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    MANUFACTURE OF FIBRIDS OF POLYOLEFINS
    12.
    发明专利
    MANUFACTURE OF FIBRIDS OF POLYOLEFINS 未知

    公开(公告)号：CA1069264A

    公开(公告)日：1980-01-08

    申请号：CA215799

    申请日：1974-12-11

    Applicant: BASF AG

    Inventor： SANDER BRUNO ,  BONITZ ECKHARD ,  SCHERLING KURT

    IPC: D01F6/04 ,  C08L23/02 ,  D01D5/11 ,  D21H13/14 ,  D01F1/10

    Abstract: Discrete fibrids of polyethylene having lengths of 1 to 50 mm and thicknesses between 2 and 30 .mu.m, are produced by (a) dissolving in a pressure vessel polyethylene, obtained by lowpressure polymerization of ethylene, in a solvent which is a mixture of pentanes and a naphtha cut boiling at 25 to 140.degree.C. and containing pentanes in an amount of from 5 to 50% by weight, the pentanes being selected from the group consisting of n-pentane, isopentane, cyclopentane and neopentane; (b) maintaining the vapor pressure in the pressure vessel at 4 to 60 atmospheres and maintaining the temperature of the polyethylene solution in the pressure vessel at temperature of 80 to 250.degree.C and above the boiling point of the solvent at standard pressure; (c) passing the polyethylene solution from the pressure vessel through an orifice into a space maintained at lower temperature and pressure than those in the pressure vessel; (d) flashing off the solvent in the space from the solution passed through the orifice to produce a tangled mass of polyethylene fibrids, the amount of pentanes in the solvent further being sufficient to cause the polyethylene to separate in form of discrete fibrids upon the flashing off of the solvent in the space; and (e) drying the resultant polyethylene fibrids. The fibrids directly obtained may be used, for example, for the manufacture of paper or for the manufacture of textile-like webs.

    Production of organosilanes
    13.
    发明专利
    Production of organosilanes 未知

    公开(公告)号：GB1110957A

    公开(公告)日：1968-04-24

    申请号：GB3686165

    申请日：1965-08-27

    Applicant: BASF AG

    Inventor： BONITZ ECKHARD

    IPC: C07F7/04 ,  C07F7/18 ,  C08G77/06 ,  C08G77/20

    Abstract: Organosilanes are prepared by reacting finely divided Si in a liquid medium with a substituted or unsubstituted alcohol or phenol, and reacting the silane formed with an organic unsaturated compound. The Si used may be any commercial grade of 80-99% purity and containing no additional catalysts. By "finely divided" is meant a particle size of 100-0.1 micron. The first reaction stage is preferably conducted in a liquid organic diluent or Si compound, the product silane being recovered prior to reaction with the unsaturated compound. The silanes may be monomers or polymers and in the latter case cyclic or acyclic. The reaction in the first step may be conducted at atmospheric or above pressure, and usually at below 250 DEG C. The reaction of the silane with the unsaturated compound is effected under conventional catalytic conditions. The products may be hydrolysed with water to yield silanols, and polysiloxanes.

    Production of silanes
    14.
    发明专利
    Production of silanes 未知

    公开(公告)号：GB1094255A

    公开(公告)日：1967-12-06

    申请号：GB1286065

    申请日：1965-03-26

    Applicant: BASF AG

    Inventor： BONITZ ECKHARD

    IPC: C07F7/02 ,  C07F7/04

    Abstract: Silanes are prepared by reacting at 220 DEG C. or less, finely-divided silicon in the liquid phase with an alcohol or phenol in the absence of alkaline catalysts, if necessary in the presence of a liquid organic diluent or a liquid Si-compound. By "silanes" is meant compounds containing at least one Si-H bond; by "finely-divided" is meant Si of 80-99% purity and of particle size 100-0.1 m . Preferably oxygen is excluded from the reaction mixture, e.g. by nitrogen. Soluble (in the reaction medium) Cu and Zn salts may be added as accelerators. The products are mono- or polymeric, e.g. up to 30 recurring units and may also be cyclic.ALSO:Monosilane is a by-product in the reaction of finely-divided Si in the liquid phase with an alcohol or phenol at 220 DEG C. or less in the absence of alkaline catalysts, and if necessary in the presence of a liquid organic diluent or liquid Si compound. The main products, e.g. of the type SiH2(OR)2, where R is substituted or unsubstituted alkyl or aryl, disproportionate to monosilane and Si(OR)4.

