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    Detergents and cleaning products
    12.
    发明专利
    Detergents and cleaning products 未知

    公开(公告)号：GB935733A

    公开(公告)日：1963-09-04

    申请号：GB975362

    申请日：1962-03-14

    Applicant: BASF AG

    Inventor： HERRLE KARL ,  ZUERN LUDWIG ,  SCHMIDT OSWALD ,  MERTENS HEINRICH ,  HEINMANN SIGISMUND

    IPC: A61K8/73 ,  A61K8/81 ,  A61Q5/06 ,  C11D3/37 ,  C11D9/22

    Abstract: Detergent compositions, which may be in solid, powder, liquid or paste form contain as a soil suspending agent 0,5-5%, preferably 1-3%, by weight of the total composition of at least one water-soluble, e.g. an alkali metal (preferably sodium) or ammonium, salt of a copolymer of acrylic and/or methacrylic acid with vinylsulphonic acid, said copolymer most preferably comprising 90-80% by weight of acrylic and/or methacrylic acid and 10-20% of vinylsulphonic acid and having a K-value of 100-130. The compositions may include detergents such as soaps, alkyl sulphonates and sulphates, fatty acid condensates with aminocarboxylic and -sulphonic acids, protein condensates, polyglycol ether condensates with fatty alcohols, amines and amides, and with fatty and resin acids, and quaternary ammonium compounds, but the preferred detergent is sodium dodecylbenzene sulphonate. Lactic and citric acid; alkali metal ortho- and condensed phosphates, silicates, aminopolycarboxylates, e.g. sodium aminotriacetate and ethylene diamine tetracetate; perborates, percarbonates, hypochlorites; sodium sulphate and chloride; chlorinated hydantoin and cyanuric acid and salts thereof; aminocoumarin, diaminostilbene disulphonic acid and bis-styrylbenzene fluorescent brighteners; protein hydrolyzates; fatty amides; medium chain length alcohols; triaryl and trialkyl phosphates; and polyhydric alcohols may also be incorporated.

    PURIFICATION OF WASTE WATER FROM STYRENE BEAD POLYMER PRODUCTION
    13.
    发明专利
    PURIFICATION OF WASTE WATER FROM STYRENE BEAD POLYMER PRODUCTION 未知

    公开(公告)号：CA976284A

    公开(公告)日：1975-10-14

    申请号：CA153278

    申请日：1972-10-04

    Applicant: BASF AG

    Inventor： KEPPLER HANS-GEORG ,  ZUERN LUDWIG ,  STAHNECKER ERHARD

    IPC: C02F1/58 ,  C02F1/52 ,  C02F1/72 ,  C02F9/00

    Abstract: 1396755 Purifying waste water BADISCHE ANILIN- & SODA-FABRIK AG 6 Oct 1972 [7 Oct 1971] 46193/72 Heading C1C In a process for purifying waste water, containing suspended matter and resulting from the manufacture of a styrene bead polymer in the presence of a vinyl pyrrolidone polymer or vinyl alcohol polymer used as suspension stabilizers, the suspended matter is flocculated by heating the waste water in the presence of from 0À02 to 5% by weight of sodium, potassium or ammonium persulphate. The waste water may be heated to 110-180‹ C. in the presence of the persulphate. Activated charcoal, silica or bentonite may be added to the waste water before, during or after heating. The flocculate may be removed by a suction belt strainer or by means of a decanter.

    16.
    发明专利
    未知

    公开(公告)号：FR1507907A

    公开(公告)日：1967-12-29

    申请号：FR91064

    申请日：1967-01-13

    Applicant: BASF AG

    Inventor： ZUERN LUDWIG ,  STAHNECKER ERHARD ,  GROHMANN JOHANNES ,  BUCHHOLZ KARL

    IPC: C08J9/00

    Abstract: 1,163,730. Moulding compositions. BADISCHE ANILIN- & SODA-FABRIK A.G. 13 Jan., 1967 [15 Jan., 1966], No. 1928/67. Headings C3C and C3P. Particulate moulding compositions consisting of a mixture of a styrene polymer and an expanding agent, wherein the particles contain 0.001-0.6% by weight of the styrene polymer, in homogeneous distribution, of a brominated polymer of a 1,3-diene may be made by polymerizing monomeric styrene in a heating process, with or without other monomers, in the presence of an expanding agent and the brominated polymers and then cooling, or polymerizing styrene in aqueous suspension and adding the bromine compounds, with or without the expanding agent during polymerization at a point when the particles no longer divide. Exemplified styrene polymers are polystyrene and styrene copolymers which contain at least 50% by weight of styrene units. The copolymerization units include 2, methylstyrene, acrylonitrile, methacrylonitrile, esters of acrylic or methacrylic acids and alcohols having 1-8 C, esters of fumaric acid and alcohols having 1-8 C, vinyl pyridine, N-vinyl compounds such as N-vinyl carbazole, butadiene or small amounts of divinylbenzene. Examples of suitable brominated polymers of 1,3-dienes are the bromination products of butadiene polymers, isoprene polymers and chloroprene polymers. Specific examples of suitable brominated polymers are 1,2,5,6 - tetrabromocyclododecane, brominated cyclo-octadiene - (1,5), 1,2,5,6,9,10- hexabromocyclododecane, brominated 1-vinylcyclohexene-(3) or brominated polybutadiene which has a linear structure. Bromination is carried out using elemental bromine, the reaction being carried out in solution or dispersion. Suitable solvents are n-butanol, CS 2 , glacial acetic acid or CCl 4 .

