中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

87 records (took 0.022 seconds)

    POLYIMIDE RESIN COMPOSITION AND ITS PREPARATION
    31.
    发明专利
    POLYIMIDE RESIN COMPOSITION AND ITS PREPARATION 失效

    公开(公告)号：JPS5527326A

    公开(公告)日：1980-02-27

    申请号：JP9955478

    申请日：1978-08-17

    Applicant: UBE INDUSTRIES

    Inventor： SASAKI ICHIROU ,  ITAYA HIROSHI ,  KASHIMA MIKITO ,  YOSHIMOTO HATAAKI ,  YAMAMOTO SHIYUUJI ,  SASAKI YOSHIKAZU

    IPC: C08L79/08 ,  C08G73/00 ,  C08G73/10 ,  C08K5/13 ,  D01F6/74

    Abstract: PURPOSE:A powder of aromatic polyimide with high molecular weight and high imidization degree is dissolved in a halogenated phenol in high concentration to produce title resin composition readily dissolving a variety of substances and being used as a base for coating, adhesive or the like. CONSTITUTION:A powder of polyimide resin that contains more than 90% of recurring units of formula I (R1 is residue of the aromatic diamine from which amino groups are removed) and has an inherent viscosity of 0.5-6 (measured with 0.5g/100ml of 4-chlorophenol solution at 50 deg.C) is dissolve in molten halogenophenol of formula II or III (R2 is H, 1-3C alkyl; X is halogen atom) that melts below about 100 deg.C and boils belowe 300 deg.C in an amount of 5-15wt% based on the phenol by heating at a temperature between the melting and boiling points under agitation.

    EPOXY RESIN COMPOSITION
    32.
    发明专利
    EPOXY RESIN COMPOSITION 失效

    公开(公告)号：JPS559626A

    公开(公告)日：1980-01-23

    申请号：JP8194378

    申请日：1978-07-07

    Applicant: UBE INDUSTRIES

    Inventor： SASAKI ICHIROU ,  ITAYA HIROSHI ,  KASHIMA MIKITO

    IPC: C09D5/03 ,  C08G59/00 ,  C08G59/42

    Abstract: PURPOSE:An epoxy resin composition that contains a specific organic carboxylic dianhydride as a curing agent, thus giving cured products with excellent heat resistance, mechanical and electrical properties. CONSTITUTION:2,2,3',4'-Biphenyltetracarboxylic dianhydride (a-BPDA) of formula I is added to an epoxy resin (EP) in an amount of 0.2-1.5, preferably 0.25-1.2 equivalent ratio given in equation II. When mixed, a powder of a-BPDA with particle sizes of about 0.1-1000 microns is added to the epoxy resin heated above the melting point, about 150-170 deg.C, and completely dissolved therein.

    NEW OXETANESULFONIC ESTER, OXETANE-DERIVED NOVOLAK RESIN USING THE SAME AND ITS PRODUCTION
    34.
    发明专利
    NEW OXETANESULFONIC ESTER, OXETANE-DERIVED NOVOLAK RESIN USING THE SAME AND ITS PRODUCTION 失效

    公开(公告)号：JP2000336133A

    公开(公告)日：2000-12-05

    申请号：JP14865199

    申请日：1999-05-27

    Applicant: UBE INDUSTRIES

    Inventor： KASHIMA MIKITO ,  NODA YUMITATSU ,  HOSHINO HARUTOSHI ,  MACHIDA RIICHI

    IPC: C07D305/06 ,  C08G8/36

    Abstract: PROBLEM TO BE SOLVED: To produce a new compound capable of carrying out a photocationic polymerization and a thermal polymerization using an acidic catalyst and providing a resin useful for varnishes, etc. SOLUTION: This compound is represented by the formula (R' is H or a 1-6C alkyl; M is a monovalent acidic group such as mesyl, tosyl or benzenesulfonyl), e.g. 3-ethyl-3-hydroxymethyloxetane-p-toluenesulfonate. Furthermore, the above compound is produced by dropping an aqueous solution of an alkali metal salt (e.g. an aqueous solution of sodium hydroxide) at 30 wt.% concentration into a mixture comprising a 3-substituted-3-hydroxymethyloxetane (e.g. 3-ethyl-3-hydroxymethyloxetane), a sulfonyl chloride (e.g. methylsulfonyl chloride), a quaternary ammonium salt (e.g. a tetraalkylammonium salt) and a solvent (e.g. benzene) at a rate so that the temperature of the reactional mixture does not exceed 10 deg.C.

