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    14.
    发明专利
    未知

    公开(公告)号：FR1472788A

    公开(公告)日：1967-03-10

    申请号：FR55658

    申请日：1966-03-30

    Applicant: BASF AG

    Inventor： BURGER HEINZ ,  DAUMILLER GUENTHER ,  WILLERSINN HERBERT ,  GROHMANN JOHANNES

    IPC: C08K5/01

    Abstract: 1,132,868. Self-extinguishing styrene polymer compositions. BADISCHE ANILIN- & SODAFABRIK A.G. 22 March, 1966 [1 April, 1965 (2)], No. 12484/66. Headings C3C, C3G and C3P. A self-extinguishing composition which may be used to produce porous mouldings comprises a styrene polymer, an organic brominated compound and 0À01-5% of 2,3-dimethyl-2,3- diphenylbutane. The polymer may be polystyrene, a copolymer containing at least 50% of styrene and acrylonitrile, or may be prepared by polymerizing styrene in the presence of polybutadiene. The bromine compound may contain at least 4 carbon atoms and more than 40% of bromine, e.g. hexabromocyclododecane or 2,3-tris-(dibromopropyl)-phosphate and the composition may contain at least 0À1% of bromine. In an example, a styrene polymer, an organic bromine compound and 2,3-dimethyl- 2,3-diphenylbutane was dissolved in methylene chloride, pentane was added, the solution was poured on to a glass sheet, the methylene chloride was allowed to evaporate and the sheeting obtained was expanded in steam.

    Stabilized polymerizable ethylenically unsaturated monomers
    15.
    发明专利
    Stabilized polymerizable ethylenically unsaturated monomers 未知

    公开(公告)号：GB908214A

    公开(公告)日：1962-10-17

    申请号：GB3858960

    申请日：1960-11-10

    Applicant: BASF AG

    Inventor： POHLEMANN HEINZ ,  BURGER HEINZ ,  LEICHTLE OTTO

    IPC: C07D271/10 ,  C07D271/113 ,  C08F2/38

    Abstract: Ethylenically unsaturated polymerizable monomers are stabilized against unwanted polymerization by the addition of from about 0.0001% to 2% by weight of a substituted oxadiazole of the general formula or or a mixture of such oxadiazoles, wherein each of x1 to x5 represents a halogen atom or one of the radicals -N(R)2, -OR or -R, and R represents a hydrogen atom or an alkyl, cycloalkyl, aralkyl or aryl radical or an aryl radical which is substituted by nitro groups, or in which the substituents x2 and x3 together represent a methylenedioxy group. Specified monomers which are stabilized are vinyl chloride, vinylidene chloride, 2-chloro-buta-1,3-diene, styrene, a -methyl styrene, vinyl toluenes, vinyl pyridines, vinyl imidazoles, vinyl pyrrolidone, vinyl carbazole, acrylic and methacrylic acids and their esters with linear, branched and cycloaliphatic alcohols containing 1-20 carbon atoms, acrylamide, methacrylamide, acrylonitrile, vinyl esters of carboxylic acids containing 2-20 carbon atoms, divinyl ether, tert-butyl vinyl ether, methyl vinyl ketone, tert-butyl vinyl ketone, and vinyl sulphonic and vinyl phosphonic acids and their salts. The monomers may be diluted with solvents such as cyclohexane, octane, benzene and toluene. Numerous examples of suitable oxadiazoles are given. Examples are given of the stabilization of monomers. Example (3) describes polymerization of the monomers.

