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    Process for the production of polyether-thioethers
    7.
    发明授权
    Process for the production of polyether-thioethers 失效
    聚醚硫醚生产工艺

    公开(公告)号：US3335189A

    公开(公告)日：1967-08-08

    申请号：US36293264

    申请日：1964-04-27

    Applicant: BAYER AG

    Inventor： EBERHART DEGENER ,  HANS-GEORG SCHMELZER ,  HANS HOLTSCHMIDT

    IPC: C08G65/34 ,  C08G75/12 ,  C08K5/372

    CPC classification number: C08K5/372 ,  C07C323/00 ,  C08G65/34 ,  C08G75/12

    Abstract: Polyether-thioethers of the general formula: R1-O-(CHR2-CHR3-O) m-(CHR4-CHR5-S-CHR6-CHR7-O) n-(CHR8-CHR9-O)p-R10 wherein R1 and R10 stand for linear or branched alkyl radicals containing 1 to 22, preferably 3 to 18, carbon atoms, R2, R3, R4, R5, R6, R7, R8 and R9 denote hydrogen atoms and/or identical or different linear or branched alkyl radicals containing 1 to 12 carbon atoms, and m, n and p are whole numbers from 1 to 10, preferably 1 to 5, are prepared by reaction between a compound of the general formula: R1-O-(CHR2-CHR3-O)m-H (I), a compound of the general formula: R10-O-(CHR9-CHR8-O)p-H (II), and a bis-(hydroxyalkyl) sulphide of the general formula: HO-CHR4-CHR5-S-CHR6-CHR7-OH in the presence of an acid or of a compound which forms an acid under the reaction conditions. The compounds of general formula (I) and (II) and the dihydroxy-alkyl sulphide are preferably used in a molecular ratio of from 5:1 to 2:5. Numerous suitable starting materials and acids or acid-forming compounds are specified. The compounds of formulae (I) and (II) may be prepared by reacting aliphatic monohydric alcohols simultaneously or in any order with ethylene- and propylene oxides. Examples are given. The compounds may be used as lubricants.ALSO:Polyether-thioethers of the general formula R1 - O - (CHR2 - CHR3 - O)m - (CHR4 - CHR5 - S - CHR6 - CHR7 - O)n - (CHR8 -CHR9-O)p-R10 where R1 and R10 denote linear or branched alkyl radicals containing 1-22 carbon atoms, R2, R3, R4, R5, R6, R7, R8 and R9 denote hydrogen atoms and/or identical or different linear or branched alkyl radicals containing 1-12 carbon atoms, and m, n and p are whole numbers from 1 to 10 may be used as lubricants, hydraulic fluids and in metal working and may contain lubricant additives such as those based on phenols or aromatic amines. Aqueous emulsions of the oil produced in Example 4 are stated to be useful for metal cutting or drilling.

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