboxylic acid dihalide in the presence of a dehydrohalogenating agent in an org. solvent at 60 deg.C or lower to give an arom. polyamide of formula II [wherein X is a condensed polycyclic arom. group or a group of formula III {wherein Y is a direct bond, -O-, -S-, -SO2-, -CH2-, -C(CH3)2-, or -C(CF3)2-; R is 1-4C alkyl, alkoxy, halogen, or phenyl; a is 0-2; and b is 0-4}; and n is 1-1000].

公开(公告)号：JPH04183723A

公开(公告)日：1992-06-30

申请号：JP31129290

申请日：1990-11-19

Applicant: MITSUI TOATSU CHEMICALS

Inventor： KATAOKA TOSHIYUKI ,  OIKAWA HIDEAKI ,  IIYAMA KATSUAKI ,  TAMAI MASAJI ,  YAMAGUCHI TERUHIRO

IPC: C08G69/32 ,  C08K7/02 ,  C08L77/00 ,  C08L77/10

Abstract: PURPOSE:To obtain the subject polyamide, having excellent heat resistance, processability and thermal stability and useful as electrical and electronic parts, etc., by polycondensing a specific biphenyl with an aromatic dicarboxylic acid dihalide in the presence of a dehydrohalogenating agent. CONSTITUTION:4,4'-Bis(3-aminophenoxy)biphenyl expressed by formula I is polycondensed with an aromatic dicarboxylic acid dihalide in the presence of a dehydrohalogenating agent in an organic solvent at a reaction temperature of

公开(公告)号：JPH04175341A

公开(公告)日：1992-06-23

申请号：JP29879490

申请日：1990-11-06

Applicant: MITSUI TOATSU CHEMICALS

Inventor： YAMATANI NORIMASA ,  TAMAI MASAJI ,  OTA MASAHIRO ,  YAMAGUCHI TERUHIRO

IPC: C08G73/12

Abstract: PURPOSE:To prepare the title compsn. having low water absorptivity and giving a cured article excellent in mechanical strengths (esp. impact strength) and toughness by preparing a prepolymer by thermally reacting a specific bismaleimide compd. with a specific diamine compd. CONSTITUTION:The title compsn. is prepd. by preparing a prepolymer by thermally reacting a bismaleimide compd. of formula I (wherein R is H or CH3) with a diamine comb. of formula II (wherein X is a 1-10C divalent hydrocarbon group, hexafluorinated isopropylidene, carbonyl, thio, sulfinyl, sulfonyl, oxo, or a group of formula III or IV; and Y is a direct bond, a 1-10C divalent hydrocarbon group, hexafluorinated isopropylidene, carbonyl, thio, sulfonyl, or oxo) (e.g. 4,4'-diaminodithenylmethane) in the absence or presence of an org. solvent at 70-220 deg.C. The compsn. has low water absorptivity and good storage stability and gives a cured article excellent in mechanical strengths (esp. impact strength) and toughness.

公开(公告)号：JPH0344568B2

公开(公告)日：1991-07-08

申请号：JP20074383

申请日：1983-10-28

Applicant: MITSUI TOATSU CHEMICALS

Inventor： TAMAI MASAJI ,  YAMAGUCHI KEISABURO ,  YAMAGUCHI TERUHIRO ,  OONUMA YASUO

IPC: C08G73/00 ,  C08G73/10

公开(公告)号：JPH02173041A

公开(公告)日：1990-07-04

申请号：JP32632788

申请日：1988-12-26

Applicant: MITSUI TOATSU CHEMICALS

Inventor： OTA MASAHIRO ,  KAWASHIMA SABURO ,  IIYAMA KATSUAKI ,  TAMAI MASAJI ,  OIKAWA HIDEAKI ,  YAMAGUCHI TERUHIRO

IPC: C08G73/10

Abstract: PURPOSE:To obtain polyimide having excellent moldability even after being kept at high temperatures for a long time without detriment to the excellent properties inherent in polyimide by reacting a specified diamine with a tetracarboxylic acid dianhydride in the presence of a specified monoamine. CONSTITUTION:A component (i) is reacted with a component (ii) in the presence of a component (iii) in the production of a polyimide via a polyamic acid to form a polyimide having a basic skeleton comprising repeating units of formula III (wherein R is the same as that of formula II). Component (i): a diamine of formula I; component (ii): a tetracarboxylic acid dianhydride of formula II (wherein R is a tetravalent group selected from among a 2C or higher aliphatic group, a cycloaliphatic group, a monocyclic aromatic group, a condensed polycyclic aromatic group and a noncondensed polycyclic aromatic group consisting of aromatic groups bonded together directly or through bridging members; and component (iii): aliphatic and/or aromatic monoamines of the formula: Z-NH2 (wherein Z is a 1-10C aliphatic group and/or a cycloaliphatic group). The proportions of components (i), (ii) and (iii) are such that 0.9-1.0mol of component (i) and 0.001-1.0mol of component (iii) are present per mol of component (ii).