    FLUORENE DERIVATIVE HAVING OXETANE RING
    35.
    发明专利
    FLUORENE DERIVATIVE HAVING OXETANE RING 失效

    公开(公告)号：JP2000336082A

    公开(公告)日：2000-12-05

    申请号：JP14959599

    申请日：1999-05-28

    Applicant: UBE INDUSTRIES

    Inventor： KASHIMA MIKITO ,  NODA YUMITATSU ,  HOSHINO HARUTOSHI ,  MACHIDA RIICHI

    IPC: C07D305/06

    Abstract: PROBLEM TO BE SOLVED: To obtain a new compound producible from a readily available raw material, capable of carrying out cationic polymerization, excellent in heat resistance, mechanical and optical characteristics, adhesion, etc., useful for producing a photo-setting or a thermosetting resin utilized as molded products, coating materials, insulating materials, photomolding materials, etc. SOLUTION: This compound is represented by formula I (R1 and R2 are each H or a 1-6C alkyl; and (n) is 0-10), e.g. 9,9-bis 2-methyl-4-[2-(3- oxetanyl)]butoxyphenyl}fluorene. The compound represented by formula I is obtained by converting a fluorene compound represented by formula II into an alkali metal alcoholate and reacting the produced alkali metal alcoholate with sulfonic esters of 3-hydroxymethyloxetanes represented by formula III (R3 is a 1-6C alkyl or a 6-12C aryl), preferably at 50-120 deg.C. The compound represented by formula III is preferably used in an amount of 2.0-3.0 mol based on 1 mol of the fluorene compound represented by formula II.

    PRODUCTION OF BISOXETANE ETHERS
    36.
    发明专利
    PRODUCTION OF BISOXETANE ETHERS 失效

    公开(公告)号：JP2000302774A

    公开(公告)日：2000-10-31

    申请号：JP11856899

    申请日：1999-04-26

    Applicant: UBE INDUSTRIES

    Inventor： KASHIMA MIKITO ,  NODA YUMITATSU ,  HOSHINO HARUTOSHI ,  MACHIDA RIICHI

    IPC: C07D305/06 ,  C08G65/18

    Abstract: PROBLEM TO BE SOLVED: To obtain the subject bisoxetane ether that is useful as paint and coating materials having excellent heat resistance, mechanical properties, flatness and adhesion by allowing a sulfonic ester of 3-alkyl-3-hydroxymethyloxetane to react with a diol in the presence of a base. SOLUTION: A compound of formula I (R is a 1-6C alkyl; and X is methyl, phenyl or the like) [for example, 2-(3-oxetane)propyl mesilate)] and a compound of the formula: HO-Y-OH (Y is a 2-16C divalent aliphatic chain group) (for example, ethylene glycol) are allowed to react with each other in the presence of a base in a organic solvent (for example, dimethyl sulfoxide) in an amount of 500-2,000 ml per mole of the compound of formula I to give the objective compound of formula II (Y is -CH2CH=CHCH2-) that bears the cationically polymerizable oxetane ring.

    PRODUCTION OF DICHLRODIPHENYLSULFONE
    37.
    发明专利
    PRODUCTION OF DICHLRODIPHENYLSULFONE 失效

    公开(公告)号：JPH06172298A

    公开(公告)日：1994-06-21

    申请号：JP19033593

    申请日：1993-07-30

    Applicant: UBE INDUSTRIES

    Inventor： KASHIMA MIKITO ,  NODA YUMITATSU ,  AKIBA YOSHIICHI

    IPC: C07C315/00 ,  C07C315/06 ,  C07C317/14

    Abstract: PURPOSE:To additionally produce dichlorodiphenylsulfone by efficiently and separating 4-chlorobenzenesulfonic acid form a reaction mixture prepared by condensation through dehydration from chlorobenzene and 4- chlorobenzenesulfonic acid and reusing 4-chlorobenzenesulfonic acid. CONSTITUTION:A process for synthesizing dichlorodiphenylsulfone by condensing chlorobenzene with 4-chlorobenzenesulfonic acid through dehydration, a process for adding water in a molar ratio of unreacted 4-chlorobenzenesulfonic acid and water of 1:0.8-1:2 and for precipitating and separating 4- chlorobenzenesulfonic acid as monohydrate and a process for additionally synthesizing dichlorodiphenylsulfone by dehydrating the recovered 4- chlorobenzenesulfonic acid monohydrate and condensing the 4- chlorobenzenesulfonic acid with chlorobenzene through dehydration are repeated to produce dichlorodiphenylsulfone.

    LIQUID CRYSTAL DISPLAY DEVICE
    40.
    发明专利
    LIQUID CRYSTAL DISPLAY DEVICE 失效

    公开(公告)号：JPH0416826A

    公开(公告)日：1992-01-21

    申请号：JP11972590

    申请日：1990-05-11

    Applicant: UBE INDUSTRIES

    Inventor： YOSHIMOTO HATAAKI ,  ITO KATSUHIRO ,  KASHIMA MIKITO

    IPC: G02F1/1345

    Abstract: PURPOSE:To maintain the continuity of a display screen by using a 1st substrate formed by arraying the uniting scanning line unit substrates laterally in two columns and longitudinally in plural rows and a 2nd substrate formed by arranging and uniting signal line unit substrates laterally in plural columns and longitudinally in two rows. CONSTITUTION:The device consists of the 1st substrate 2 formed by arranging and uniting the scanning line unit substrates 2A in two columns laterally and in plural rows longitudinally and the 2nd substrate 3 formed by arranging and uniting the signal line unit substrates 3A in plural columns laterally and two rows longitudinally, and an electrode lead-out part 45 is provided at the outer peripheral part of the substrates. Namely, the picture element electrodes are at regular interval as in the unit substrates even at the joint parts of the unit substrates. Further, polymer dispersed liquid crystal itself has adhesive strength, so the liquid crystal serves as an adhesive and spacers between both the substrates. Consequently, a matrix type large-screen liquid crystal display device which has inconspicuous joints is obtained.

Patent Agency Ranking