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    Production of stereo block butadiene polymer
    5.
    发明授权
    Production of stereo block butadiene polymer 失效

    公开(公告)号：US3489823A

    公开(公告)日：1970-01-13

    申请号：US3489823D

    申请日：1966-04-27

    Applicant: BASF AG

    Inventor： NAARMANN HERBERT ,  KASTNING ERNST-GUENTHER

    IPC: C08F136/06 ,  C08F297/02 ,  C08F3/18

    CPC classification number: C08F297/02 ,  C08F136/06 ,  C08F4/6421 ,  C08F4/68 ,  C08F4/68146 ,  C08F4/69146 ,  C08F4/64 ,  C08F4/6491 ,  C08F4/70

    Abstract: 1,138,299. Stereoblock butadiene polymers. BADISCHE ANILIN- & SODA-FABRIK A.G. 3 May, 1966 [4 May, 1965], No. 19366/66. Heading C3P. Stereoblock polymers are made by polymerizing butadiene with a Ziegler-Natta type catalyst comprising an alkyl metal compound and a compound of a transition metal of Groups IV to VIII, and whilst unreacted butadiene is still present in the polymerization mixture adding a catalyst of the same type but which converts butadiene into a polymer whose configuration is different to the configuration of the polybutadiene first prepared, and continuing the polymerization. In examples, effected in solvents, the following catalysts are used: (1) (C 2 H 5 ) 3 Al, AlBr 3 , and TiI 4 , followed by (C 2 H 5 ) 3 Al and VCl 3 , (2) as (1) but VCl 3 replaced by VCl 4 , (3) (C 4 H 9 ) 3 Al and TiCl 3 , followed by (C 2 H 5 ) 2 AlI and TiCl 3 , (4) (C 4 H 9 ) 2 AlCl and TiCl 3 , followed by (C 2 H 5 ) 2 AlI and TiCl 3 , (5) (C 2 H 5 ) 3 Al and TiCl 4 , followed by (C 2 H 5 ) 2 AlI and TiCl 3 , (6) (C 4 H 9 ) 3 Al and Ti(-OC 4 H 9 ) 4 , followed by (C 2 H 5 ) 3 Al and VCl 3 , (7) Cr triacetylacetonate and (C 4 H 9 ) 3 Al followed by (C 4 H 9 ) 3 Al, (8) Sn(C 4 H 9 ) 4 and ZrCl 4 , followed by amyl Na and TiCl 3 . The polymers may be sulphur vulcanized.

    Self-extinguishing thermoplastic compositions
    9.
    发明授权
    Self-extinguishing thermoplastic compositions 失效
    自消除热塑性组合物

    公开(公告)号：US3472799A

    公开(公告)日：1969-10-14

    申请号：US3472799D

    申请日：1966-07-18

    Applicant: BASF AG

    Inventor： BURGER HEINZ ,  DAUMILLER GUENTHER ,  GROHMANN JOHANNES ,  KASTNING ERNST-GUENTHER ,  MOHR HEINRICH ,  REUTER LOTHAR ,  WEBER HEINZ ,  WILLERSINN HERBERT

    IPC: C08J9/00 ,  C08K5/02 ,  C08L25/02 ,  C08L25/04 ,  C08L25/06 ,  C08F47/10 ,  C09K3/28

    CPC classification number: C08J9/0095 ,  C08J2325/04 ,  C08K5/02 ,  C08K5/52 ,  C08L25/02 ,  C08L25/04 ,  C08L25/06 ,  Y10S521/907 ,  C08L2666/02 ,  C08L2666/04

    Abstract: 1,147,684. Self-extinguishing thermoplastic compositions. BADISCHE ANILIN- & SODAFABRIK A.G. 19 July, 1966 [21 July, 1965], No. 32374/66. Headings C3C and C3P. A self-extinguishing composition consists of (a) a normally solid thermoplastic polymer or copolymer of styrene or substituted styrene which comprises at least 50% by wt. of the styrene or substituted styrene and less than 50% of one other olefinically unsaturated compound having intimately incorporated therewith (b) an organic bromide having a plurality of bromine atoms attached to carbon atoms and the bromine atoms making up more than 40% by wt. of the bromide, in such an amount that the composition has 0À1-5% wt. of bromine, and (c) 0À01-5% by wt. on (a) of a polymer consisting of repeating units of formula where R 1 is R 7 or XR 7 , R 7 is a C 1-6 aliphatic hydrocarbon, a phenylalkyl or phenyl radical which may be substituted by 1-5 chlorine atoms or a C 1-4 alkyl or alkoxy group and X is -O-, -CO- or -COO-; R 2 to R 6 are H, Cl or a C 1-4 alkyl or alkoxy group; and n is 3-200. The (a) polymer may be polystyrene or a copolymer of styrene and acrylonitrile. The (b) bromide may be hexabromocyclododecane or tris-(2,3-dibromopropyl) phosphate. The (c) polymer may be a polymerized diphenylmethane or ethylbenzene. The composition may be made by dissolving the three constituents in methylene chloride. The composition may also contain 3-10% of a foaming agent which is a volatile organic compound which does not dissolve the (a) polymer and has a boiling point below its softening point e.g. pentane, and may be foamed, e.g. in film form, using steam.

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