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    Production of Propylene Polymers by Copolymerising Propylene with Butadiene.
    22.
    发明专利
    Production of Propylene Polymers by Copolymerising Propylene with Butadiene. 未知

    公开(公告)号：GB1160375A

    公开(公告)日：1969-08-06

    申请号：GB5176266

    申请日：1966-11-18

    Applicant: BASF AG

    Inventor： STEDEFEDER JOACHIM

    IPC: C08F236/06

    Abstract: 1,160,375. Preparing propylene-butadiene copolymers. BADISCHE ANILIN- & SODAFABRIK A.G. 18 Nov., 1966 [19 Nov., 1965], No. 51762/66. Heading C3P. Copolymers of propylene and butadiene are prepared by copolymerizing a mixture of these monomers, optionally containing ethylene, in the presence of catalysts comprising (1) halides of trivalent titanium, (2) alkyl aluminium halides containing 0À25 to 1À5 halogen atoms per aluminium atom and (3) compounds of cobalt with organic carboxylic acids and/or 1,3- dicarbonyl compounds, at temperatures up to 150‹ C. and pressures up to 100 atmospheres gauge. The component (2) may be used as a mixture of aluminium alkyls and halides. The process yields copolymers containing up to 10% of butadiene units. In the example, propylene is initially polymerized using a mixture of a complex of formula 3TiCl 3 .AlCl 3 , diethylaluminium chloride, and cobaltous stearate, and hydrogen as a regulator; butadiene and triethylaluminium are then added and polymerization continued. A composition comprising polypropylene of intrinsic viscosity of 4À0 dl./g. and 3% of 1,4-cis-polybutadiene having an intrinsic viscosity of 1.9 dl./g. (containing 95% of 1,4-units) is also prepared in the example.

    Production of molding materials from polypropylene and polyisobutylene
    23.
    发明专利
    Production of molding materials from polypropylene and polyisobutylene 未知

    公开(公告)号：GB1096346A

    公开(公告)日：1967-12-29

    申请号：GB1693065

    申请日：1965-04-22

    Applicant: BASF AG

    Inventor： STEDEFEDER JOACHIM ,  SCHNELL GEORG

    IPC: C08F210/00

    Abstract: Moulding material consisting of 99.5 to 70% by weight of polypropylene and 0.5 to 3.0% by weight of polyisobutylene, is made by homopolymerizing propylene and isobutylene mixed together in the presence of a catalyst comprising an alkyl aluminium halide and a titanium halide. The molar ratio of halogen to aluminium in the alkyl aluminium supplied to the polymerization being from 1.1: to 1.9:1 and the molar ratio of aluminium to titanium being 10:1 to 1:3. The catalyst may be modified with complex-forming substances, and the polymerizable mix may include polymerization and molecular weight regulators. The polymers are recovered by known techniques.

    Process for the polymerisation of mono-ªá-olefines with three or more carbon atoms
    27.
    发明专利
    Process for the polymerisation of mono-ªá-olefines with three or more carbon atoms 未知

