Process for the preparation of vinyl chloride polymers

    公开(公告)号:DE3633818A1

    公开(公告)日:1988-04-14

    申请号:DE3633818

    申请日:1986-10-04

    Applicant: BASF AG

    Abstract: The preparation of vinyl chloride polymers by polymerisation of vinyl chloride or a mixture of vinyl chloride and one or more other monomers which can be copolymerized with vinyl chloride, with stirring in aqueous suspension, by free-radical polymerisation in the presence of protective colloids, where the polymerisation is terminated after from 70 to 97 % of the polymerisation time to be expected before the pressure drops.

    Process for the preparation of 1,2-dichloroethane

    公开(公告)号:DE3334223A1

    公开(公告)日:1985-04-11

    申请号:DE3334223

    申请日:1983-09-22

    Applicant: BASF AG

    Abstract: Process for the preparation of 1,2-dichloroethane by reacting ethylene, hydrogen chloride and oxygen in the presence of a supported catalyst, in the form of a solid bed, in only one reaction zone, separating 1,2-dichloroethane and water from the gas mixture leaving the reaction zone, and recycling the waste gas, which contains up to 20% by volume of ethylene, to the reaction zone, fresh ethylene, hydrogen chloride and oxygen being added to the waste gas.

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