    16.
    发明专利
    未知

    公开(公告)号：FR1288053A

    公开(公告)日：1962-03-24

    申请号：FR843886

    申请日：1960-11-12

    Applicant: BASF AG

    Inventor： POHLEMANN HEINZ ,  BURGER HEINZ ,  LEICHTLE OTTO

    IPC: C07D271/10 ,  C07D271/113 ,  C08F2/38

    Abstract: Ethylenically unsaturated polymerizable monomers are stabilized against unwanted polymerization by the addition of from about 0.0001% to 2% by weight of a substituted oxadiazole of the general formula or or a mixture of such oxadiazoles, wherein each of x1 to x5 represents a halogen atom or one of the radicals -N(R)2, -OR or -R, and R represents a hydrogen atom or an alkyl, cycloalkyl, aralkyl or aryl radical or an aryl radical which is substituted by nitro groups, or in which the substituents x2 and x3 together represent a methylenedioxy group. Specified monomers which are stabilized are vinyl chloride, vinylidene chloride, 2-chloro-buta-1,3-diene, styrene, a -methyl styrene, vinyl toluenes, vinyl pyridines, vinyl imidazoles, vinyl pyrrolidone, vinyl carbazole, acrylic and methacrylic acids and their esters with linear, branched and cycloaliphatic alcohols containing 1-20 carbon atoms, acrylamide, methacrylamide, acrylonitrile, vinyl esters of carboxylic acids containing 2-20 carbon atoms, divinyl ether, tert-butyl vinyl ether, methyl vinyl ketone, tert-butyl vinyl ketone, and vinyl sulphonic and vinyl phosphonic acids and their salts. The monomers may be diluted with solvents such as cyclohexane, octane, benzene and toluene. Numerous examples of suitable oxadiazoles are given. Examples are given of the stabilization of monomers. Example (3) describes polymerization of the monomers.

    Self-extinguishing plastics molding materials
    17.
    发明专利
    Self-extinguishing plastics molding materials 未知

    公开(公告)号：GB1132868A

    公开(公告)日：1968-11-06

    申请号：GB1248466

    申请日：1966-03-22

    Applicant: BASF AG

    Inventor： WEBER HEINZ ,  BURGER HEINZ ,  DAUMILLER GEUNTHER ,  WILLERSINN HERBERT ,  GROHMANN JOHANNES

    IPC: C08K5/01

    Abstract: 1,132,868. Self-extinguishing styrene polymer compositions. BADISCHE ANILIN- & SODAFABRIK A.G. 22 March, 1966 [1 April, 1965 (2)], No. 12484/66. Headings C3C, C3G and C3P. A self-extinguishing composition which may be used to produce porous mouldings comprises a styrene polymer, an organic brominated compound and 0À01-5% of 2,3-dimethyl-2,3- diphenylbutane. The polymer may be polystyrene, a copolymer containing at least 50% of styrene and acrylonitrile, or may be prepared by polymerizing styrene in the presence of polybutadiene. The bromine compound may contain at least 4 carbon atoms and more than 40% of bromine, e.g. hexabromocyclododecane or 2,3-tris-(dibromopropyl)-phosphate and the composition may contain at least 0À1% of bromine. In an example, a styrene polymer, an organic bromine compound and 2,3-dimethyl- 2,3-diphenylbutane was dissolved in methylene chloride, pentane was added, the solution was poured on to a glass sheet, the methylene chloride was allowed to evaporate and the sheeting obtained was expanded in steam.

    19.
    发明专利
    未知

    公开(公告)号：FR1513291A

    公开(公告)日：1968-02-16

    申请号：FR73831

    申请日：1966-08-23

    Applicant: BASF AG

    Inventor： BURGER HEINZ ,  MOHR HEINRICH ,  PRIEBE EDMUND ,  REUTER LOTHAR ,  WEBER HEINZ

    IPC: C08K5/00 ,  C08K5/01

    Abstract: A self-extinguishing composition consists of (a) a normally solid thermoplastic homopolymer or copolymer of styrene which may be substituted by alkyl groups in the nucleus or side chain and which contains more than 50% by wt. of styrene or the substituted styrene having intimately incorporated therewith (b) an organic bromide having a plurality of bromine atoms attached to the carbon atoms and the bromine atoms constituting more than 40% of the bromide, in such an amount that the composition has a bromine content of 0.1-5%, and (c) 0.01-5% of (a) of a compound of formula where RA and RB are a phenyl radical which may be substituted by at least one C1- 3 aliphatic hydrocarbon radical, a C1- 4 alkoxy radical, Cl or Br; R1 and R2 are H, Cl, Br, a C1- 6 aliphatic hydrocarbon radical or cyclohexyl; R3 and R4 are Cl, Br, cyano, nitro, a C1- 6 aliphatic hydrocarbon radical or phenyl. The (a) polymer may be polystyrene and/or a copolymer of styrene and acrylonitrile. Compound (c) may be 2,3-diethyl - 2,3 - diphenylbutane; 2,2,3,3 - tetraphenylbutane or 2,3 - dimethyl - 2,3 - di - p - tolylbutane. The bromide (b) may be hexabromododecane, tris - (2,3 - dibromopropyl)-phosphate or tetrabromoethane. The composition may be made by dissolving the three components in methylene chloride. The composition may also contain a foaming agent, e.g. pentane, and may be formed into a foamed sheet.

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