公开(公告)号：DE4014806A1

公开(公告)日：1991-11-14

申请号：DE4014806

申请日：1990-05-09

Applicant: BASF AG

Inventor： GEBHARD HELMUT ,  HEINRICH FRITZ DR

IPC: G01N11/10 ,  G01N33/32

Abstract: The method of measuring the viscosity and viscoelastic properties of thin films under exactly defined conditons involves placing more than 20 measurement bodies (4) with a smaller contact surface than the area of the measurement specimen (1) in a magazine. The measurement bodies are automatically applied to untouched areas of the surface of the specimen in succession to perform measurements in conjunction with a position sensor (5,6). USE/ADVANTAGE - For measurement of rheological properties on films on selected substrates (2) during e.g, burning-in under conditions of varying temp. Eliminates need to prepare many specimens with different degrees of hardening.

公开(公告)号：DE19507777A1

公开(公告)日：1996-09-12

申请号：DE19507777

申请日：1995-03-06

Applicant: BASF AG

Inventor： WUENSCH JOSEF DR ,  TUTTELBERG LEMBIT ,  HEINRICH FRITZ DR ,  BRAND SIEGBERT DR

IPC: C08F2/08 ,  C08F2/14 ,  C08F12/04 ,  C08F12/08

Abstract: Particulate polystyrene preparations capable of being filtered are obtained by anionic polymerisation of styrene in a non-aqueous dispersion. Polymerisation is carried out in an aliphatic hydrocarbon as dispersing agent and with a styrene-diene-styrene three-block copolymer as auxiliary dispersing agent, for example based on polybutadiene or polyisoprene.

公开(公告)号：DE4303917A1

公开(公告)日：1993-10-14

申请号：DE4303917

申请日：1993-02-10

Applicant: BASF AG

Inventor： GEBHARD HELMUT ,  HEINRICH FRITZ DR

IPC: G01N27/20 ,  G01N33/32 ,  G01N27/04 ,  G01R27/00

Abstract: (A) Quality testing of lacquer layers on plate edges involves measuring a parameter (pref. voltage drop) characterising the electrical conductivity of the lacquer layer and comparing the measured value with a reference value to obtain a quality value. (B) The test appts. comprises a plate holder (1), a stepwise adjustable voltage source (4) which is connected to the plate (2) by an earth lead (6) and by a series resistance and a slide contact (7) sliding along a plate edge (10), and an electronic processor (15) which is connected directly to the slide contact and the earth lead and is connected to a display (13). ADVANTAGE - The test method provides rapid and quantitative estimation of the coating quality and thus corrosion protection at plate edges.