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    2.
    发明专利
    未知

    公开(公告)号：DD158553A5

    公开(公告)日：1983-01-19

    申请号：DD22997081

    申请日：1981-05-14

    Applicant: HOECHST AG

    Inventor： KRAUS HELMUT ,  WEINLICH JUERGEN ,  PLEWAN OTTO

    IPC: C08K5/42 ,  C08L51/00 ,  H01M2/16 ,  C08L27/06

    Abstract: The sinterable polyvinyl chloride molding composition described is composed of 99.8 to 97% by weight, relative to the molding composition, of a suspension graft copolymer which is, in turn, composed of 99.7 to 85% by weight of polymerized vinyl chloride units, 0.9 to 10.5% by weight of polymerized ethylene units and 0.09 to 10.5% by weight of polymerized vinyl acetate units, with the proviso that the total of the polymerized ethylene and vinyl acetate units is 0.3 to 15% by weight, relative to the graft copolymer, and also 0.01 to 0.5% by weight, relative to the molding composition, of at least one free alkylarylsulfonic acid having 3 to 16 C atoms in the alkyl chain or at least one alkylsulfonic acid having 8 to 16 C atoms, and also 0.005 to 0.5% by weight, relative to the molding composition, of at least one water-soluble wetting agent which is free from metal ions and contains 12 to about 80 C atoms and a quaternary N atom which forms a salt with a carboxylic or sulfonic acid group. The molding composition gives sintered moldings, particularly separator plates for electrical cells, which have advantageous properties.

    3.
    发明专利
    未知

    公开(公告)号：DD158552A5

    公开(公告)日：1983-01-19

    申请号：DD22996481

    申请日：1981-05-14

    Applicant: HOECHST AG

    Inventor： WEINLICH JUERGEN ,  PLEWAN OTTO ,  LEUGERING HANS-JOACHIM

    IPC: C08L27/06 ,  C08J3/18 ,  C08L51/00 ,  C09D127/06

    Abstract: A process is described for the preparation of mixtures for processing as plastisols or organosols, wherein at least one known plasticizer, at least one first vinyl chloride copolymer and at least one vinyl chloride homopolymer or a second vinyl chloride copolymer are mixed together, if appropriate with the addition of further known substances. The first copolymer is a specific vinyl chloride graft copolymer, of which 5 to 70% by weight are employed, relative to the total quantity of polymers present in the mixture. It contains 99.5 to 88% by weight of polymerized units of vinyl chloride, 0.1 to 11.9% by weight of polymerized units of vinyl acetate and 0.1 to 2.2% by weight of polymerized units of ethylene. The remaining polymer(s) employed is/are prepared in accordance with customary processes. Mixtures prepared in this manner produce plastisols or organosols which have a low viscosity and good stability on storage and which also enable uniform coatings to be obtained by applying a thin layer.

    5.
    发明专利
    未知

    公开(公告)号：DE3426929A1

    公开(公告)日：1986-01-23

    申请号：DE3426929

    申请日：1984-07-21

    Applicant: HOECHST AG

    Inventor： ENGELMANN MANFRED DR ,  KRAUS HELMUT DR ,  PLEWAN OTTO

    IPC: C08K5/00 ,  C08K5/19 ,  C08L27/06 ,  H01B3/44 ,  H01M2/16 ,  C08L33/08 ,  C08L31/04 ,  C08L23/08 ,  C08L51/06 ,  H01M2/14 ,  C25B13/04

    Abstract: A molding composition which is essentially composed of a mixture of at least two polymers based on vinyl chloride and at least one water-soluble surfactant is described. One of the polymers is a sinterable vinyl chloride/alkyl acrylate copolymer which can contain, in addition, polymerized units of vinyl acetate and ethylene. At least one further polymer is a vinyl chloride polymer which can contain up to 5% by weight of polymerized units of vinyl acetate and ethylene. The molding composition is suitable for the production of sintered, porous, flexible moldings, in particular separator compartments for electric cells.

    6.
    发明专利
    未知

    公开(公告)号：DE3334667A1

    公开(公告)日：1985-04-11

    申请号：DE3334667

    申请日：1983-09-24

    Applicant: HOECHST AG

    Inventor： ENGELMANN MANFRED DR ,  PLEWAN OTTO ,  KRAUS HELMUT DR ,  MIELKE INGOLF DR

    IPC: C08F2/16 ,  C08F14/06 ,  C08F291/00 ,  C08K3/30 ,  C08K3/32 ,  H01M2/16 ,  C08F6/24

    Abstract: Prodn. of a sinterable, fine-particle PVC moulding compsn. by homo-, CO- or graft suspension polymerisation of VC monomer in presence of an oil-soluble free-radical initiator, a suspension stabiliser, emulsifier and opt. other polymerisation aids. After ending the polymerisation and sepg. the bulk of the polymer a non-ionic or amphoteric wetting agent is added before drying. The process novelty claimed is the addn. at this stage of an aq. soln. of a non- surface active acid with an acid dissociation constant up to 3 pKs at 20 deg.C.. Pref. 0.01-5 wt.% on dry polymer of a phosphorus or sulphur contg. acid, esp. P contg. acid, with low volatility at 120 deg.C. is added after sepg. the greater part of the polymer from the aq. phase after polymerisation has ended. The polymer has a K-value =55-90, bulk density =400-700g/cdm, and a particle distribution of 99-30 wt.% less than 33 microns, 1-60 wt.% 33-63 microns, 0-9 wt.% 63-125 microns and 0.1 wt.% greater than 125 microns. Sintered shaped articles esp. separator plates for electric cells are claimed.

    USE OF A VINYL-CHLORIDE GRAFT POLYMER IN PROCESSING PLASTISOLS
    7.
    发明专利
    USE OF A VINYL-CHLORIDE GRAFT POLYMER IN PROCESSING PLASTISOLS 未知

    公开(公告)号：DE3165031D1

    公开(公告)日：1984-08-30

    申请号：DE3165031

    申请日：1981-05-13

    Applicant: HOECHST AG

    Inventor： WEINLICH JURGEN DR ,  PLEWAN OTTO ,  LEUGERING HANS-JOACHIM DR

    IPC: C08L27/06 ,  C08J3/18 ,  C08L51/00 ,  C09D127/06

    Abstract: A process is described for the preparation of mixtures for processing as plastisols or organosols, wherein at least one known plasticizer, at least one first vinyl chloride copolymer and at least one vinyl chloride homopolymer or a second vinyl chloride copolymer are mixed together, if appropriate with the addition of further known substances. The first copolymer is a specific vinyl chloride graft copolymer, of which 5 to 70% by weight are employed, relative to the total quantity of polymers present in the mixture. It contains 99.5 to 88% by weight of polymerized units of vinyl chloride, 0.1 to 11.9% by weight of polymerized units of vinyl acetate and 0.1 to 2.2% by weight of polymerized units of ethylene. The remaining polymer(s) employed is/are prepared in accordance with customary processes. Mixtures prepared in this manner produce plastisols or organosols which have a low viscosity and good stability on storage and which also enable uniform coatings to be obtained by applying a thin layer.

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