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765 条记录 (耗时 0.014 秒)

    PURIFICATION OF GLYCIDYL ACRYLATE OR GLYCIDYL METHACRYLATE
    91.
    发明专利
    PURIFICATION OF GLYCIDYL ACRYLATE OR GLYCIDYL METHACRYLATE 失效

    公开(公告)号：JPH04187682A

    公开(公告)日：1992-07-06

    申请号：JP31430590

    申请日：1990-11-21

    申请人： MITSUBISHI GAS CHEMICAL CO

    发明人： HONMA AKIHIRO ,  KUROKAWA MASAHIRO

    IPC分类号： C07D301/32 ,  C07D303/16

    摘要： PURPOSE:To efficiently remove non-reacted epichlorohydrin and by-produced chlorine compounds without lowering the recovery rate of the purified products, by subjecting crude glycidyl (meth)acrylate to a stripping treatment under a specific condition and subsequently distilling the treated product. CONSTITUTION:Crude glycidyl (meth)acrylate containing non-reacted epichlorohydrin and by-produced chlorine compounds is bubbled with mixed gases comprising oxygen gas and an inert gas (preferably nitrogen gas) in the presence of a quaternary ammonium salt (preferably tetraethyl ammonium chloride) to strip the epichlorohydrin and the by-produced chlorine compounds, followed by distilling the treated product to provide the objective purified product. The stripping treatment is preferably carried out under a reduced pressure of 2-50mmHg at a temperature which is lower than the boiling point of the solution containing the crude glycidyl (meth)acrylate, etc., and which is higher than the boiling point of the epichlorohydrin.

    PRODUCTION OF GLYCIDYL METHACRYLATE
    92.
    发明专利
    PRODUCTION OF GLYCIDYL METHACRYLATE 失效

    公开(公告)号：JPH04173783A

    公开(公告)日：1992-06-22

    申请号：JP30289090

    申请日：1990-11-08

    申请人： DAICEL CHEM

    发明人： FUJIKAWA HISAO ,  TAKEMOTO ETSUO

    IPC分类号： C07D301/00 ,  C07B61/00 ,  C07D303/16

    摘要： PURPOSE:To obtain the subject compound in high yield and activity without loss of the raw material caused by the polymerization of glycidol, etc., by carrying out the reaction while dropping a glycidol solution of a catalyst into methyl methacrylate maintained to the reaction temperature. CONSTITUTION:The objective compound is produced by carrying out the reaction while dropping a glycidol solution of a catalyst (preferably potassium acetate) into methyl methacrylate maintained to the reaction temperature. The glycidol solution of the catalyst is preferably cooled to a low temperature to an extent not to cause the precipitation of the catalyst. The glycidol solution of the catalyst is preferably diluted by using methyl methacrylate as the dilution solvent to prevent the lowering of the glycidol concentration.

    PRODUCTION OF GLYCIDYL COMPOUND
    93.
    发明专利
    PRODUCTION OF GLYCIDYL COMPOUND 失效

    公开(公告)号：JPH0482880A

    公开(公告)日：1992-03-16

    申请号：JP19872590

    申请日：1990-07-25

    申请人： NEW JAPAN CHEM CO LTD

    发明人： YAMANAKA MASAHIKO ,  HASHIMOTO SHIGEKI ,  TANI SHOJI

    IPC分类号： C07D303/16 ,  C07B61/00 ,  C07D301/27 ,  C07D301/28 ,  C07D303/20 ,  C07D303/22 ,  C07D303/36

    摘要： PURPOSE:To industrially and advantageously obtain the subject compound by cyclizing a halohydrin derivative prepared from alcohols, etc., and epihalohydrins, etc., in the presence of a dehydrohalogenating agent, introducing CO2 thereinto, neutralizing a basic compound and removing the residual basic compound using silica and alumina. CONSTITUTION:A halohydrin derivative obtained by addition reaction of a compound selected from alcohols, phenols, carboxylic acids and amines with epihalohydrins and/or halohydrins is cyclized in the presence of a dehydrohalogenating agent [e.g. a basic compound such as an alkali (earth) metal hydroxide]. After completing the cyclizing reaction, carbon dioxide is then introduced into the aforementioned reaction system to neutralize the basic compound. The basic compound remaining in the above-mentioned neutralized substance is subsequently removed with a solid acid consisting essentially of silica and alumina to afford the objective compound.

