Modified pigments and use thereof

a technology of organic pigments and pigments, applied in the field of modified organic pigments, can solve the problems of introducing extraneous substances into the product, forming sediment, and particles of small diameter have a particularly high tendency to agglomerate, and achieve the effect of low molecular weigh

Inactive Publication Date: 2019-01-31
EVONIK OPERATIONS GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0015]1. Modified organic pigments obtainable by reacting the pigments during the pigment synthesis with at least one interface-active compound, where the interface-active compounds are selected such that they are within a three-dimensional Hansen space, where the Hansen space is determined by three coordinates, called the Hansen solubility parameters (HSPs), D=18.21, P=8.44, H=13.16 with a radius of 6.7 units about the cen

Problems solved by technology

In the dry and wet grinding methods, use of grinding bodies results in abrasion and hence introduction of extraneous substances into the product.
However, particles of small diameter have a particularly high tendency to agglomerate and therefore have to be stabilized.
Recombination of the primary particles and aggregates can lead to

Method used

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  • Modified pigments and use thereof
  • Modified pigments and use thereof
  • Modified pigments and use thereof

Examples

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examples

[0084]The subject-matter of the invention will be described by way of example below, without any intention that the invention be restricted to these illustrative embodiments.

[0085]Measurement Methods:

[0086]Parameters or measurements are preferably determined using the methods described hereinbelow. In particular, these methods were used in the examples of the present intellectual property right.

[0087]Application

[0088]The tinted varnishes were applied with a spiral coating bar (100 μm, from TQC GmbH) to test charts (for example from Leneta, Opacity charts, Form 2A).

[0089]In order to assess the performance of the solids with regard to evolution of colour intensity and ease of dispersion, the colour intensity was obtained after drying at 50° C. for 24 h was subjected to a colour measurement.

[0090]Colorimetry

[0091]The colour of the paint surfaces was measured with an X-Rite instrument (model: X-Rite SP 60). The values known as the L*a*b* values according to the CIE-Lab system (CIE=Commi...

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Abstract

A modified organic pigment can be used to make a coating composition, such as a paint, a varnish, or a printing ink. The modified organic pigment is obtained by reacting the pigments during the pigment synthesis with at least one interface-active compound, where the interface-active compound is a compound within a three-dimensional Hansen space determined by three coordinates, Hansen solubility parameters (HSPs), D=18.21, P=8.44, H=13.16 with a radius of 6.7 units about a center of the three-dimensional Hansen space, determined with the aid of the HSPiP software, version 5.0.0.4.

Description

BACKGROUND OF THE INVENTIONFIELD OF THE INVENTION[0001]The present invention relates to modified organic pigments, and to the production and use thereof in paints, varnishes, printing inks and other coating materials.DISCUSSION OF THE BACKGROUND[0002]Pigments are colouring substances present in insoluble dispersed form in the application medium. Application media are, for example, organic solvents, paints, varnishes, pigment preparations, printing inks and other coatings in which the pigment is incorporated. Typically, the crude pigments formed in the synthesis are ground or comminuted. There are various known fine distribution methods for conversion of a crude pigment to pigment or pre-pigment form, called dry grinding and wet grinding methods. In the dry and wet grinding methods, use of grinding bodies results in abrasion and hence introduction of extraneous substances into the product.[0003]In other known processes for production of particulate pigments, the pulverulent pigments ...

Claims

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Application Information

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IPC IPC(8): C09B67/18C09D133/06C09D175/04C09D7/63C09B67/06
CPCC09B67/002C09D133/06C09D175/04C09D7/63C09B67/0003C09B67/0001C09B67/0017C09D11/037C09B67/0089C09B67/009
Inventor CAVALEIRO, PEDROBOUWMAN, MATTHIASSENTER, PASCALFAVRESSE, PHILIPPE
Owner EVONIK OPERATIONS GMBH
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