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8 条记录 (耗时 0.008 秒)

    Preparation of phenolic thioethers
    1.
    发明授权
    Preparation of phenolic thioethers 失效
    酚醛树脂的制备

    公开(公告)号：US3553270A

    公开(公告)日：1971-01-05

    申请号：US3553270D

    申请日：1967-12-22

    申请人： ETHYL CORP

    发明人： WOLLENSAK JOHN C ,  MELTSNER BERNARD R

    IPC分类号： C07C149/36 ,  C08C13/08

    CPC分类号： C07C323/00

    摘要： THE REACTION OF PHENOLS UNSUBSTITUTED IN AT LEAST ONE POSITION ORTHO OR PARATO THE HYDROXYL GROUP WITH FORMALDEHYDE AND MONO- OR DIMERCAPTANS YIELDS, RESPECTIVELY, A-(HYDROCARBYLTHIO)-CRESOLA OR A,A''-ALKYLENE DITHIOBIS COMPOUNDS. FOR EXAMPLE, THE REACTION OF 2,6-DI-TERT-BUTYLPHENOL WITH FORMALDEHYDE AND DODECYL MERCAPTAN YIELDS 2,6-DI-TERT-BUTYL-A-(DODECYLTHIO)-P-CRESOL. THE PRODUCTS ARE USEFUL AS ANTIOXIDANTS.

    Polyalkadienes stabilized with dithio-bis(beta-arylalkylene)diphenols
    6.
    发明授权
    Polyalkadienes stabilized with dithio-bis(beta-arylalkylene)diphenols 失效
    稳定于二硫代双（苯并三唑）二苯酮的聚二醇

    公开(公告)号：US3839279A

    公开(公告)日：1974-10-01

    申请号：US32529273

    申请日：1973-01-22

    申请人： UNIROYAL INC

    发明人： HAGEMAN H

    IPC分类号： C08G61/12 ,  C08K5/00 ,  C08K5/375 ,  C08L21/00 ,  C08C13/08 ,  C08D11/04

    CPC分类号： C08G61/128 ,  C08G61/121 ,  C08K5/375 ,  Y10S524/925 ,  C08L21/00

    摘要： The compunds are of the class dithiobis(betaarylalkylene)diphenols and chain-extended polydithio-polyphenols derived therefrom. They are useful as anti-oxidants in compositions containing unsaturated rubbers - that is, so-called diene rubbers. A typical compound of the class is 4,4''dithiobis(beta-phenylethylene)diphenol, made by the condensation of one mole of bis(beta-chlorophenethyl) disulfide with two moles of phenol. Chain extension is apt to occur by reaction of the first-formed dithio-diphenol with additional amounts of the dichloro coupling agent and the starting phenol, forming poly(dithio) polyphenolic compounds having repeated alternating units of the coupler and phenol moieties.

    摘要翻译： 该化合物是二硫代二（β-芳基亚烷基）二酚类和由其衍生的链延长的多聚二元多酚。 它们可用作含有不饱和橡胶的组合物中的抗氧化剂 - 即所谓的二烯橡胶。 该类的典型化合物是通过一摩尔双（β-氯苯乙基）二硫化物与两摩尔苯酚的缩合制得的4,4'-二硫代双（β-苯基乙烯）二酚。 通过首先形成的二硫代二苯酚与另外量的二氯偶联剂和起始苯酚的反应容易发生链延伸，形成具有重复的偶联剂和苯酚部分的交替单元的聚（二硫）多酚化合物。