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    Divinyltin oxide and method of preparation
    31.
    发明授权
    Divinyltin oxide and method of preparation 失效
    氧化二乙烯基锡及其制备方法

    公开(公告)号：US2867642A

    公开(公告)日：1959-01-06

    申请号：US61066556

    申请日：1956-09-18

    Applicant: METAL & THERMIT CORP

    Inventor： RAMSDEN HUGH E ,  ROSENBERG SANDERS D

    IPC: C07F7/22

    CPC classification number: C07F7/2236

    Abstract: Divinyl tin oxide, a polymeric material composed of units of structure is made by the hydrolysis of divinyl tin chloride or bromide. It will copolymerize with vinyl chloride, styrene, vinyl silanes, methyl methacrylate or acrylates. It may also be used as a stabilizer in polyvinyl chloride compositions, as may epoxyethyl tin oxide, obtained by epoxidizing the unsaturated linkages. The preparation of the polymeric divinyl tin oxides takes place in a basic aqueous solution containing sufficient hydroxyl ions to replace all the halogen atoms with oxygen. Specified bases are Na and K hydroxides, carbonates and bicarbonates, Ca, Ba, NH4 and tetra-alkyl ammonium hydroxides, CaO, aniline, pyridine and morpholine. The divinyl tin halides may be added to the basic aqueous solution as such, or in the form of an organic solution (e.g. in benzine, toluene, xylene, pentane, hexane, heptane, cyclohexane, or an alcohol or ether). Uses.-P.V.C. stabilizers, as above. Anthelmintics for chicken feeds or medicines.ALSO:The invention comprises divinyltin oxide which is prepared by reacting divinyltin chloride or bromide with a basic compound in aqueous solution containing sufficient hydroxyl ions to replace all the halogen atoms by oxygen. Specified bases include sodium and potassium hydroxides, carbonates and bicarbonates, ammonium hydroxide, aniline, pyridine, morpholine, tetra-alkyl-ammonium hydroxides, calcium oxide and hydroxide and barium hydroxide. The divinyltin chloride or bromide may react with the aqueous solution in the pure state, or it may react in solution in an inert hydrocarbon or organic solvent (e.g. benzene, toluene, pentane, hexane, cyclohexane, an alcohol or ether). An inert atmosphere such as nitrogen may be maintained during the reaction if desired. Epoxy ethyl tin oxide may be obtained by epoxidizing the unsaturated linkages in divinyl tin oxide.

    Hydrocarbontinborates
    32.
    发明授权
    Hydrocarbontinborates 失效
    碳氢化合物硼酸盐

    公开(公告)号：US2867641A

    公开(公告)日：1959-01-06

    申请号：US44116554

    申请日：1954-07-02

    Applicant: METAL & THERMIT CORP

    Inventor： RAMSDEN HUGH E

    IPC: C07F7/22 ,  C08K5/57

    CPC classification number: C08K5/57 ,  C07F7/2248 ,  C07F7/2252 ,  C08L27/06 ,  C08L57/08 ,  C08L27/04

    Abstract: Polyvinyl chloride and polyvinylidene chloride compositions with or without plasticizers are stabilized against heat and light by addition of a dihydrocarbon tin borate of formula (R2Sn)3-n(R1)2n(BO3)2 where R and R1 are alkyl, aryl or aralkyl groups (R1 being an alcohol or phenol residue) and n is 0, 1 or 2. Specified stabilizers include dibutyl tin borate and a compound of formula (C4H9)2Sn(C8H17)4 (BO3)2 prepared from dibutyl tin oxide, 2-ethyl hexanol and boric acid. A composition comprising polyvinyl chloride, di-2-ethylhexyl-phthalate and dibutyl tin borate is described.ALSO:The invention comprises dihydrocarbontin borates of formula wherein R-R1 are alkyl, aryl or aralkyl radicals and n is 0, 1 or 2. They may be prepared by reacting a dihydrocarbontin oxide with boric acid or a partial ester of boric acid at a temperature between 80 DEG and 140 DEG C. If desired, the oxide, boric acid and an alcohol or phenol may be reacted together. The reagents should be substantially anhydrous. An inert organic solvent (benzene, toluene, xylene) may be used as reaction medium. In an example, dibutyl tin oxide is dried by refluxing with toluene, boric acid added and the mixture heated. On distillation of the toluene dibutyl tin borate remains. The preparation of a compound (C4H9)2Sn(C8H17)4 (BO3)2 from dibutyl tin oxide, 2-ethyl hexanol and boric acid is also described.ALSO:Dihydrocarbontin borates of formula: (R2Sn)3-n (R1)2n (BO3)2 are used as rubber antioxidants and rubber accelerators. In the formula R and R1 are alkyl, aryl or aralkyl groups (R1 being the residue of an alcohol or phenol) and n is O, 1, or 2. Specified compounds include dibutyltin borate and a compound of formula (C4H9)2Sn (C8H17)4 (BO3)2 derived from dibutyltin oxide, 2-ethylhexanol and boric acid.