    PRODUCTION OF DIALDEHYDE DERIVATIVE
    95.
    发明专利
    PRODUCTION OF DIALDEHYDE DERIVATIVE 失效

    公开(公告)号：JPH03236343A

    公开(公告)日：1991-10-22

    申请号：JP3119290

    申请日：1990-02-09

    申请人： SUMITOMO PHARMA

    发明人： SHIMOJU TAKASHI ,  SHIMAKO KOZO ,  TANNO NORIHIKO

    IPC分类号： C07D303/16 ,  B01J31/02 ,  C07B61/00 ,  C07C45/58 ,  C07C47/133 ,  C07C47/198 ,  C07C49/523 ,  C07C67/28 ,  C07C67/30 ,  C07C69/14 ,  C07C69/67 ,  C07C69/708 ,  C07D301/12 ,  C07D303/12 ,  C07D303/22

    摘要： PURPOSE:To obtain the subject compound on an industrial scale at a low cost by epoxidizing an olefin derivative with hydrogen peroxide in the presence of sodium tungstate, phosphoric acid and a phase-transfer catalyst in a binary system containing a non-polar solvent and oxidizing the product with periodic acid. CONSTITUTION:The objective compound of formula III useful as an intermediate for a prostaglandin-like compound can be extremely easily produced in high purity and yield using inexpensive and highly safe hydrogen peroxide and periodic acid by reacting a compound of formula I [one of A and A is H and the other is (CH2)nX or A and A together form a protected CO; n is 1 or 2; X is acetoxy, COOR or OCH2COOR; R is 1-4C straight-chain or branched alkyl] with hydrogen peroxide in the presence of sodium tungstate, phosphoric acid and a phase-transfer catalyst in a binary system containing a non-polar solvent and reacting the resultant compound of formula II with meta-periodic acid in a binary system containing a non-polar solvent.

    PHOTO-SETTING RESIN COMPOSITION
    98.
    发明专利
    PHOTO-SETTING RESIN COMPOSITION 失效

    公开(公告)号：JPH02289611A

    公开(公告)日：1990-11-29

    申请号：JP2769090

    申请日：1990-02-06

    申请人： KANSAI PAINT CO LTD

    发明人： SEKO KENJI ,  WATABE TETSUSHI ,  IWAZAWA NAOZUMI

    IPC分类号： C08G59/20 ,  C07D303/16 ,  C08F4/12 ,  C08F20/32 ,  C08G59/00 ,  C08G59/32 ,  C08G59/68 ,  G03F7/029 ,  G03F7/038

    摘要： PURPOSE:To obtain the title composition which is useful as hard coat, ink, coating, sealant or the like, because it gives cured products of excellent weather, yellowing and heat resistances and high adhesion by using, as essential components, an acrylic resin including alicyclic epoxy groups and a photo- cationic polymerization initiator. CONSTITUTION:The subject composition contains (A) an acrylic resin having alicyclic epoxy groups (preferably having 2,000 to 300,000 number average molecular weight and more than 5 of alicyclic epoxy groups on the average in every molecule) and (B) an photo-cationic polymerization initiator, preferably an aromatic onium salt of the formula, as essential components.

    EPOXIDIZED (METH)ACRYLATE COMPOSITION
    99.
    发明专利
    EPOXIDIZED (METH)ACRYLATE COMPOSITION 失效

    公开(公告)号：JPH02188576A

    公开(公告)日：1990-07-24

    申请号：JP581689

    申请日：1989-01-12

    申请人： DAICEL CHEM

    发明人： FUKUYA KAZUAKI ,  KUWANA AKIHIRO

    IPC分类号： C07D301/36 ,  C07D303/16 ,  C08F20/32 ,  C08G59/20 ,  C08G59/32 ,  C09D4/02 ,  C09D133/04 ,  C09D133/06 ,  C09D163/00

    摘要： PURPOSE:To obtain the title high-quality composition useful as an intermediate raw material for resin for coating compound without problems of admixture of polymers, white clouding, etc., by blending a (meth)acrylic ester with a combination of at least two specific polymerization inhibitors. CONSTITUTION:A cyclohexenylmethyl (meth)acrylate compound shown by formula I (R is H or methyl) is epoxidized with an oxidizing agent to give a compound shown by formula II, which is blended with (A) hydroquinone, hydroquinone monomethyl ether, p-benzoquinone, cresol, t-butylcatechol, 2,4-dimethyl-6-t- butylphenol, etc., and (B) phosphoric acid, potassium phosphate, sodium ammonium hydrogenphosphate, pyrophosphoric acid, pyrophosphoric acid 2-ethylhexyl ester, tripolyphosphate, etc., in the ratio of 0.001-0.1wt.% component A and 0.01-0.2wt.% component B.