    Production of finely particled expandable styrene polymers
    17.
    发明专利
    Production of finely particled expandable styrene polymers 未知

    公开(公告)号：GB1049144A

    公开(公告)日：1966-11-23

    申请号：GB3469563

    申请日：1963-09-03

    Applicant: BASF AG

    Inventor： ZUERN LUDWIG ,  MUELLER-TAMM HEINZ ,  GROHMANN JOHANNES

    IPC: C08F257/02 ,  C08F291/00 ,  C08J9/20

    Abstract: Finely particled expandable styrene polymers may be manufactured by polymerizing styrene or mixtures of styrene with other a -ethylenically unsaturated monomeric polymerizable compounds containing preponderant amounts of styrene, in aqueous suspension in the presence of suspension stabilizers and blowng agents using polymerization catalysts at temperatures between 50 DEG and 120 DEG C. wherein the styrene or mixture of styrene with other a -ethylenically unsaturated monomeric polymerizable compounds contain dissolved therein at least one polymer of an a -ethylenically unsaturated monomeric polymerizable compound and the solution has a viscosity between 15 and 60,000 cp. at 25 DEG C. The preferred suspension stabilizers are sodium pyrophosphate, carboxymethylcellulose, polyvinylpyrollidone and a copolymer of vinylpyrollidone with methyl acrylate. In the examples the preferred blowing agents are pentane, a propane /tetrachloroethylene mixture and hexane, and the preferred catalysts are benzoyl peroxide, dibenzoyl peroxide, lauryl peroxide and azoisobutyronitrile. In Example (1) polystyrene is dissolved in styrene, (2) a styrene-acrylonitrile copolymer is dissoved in styrene, (3) a styreneacrylonitrile copolymer is dissolved in a mixture of styrene and acrylonitrile, (4) polystyrene is dissolved in styrene, (5) poly-a -methylstyrene is dissolved in a mixture of styrene, methyl methacrylate and N-vinylpyrollidone, (6) a styrene-2,5-dichlorostyrene copolymer is dissolved in a mixture of styrene and 2,5-dichlorostyrene and (7) polystyrene is dissolved in styrene.

    Production of finely divided expandable thermoplastics
    18.
    发明专利
    Production of finely divided expandable thermoplastics 未知

    公开(公告)号：GB1024195A

    公开(公告)日：1966-03-30

    申请号：GB128163

    申请日：1963-01-11

    Applicant: BASF AG

    Inventor： STAHNECKER ERHARD ,  MUELLER-TAMM HEINZ ,  ZUERN LUDWIG ,  GROHMANN JOHANNES ,  BUCHHOLZ KARL

    IPC: C08F2/00 ,  C08F2/18 ,  C08J9/20

    Abstract: A finely-divided expandable thermoplastic is produced by polymerization of monomers in fine dispersion in an aqueous medium, a liquid or liquefiable gas expanding agent being added when the final spectrum of polymer particles sizes has been established the addition being completed at the latest when polymerization is 95% complete. Specified monomers are: styrene, vinyl chloride, vinylidene chloride, vinyl ethyl ether, vinyl acetate, N-vinyl carbazole, ethyl acrylate, acrylonitrile and methacrylamide. Specified expanding agents which are non-solvents for the polymer are: propane, butane, pentane, hexane, cyclopentane, cyclohexane, dichlorodifluoromethane and 1 : 2 : 2-trifluoro-1 : 1 : 2-trichloro-ethane. The process may be carried out at 50-100 DEG C. in the presence of 0.2-0.5% of a catalyst, e.g. benzoyl peroxide or azoisobutyronitrile. Pressure due to the vapour pressure of the reactants may be applied. Additives may be dyes, plasticizers, flame retardants, e.g. chloroparaffins or brominated oligomers of butadiene, and/or protective colloids. The expanding may be added to the extent of 3-15% of the monomer and may contain a solvent, e.g. methanol or ethanol but one component should have a b.p. below the softening point of the mixture. In Example 1, sodium pyrophosphate, styrene acrylonitrile, n-butyl stearate, benzoyl peroxide and a copolymer of N-vinylpyrrolidone and methyl acrylate are mixed in water and heated. Pentane is added as expanding agent. In the other examples, (2) the acrylonitrile and n-butyl stearate are omitted, (3) hexabromocyclododecane is added in place of acrylonitrile and n-butyl-stearate and the expanding agent is a pentane/1 : 1 : 2 - trifluoro - 1 : 2 : 2 - trichloroethane mixture, (4) methyl methacrylate is added in place of acrylonitrile and n-butyl stearate and the expanding agent is a pentane/methanol mixture.

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