摘要:
The present invention is directed to a new 2,9-dichloroquinacridone in platelet form, a process for its preparation and its use for coloring high molecular weight organic material. The 2,9-dichloroquinacridone in platelet form has a length of 1 to 45 μm, a width of 0.1 to 20 μm and an average thickness of 0.01 to 5 μm and is characterized in that the hue-value h in remission is ≦31 and/or the lightness L* in transmission is ≧20 and/or a decreasing b* value and an increasing a* value from an illuminating and viewing angle (aspecular angle) 45°/110° (+25°) to 45°/90° (+45°).
摘要:
The present invention relates to a method of producing a granular formulation of colorants soluble in plastics, which method comprises suspending in water a filter cake obtained from preparation of the colorant, adding thereto from 0.1 to 5.0% by weight, calculated with respect to the weight of colorant, of a polyvinylpyrrolidone and, where appropriate, further adjuvants, and then drying the aqueous suspension to form granules, to the granular formulations obtainable according to that method, and to the use thereof in the production of colored plastics or colored polymeric particles.
摘要:
The solid dye preparations contain(a) 30-90 percent by weight of a water-soluble dye,(b) 1-25 percent by weight of an aliphatic aminocarboxylic acid or a salt thereof, and(c) 0-50 percent by weight of further additives.There is preferably at least 2% of anionic dispersing agent in the preparations.The preparations are particularly suitable for dyeing textile material made from cotton, polyacrylonitrile, wool or synthetic polyamide.
摘要:
The present invention relates to a method of producing a low-dust pigment composition, which comprises suspending a filter cake obtained from preparation of the pigment, or a solid pigment, in water, adding thereto from 0.1 to 6.0% by weight, based On the weight of the pigment composition, of an amphoteric surfactant and, where appropriate, further adjuvants, and then drying the aqueous suspension to form granules, to the pigment composition obtainable according to that method, and to the use thereof in the production of colored plastics or colored polymeric particles.
摘要:
The invention relates to a process for preparing organic pigment granules with a particular particle size wherein an organic pigment with a particle size of 0.01 to 10 &mgr;m is mixed with water, a C1-C4alcohol, a C3-C8ketone or a mixture thereof, a binder and ammonia or a C1-C3amine and an emulsifier. This mixture is pressed in a continuously operating apparatus through one or more apertures each having a size of 0.2-5.0 mm2, the apparatus consisting of at least one conveying device and a shaping section comprising the apertures, and being constructed, and operated with a throughput, such that the pressure in its shaping section does not exceed 10 bar. The granulated product is then dried at a temperature of −50 to 200° C. at atmospheric pressure or under reduced pressure. The invention also relates to pigment granules prepared by the process of the invention, with a particle size of 0.5 to 4 mm, wherein the pigment present essentially has a particle size from 0.01 to 10&mgr;m.
摘要:
There are disclosed solid dye formulations which comprise at least one anionic wool dye and optional additional components as well as a mixture of an anionic dispersant and an amphoteric surfactant. Such formulations are distinguished in particular by improved solubility in water.
摘要:
The present invention relates to a method of producing a granular formulation of colorants soluble in plastics, which method comprises suspending in water a filter cake obtained from preparation of the colorant, adding thereto from 0.1 to 5.0% by weight, calculated with respect to the weight of colorant, of a polyvinylpyrrolidone and, where appropriate, further adjuvants, and then drying the aqueous suspension to form granules, to the granular formulations obtainable according to that method, and to the use thereof in the production of colored plastics or colored polymeric particles.
摘要:
The present invention relates to a method of producing a low-dust pigment composition, which comprises suspending a filter cake obtained from preparation of the pigment, or a solid pigment, in water, adding thereto from 0.1 to 6.0% by weight, based On the weight of the pigment composition, of an amphoteric surfactant and, where appropriate, further adjuvants, and then drying the aqueous suspension to form granules, to the pigment composition obtainable according to that method, and to the use thereof in the production of colored plastics or colored polymeric particles.
摘要:
The invention relates to a process for granulating a free-flowing pulverulent organic pigment, which comprises treating the pigment at a temperature from 15 to 120.degree. C. with from 7 to 200% by weight, based on the dry weight of the pigment, of at least one gaseous inert substance which contains oxygen in its molecule, is liquid at 20.degree. C./1 bar and has a boiling point of not more than 150.degree. C.
摘要:
A process for the preparation of floating granules ("speckles") by spray drying a solution that contains one or more active substances, a carrier material and a foaming agent, and subsequently compacting the dried material so obtained.