    Mixtures containing Stabilized Silanes
    16.
    发明专利
    Mixtures containing Stabilized Silanes 未知

    公开(公告)号：GB1151189A

    公开(公告)日：1969-05-07

    申请号：GB3766066

    申请日：1966-08-23

    Applicant: BASF AG

    Inventor： TRIESCHMANN HANS-GEORG ,  BONITZ ECKHARD

    IPC: C07F7/20

    Abstract: 1,151,189. Stabilizing alkoxy- and phenoxysilanes. BADISCHE ANILIN- & SODAFABRIK A.G. 23 Aug., 1966 [24 Aug., 1965], No. 37660/66. Headings C3S and C3T. Alkoxy- and phenoxymono-, di- and polysilanes which may be substituted by alkyl groups and which contain -Si-H or -Si-Sibonds are stabilized by mixing, with the silane, a liquid or gaseous acid substance. The acid substance is preferably incorporated in 0À01 to 10% amounts by weight of the total mixture. The silanes are generally obtained by the action of alcohols and phenols on finely divided silicon; examples of monosilanes H a Si(OR) 4-a wherein a is 1, 2 or 3 and R is an alkyl or phenyl group, include HSi(OCH 3 ) 3 , (Ph-O) 3 SiH; di-silanes of the general formula H a Si(OR) 3-a Si(OR) 3-b H b are exemplified by HSi(OCH 3 ) 2 -Si(OCH 3 ) 2 - H(CH 3 O) 3 Si-Si(OCH 3 ) 3 (a, b are each 0, 1, 2 or 3); polysilanes may have the general formula H-[HSiOR] n -OR where n is an integer from 3 to about 30. The acid substances used as stabilizers include hydrogen halides, halosilanes, urea hydrochloride, acetyl chloride, hemiesters of sulphuric acid, sulphur halides, phosphorus halides, aluminium halides, boron halides, and potassium hydrogen sulphate, all in liquid or gaseous form.

    Magnetic recording media
    17.
    发明专利
    Magnetic recording media 未知

    公开(公告)号：GB1147518A

    公开(公告)日：1969-04-02

    申请号：GB3186766

    申请日：1966-07-15

    Applicant: BASF AG

    Inventor： SCHNELL GEORG ,  HARTMANN JOB-WERNER ,  BONITZ ECKHARD

    IPC: C09D5/23 ,  G11B5/702 ,  G11B5/725

    Abstract: 1147518 Magnetic compositions BADISCHE ANILIN- & SODA-FABRIK A G 15 July 1966 [17 July 1965] 31867/66 Index C3R 3 R22 R32 L4H C24 C13X C10 C11 C12 C25 C6X C5B2 C8P L5A L6G L4D C14A C16 L5X A magnetic recording medium comprises a flexible non-magnetic support with a coating thereon containing magnetic particles dispersed in a thermoplastic resinous binder togehter with 0À5-26% (b. w. of the particles) of a compound of formula R n SiX 4-n , where n is 1-3, R is a saturated or unsaturated aliphatic or aromatic hydrocarbon radical, and X is a halogen atom, or alkoxy, hydroxyl, or amine radical. Numerous examples are given where R is Me, Et, Pr, Bu, Ph, naphthyl, vinyl, dodecyl, octadecyl, octyl and mixtures thereof, and X is C1, (OBu), (OEt), (OH) and (NH 2 ). The compound may be added before, during, or after dispersion of the particles. The binder may be P.V.C., cellulose ester, polyurethane, polyamide, or polyester (examples given). The magnetic particles may be acicular γ-Fe 2 O 3 , and a layer 10Á thick may be produced, containing 0À5-5% of the particles.

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