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    Process for preparing benzene carboxylic acids
    1.
    发明授权
    Process for preparing benzene carboxylic acids 失效
    制备苯甲酸羧酸的方法

    公开(公告)号：US3626000A

    公开(公告)日：1971-12-07

    申请号：US3626000D

    申请日：1968-01-05

    Applicant: TORAY INDUSTRIES

    Inventor： TSUNOI KAZUO ,  KATO TADAO

    IPC: C07C51/265 ,  C07C51/24 ,  C07C63/02

    CPC classification number: C07C51/265

    Abstract: In a process for preparing a benzene carboxylic acid by oxidizing a benzene derivative having at least one side-chain alkyl group with a molecular oxygen-containing gas in a lower aliphatic carboxylic acid solvent, an improvement which comprises using (A) a cobalt compound and (B) a substance selected from the group consisting of metallic silver and a silver compound, as catalysts, using (C) a substance selected from the group consisting of aldehydes, ketones, alcohols and paraldehyde, as a promoter.

    5.
    发明专利
    未知

    公开(公告)号：DE1645525A1

    公开(公告)日：1970-12-17

    申请号：DE1645525

    申请日：1967-09-22

    Applicant: TORAY INDUSTRIES

    Inventor： KATO TADAO ,  YANAGI MASANA ,  ICHIKAWA YOSHIMITSU ,  MISHIMA SHIZUOKA ,  OHOSUGI MASAYUKI ,  HIJIRI MASAO ,  MINAMI MUNEYOSHI ,  TSUTSUMI TADAO

    IPC: C08K5/16 ,  C08G51/60

    Abstract: 1,203,603. Stabilizing polyethylene terephthalates. TORAY INDUSTRIES Inc. 5 July, 1967 [24 Sept., 1966; 15 April, 1967], No. 30995/67. Heading C3R. Polyesters in which the recurring units consist wholly or predominantly of ethylene terephthalate units are stabilized against heat and oxidation by adding to them from 0.001 to 5% of at least one nitrogen containing compound of formula (a) where R 1 is hydrogen, a C 1-10 hydrogen group or a C 1-10 hydroxyalkyl group, R 2 and R 3 are hydrogen or C 1-10 hydrocarbon groups and n is 1 or 2; (b) where R 1 , R 2 , R 3 and n are as above and R is a di- or tri-valent benzene ring group; (c) where R 4 is a C 1-10 hydrocarbon group, R 5 is hydrogen, a C 1-10 hydrocarbon group or an alkoxyaryl group containing 1-10 carbon atoms in the alkyl moiety, R 6 is an alkoxyaryl group containing 1-10 carbon atoms in the alkyl moiety, and X is hydrogen, a hydroxyl group or the group (d) where R 7 is an alkylene or alkenylene group or a 1,2 - phenylene or 1,8 - naphthalene group whose nuclei may be substituted (e.g. by alkyl, halogen, carboxyl, alkoxycarbonyl or hydroxyalkoxycarbonyl), R 8 is a hydrogen atom, an acyl group, a hydrocarbon group which may be substituted by a carboxy, hydroxyl, alkoxycarbonyl or hydroxyalkoxycarbonyl group and n is 1 or 2; (e) where R 9 and R 10 are hydrogen atoms, phenyl groups or C 1-10 alkyl groups; or (f) where R 1 and R 2 are as defined above, R 14 is hydrogen or a C 1-10 hydrocarbon group and m is 1, 2 or 3. The stabilizers may be added before or during the preparation of the polyester or to the final product.

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