    Reaction products of boron hydrides with vinyl containing silicon, aluminum or beryllium compounds
    38.
    发明授权
    Reaction products of boron hydrides with vinyl containing silicon, aluminum or beryllium compounds 失效
    硼氢化物与含乙烯基硅，铝或铍化合物的反应产物

    公开(公告)号：US3072699A

    公开(公告)日：1963-01-08

    申请号：US79629159

    申请日：1959-03-02

    Applicant: METAL & THERMIT CORP

    Inventor： RAMSDEN HUGH E

    IPC: C06B47/10 ,  C07F5/00 ,  C07F5/02 ,  C07F5/06 ,  C07F7/08 ,  C10L1/30

    CPC classification number: C10L1/30 ,  C06B47/10 ,  C07F5/00 ,  C07F5/027 ,  C07F5/062 ,  C07F7/082 ,  C07F7/0896

    Abstract: A liquid propellant, which may be used as such or blended with hydrocarbon fuels for reaction motors or for jet engines, comprises the oily addition product of a boron hydride and a vinyl compound of formula ViaRbBe, VicRdAl or VieRfSi wherein Vi is a vinyl group, R represents hydrogen or a hydrocarbon group and a=1 or 2, b=1 or 0, c=1, 2 or 3, d=2, 1 or 0, e=1, 2, 3 or 4 and f=3, 2, 1 or 0.ALSO:A boron hydride derivative suitable for use as a rocket fuel comprises the monomeric or polymeric addition product of a boron hydride and a vinyl compound of the formula wherein Vi is a vinyl group, R represents hydrogen or a hydrocarbon group (e.g. methyl, ethyl, phenyl, benzyl or octyl) and a = 1 or 2, b = 1 or 0, c = 1, 2 or 3, d = 2, 1 or 0, e = 1, 2, 3 or 4 and F = 3, 2, 1 or 0. The boron hydrides include diborane, tetraborane, pentaboranes (9 and 11), hexaborane and decaborane and mixtures thereof; alkyl boron hydrides may also be used and these may be prepared by allowing a mixture of diborane and a trialkylborane to come into equilibrium. The addition reaction may take place in a solvent such as tetrahydrofuran or a hydrocarbon, e.g. n-pentane. The beryllium, aluminium and silicon compounds used in the examples are usually the di-, tri- or tetravinyl derivatives respectively, but certain compounds are used in which a vinyl group is replaced by a hydrogen atom or methyl group; mixtures of the beryllium, aluminium and silicon compounds may also be used. Polymeric products may be formed when the boron hydrides contain at least two hydrogen atoms which are active in the addition reaction and where the vinyl compounds contain at least two vinyl groups. The use of the tri- and tetravinyl compounds can lead to cross-linked polymers. Polymerization of the monomeric addition products and/or cross-linking of the polymeric products may also take place through vinyl groups in the presence of u.v. light or polymerization catalysts, e.g. benzoyl peroxide. Specifications 795,772, 824,944 and 878,130 are referred to.ALSO:The invention comprises monomeric (or polymeric-see Group IV (a)) addition products of a boron hydride and a vinyl compound of formula ViaRbBe or VicRdAl [The a, b, c and d are subscripts] wherein Vi is a vinyl group, R represents hydrogen or a hydrocarbon group and a=1 or 2, b=1 or 0, c=1, 2 or 3 and d=2, 1 or 0. The boron hydrides mentioned include diborane, tetraborane, pentaboranes (9 and 11) hexaborane and decaborane and mixtures thereof; alkyl boron hydrides may also be used and these may be prepared by allowing a mixture of diborane and a trialkylborane to come in to equilibrum. The addition reaction may take place in a solvent such as tetrahydrofuran or a hydrocarbon, e.g. n-pentane. The beryllium and aluminium compounds used in the examples are usually the di- and tri-vinyl derivatives, respectively, however a vinyl group may be replaced by a hydrogen atom or methyl group; mixtures of the beryllium and aluminium compounds may also be used. Specificatioins 795,772, 824,944 and 878,130 are referred to.

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