摘要:
The invention provides novel pigment dispersants of the formula (I) in which Q is a radical of the formula (Ia) s is a number from 0.1 to 4.0 and n is a number from 0 to 2.0; and provides pigment preparations comprising an organic base pigment and a pigment dispersant of the formula (I).
摘要:
The invention provides novel pigment dispersants of the formula (I) in which is a radical of the formula (Ia) s is a number from 0.1 to 4.0 and n is a number from 0 to 2.0; and provides pigment preparations comprising an organic base pigment and a pigment dispersant of the formula (I).
摘要:
The invention provides novel pigment dispersants of the formula (I): in which Q is a radical of the formula (Ia): s is a number from 0.1 to 4.0 and n is a number from 0 to 2.0; and provides pigment preparations comprising an organic base pigment and a pigment dispersant of the formula (I).
摘要:
The invention provides a process for the fine division of pigments which comprises spraying a coarsely crystalline crude pigment and/or a poorly dispersible prepigment in suspension form through nozzles to a point of conjoint collision in a reactor chamber enclosed by a housing in a microjet reactor, a gas or an evaporating liquid being passed into the reactor chamber through an opening in the housing for the purpose of maintaining a gas atmosphere in the reactor chamber, and the resulting pigment suspension and the gas or the evaporated liquid being removed from the reactor through a further opening in the housing by means of overpressure on the gas entry side or underpressure on the product and gas exit side.
摘要:
The present invention provides a process for preparing transparent perylimide pigments of the formula (I) in which u is a number from 0 to 8 and, if u>0, E is a chlorine or bromine atom and, where u>1, may be a combination thereof, which comprises wet-grinding a crude perylimide pigment in a liquid medium in a stirred ballmill operated at a power density of from 1.0 kW per liter of milling space and at a stirrer tip speed of more than 12 m/s under the action of grinding media having a diameter of less than or equal to 0.9 mm, and isolating the resulting pigment.
摘要翻译:本发明提供制备式(I)的透明苝酰亚胺颜料的方法,其中0至8的数,如果u> 0,E是氯或溴原子,并且其中u> 1可以是 其组合包括在搅拌球磨机中在液体介质中湿法研磨粗己二酰亚胺颜料,该搅拌球磨机以每升研磨空间的功率密度为1.0kW,搅拌器末端速度大于12m / s 的直径小于或等于0.9mm的研磨介质,并分离所得颜料。
摘要:
Pigment preparations comprise a) at least one diketopyrrolopyrrole pigment, and b) at least one perylene pigment dispersant of the formula (I) and have advantageous rheological and coloristic properties.
摘要:
The invention relates to a method for producing pigment transparent preparations based on perylene-3,4,9,10-tetracarboxylic acid diimine of (XXX) formula, wherein u is a number between 0 and 8, when u>0; E is a chlorine or bromine atom and if u>1, possibly the combination of said atoms. The inventive method consists in wet grinding a perylimide raw pigment of the (xxx) formula in an aqueous liquid medium in the presence of at least one pigment dispersing agent of a perylene dispersing agent group and P.V. derived dispersing agents with the aid of a ball grinding mill operating at a maximum volume power of 1.0 kW per litre by the action of a grinder whose diameter is equal to or less than 5 mm, at a temperature equal to or higher than 50° C., and in isolating the such obtained pigment preparation.
摘要:
A process for preparing alcoholic solutions of alkali metal alkoxides. The process includes reacting an alkali metal with an alcohol in a microreactor wherein the microreactor provides laminer flow.
摘要:
Organic pigments are conditioned by introducing a liquid prepigment suspension into a miniaturized continuous reactor and thermally treating therein.
摘要:
The present invention relates to pigment dispersants of the formula (I) in which Z1 is a radical of the formula (Ia) —[X—Y]q—[X1—Y1]r—[X2—NH]sH (Ia) in which X, X1 and X2 are identical or different and are a branched or unbranched C2-C6-alkylene radical or a C5-C7-cycloalkylene radical which can be substituted by from 1 to 4 C1-C4-alkyl radicals, hydroxyl radicals, and/or by from 1 to 2 further C5-C7-cycloalkyl radicals; Y and Y1 are identical or different and are an NH—, —O— or N(C1-C6-alkyl) group, q is a number from 1 to 6, r and s independently of one another are a number from 0 to 6, but are not simultaneously zero; and Z is defined as Z1, Z2 or Z3, where Z2 is a radical of the formula (Ib) —[X—O]q1—[X1—O]qH (Ib) in which q1 is a number from 0 to 6, and Z3 is hydrogen, hydroxyl, amino or C1-C6-alkyl where the alkyl group can be substituted by from 1 to 4 substituents from the group consisting of Cl, Br, CN, OH, C6H5, carbamoyl, C1-C4-acyl, C1-C4-alkoxy and NR2R3, and to pigment preparations comprising organic base pigments and pigment dispersants, and to prepared pigment formulations prepared from the pigment preparations.