    公开(公告)号：GB921954A

    公开(公告)日：1963-03-27

    申请号：GB3397261

    申请日：1961-09-22

    Applicant: BASF AG

    Inventor： STEDEFEDER JOACHIM ,  LAUTENSCHLAGER HANS

    IPC: C08F4/16 ,  C08F10/00

    Abstract: Polymers of alpha mono-olefines are made by polymerizing the chosen monomer in the presence of a catalyst system comprising (1) at least one compound of at least one metal selected from Group IVb, Vb, VIb, or VIII of the Periodic System, (2) at least one organometallic compound of at least one metal of Group Ia, IIa, IIIa, or IVa of the Periodic System and (3) at least one compound of the general formula AR3, or AR13X2, in which A denotes nitrogen, phosphorus, arsenic, antimony, or bismuth, R denotes hydroxyalkyl, hydroxyaryl, or halogen, R1 denotes hydrogen, alkyl, aryl, aralkyl, cycloalkyl, hydroxyalkyl, hydroxyaryl, or halogen, X (monovalent) denotes halogen, aryl, alkyl, aralkyl, or cycloalkyl, or X2 (divalent) denotes oxygen, sulphur, selenium, tellurium, or =NH, compounds of the type AR3 having three halogen atoms being excluded. The Periodic Table referred to is that published in "The Handbook of Chemistry and Physics" pages 394/5, 38th Edition 1956/7, by The Chemical Rubber Publishing Co. Specified alpha-mono-olefines are propylene, n-butene-1, 3-methylene-butene-1, pentene-1, 4-methylpentene-1, and 5-methylhexene-1. Component (1) of the catalyst may be titanium trichloride, vanadium trichloride, vanadyl chloride, chromic chloride, chromium oxide, chromyl chloride, or titanium acetylacetonate. Component (2) may be lithium butyl, beryllium diethyl magnesium diethyl, aluminium triethyl, aluminium trimethyl, lead tetraethyl, tin tetraethyl, aluminium diethoxymonoethyl, or aluminium diethyl chloride. Component (3) maybe triethyl or tri-n-butyl phosphate, triphenyl phosphine oxide, triphenyl phosphine imine, phosphorus oxychloride, phenylphosphorus dichloride, N,N-dimethylaniline oxide, pyridine-N-oxide, trimethylamine-N-oxide, triethylamine-N-oxide, triethyl arsenite, trimethyl arsenic oxide, triethyl arsenate, trimethyl-arsenic sulphide, trimethyl-arsenic dichloride, triethyl antimonite, antimony oxychloride, pentaphenyl antimony, triphenyl-antimony dichloride, trimethylantimony oxide, triphenyl-antimony oxide, trimethyl antimony dichloride, triphenyl-antimony dichloride, phenyl-antimony tetrachloride, triethyl-antimony sulphide, pentaphenyl bismuth, triphenyl-bismuth difluoride, triphenyl-bismuth dibromide, or triphenyl-bismuth dichloride. The catalyst is preferably preformed in a grinding mill, in the presence of a solvent, and the catalyst "aged" by heat-treatment. The polymerization is effected in the presence of conventional solvents and diluents.

    PREPARATION OF POLYMER POWDERS
    29.
    发明专利
    PREPARATION OF POLYMER POWDERS 未知

    公开(公告)号：CA1194648A

    公开(公告)日：1985-10-01

    申请号：CA362436

    申请日：1980-10-15

    Applicant: BASF AG

    Inventor： MESSMER KARLHEINZ ,  STEDEFEDER JOACHIM ,  FISCHER HERMANN ,  HARTMANN HEINRICH

    IPC: C08F2/00 ,  C08F2/06 ,  C08F2/14 ,  C08F2/34

    Abstract: PREPARATION OF POLYMER POWDERS of the disclosure: Polymer powders are prepared from polymerizable monoethylenically unsaturated compounds, which boll at above +5.degree.C under atmospheric pressure, by polymerizing the monomer, in the form of a 5 - 50% strength solution or emulsion in an inert organic solvent which is a precipitant for the polymer, in a powder bed in the presence of a conventional polymerization initiator, whilst maintaining the reaction mixture in the form of a powder and causing it to circulate, the organic solvent being removed, as vapor, from the polymerization zone during the polymerization.

    MANUFACTURE OF PAPER HAVING A HIGH DRY STRENGTH AND A LOW WET STRENGTH
    30.
    发明专利
    MANUFACTURE OF PAPER HAVING A HIGH DRY STRENGTH AND A LOW WET STRENGTH 未知

    公开(公告)号：CA1140819A

    公开(公告)日：1983-02-08

    申请号：CA342176

    申请日：1979-12-18

    Applicant: BASF AG

    Inventor： HARTMANN JUERGEN ,  STEDEFEDER JOACHIM ,  DENZINGER WALTER ,  PFOHL SIGBERG

    IPC: D21H19/20 ,  D21H17/43 ,  D21H1/34 ,  B32B27/10 ,  C09D3/80

    Abstract: A process for the manufacture of paper having a high dry strength and a low wet strength, by treating the surface of the paper with an aqueous solution of an alkaline earth metal salt of, or a mixture of an alkaline earth metal salt and an alkali metal salt of a polymer of (a) from 91 to 100% by weight of acrylic acid and/or methacrylic acid and (b) from 0 to 9% by weight of acrylonitrile, methacrylonitrile, acrylamide, methacrylamide, vinyl acetate, maleic anhydride, diisobutylene, an ester of acrylic acid and/or an ester of methacrylic acid, which has a viscosity of from 5 to 100 mPas in 2% strength aqueous solution at 20.degree.C, and drying the impregnated paper. The polymer is generally employed in an amount of from 1 to 4% by weight, based on dry paper, and increases the dry strength of the paper without substantially increasing the wet strength.

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