中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

22 records (took 0.017 seconds)

    12.
    发明专利
    未知

    公开(公告)号：FI40233B

    公开(公告)日：1968-07-31

    申请号：FI192962

    申请日：1962-10-25

    Applicant: HOECHST AG

    Inventor： GUTWEILER K ,  FISCHER E ,  KUELLMAR K ,  BIER G

    IPC: C08G2/00 ,  C08G2/38 ,  C08G4/00 ,  C08G13/00

    Abstract: A trioxane graft polymer is prepared by polymerizing trioxane in the presence of a Lewis acid and at least one primary polymer selected from the group consisting of polyethers, polyether acetals and polyacetals. The polymerization may be effected by adding the trioxane to a mixture of a polymer and Lewis acid, or by adding the acid to a mixture of trioxane and polymer or by mixing the trioxane and polymer, cooling this mixture to below its melting-point contacting with boron trifluoride gas and polymerizing at above the melting-point of trioxane. The Lewis acid may be BF3, BCl3, AlCl3, FeCl3, SbCl3, SbCl5, ZnCl2, SnCl4, TiCl4, the reaction product of borontrifluoride with dimethyl ether, methylethylether, diethyl-ether, di-isoamyl ether, tetrahydrofuran or tetrahydropyrene, an oxon-ium salt of boron trifluoride, a substituted diazonium salt containing the BF4-, ClO4- or PF6-anion which is either light active or thermoactive. Many catalysts are listed. Specifications 886,982 and 919,499 are referred to.

    15.
    发明专利
    未知

    公开(公告)号：SE349053B

    公开(公告)日：1972-09-18

    申请号：SE462868

    申请日：1968-04-05

    Applicant: HOECHST AG

    Inventor： GUTWEILER K

    IPC: C08K5/00 ,  C08G37/02 ,  C08G51/54

    Abstract: 1,182,727. Oxymethylene polymer compositions. FARBWERKE HOECHST A.G. 8 April, 1968 [8 April, 1967], No. 16733/68. Heading C3P. A composition comprises (1) an oxymethylene polymer; (2) a phenol antioxidant, suitably a mono-, bis-, polyphenol (which may be substituted) or a phenol-formaldehyde resin; (3) an alkaline earth metal oxide, hydroxide, or salt of an organic acid; and (4) a tertiary amine. A pigment dyestuff may also be incorporated. The components are present in amounts of (2) 0 1 to 5 %, (3) 0.01 to 5%,and(4)5 to 1000 p.p.m. based on the polymer. In the examples a trioxan (98%) -ethylene oxide (2%) copolymer is mixed with (2) a commercial polyphenol, and 2,2 1 - methylene - bis (4 - methyl - 6 - t - butyl phenol); (3) Ba, Ca, and Sr cinnamates, Ca adipate, Ca stearate, Ca acrylate, Ca undecylenate, Ca benzoate, and calcium hydroxide; and (4) tributylamine, triethylene diamine and triethylamine 2HF.

    16.
    发明专利
    未知

    公开(公告)号：FI43122B

    公开(公告)日：1970-10-01

    申请号：FI88664

    申请日：1964-04-24

    Applicant: HOECHST AG

    Inventor： GUTWEILER K ,  FISCHER E ,  KUELLMAR K

    IPC: C08G2/00 ,  C08G2/18 ,  C08G2/38 ,  C08G1/12

    Abstract: A solution or dispersion obtained by heating, in trioxane, a polyformal of formula -([-O-A-(OCH2)m-])n-where A is a straight-chained or branched saturated or olefinically unsaturated aliphatic hydrocarbon radical containing at least two carbon atoms and which may contain a halogen-substituted aliphatic side chain, or a cycloaliphatic radical or an aralkyl radical, m is a whole number from 1 to 20 and n is a whole number, is polymerized by cooling once or several times to a temperature at least that of the phase transition from the liquid to the solid phase. The polyformal may have been obtained by homopolymerization of a cyclic formal or copolymerization of a cyclic formal or cyclic ether with trioxane, in the presence of a cationic catalyst, and the copolymerization reaction may be used to produce the solution or dispersion of polyformal in trioxan which is then subjected to the further polymerization. Alternatively the polyformal may be obtained by polycondensation of a dihydric alcohol or a dihydric ol-thiol compound with formaldehyde. Specified catalysts are boron fluoride, its complexes, substituted diazonium salts, other Lewis acids e.g. tin tetrachloride and trimethyl oxonium tetrachloroferriate.

    17.
    发明专利
    未知

    公开(公告)号：SE312441B

    公开(公告)日：1969-07-14

    申请号：SE1146862

    申请日：1962-10-25

    Applicant: HOECHST AG

    Inventor： GUTWEILER K ,  FISCHER E ,  KUELLMAR K ,  BIER G

    IPC: C08G2/00 ,  C08G2/38 ,  C08G4/00 ,  C08G1/16

    Abstract: A trioxane graft polymer is prepared by polymerizing trioxane in the presence of a Lewis acid and at least one primary polymer selected from the group consisting of polyethers, polyether acetals and polyacetals. The polymerization may be effected by adding the trioxane to a mixture of a polymer and Lewis acid, or by adding the acid to a mixture of trioxane and polymer or by mixing the trioxane and polymer, cooling this mixture to below its melting-point contacting with boron trifluoride gas and polymerizing at above the melting-point of trioxane. The Lewis acid may be BF3, BCl3, AlCl3, FeCl3, SbCl3, SbCl5, ZnCl2, SnCl4, TiCl4, the reaction product of borontrifluoride with dimethyl ether, methylethylether, diethyl-ether, di-isoamyl ether, tetrahydrofuran or tetrahydropyrene, an oxon-ium salt of boron trifluoride, a substituted diazonium salt containing the BF4-, ClO4- or PF6-anion which is either light active or thermoactive. Many catalysts are listed. Specifications 886,982 and 919,499 are referred to.

    18.
    发明专利
    未知

    公开(公告)号：BR7900393A

    公开(公告)日：1979-08-21

    申请号：BR7900393

    申请日：1979-01-22

    Applicant: HOECHST AG

    Inventor： GUTWEILER K

    IPC: C08F4/00 ,  B01J31/02 ,  B01J37/00 ,  C08F4/60 ,  C08F4/62 ,  C08F4/64 ,  C08F10/00 ,  C08F10/02 ,  C08F2/00

    Abstract: A catalyst for the polymerization of 1-olefins is prepared by successively applying a chromate ester and a titanium ester to a carrier containing silicon dioxide, in the absence of an unsaturated polymerizable hydrocarbon, and activating with an aluminum-organic compound. In the manufacture of the catalyst no washing liquids are obtained from which metal compounds would have to be separated. In the presence of hydrogen the catalyst gives a high yield of polymers with broad molecular weight distribution and a small content of high molecular constituents. The films made therefrom are practically free from specks.

Patent Agency Ranking