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    Production of rubber-modified vinylaromatic polymers
    2.
    发明授权
    Production of rubber-modified vinylaromatic polymers 失效
    生产橡胶改性的乙烯基聚合物

    公开(公告)号：US3658946A

    公开(公告)日：1972-04-25

    申请号：US3658946D

    申请日：1969-05-08

    Applicant: BASF AG

    Inventor： BRONSTERT KLAUS ,  BUCHHOLZ KARL ,  ECHTE ADOLF ,  HOFMANN JUERGEN

    IPC: C08F291/00 ,  C08F279/02 ,  C08F15/00

    CPC classification number: C08F279/02 ,  C08F212/04

    Abstract: PROCESS FOR THE PRODUCTION OF IMPACT-RESISTANT POLYMERS BY THE CONTINUOUS POLYMERIZATION OF A SOLUTION OF A DIENE ELASTOMER OR ELASTOMERIC COPOLYMER OF ETHYLENE AND PROPYLENE, THE STARTING MATERIALS BEING FIRST PARTIALLY POLYMERIZED TO SUCH AN EXTENT THAT THE SOLIDS CONTENT OF THE MIXTURE IS 1.1 TO 2 TIMES THE CONTENT OF DIENE ELASTOMER BUT NOT MORE THAN 16% BY WEIGHT, THEN INTRODUCED INTO AN ISOTHERMAL POLYMERIZATION STAGE WHERE A MIXTURE CONTAINING LESS THAN 50% BY WEIGHT OF SOLIDS IS PREPARED AT A TEMPERATURE OF FROM 50* TO 150*C. WHILE MIXING, WHICH MIXTURE IS TOTALLY POLYMERIZED IN THE DOWNSTREAM CONTINUOUS POLYMERIZATION STAGES AT A TEMPERATURE OF UP TO 250*C. TO GIVE A MIXTURE CONTAINING MORE THAN 60% BY WEIGHT OF SOLIDS, AND THEN FREED IN A CONVENTIONAL MANNER FROM VOLATILE CONSTITUENTS.

    Plastics having antistatic properties
    7.
    发明专利
    Plastics having antistatic properties 未知

    公开(公告)号：GB1106476A

    公开(公告)日：1968-03-20

    申请号：GB2386765

    申请日：1965-06-04

    Applicant: BASF AG

    Inventor： BUCHHOLZ KARL ,  ILLING GERHARD ,  DREHER ERICH ,  ZAHRADNIK FRANZ

    IPC: C08L59/02 ,  C08L77/00 ,  C08L101/00

    Abstract: Antistatic plastics materials are obtained by incorporating 0.5 to 20 wt. per cent of an antiitatic agent which is a reaction product of an alkylene oxide and a polyamide in the melt of 99.5 to 80 wt. per cent of the plastics material. Specified plastics are polystyrene, polyvinyl chloride, polyacrylates, polyethylene, polypropylene, polyformaldehyde, polycarbonates, polyamides and saturated polyesters. The antistatic agent may be obtained by reacting ethylene and/or propylene oxide with various polyamides or copolyamides, e.g. from capro-, capryl- or lauric lactam and/or adipic, suberic or sebacic acid and hexa-, octa- or dodecamethylene diamine, or mixtures thereof which may be cross-linked. In examples: (a) a reaction product of ethylene oxide and a 90/10 mixture of nylons 6 and 66 are melt-blended with (i) an impact polystyrene/rubber mix (70 parts styrene bulk polymer and 30 parts mixture of butadiene-styrene copolymer with emulsion polystyrene and (ii) nylon 6; (b) the same reaction product is kneaded at 190 to 240 DEG C. with polypropylene in the presence of di-t-butyl peroxide and the product melt-blended with polypropylene; (c) using the same peroxide a nylon 6-ethylene oxide reaction product is bulk grafted with polystyrene in the presence of calcium stearate and titanium dioxide and the product melt-blended with polystyrene; and (d) a propylene oxide-polycapryllactam reaction product is melt-blended with acetylated polyformaldehyde. Various articles which may be made from the materials are mentioned.

    8.
    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 .

    9.
    发明专利
    未知

    公开(公告)号：FR1463625A

    公开(公告)日：1966-12-23

    申请号：FR45943

    申请日：1966-01-14

    Applicant: BASF AG

    Inventor： BUCHHOLZ KARL ,  STAHNECKER ERHARD ,  GROHMANN JOHANNES ,  MOELLER ROLF

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

    Abstract: 1,126,913. Expandable styrene polymers. BADISCHE ANILIN- & SODA-FABRIK A.G. 14 Jan., 1966 [16. Jan., 1965], No. 1819/66. Headings C3C and C3P. Particulate expandable styrene polymers are produced by polymerizing styrene with or without one or more olefinically unsaturated monomeric polymerizable compounds in aqueous suspension in the presence of an expanding agent and 0À001 to 1% by weight on the monomers of a water-insoluble polymer of a vinyl ester, vinyl ether, acrylic ester or methacrylic ester of molecular weight 10 4 to 10 6 which will dissolve in the monomers and which is not homogeneously miscible with the styrene polymers obtained. In examples styrene, with optionally acrylonitrile, was polymerized in an aqueous mixture of a copolymer of N-vinylpyrrolidone and methyl acrylate, sodium pyrophosphate, benzoyl peroxide; pentane, hexane, butane and/or dichlorofluoromethane; and either polyvinyl isobutyl ether, polymethyl acrylate or methacrylate, poly-2-ethylhexyl acrylate, polyvinyl acetate, a butyl acrylate/vinyl acetate copolymer, polyethyl acrylate or polyvinyl propionate.

    Production of finely divided expandable thermoplastics
    10.
    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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