METHOD FOR COATING PLASTIC MOLDING

    公开(公告)号:JPH10120809A

    公开(公告)日:1998-05-12

    申请号:JP25344997

    申请日:1997-09-18

    Applicant: BASF AG

    Abstract: PROBLEM TO BE SOLVED: To make it possible to maintain the impermeability of a relatively small organic molecule comprising, e.g. methanol for a long period of time even under a mechanical load by fluorinating, sulfonating, oxidizing or activating the surface of a plastic molding, and then coating it with a silane coating material. SOLUTION: This method for coating a plastic molding comprises activating the surface of a plastic molding by fluorination, sulfonation, oxidization or the like, coating the surface with a silane coating material preferably containing a silane compound represented by the formula (wherein A is a 1-20C alkylene group of which the nonadjacent methylenes except methylenes at the α and ωpositions can be substituted by the oxygen atoms of an ether functional group; and R is a 1-4C alkyl group) and bisphenol A as a dihydroxy compound serving to crosslink, and curing the coating.

    PRODUCTION OF REACTION RETARDANT-ADDED 2-12C ALKENE POLYMER

    公开(公告)号:JPH1053605A

    公开(公告)日:1998-02-24

    申请号:JP13849097

    申请日:1997-05-28

    Applicant: BASF AG

    Abstract: PROBLEM TO BE SOLVED: To provide a method for producing the subject polymer, capable of efficiently obtaining the polymer, easy in the activation and reactivation of a catalyst and capable of inhibiting the generation of a troublesome polymerization phenomenon in the polymerization system by polymerizing an alkene monomer in the presence of a specific catalyst composition in a specified temperature range and in a specified pressure range. SOLUTION: This method for producing the polymer comprises polymerizing a 2-12C alkene monomer (preferably a 2-12C alkene-1, e.g. ethylene or propylene) in the presence of a catalyst composition of the formula (M is boron, aluminum, gallium, indium, thallium; R , R are each H, a 1-10C alkyl, a 6-15C aryl, etc.) at a temperature of -50 to 300 deg.C under a pressure of 0.5 to 3000 bar. The catalyst composition includes a Ziegler-Natta catalyst composition, especially preferably a catalyst system containing a metallocene complex and a metallocene ion-forming compound. Thereby a troublesome polymerization phenomenon generated due to a high catalyst action in the catalyst system can be suppressed. The used catalyst can simply be inactivated and further reactivated.

    PROPYLENE POLYMER
    3.
    发明专利

    公开(公告)号:JPH1180245A

    公开(公告)日:1999-03-26

    申请号:JP17743498

    申请日:1998-06-24

    Applicant: BASF AG

    Abstract: PROBLEM TO BE SOLVED: To provide a propylene polymer which has a high rigidity/strength ratio and low chlorine content, and can be produced by a process with high productivity. SOLUTION: A propylene polymer containing a matrix comprising a propylene homopolymer and a copolymer of propylene with other alkene is first dissolved in boiling xylene, the solution is cooled at a cooling rate of 10 deg.C per hr to 25 deg.C, the temperature is then raised to separate the propylene polymer into fractions of various solubilities according to the stereoregularities of polymer chains and the comonomer distributions, wherein the matrix remaining undissolved when the cooled propylene polymer solution is heated to 80 deg.C satisfies one or more of the following conditions: i) the matrix remains undissolved in an amount above 20 wt.% when further heated to 112 deg.C; ii) it remains undissolved in an amount above 8 wt.% when further heated to 117 deg.C; and iii) it remains undissolved in an amount above 1 wt.% when further heated to 122 deg.C.

    EXPANDABLE STYRENE POLYMER
    5.
    发明专利

    公开(公告)号:JPH10101838A

    公开(公告)日:1998-04-21

    申请号:JP19171097

    申请日:1997-07-17

    Applicant: BASF AG

    Abstract: PROBLEM TO BE SOLVED: To obtain an expandable styrene polymer containing a foaming agent and a specific foaming auxiliary and exhibiting an improved expandable characteristic without affecting other treating characteristics and product characteristics. SOLUTION: This expandable styrene polymer contains a foaming agent and 0.5-20wt.% of a foaming auxiliary. Therein, the foaming auxiliary comprises a 2-20C aliphatic olefin oligomer which is liquid at room temperature and has a number - average polymerization degree of 2-200, preferably 2-100, and plural terminal double bonds, such as propene oligomer or isobutene oligomer.

    10.
    发明专利
    未知

    公开(公告)号:DE19726796A1

    公开(公告)日:1999-01-07

    申请号:DE19726796

    申请日:1997-06-24

    Applicant: BASF AG

    Abstract: Propylene polymers (I) contain a matrix of propylene homopolymer and a copolymer of propylene and other alkenes. The novelty is that the polymers satisfy certain condition(s) when separated by tacticity and comonomer distribution of the polymer chain. They are first dissolved in boiling xylene, then the solution is cooled to 25 degrees C at a rate of 10 degrees C/hour. The polymers are separated, into fractions of different solubility at increasing temperature, whilst the matrix remains undissolved on heating the cooled solution to 80 degrees C. The conditions are that the amount of matrix remaining undissolved on further heating is (i) > 20 wt.% at 112 degrees C; (ii) > 8 wt.% at 117 degrees C and/or > 1 wt.% at 122 degrees C. Also claimed are (1) a method of producing (I); and (2) films, fibres or mouldings made from (I).

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