公开(公告)号：JPH093236A

公开(公告)日：1997-01-07

申请号：JP17164295

申请日：1995-06-15

Applicant: MITSUI PETROCHEMICAL IND ,  MITSUBISHI PLASTICS IND

Inventor： TAKADA TOSHIMASA ,  MURAOKA NORIJI ,  MASANO KOJI

IPC: C08J9/24

Abstract: PURPOSE: To obtain a porous article which has a low bulk density and a uniform structure, retains low pressure loss and excellent mechanical properties such as tensile strength and is useful as a filter for separating fine materials, a carrier for a specific participating material in reaction process or treatment process, diffusing tube for air exposure tank and a penetrating tube or a drain tube for ground water. CONSTITUTION: An ultrahigh-molecular-weight cauliflower shaped polyethylene resin having 250-400μm average particle size and viscosity-average molecular weight of 500×10 -650×10 is sintered to form this article having numerous open cells.

公开(公告)号：JPH05247285A

公开(公告)日：1993-09-24

申请号：JP5000992

申请日：1992-03-06

Applicant: MITSUI PETROCHEMICAL IND

Inventor： MURATA KAZUHIKO ,  OKADA KEIJI ,  TOJO TETSUO ,  KAWASAKI MASAAKI ,  TAKADA TOSHIMASA

IPC: C08L9/02 ,  C08L19/00 ,  C08L21/00 ,  C08L23/18

Abstract: PURPOSE:To prepare the title compsn. excellent in strengths, oil resistance, adhesion to fiber, etc., by mixing a specific higher alpha-olefin copolymer with a (hydrogenated) nitrile rubber in a specified wt. ratio. CONSTITUTION:A higher a-olefin copolymer is produced by copolymerizing a 6-20C higher a-olefin (e.g. octene-1), an alpha,omega-diene of formula I (wherein n is 1-3; and R and R are each H or 1-8C alkyl)(e.g. 1,4-hexadiene), and a nonconjugated diene of formula II (wherein n is 1-5; R is 1-4C alkyl; and R and R are each H or 1-8C alkyl provided that they are not simultaneously H)(e.g. 4-methyl-1,4-hexadiene). The title compsn. is prepd. by mixing the copolymer with a nitrile rubber and/or a hydrogenated nitrile rubber in a wt. ratio of (5:95)-(95:5).

公开(公告)号：JPH055027A

公开(公告)日：1993-01-14

申请号：JP16037191

申请日：1991-07-01

Applicant: MITSUI PETROCHEMICAL IND

Inventor： UEKI HIROMI ,  FUKUTANI KENZABURO ,  TAKADA TOSHIMASA ,  TAKIMOTO KAZUYUKI

IPC: C08G63/60 ,  C08G63/19 ,  C08G63/85

Abstract: PURPOSE:To produce a wholly aromatic polyester having excellent mechanical characteristics and heat resistance, etc., and capable of carrying out melt forming without causing corrosion of production apparatus due to by-products by using a specific raw material and preferably specific catalyst. CONSTITUTION:A compound expressed by the formula I (Ar and Ar are phenyl; Ar is phenylene) is used as an aromatic dicarboxylic acid component and simultaneously (A) an aromatic oxycarboxylic acid (preferably parahydroxybenzoic acid) expressed by formula II (R is H or phenyl; Ar'' is divalent aromatic hydrocarbon group) and (B) aromatic diol (e.g. hydroquinone) expressed by formula III (Ar is aromatic group) and or the component B and (C) 4,4'-dihydroxydiphenyl ether expressed by formula IV (Ar is phenylene) or the components A, B and C are used and a tin compound expressed by formula V (R to R are alkyl or aryl; X and X are hydroxy, alkoxy or aryloxy) is preferably used as a catalyst to produce the objective wholly aromatic polyester.

公开(公告)号：JPH04337356A

公开(公告)日：1992-11-25

申请号：JP11054591

申请日：1991-05-15

Applicant: MITSUI PETROCHEMICAL IND

Inventor： IKEDA AKIO ,  TAKADA TOSHIMASA

IPC: C08L77/00

Abstract: PURPOSE:To obtain a polyamide resin having remarkably improved toughness by carrying out polycondensation of an oligo-condensate of a specific aromatic dicarboxylic acid and a diamine in the presence of nylon 636 in molten state under heating while applying shearing stress. CONSTITUTION:The objective polyamide resin composed of an aromatic polyamide and nylon 636 can be produced by carrying out polycondensation reaction of (A) an oligo-condensate composed of (A1) 60-100mol% of a unit derived from terephthalic acid and a 4-25C diamine and (A2) 0-40mol% of a unit derived from an aromatic dicarboxylic acid other than terephthalic acid and a 4-25C diamine and/or (B) an oligo-condensate composed of (B1) 30-90mol% of a unit derived from terephthalic acid and a 4-18C diamine and (B2) 10-70mol% of a unit derived from a 4-12C aliphatic dicarboxylic acid and a 4-18C diamine in molten state under application of shearing stress in the presence of (C) an aliphatic polyamide (nylon 636) produced by the polycondensation of hexamethylenediamine and a 34C aliphatic dicarboxylic acid.

公开(公告)号：JPH03296528A

公开(公告)日：1991-12-27

申请号：JP9956690

申请日：1990-04-16

Applicant: MITSUI PETROCHEMICAL IND

Inventor： TAKADA TOSHIMASA ,  IKEDA AKIO ,  SAKAI HIDENORI

IPC: C08G69/28 ,  C08G69/04

Abstract: PURPOSE:To prepare, at a low temp., a polyamide which is resistant to thermal degradation and stable in quality by melt polymerizing a dicarboxylic acid component contg. terephthalic acid and a diamine component contg. an aliph. diamine and/or an alicyclic diamine in the presence of a specific compd. CONSTITUTION:A dicarboxylic acid component contg. terephthalic acid (e.g. an acid component contg. terephthalic acid and adipic acid) and a diamine component contg. an aliph. diamine and/or an alicyclic diamine (e.g. hexamethylenediamine) are melt polymerized in the presence of a higher fatty acid salt of a metal selected from the group consisting of metals of the group I, II, and III (e.g. calcium 12-hydroxystearate).

