1.
    发明专利
    未知

    公开(公告)号:DE2137941A1

    公开(公告)日:1973-02-08

    申请号:DE2137941

    申请日:1971-07-29

    Applicant: BASF AG

    Abstract: 1389862 Emulsions of silicon compounds BADISCHE ANILIN-& SODA-FABRIK AG 28 July 1972 [29 July 1971] 35329/72 Heading B1V [Also in Divisions C3 and Dl] Stable aqueous emulsions of organic silicon compounds are prepared by mechanically emulsifying a mixture of 2-70 wt% of an organic silicon compound with 98-30 wt% of water, in the presence of 0.1-2 wt% (based on the mixture) of a copolymer derived from 5-50 mole% of maleic anhydride, 50-95 mole % of a non-saponifiable monomer and optionally 0.5-7 mol% of a polyamine, and optionally adjusting the pH to at least 7.5. There may also be present conventional emulsifying agents, e.g. polyoxyalkylated alkylphenols and a hydrocarbon solvent for the copolymer. In Examples a trimethylsilyl-terminated polydimethylsiloxane of 5000 cS/25‹C or tetrastearyl or tetraoleyl silicate is emulsified with water in the presence of copolymers of maleic anhydride and vinyl isobutyl ether, in 50:50, 30:88 and 25:71 molar ratio, neutralized with 0, 2 or 5 molar % of hexamethylene diamine, the emulsion also optionally containing a polyoxyethylated castor oil or nonylphenol or a methylated trimethylolmelamine, and being adjusted in pH with aqueous ammonia or triethanolamine.

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