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    1.
    发明专利
    未知

    公开(公告)号：DE1520941A1

    公开(公告)日：1970-02-19

    申请号：DE1520941

    申请日：1960-06-07

    Applicant: STAMICARBON

    Inventor： VAN DEN BERG CORNELIS EMILE PE ,  HENDRIKS HENDRIK ,  JOSEPHUS MUYTJENS MATHIAS

    IPC: B01D11/04 ,  B01J19/28 ,  B08B3/12 ,  C07F9/165 ,  C08F6/24

    Abstract: Removing catalyst residues from a synthetic polymeric material by a process which comprises continuously passing impure polymeric material with a liquid (1) upwards within a column provided with internal obstructions, and continuously passing a liquid (2), heavier than liquid (1) and at least not completely miscible with (1), downwards within the column, at such a rate that liquid (1) forms a continuous phase in the column, and imparting to the liquids in the column flow pulses at substantially regular time intervals, e.g. by a pump, and continuously withdrawing purified polymeric material together with liquid (1), from the top section of the column, and liquid substantially free of polymeric material from the bottom section of the column. Liquid (1), may be the polymerization medium and it may contain the impure polymer as a dispersion, emulsion, or a solution. Before the polymer and liquid (1) is supplied to the base of the column, it may be treated with an alcohol such as water-free methanol, ethanol, isopropyl alcohol, or butanol, to which a small amount of an acid, or base, may be added. The liquid (2), may be water, water containing 96-70% by volume of methanol, or an alcohol thickened by a polar substance such as urea, sulphuric acid, sodium hydroxide, sodium acetate, acetic acid, ethylene glycol, or glycerol. A wetting agent may be present in liquids (1) or (2). The process may be carried out using two columns in series. In the examples the catalyst residues removed are of the Ziegler-type. The polymers purified may be homo- and copolymers of ethylene, propylene, 1-butene, isobutene, styrene, butadiene, isoprene, or chloroprene.

    4.
    发明专利
    未知

    公开(公告)号：DE1520944A1

    公开(公告)日：1970-03-05

    申请号：DE1520944

    申请日：1961-01-26

    Applicant: STAMICARBON

    Inventor： HENDRIKS HENDRIK ,  VAN DEN BERG CORNELIS EMILE PE

    IPC: C08F8/00 ,  C08F8/42 ,  C08K5/56 ,  C08L23/26

    Abstract: The physical properties of polymers of monolefinically-unsaturated hydrocarbons are changed by subjecting the polymer to the action of an "active Ziegler catalyst" while suspended or dissolved in a liquid vehicle. By "active Ziegler catalyst" is meant a catalyst capable of polymerizing a monomer and which consists of at least one compound of a metal of Group IV to VI of the Mendel aeeff Periodic System, and a metal, hydride, or organometallic compound of Group I, II, or III. of the System. The aftertreatment of the polymers may be effected by polymerizing the monomers, in a liquid vehicle, in the presence of an amount of Ziegler catalyst in excess of that needed for polymerization. The treatment is generally carried out by maintaining the polymer in contact with the catalyst at a temperature of 60 DEG C. to 100 DEG C. for more than 2 minutes. The polymer may be polyethylene, polypropylene, poly-n-butylene, polystyrene, and copolymers of ethylene and propylene. The polymers aftertreated need not be made by the Ziegler process. The exemplified Ziegler catalysts are di-isobutyl aluminium hydride and TiCl4, and diethyl aluminium chloride and TiCl4. Polymers exemplied are polyethylene, polypropylene, and a copolymer of ethylene and butene-1.

    7.
    发明专利
    未知

    公开(公告)号：DE1420765A1

    公开(公告)日：1968-10-10

    申请号：DE1420765

    申请日：1956-06-25

    Applicant: STAMICARBON

    Inventor： PIETER SCHUHMACHER JACOBUS ,  HENDRIKS HENDRIK

    IPC: C08F2/00 ,  C08F110/02

    Abstract: A catalyst for use in the polymerization of ethylene is formed by mixing one or more compounds of Group IVa, Va or VIa metals with at least one dialkyl compound of cadmium such that Cd: a-sub group metal

    9.
    发明专利
    未知

    公开(公告)号：DE1142701B

    公开(公告)日：1963-01-24

    申请号：DEST017460

    申请日：1961-02-13

    Applicant: STAMICARBON

    Inventor： HENDRIKS HENDRIK ,  CORNELIS EMILE PETRUS VALERIUS

    IPC: C08C19/00 ,  C08F2/00 ,  C08F8/00 ,  C08F8/42

    Abstract: The degree of unsaturation present in homo- and co-polymers of hydrocarbon monomers containing more than one double bond is decreased by subjecting the polymer, in the absence of any monomer, to the action of an "active Ziegler catalyst." The action is preferably effected in a hydrocarbon or halogenated hydrocarbon solvent or diluent, at a temperature greater than 60 DEG C. for more than 2 minutes. By "Ziegler catalyst" is meant a catalyst formed by mixing at least one compound of a metal belonging to Group IV to VIII of the Mendel aeff Periodic Table with a metal, alloy, hydride, or organometallic compound of a metal of Group I to III. By "active Ziegler catalyst" is meant a catalyst which in the presence of a monomer causes a rise in temperature under adiabatic conditions. The polymers treated may be made by any process e.g. with Ziegler catalysts, metal oxides, or peroxides. The polymers treated may be mixtures, e.g. a mix of polybutadiene and an ethylene-propylene co-polymer. The polymers treated may be polybutadiene, polyisoprene, a copolymer of ethylene and propadiene, a copolymer of ethylene and hexadiene 1-5, or a copolymer of ethylene and butadiene. Specification 969,967 is referred to.

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