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    Organo-silicone block copolymers
    15.
    发明授权
    Organo-silicone block copolymers 失效
    有机硅嵌段共聚物

    公开(公告)号：US3480583A

    公开(公告)日：1969-11-25

    申请号：US3480583D

    申请日：1961-12-28

    Applicant: UNION CARBIDE CORP

    Inventor： BAILEY DONALD L ,  O'CONNOR FRANCIS M

    IPC: C07F7/08 ,  C08G77/00 ,  C08G77/46 ,  C08G31/18

    CPC classification number: C07F7/0885 ,  C08G77/00 ,  C08G77/46 ,  C10M3/00 ,  C10M2201/02 ,  C10M2203/02 ,  C10M2203/022 ,  C10M2203/024 ,  C10M2203/04 ,  C10M2207/022 ,  C10M2209/103 ,  C10M2209/108 ,  C10M2227/00 ,  C10M2229/02 ,  C10M2229/04 ,  C10M2229/041 ,  C10M2229/042 ,  C10M2229/043 ,  C10M2229/044 ,  C10M2229/045 ,  C10M2229/046 ,  C10M2229/047 ,  C10M2229/048 ,  C10M2229/05 ,  C10N2240/08 ,  C10N2240/62 ,  Y10S516/01

    Abstract: 880,022. Organosilicon block copolymers. UNION CARBIDE CORPORATION. May 22, 1958 [May 23, 1957], No. 16415/58. Addition to 802,688. Class 2(7) A mixture of linear block copolymers having the general formula in which R 1 is hydrogen when attached to (C n H 2 nO) blocks and alkyl when attached to siloxane blocks, each R is an alkyl, alkenyl, aryl, alkaryl or aralkyl radical, x is an integer of at least 2, y is an integer of at least 5, n is 2, 3 or 4, and a and b are integers of at least 1, may be made (1) by heating a dialkoxydihydrocarbonyl siloxane and a linear polyoxyalkylene compound containing 2 reactive OH groups and at least 5 oxyalkylene units, and removing from the reaction mixture the alkanol corresponding to the alkoxy groups, (2) by condensing the diol with a dialkoxydihydrocarbonylsilane and equilibrating the product with a cyclic dihydrocarbonyl siloxane, or (3) by reacting the diol with a dihydrocarbonysiloxane containing terminal Sibonded H atoms in the presence of an alkaline catalyst, e.g. piperidine. Reaction (1), which can be conducted in the presence of a solvent, e.g. toluene or xylene, is preferably effected at 80‹ to 200‹C. in the presence of a catalyst, e.g. trifluoroacetic, perfluorobutyric, perfluoroglutaric, acetic or monochloroacetic acid or potassium silanolate. After the reaction the catalyst is removed or neutralized, e.g. in the case of an acid catalyst, by adding an equivalent of a weak base, e.g. mono- or di-ethanolamine, monoisopropanolamine, dibutylamine, NaHCO 3 or anhydrous NH 3 . The linear alkoxy-terminated siloxanes may be made by reacting a dihydrocarbonyl cyclic siloxane tri-or tetra-mer with a dialkoxysilane, and the diols can be made by reacting alkylene oxides and a diol starter, as described in Specification 651,712 and U.S.A. Specification 1,921,378. Examples are given. Uses. The water-soluble block copolymers are useful as lubricants in moulding rubber and in combination with diols as lubricants and hydraulic fluids.

    Siloxane wetting agents
    16.
    发明授权
    Siloxane wetting agents 失效
    硅氧烷润湿剂

    公开(公告)号：US3299112A

    公开(公告)日：1967-01-17

    申请号：US37654964

    申请日：1964-06-19

    Applicant: UNION CARBIDE CORP

    Inventor： BAILEY DONALD L

    IPC: B01F17/54 ,  C07F7/08 ,  C07F7/21 ,  C08G77/46

    CPC classification number: B01F17/0071 ,  C07F7/0852 ,  C07F7/0879 ,  C07F7/21 ,  C08G77/46 ,  Y10S516/02

    Abstract: The invention comprises wetting agents which are siloxanes composed of only (a) one group of formula and (b) from 1 to 4 groups of formula where a is 0 to 2, b is 2 or 3, R is methyl or ethyl, R1 is an alkyl group of 1 to 4 carbon atoms, m is 3 or 4, n is 3.8 to 17, p is 0 to 5, the ratio of n to p is at least 2 to 1, (n+p) is 4 to 17, and the polyethyleneoxy group is attached to the silicon atom by at least 3 carbon atoms of CmH2m. Mixtures of up to 2 parts by weight of the siloxane with 100 parts of water and emulsions of from 10 to 50 parts of the siloxane and from 0.1 to 5 parts of a silicone oil of formula R311SiO(R112SiO)xSiR311 with 100 parts of water are formed, where R11 is a hydrocarbyl group and x is 10 to 1000. R11 is typically an alkenyl, cycloalkenyl, alkyl, aryl, aralkyl, alkaryl, or cycloalkyl group. The siloxanes are prepared by the reaction of a hydrosiloxane (containing Si-H) and an alkenyl ether of an alkoxy and hydroxy end-blocked poly(ethylene oxide) at 85 DEG C. to 110 DEG C., in the presence of a platinum catalyst and a solvent. In Example I the siloxane (Me3SiO)2Si(Me)C3H6 (OC2H4)7.2OMe is prepared. In Example XII, various pairs of reactants to produce the siloxanes are given. Comparisons are made with siloxanes containing up to 37 of the above (a) groups and having n less than 4. Uses.-Additives for aqueous paints, adhesive compositions, printing inks, dyeing baths, and mould release compositions to improve their wetting properties. Reference has been directed by the Comptroller to Specification 802,467.

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