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Patent Agency Ranking
公开(公告)号：DE4330861A1
公开(公告)日：1995-03-16
申请号：DE4330861
申请日：1993-09-11
Applicant: BASF AG
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公开(公告)号：DE58908262D1
公开(公告)日：1994-10-06
申请号：DE58908262
申请日：1989-06-24
Applicant: BASF AG
Inventor： FATH WOLFGANG DR , NACHTRAB RAINER , POLSTER RUDOLF DR
Abstract: A process for the conversion of a raw copper phthalocyanine into a pigmentary form by treatment of a finely divided raw copper phthalocyanine, whose crystallisation is interrupted and which is strongly agglomerated, with an organic solvent, in which the primary particle size, produced by ball-milling a raw copper phthalocyanine, is under 0.1 mu m, in which a suspension consisting of the organic solvent and the milled raw copper phthalocyanine (called a solvent-pigmentary suspension in the following) having pigment concentrations of 15 to 55% by weight and solvent concentrations of 15 to 85% by weight which can contain water from 0 to 30% by weight, is subjected to shear gradients between 1000 and 20,000 s over the course of a period of 2 to 1000 s, the energy uptake during the shearing being 0.01 to 0.2 kwh/kg of pigment put through, and in which, to discontinue formation in a defined manner, water is then metered into the solvent-pigmentary suspension in 0.1- to 10-fold the amount of the solvent and homogeneously mixed with the suspension.
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公开(公告)号：DE3905007A1
公开(公告)日：1990-08-23
申请号：DE3905007
申请日：1989-02-18
Applicant: BASF AG
Inventor： GOFFING FRIEDRICH DR , KROKER JOERG DR , NACHTRAB RAINER , THIELE HEINO DR
Abstract: A continuous process for the preparation of aqueous, non-self-emulsifying polymer dispersions having small particles and a long shelf life on the basis of high-viscosity reaction resins without addition of solvents by means of a screw compounder which produces vigorous dispersion, the polymer dispersions being prepared in an intensive-shear part of the screw compounder, and the water/reaction resin ratio in this intensive-shear part being at or close to the phase-inversion point, and - the specific input of energy being 0.01 - 0.15 kWh/kg, - the residence time being 0.1 - 60 sec and - the shear gradient being 2000 - 20 000 sec .
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公开(公告)号：DE3824054A1
公开(公告)日：1990-01-18
申请号：DE3824054
申请日：1988-07-15
Applicant: BASF AG
Inventor： FATH WOLFGANG DR , NACHTRAB RAINER , POLSTER RUDOLF DR
Abstract: A process for the conversion of a raw copper phthalocyanine into a pigmentary form by treatment of a finely divided raw copper phthalocyanine, whose crystallisation is interrupted and which is strongly agglomerated, with an organic solvent, in which the primary particle size, produced by ball-milling a raw copper phthalocyanine, is under 0.1 mu m, in which a suspension consisting of the organic solvent and the milled raw copper phthalocyanine (called a solvent-pigmentary suspension in the following) having pigment concentrations of 15 to 55% by weight and solvent concentrations of 15 to 85% by weight which can contain water from 0 to 30% by weight, is subjected to shear gradients between 1000 and 20,000 s over the course of a period of 2 to 1000 s, the energy uptake during the shearing being 0.01 to 0.2 kwh/kg of pigment put through, and in which, to discontinue formation in a defined manner, water is then metered into the solvent-pigmentary suspension in 0.1- to 10-fold the amount of the solvent and homogeneously mixed with the suspension.
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公开(公告)号：DE3626907A1
公开(公告)日：1988-02-11
申请号：DE3626907
申请日：1986-08-08
Applicant: BASF AG
Inventor： ZETTLER HANS DIETER , THIELE HEINO DR , NACHTRAB RAINER , SAPPOK REINHARD DR
Abstract: 1. A continuous process for the preparation of a poorly flowing flushed color from an aqueous pigment suspension (press cake) and a water-immiscible organic liquid which may or may not contain a binder, with the aid of an intensive mixer, wherein the aqueous pigment suspension (press cake) and the water-immiscible organic liquid (binder) or the mixture of the aqueous pigment suspension (press cake) and water-immiscible organic liquid (binder) are or is continuously fed to an intensive mixing and shearing zone, from 3 to 10% by volume of the mixture present in the said zone being subjected to a shear gradient of from 500 to 7500 S**-1 at any time and the residence time under the action of this shear gradient being from 0.5 to 60 seconds, and the remaining 97-90% by volume of the mixture are subjected to shear gradients which are lower by a factor of 10 or more, and the water phase is separated off from the water/flushed color mixture leaving the intensive mixing and shearing zone.
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