公开(公告)号：JPH02133427A

公开(公告)日：1990-05-22

申请号：JP28672788

申请日：1988-11-15

Applicant: MITSUI TOATSU CHEMICALS

Inventor： OTA MASAHIRO ,  TAMAI MASAJI ,  YAMAGUCHI TERUHIRO

IPC: C08G73/10 ,  C08G75/00 ,  C08G75/20

Abstract: PURPOSE:To prepare a thermally stable polyimide with an excellent moldability by reacting a specific diamine with a specific tetracarboxylic acid dianhydride in the presence of a specific acid anhydride and then imidating the resulting polyamic acid. CONSTITUTION:A diamine (A) comprising bis(3-aminophenyl) sulfone of formula I is reacted with a tetracarboxylic acid dianhydride (B) of formula II (wherein R is a tetravalent 2C or higher aliph., cycloaliph., monocyclic arom., or condensed polycyclic arom. group) in the presence of a dicarboxylic acid anhydride (C) of formula III (wherein Z is a monocyclic arom., condensed polycyclic arom. group, etc.) in the molar ratio of A:B:C of 1.0:0.9-1.0:0.001-1.0 to give a polyamic acid, which is thermally or chemically imidated to give a thermally stable polyimide with an excellent moldability and with a backbone structure consisting of repeating units of formula IV (wherein R is the same as above).

公开(公告)号：JPH0218450A

公开(公告)日：1990-01-22

申请号：JP16739388

申请日：1988-07-05

Applicant: MITSUI TOATSU CHEMICALS

Inventor： OIKAWA HIDEAKI ,  OTA MASAHIRO ,  KAWASHIMA SABURO ,  IIYAMA KATSUAKI ,  TAMAI MASAJI ,  YAMAGUCHI TERUHIRO

IPC: C08L79/08

Abstract: PURPOSE:To obtain the subject composition having excellent heat-resistance, chemical resistance, etc., good moldability and low water-absorption by compounding an aromatic polamide imide with a specific amount of a specific polyimide. CONSTITUTION:The objective composition is produced by compounding (A) 100pts.wt. of an aromatic polyamide imide having the recurring unit of formula I (Ar is trivalent aromatic group containing one or more benzene rings; Z is bivalent organic group) with (B) 1-100pts.wt. of a polyimide having a recurring unit of formula II (R is tetravalent group selected from >=2C aliphatic group, cycloaliphatic group, etc.).

公开(公告)号：JPH0218419A

公开(公告)日：1990-01-22

申请号：JP16739288

申请日：1988-07-05

Applicant: MITSUI TOATSU CHEMICALS

Inventor： OTA MASAHIRO ,  KAWASHIMA SABURO ,  IIYAMA KATSUAKI ,  TAMAI MASAJI ,  OIKAWA HIDEAKI ,  YAMAGUCHI TERUHIRO

IPC: C08G73/10

Abstract: PURPOSE:To obtain the subject polyimide excellent in molding processability by reacting a diaminobenzophenone with a specific tetracarboxylic acid anhydride and dicarboxylic acid anhydride and imidating the resultant polyamic acid. CONSTITUTION:(A) One mol 3,3'-diaminobenzophenone expressed by formula I is reacted with (B) 0.9-1.0mol tetracarboxylic acid dianhydride expressed by formula II (R is tetrafunctional groups, such as >=2C aliphatic or monocyclic aromatic group) and (C) 0.001-1.0mol dicarboxylic acid anhydride expressed by formula III (Z is bifunctional group, such as monocyclic aromatic or condensed polycyclic aromatic group) to provide a polyamic acid, which is then thermally or chemically imidated to afford (D) the objective polyimide having recurring units expressed by formula IV as a basic skeleton.

公开(公告)号：JPH01282259A

公开(公告)日：1989-11-14

申请号：JP11040588

申请日：1988-05-09

Applicant: MITSUI TOATSU CHEMICALS

Inventor： TAMAI MASAJI ,  OTA MASAHIRO ,  KAWASHIMA SABURO ,  IIYAMA KATSUAKI ,  OIKAWA HIDEAKI ,  YAMAGUCHI TERUHIRO

IPC: C08L79/08

Abstract: PURPOSE:To obtain the subject composition excellent in heat and chemical resistance, mechanical strength and moldability by mixing a specified polyimide with an aromatic polyetherimide in a specified amount.. CONSTITUTION:(A) 99.9-50wt.% polyimide having a repeating unit expressed by formula I (R is tetravalent group selected from group composed of noncondensed polycyclic aromatic groups where >=2C aliphatic group, cyclic aliphatic group, etc., are mutually connected directly or through crosslinking members) is blended with (B) 0.1-50wt.% aromatic polyetherimide composed of, as the main unit, a repeating unit of formula II (Z is trifunctional aromatic group; Ar is difunctional aromatic group) as a fluidization accelerator.