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    14.
    发明专利
    未知

    公开(公告)号：DE19506287A1

    公开(公告)日：1996-08-29

    申请号：DE19506287

    申请日：1995-02-23

    Applicant: BASF AG

    Inventor： RUEBENACKER MARTIN DR ,  SCHNEIDER REINHARD DR ,  NIEBERLE JUERGEN DR ,  MEYER HARALD DR ,  HARTMANN HEINRICH DR

    IPC: C08F2/32 ,  C08F6/18 ,  C08F220/02 ,  C08F226/00 ,  C08J3/12 ,  C09D7/00 ,  D06P1/52 ,  D06P1/613 ,  C08F6/14 ,  C08F228/00 ,  C09D11/02 ,  D06P1/38 ,  D06P1/16

    Abstract: The invention concerns agglomerated polymer particles made from water-expandable polymers and with a mean particle diameter of 20-5000 mu m. The agglomerated polymer particles consist of primary particles with a mean particle diameter of 0.1-15 mu m and can be produced by polymerisation of water-soluble monomers in the presence of a regulator (1-10 wt % in relation to the monomers) and of a cross linking agent (at least 2000 ppm in relation to the monomers), the process being a water-in-oil polymerisation, with subsequent azeotropic de-watering of the water-in-oil polymer emulsion containing the primary particles in the presence of agglomerating polyalkylene glycols which (a) can be obtained by addition fixation of C2-C4 alkylene oxides to alcohols, phenols, amines or carboxylic acids and (b) contain at least two alkylene oxide units incorporated by polymerisation. The agglomerated polymer particles break down into the primary particles when introduced into water. The invention also concerns processes for producing the agglomerated polymer particles and the use of said particles as thickening agents for printing pastes.

    15.
    发明专利
    未知

    公开(公告)号：DE3580312D1

    公开(公告)日：1990-12-06

    申请号：DE3580312

    申请日：1985-06-13

    Applicant: BASF AG

    Inventor： KEMPTER FRITZ ERDMANN DR ,  NIEBERLE JUERGEN DR

    IPC: C07C43/178 ,  C07C41/00 ,  C07C67/00 ,  C08G8/00 ,  C08G8/04 ,  C08G8/08 ,  C08G8/10 ,  C08G8/36 ,  C09D5/25

    Abstract: Essentially phenol-free phenol resol ethers which are bonded via o,o'-methylene ether groups are prepared by a process in which A. where the process is carried out beginning with the methylolation in an aqueous medium, the methylolation is carried out in the presence of 0.5-10% by weight, based on the phenol employed, of Me++ ions, the latter are then removed as a sparingly soluble salt, the water present as a solvent in the reaction mixture is removed at 30 DEG -80 DEG C. in the presence or absence of one or more monohydric, dihydric or trihydric alcohols and an entraining agent, and the water of reaction formed during the etherification is separated off at 45 DEG -120 DEG C., and B. where the process is carried out beginning with the methylolation in a non-polar organic solvent, the methylolation is carried out in the presence of 0.1-0.3% by weight, based on the phenol employed, of Me++ ions, the etherification is effected at 95 DEG -120 DEG C. in the presence of one or more monohydric, dihydric or trihydric alcohols, with or without recycling of the distillate which passes over, and finally residual phenol in the products prepared by A. or B. is removed by evaporation in a thin film evaporator until the phenol content is less than 1% by weight. The phenol resol ethers prepared according to the invention are useful for the preparation of coating systems and for adhesives.

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