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    6.
    发明专利
    未知

    公开(公告)号：DE1905012A1

    公开(公告)日：1970-08-06

    申请号：DE1905012

    申请日：1969-02-01

    Applicant: BASF AG

    Inventor： HOFFMANN DR HORST ,  KRAUCH DR CARL-HEINRICH ,  OTTO DR HANS-WERNER ,  VOLKERT DR OTTO

    IPC: G03C1/83 ,  G03F7/029 ,  G03F7/09 ,  G03C1/68

    Abstract: 1287216 Photo-polymerizable materials BADISCHE ANILIN- & SODA-FABRIK AG 30 Jan 1970 [1 Feb 1969] 4547/70 Heading G2C A photo-polymerizable material for producing printing plates comprises a support which; or is coated with a layer which, reflects at least 40% of incident light and a layer comprising a polymeric binder, a monomer or momomers of which all or the major portion contain more than one polymerizable double bond, a photo-initiator, a metal complex dye and optionally a polymerization inhibitor the binder, monomer(s), photoinitiator and dye all being soluble in an organic solvent in which the polymer from the monomer(s) is insoluble. A polyamide is the preferred polymeric binder and the preferred dyes are chromium or copper complexes of azo and azomethine dyes and copper phthalocyanine dyes. The preferred support is a support coated with a reflective polyurethane paint. The material is imagewise exposed and developed to produce a relief plate; if the dye is omitted no useful plate is obtained as the unexposed areas become polymerized due to the reflective support.

    8.
    发明专利
    未知

    公开(公告)号：DE1184500B

    公开(公告)日：1964-12-31

    申请号：DEB0072248

    申请日：1963-06-11

    Applicant: BASF AG

    Inventor： SIEBEL DR HANS PETER ,  DAUMILLER DR GUENTHER ,  HAUSS DR ALFRED ,  OTTO DR HANS-WERNER

    IPC: C08F267/06 ,  C08F279/02 ,  C08F279/04 ,  C08L25/12 ,  C08L51/00 ,  C08L51/04

    Abstract: Impact - resistant thermoplastic moulding compositions comprise a homogeneous mixture of (A) a graft copolymer consisting of (1) an elastomeric copolymer of di-n-butyl fumarate and butadiene in a weight ratio of from 80:20 to 40:60 to which there has been grafted (2) 20 to 100% by weight, with reference to component (1), of either styrene or a styrene-acrylonitrile mixture containing up to 30% by weight of acrylonitrile; and (B) a copolymer of styrene and acrylonitrile in a weight ratio of from 60:40 to 90:10, the weight ratio of (A) to (B) being from 70:30 to 90:10 with the proviso that component (1) is present in an amount of 10 to 35% by weight with reference to the total polymer mixture. Component (1) may additionally comprise up to 20% by weight of units of another monomer, e.g. acrylic and methacrylic esters, vinyl ketones, vinyl esters and vinyl ethers, specified compounds being acrylonitrile, methyl, ethyl and n-butyl acrylate, vinyl acetate and propionate, and methyl isopropenyl ketone. The preparation of component (1) and the subsequent graft polymerization are carried out in aqueous emulsion using anionic emulsifiers and initiators such as persulphates, peroxides, hydroperoxides and azo-compounds (e.g. potassium persulphate, benzoyl peroxide, lauroyl peroxide or azo-diisobutyronitrile) or redox systems (e.g. cumene or t-butylcumene hydroperoxide with sodium hydroxymethyl sulphinate); activators such as triethanolamine or ferrous ethylenediamine tetraacetic acid complex may also be present. The polymers (A) and (B) can be combined by mixing together aqueous dispersions of each, or an aqueous dispersion of (A) with a suspension of (B) in methanol; the polymers may also be mixed in powder form, e.g. in an extruder or on mixing rolls. In the examples, component (1) is prepared by polymerizing di-n-butyl fumarate and butadiene, with or without acrylonitrile or methyl isopropyl ketone, in aqueous emulsion containing sodium paraffin sulphonate or sodium alkyl sulphonate as emulsifier and a redox catalyst, monomers and various catalyst components being added during the course of polymerization.

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