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    CENTRIFUGAL ANALYSIS METHOD FOR DISPLAYING CHARACTERISTICS OF SAMPLE
    1.
    发明专利
    CENTRIFUGAL ANALYSIS METHOD FOR DISPLAYING CHARACTERISTICS OF SAMPLE 失效

    公开(公告)号：JPH11132950A

    公开(公告)日：1999-05-21

    申请号：JP19381298

    申请日：1998-07-09

    Applicant: BASF AG

    Inventor： SCHROF WOLFGANG DR ,  ROSSMANITH PETER DR ,  MAECHTLE WALTER DR

    IPC: G01N1/28 ,  G01N15/04 ,  G01N21/49

    Abstract: PROBLEM TO BE SOLVED: To enable the simple and accurate identification of particles in a sample during centrifugation by irradiating the sample under the action of centrifugal force with laser light, evaluating the spectrum of an inelastic scattering light part of reflected scattering light, and measuring the characteristic amount of matter. SOLUTION: A sample characteristics displaying device is provided with a rotor 1 with a rotating shaft 2, and cells 3 and 4 with empty chambers to hold samples are provided for the grooves of the rotor 1. A laser light source 5 irradiates the cell 4, and a detecting device 6 identifies and stores the spectrum of reflected scattering light from the sample 4. The other light source 9 irradiates the cell 3 via notch filter 10. A detecting device 11 analyzes the spectrum of reflected scattering light passed through the notch filter 10. The laser light source 5, the detecting device 6, the light source 9, and the detecting device 11 can be synchronously moved radially along arrows 7a and 12a and vertically along arrows 7b and 12b. The detecting devices 6 and 11 transmit numerical values to an evaluating device 8.

    Drying aqueous polymer dispersions
    7.
    发明专利
    Drying aqueous polymer dispersions 未知

    公开(公告)号：DE19539460A1

    公开(公告)日：1997-04-30

    申请号：DE19539460

    申请日：1995-10-24

    Applicant: BASF AG

    Inventor： PAKUSCH JOACHIM DR ,  SCHULER BERNHARD DR ,  MAECHTLE WALTER DR ,  BAUMSTARK ROLAND DR

    IPC: C08F2/22 ,  C08J3/12 ,  C08L33/06 ,  C08L41/00 ,  C08F20/38 ,  C04B24/26 ,  C08F6/14 ,  C08F6/22 ,  C08F20/58

    Abstract: The process for drying aqueous dispersions of a polymer (B), in which the dispersion contains, as auxiliary drying agent, at least one polymer (A) containing (in polymerised form) 80-100 wt.% monomer(s) (a) of formula CH2CR1C(O)XCR2R3-R4-SOH (I) or salts thereof and 0-20 wt.% other radically polymerisable monomer(s) (b), in which R1-3 = H or 1-3 C alkyl; R4 = 1-5 C alkylene; and X = O or NH. Also claimed are: (i) the polymer powder containing (A) and (B); (ii) the mineral binder containing such polymer powder(s); (iii) the synthetic resin-plaster drying preparation containing such powder(s); (iv) the aqueous polymer dispersions of (B) with an emulsifier content of not more than 2 wt.%, containing (A) with a Mw of 5000-35,000 as added dispersant; (v) the process for the radical aqueous emulsion polymerisation of ethylenic monomers, in which (A) with a Mw of 5000-35000 is added before, during or after polymerisation; and (vi) the polymer powder obtained by drying as above.

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