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    Oxidation inhibitor
    3.
    发明授权
    Oxidation inhibitor 失效
    氧化抑制剂

    公开(公告)号：US3630991A

    公开(公告)日：1971-12-28

    申请号：US3630991D

    申请日：1970-01-07

    Applicant: EXXON RESEARCH ENGINEERING CO

    Inventor： SCHUTZE HENRY G ,  BOWN DELOS E

    IPC: C08K5/372 ,  C08F45/58

    CPC classification number: C08K5/372 ,  C08L23/02

    Abstract: A POLYOLEFIN COMPOSITION IS STABILIZED WITH A SULFURCONTAINING ESTER COMPOUND FORMED BY REACTING A SULFURCONTAINING CARBOXYLIC ACID WITH AN ALCOHOL DERIVED FROM A RESIN ACID, E.G., TETRAHYDROABIETYL ALCOHOL, DIHYDROABIETYL ALCOHOL, DEHYDROABIETYL ALCOHOL, TETRAHYDROPIMARIC ALCOHOL, DIHYDROPIMARIC ALCOHOL, AND MIXTRUES THEREOF.

    Sulfur-containing carboxylic acid esters
    9.
    发明授权
    Sulfur-containing carboxylic acid esters 失效
    含硫羧酸酯

    公开(公告)号：US3494947A

    公开(公告)日：1970-02-10

    申请号：US73456068

    申请日：1968-06-05

    Applicant: EXXON RESEARCH ENGINEERING CO

    Inventor： SCHUTZE HENRY G ,  BOWN DELOS E

    IPC: C07C29/17 ,  C07C317/00 ,  C08K5/05 ,  C08K5/372 ,  C08L23/02 ,  C09B1/54 ,  C09F1/04 ,  C07C149/20 ,  C08F45/58

    CPC classification number: C07C29/172 ,  C07C323/00 ,  C07C2603/26 ,  C08K5/05 ,  C08K5/372 ,  C09B1/503 ,  C09B1/545 ,  C09F1/04 ,  C08L23/02 ,  C07C31/137

    Abstract: Di-esters of thiodipropionic acid, HOOC-CH2-CH2-S-CH2-CH2-COOH, with cyclic terpene alcohols are used as costabilizers for polyolefins. Suitable cyclic terpene alcohols are, for example, tetrahydroabietyl, dihydroabietyl and dehydroabietyl alcohols, a -, b -, and g -terpinols and their hydrogenated derivatives (saturated alcohols), menthol and borneol. A mixture of esters, in particular a mixture of the esters of tetrahydroabietyl, dihydroabietyl and dehydroabietyl alcohols, may be used. The other stabilizer present in the stabilized mixture is a "hindered" phenol, i.e. a phenol having at least one C4 or higher tertiary alkyl group in the position ortho to the hydroxy group, e.g. 2,6 - di - t - butyl - 4 - methylphenol; 2-t-butylphenol; 4,41 - butylidene - bis - (3 - methyl - 6-t-butylphenol); 2,21-methylene-bis(4-methyl-6-t - butylphenol); 4,41 - methylene - bis(2,6 - di-t - butylphenol); 4,41 - (1,1 - butylidene - bis(3 - methyl - 6 - t - butylphenol a 2,a 6 - bis(3 t - butyl - 5 - methyl - 2 - hydroxyphenyl)-mesitol; 4,41 - thiobis(2 - methyl - 6 - t - butylphenol) and diterpene-diphenols. The polyolefins which may be stabilized are prepared from one or more olefins having 2-8 carbon atoms and preferably have molecular weights of 10,000-1,000,000.ALSO:The invention comprises di-esters of thiodipropionic acid, HOOC-CH2-CH2-S-CH2-CH2-COOH with a cyclic terpene alcohol. The preferred alcohols are derived from abietic acid, e.g. tetrahydro-, dihydro- and dehydro-abietyl alcohols but other suitable alcohols are a -terpiniol, b -terpiniol, g -terpiniol and their hydrogenated derivatives, borneol and menthol. The esters may be made by reacting the alcohol with the acid in the presence of a mineral acid and, if desired, a mixture of alcohols may be used.

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