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    31.
    发明专利
    未知

    公开(公告)号：SE321804B

    公开(公告)日：1970-03-16

    申请号：SE977961

    申请日：1961-10-02

    Applicant: HOECHST AG

    Inventor： ZIMMERMANN J ,  FISCHER E

    IPC: C08F283/06 ,  C08F283/10 ,  C08G65/26 ,  C08G65/332 ,  C08G65/334 ,  C08G30/00 ,  C08G33/00

    Abstract: Chemically modified 1,2-epoxyhydrocarbon polymers are obtained by reacting the polymers having groups of the formula (-CH2CHRO-)n, where R is hydrogen, an alkyl group of 1 to 6 carbon atoms or phenyl, and n is 10 to 50,000, with an olefinicall unsaturated compound which can only be homopolymerized under the action of a free radical polymerization catalyst to a product having at most an average molecular weight of 10,000, the reactants being in proportions of 100 : 1 to 1 : 100, at a temperature of 30 DEG to 150 DEG C. and in the presence of a free radical polymerization catalyst. Suitable polymers are polyethylene glycols of molecular weight 200 to 5,000,000 and their dimethyl ethers, polypropylene glycol of molecular weight 200 to 10,000, polybutylene glycol, polystyrene oxide and copolymers containing these units, as well as addition products of alkylene oxides with amines, alcohols or acids, e.g. Suitable unsaturated compounds are alpha, beta-unsaturated dicarboxylic acids and their salts, anhydrides and esters, e.g. maleic and itaconic acid compounds; crotonic acid and its derivatives; vinyl sulphones of the formula RSO2CH=CH2 and RNH-SO2CH=CH2, where R is a substituted or unsubstituted alkyl or aryl group; esters of vinylsulphonic, vinylphosphonic, propene sulphonic and cinnamic acids and salts of cinnamic acid; allyl and vinyl alkyl ethers; dihydropyran; and allyl compounds of the formula CH2=CH-CH2X, where X is hydroxy, amino, alkoxy or acyloxy. Specified catalysts are dibenzoyl, diacetyl and di-tert.-butyl peroxides, diisopropyl percarbonate, azobisisobutyronitrile and redox systems, e.g. dibenzoyl peroxide/benzoin or potassium persulphate/sodium metabisulphite. Reaction may be effected in an inert atmosphere and solvents may be employed It is considered that the reaction takes place as follows The products are water-soluble and may be used as emulsifiers and detergents.

    PLASTIC STABILIZED AGAINST ULTRAVIOLET RADIATION
    38.
    发明专利
    PLASTIC STABILIZED AGAINST ULTRAVIOLET RADIATION 未知

    公开(公告)号：ZA743664B

    公开(公告)日：1975-07-30

    申请号：ZA743664

    申请日：1974-06-10

    Applicant: HOECHST AG

    Inventor： FISCHER E ,  LUEDERS W

    IPC: C08L23/00 ,  C08K5/00 ,  C08K5/49 ,  C08K5/53 ,  C08K5/5397 ,  C08L7/00 ,  C08L21/00 ,  C08L101/00 ,  C08K

    Abstract: 1469810 Tertiary phosphine oxides and sulphides as stabilizers HOECHST AG 11 June 1974 [12 June 1973] 25850/74 Heading C3P Phosphine oxides or sulphides of formula wherein R 1 , R 2 , and R 3 are each hydroxyalkyl, oxyethylated or oxypropylated hydroxyalkyl, hydroxy cycloalkyl, haloalkyl, carbalkoxyalkyl, acyloxyalkyl, cyanoalkyl, or hydroxyalkylphenyl or halogen substituted hydroxyalkyl phenyl; are used as U.V. stabilizers in plastics materials. In examples they are used in conjunction with dilauryl thiodipropionate.

    39.
    发明专利
    未知

    公开(公告)号：DK317774A

    公开(公告)日：1975-02-17

    申请号：DK317774

    申请日：1974-06-13

    Applicant: HOECHST AG

    Inventor： PLESSEN H V ,  FISCHER E ,  SCHIESSLER S

    IPC: C01B17/88 ,  C01B17/90

    Abstract: Contaminated sulfuric acid which may contain water, organic compounds and inorganic salts is converted to almost pure concentrated sulfuric acid by passing the acid through a Pauling plant and distilling the concentrated contaminated acid.

    LIGHT DEGRADABLE SHAPED ARTICLE OF PLASTIC MATERIAL
    40.
    发明专利
    LIGHT DEGRADABLE SHAPED ARTICLE OF PLASTIC MATERIAL 未知

    公开(公告)号：ZA73262B

    公开(公告)日：1973-11-28

    申请号：ZA73262

    申请日：1973-01-12

    Applicant: HOECHST AG

    Inventor： FISCHER E

    IPC: C08K5/00 ,  C08J7/04 ,  C08J7/12 ,  C08K5/07 ,  C08L33/00 ,  C08L33/02 ,  C08L77/00 ,  C08F

    Abstract: 1409372 Coated articles HOECHST AG 12 Jan 1973 [15 Jan 1972] 1832/73 Heading B2E [Also in Division B8] A shaped article of a light-degradable plastics material, has on at least one surface a layer capable of absorbing light of any wavelength which can degrade the plastics material, the layer being capable of being detached, or dissolved under the action of water. The plastics material may be inherently light-degradable or it may have been sensitised by incorporation of sensitisers. Suitable light-degradable plastics that are specified are sensitised polyethylene, polypropylene, polystyrene, and copolymers such as butadiene/acrylonitrile/styrene copolymers, polyacetals, polyesters, cellulose esters and halogen-containing polymers such as polyvinyl chloride. The article may be in the form of sheets, films and filaments. The absorbants may be non-transparent substances such as carbon black, clay, rock dust, chalk, iron oxide, titanium dioxide and metal bronzes. If a transparent layer is desired known UV absorbants can be employed such as the hydroxy-benzophenones and hydroxybenztriazoles. The absorbing substance may be applied as a film and suitable film-forming agents are dispersions such as are polyvinyl esters, polyethers or polyacetals, e.g. a copolymer of trioxane with 80% by weight or dioxolane. Polyvinylmethyl ethers, and cellulose ethers such as methyl, dihydroxyethyl or carboxymethyl cellulose may also be used. Wholly or partially hydrolised polyvinyl acetate having a residual acetyl content of less than 25% may also be used and films of polymers which are not directly soluble in water such as polyvinyl acetate may also be employed after having been rendered sensitive to the action of water by adding readily water-soluble polymers such as polyvinyl alcohol or polyacrylamide. Polyamides such as poly-D-glutamic acid methyl ester can be rendered watersoluble also. The thickness of the absorbant protected layer can vary and is generally of 10 to 1000 microns.

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