Alkylation process
    14.
    发明授权
    Alkylation process 失效
    烷基化方法

    公开(公告)号:US3919333A

    公开(公告)日:1975-11-11

    申请号:US45041874

    申请日:1974-03-12

    Applicant: ETHYL CORP

    Inventor: WOLLENSAK JOHN C

    Abstract: Phenols are alkylated by reaction with primary or secondary alkanols containing two or more carbon atoms in the presence of alkali metal hydroxides at elevated temperatures.

    Abstract translation: 在碱金属氢氧化物存在下,在升高的温度下,通过与含有两个或更多个碳原子的伯或仲链烷醇反应来使苯酚烷基化。

    Preparation of phenolic thioethers
    16.
    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

    Applicant: ETHYL CORP

    CPC classification number: C07C323/00

    Abstract: 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.

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