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    COATED PARTICULATE EXPANDABLE STYRENE POLYMERS
    61.
    发明专利
    COATED PARTICULATE EXPANDABLE STYRENE POLYMERS 未知

    公开(公告)号：CA982750A

    公开(公告)日：1976-01-27

    申请号：CA148480

    申请日：1972-08-01

    Applicant: BASF AG

    Inventor： WALTER MANFRED ,  WEBER HEINZ

    IPC: C08J9/22 ,  C08J9/224

    Abstract: 1396949 Coated expandable polymer particles BADISCHE ANILIN-& SODA-FABRIK AG 4 Aug 1972 [7 Aug 1971] 36498/72 Heading B2E [Also in Division C3] Coated particulate expandable styrene polymers are made by coating particles of the expandable polymer with 0.05-2% by wt. of the polymer, of a carboxamide or mixture thereof of m.p. 60-110‹C and of formula: RCONHR' where R is a C 7-21 alkyl or alkenyl group and R' is a C 8-22 alkyl or alkenyl group. In the examples beads or granulates of polystyrene containing pentane are coated with powdered stearic, behenic, myristic or oleic N- stearylamide, stearic N-oleylamide, stearic N-2- ethylhexylamide, or behenic or myristic N-laurylamide. The coated particles may be pre-expanded with steam, stored and then expanded in a mould with steam.

    Self-extinguishing thermoplastic compositions
    63.
    发明专利
    Self-extinguishing thermoplastic compositions 未知

    公开(公告)号：GB1147684A

    公开(公告)日：1969-04-02

    申请号：GB3237466

    申请日：1966-07-19

    Applicant: BASF AG

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

    IPC: C08J9/00 ,  C08K5/02 ,  C08L25/02 ,  C08L25/04 ,  C08L25/06

    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.

    Process for working up polyolefines suspended in saturated hydrocarbons
    67.
    发明专利
    Process for working up polyolefines suspended in saturated hydrocarbons 未知

    公开(公告)号：GB919937A

    公开(公告)日：1963-02-27

    申请号：GB2983961

    申请日：1961-08-18

    Applicant: BASF AG

    Inventor： TRIESCHMANN HANS GEORG ,  LAUTENSCHLAGER HANS ,  MOELLER HANS ,  SCHMIDT-THOMEE GEORG ,  WEBER HEINZ ,  ALT CHRISTIAN ,  STAUSS THEO

    Abstract: Fibrous polyolefines purified by oxidativethermal degradation methods as described in Specification 883,804 and suspended in saturated hydrocarbons with/without water, are worked up by screening off the bulk of the saturated hydrocarbon, followed by squeezing the screened polyolefin mass and vacuum extruding the resulting polyolefin cake, optionally degrading to an intrinsic viscosity above 0,5, and finally granulating in the usual way. The polymer may be a polymer or copolymer of ethylene, propylene and/or butene. In examples sieve drums, rollers, oil presses, screen and filter belts and fruit presses are used in effecting the method specified.

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