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    Blends comprising chlorinated polyvinyl chloride and chlorinated polyethylene
    1.
    发明授权
    Blends comprising chlorinated polyvinyl chloride and chlorinated polyethylene 失效
    包含氯化聚氯乙烯和氯化聚乙烯的混合物

    公开(公告)号：US3459692A

    公开(公告)日：1969-08-05

    申请号：US3459692D

    申请日：1966-04-21

    Applicant: DYNAMIT NOBEL AG

    Inventor： BUNING ROBERT ,  KONERMANN HANS-EWALD ,  DIESSEL KARL-HEINZ ,  BIER GERHARD

    IPC: C08L27/24 ,  C08F29/24 ,  C08F29/04 ,  C08F29/14

    CPC classification number: C08L27/24 ,  C08K5/09 ,  C08L23/06 ,  C08L23/28 ,  C08L31/04 ,  C08L33/20 ,  C08L2666/04

    Abstract: A composition comprises (i) from 0.5 to 25 parts by weight of an after-chlorinated polyethylene having a relative viscosity of of 1.5 to 18 and a chlorine content of from 20 to 60% by weight, and (ii) from 99.5 to 75 parts by weight of an after-chlorinated stereoregular polyvinylchloride having a relative viscosity of 1.5 to 6.5 and a chlorine content of from 58 to 71% by weight, the chlorine atoms of the after-chlorinated polyvinyl chloride originally being 55 to 85% syndiotactically arranged. Other components of the composition may be: polyvinyl acetate, polyethylene, polyacrylonitrile, lubricants, e.g. low molecular weight polyethylene or barium cadmium stearate, stabilizers, pigments, dyestuffs, fillers, and light-protection agents, e.g. phosphorous acid esters. The chlorination of polyvinyl chloride in suspension, using a swelling agent, excess chlorine, and ultra-violet light, is described in the examples. In comparative Examples 5-8, an after-chlorinated atactic polyvinyl chloride is used in place of the stereoregular polymer. The compositions may be formed into shaped elements or coatings.

    Self-supporting construction material for the manufacture of corrosion-resistant parts of apparatus in chemical plants,especially electrolysis plants
    2.
    发明授权
    Self-supporting construction material for the manufacture of corrosion-resistant parts of apparatus in chemical plants,especially electrolysis plants 失效
    用于制造化学植物，特别是电解质植物的装置耐腐蚀部件的自支撑构造材料

    公开(公告)号：US3556975A

    公开(公告)日：1971-01-19

    申请号：US3556975D

    申请日：1967-04-26

    Applicant: DYNAMIT NOBEL AG

    Inventor： HASS KARL ,  KOLHAGEN WALTER ,  CZEHOVSKY GUNTHER ,  KONERMANN HANS-EWALD

    IPC: C25B9/00 ,  B01K3/10

    CPC classification number: C25B9/00

    Abstract: THIS SPECIFICATION DESCRIBES A NOVEL USE FOR A PARTICULAR CHLORINATED HYDROCARBON POLYMER. THE POLYMER HAS A HYDROCARBON BACKBONE WITH CHLORINE SUBSTITUENTS THEREON. THE POLYMER CAN BE MANUFACTURED BY INITIALLY POLYMERIZING VINYL CHLORIDE, ETHYLENE, OR 1,2-DICHLORETHYLENE ALONE OR IN COMBINATION WITH EACH OTHER, AND THEN POST CHLORINATING THE POLYMERS TO PRODUCE A CHLORINATED POLYMERIC PRODUCT HAVING A CHLORINE CONTENT OF ABOUT 60 TO 73 WEIGHT PERCENT ARRANGED ABOUT 50 TO 90% IN A 1,2-DICHLOROETHYLENE CONFIGURATION. THE PRODUCT POLYMER IS SUBSTANTIALLY INSOLUBLE IN ACETONE AND HAS A RELATIVE VISCOSITY OF ABOUT 1.3 TO 25 WHEN MEASURED AS A 0.5 WEIGHT PERCENT SOLUTION IN O-DICHLOROBENZENE. THESE POLYMERS HAVE BEEN FOUND TO BE PARTICULARLY WELL ADAPTED TO PRODUCE DIMENSIONALLY STABLE, SELF-SUPPORTING, CORROSION-RESISTANT ARTICLES. THESE ARTICLES HAVE FOUND EXCEPTIONAL USE IN THE MANUFACTURE OF PARTS OF APLPARATUS USED IN A CORROSIVE ENVIRONMENT IN CHEMICAL PROCESSE. OF SPECIAL IMPORTANCE IS THE USE OF ARTICLES DESCRIBED IN ELECTROLYTIC PROCESSES, PARTICULARLY FOR CHLORINE PRODUCTION.

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