公开(公告)号：JPH03177417A

公开(公告)日：1991-08-01

申请号：JP31519389

申请日：1989-12-06

Applicant: MITSUI PETROCHEMICAL IND

Inventor： TOGASHI EIKI ,  TAKADA TOSHIMASA

IPC: B29C45/00 ,  C08G59/20 ,  C08G59/32 ,  C08G59/40 ,  C08G59/62 ,  C08L63/00

Abstract: PURPOSE:To provide the title composition excellent in heat resistance, capable of injection molding with low modulus, comprising a specific epoxy resin, novolak-type phenolic resin, specific urea derivative and inorganic filler. CONSTITUTION:The objective composition comprising (A) an epoxy resin produced by etherification between (1) a trisphenol of formula I (R1-R3 are each pref. methyl; R4-R9 are each pref. tertiary butyl, etc.; R10 and R11 are each H or

公开(公告)号：JPH0343417A

公开(公告)日：1991-02-25

申请号：JP17953489

申请日：1989-07-12

Applicant: MITSUI PETROCHEMICAL IND

Inventor： ZENITANI YURIMASA ,  TAKADA TOSHIMASA

IPC: C08G69/28

Abstract: PURPOSE:To obtain a polyamide having high melting point, Young's modulus and Tg and excellent dyeing characteristics by polymerizing a specific dicarboxylic acid with hexamethylenediamine in the presence of a hypochlorite and polymerizing the prepared oligomer in a molten state in the presence of a specific phosphite. CONSTITUTION:A dicarboxylic acid comprising 50-95mol% terephthalic acid and 5-50mol% 4-12C aliphatic dicarboxylic acid (preferably succinic acid) is polymerized with hexamethylenediamine in the presence of a hypochlorite (preferably potassium hypochlorite) and the prepared oligomer is polymerized in a molten state in the presence of tetrakis(2,4-di-t-butylphenyl)-4-4'-biphenylene diphosphite to give a polyamide having 50-95mol% terephthalic acid component unit and 5-50mol% 4-12C aliphatic dicarboxylic acid component unit, a high degree of polymerization and a good hue and high content of hexamethylene terephthalamide component unit.

公开(公告)号：JPH033660B2

公开(公告)日：1991-01-21

申请号：JP13918682

申请日：1982-08-12

Applicant: MITSUI PETROCHEMICAL IND

Inventor： ISHITOKU TAKESHI ,  SHIMIZU SHIGEJI ,  TAKADA TOSHIMASA

IPC: C08K5/00 ,  C07B61/00 ,  C07D211/22 ,  C08K5/34 ,  C08K5/3412 ,  C08K5/3435 ,  C08L23/00 ,  C08L101/00

公开(公告)号：JPH024831A

公开(公告)日：1990-01-09

申请号：JP15408188

申请日：1988-06-22

Applicant: MITSUI PETROCHEMICAL IND

Inventor： ZENITANI YURIMASA ,  TAKADA TOSHIMASA

IPC: C08G69/26 ,  C08L77/00

Abstract: PURPOSE:To provide an amide resin composition composed of a polyamide resin consisting of a specific dicarboxylic acid component and a specific aliphatic diamine component and a filler, having excellent mechanical properties, heat-resistance, moldability, gas-barrier property, etc., and suitable as a material for a gas-barrier container, film, etc. CONSTITUTION:A polyamide resin is produced by the polycondensation of a mixture produced by compounding (A) a dicarboxylic acid component composed of 50-100mol% of 5-hydroxyisophthalic acid component and 0-50mol% of an aromatic dicarboxylic acid component (other than the 5-hydroxyisophthalic acid) and/or an aliphatic dicarboxylic acid component (preferably isophthalic acid, etc.) and (B) a 4-25C aliphatic diamine (preferably 1,6-diaminohexane, etc.). The polyamide resin is compounded with a filler (e.g., carbon black) to obtain the objective polyamide resin composition.

公开(公告)号：JPH01313519A

公开(公告)日：1989-12-19

申请号：JP14326288

申请日：1988-06-10

Applicant: MITSUI PETROCHEMICAL IND

Inventor： TAKADA TOSHIMASA

IPC: C08G59/62

Abstract: PURPOSE:To make it possible to obtain an epoxy resin composition which can give a cured product excellent in heat resistance and water resistance and has a low modulus and suitable as a sealing material for semiconductors by using a trisphenol compound as a curing agent. CONSTITUTION:An epoxy resin composition is formed by adding, usually, 20-120 pts.wt., desirably, 40-80 pts.wt. trisphenol compound having at least three phenolic hydroxyl groups in the molecule, represented by formula I (wherein R and R are each H, a 1-12C aliphatic hydrocarbon group which may have an unsaturated group, a monocyclic or fused ring aryl, or a 3-6C alicyclic hydrocarbon group which may have a halogen atom or an unsaturated bond), e.g., 1-[alpha- methyl-alpha-(4-hydroxyphenyl)ethyl]-4-[alpha,alpha-bis(4-hydroxypheny l)ethyl]benzene, as a curing agent to 100 pts.wt. epoxy resin (of an epoxy equivalent of 170-5000) especially of bisphenol A, AD or F type.