Powdery pigment preparations for dyeing films

A kind of pigment preparation and powdery technology, which is applied in the direction of organic dyes, pigment paste, thin material treatment, etc., can solve the problem of not being able to prevent embrittlement spots of the film, and achieve the effect of high pigment concentration

Inactive Publication Date: 2005-11-09
CLARIANT PROD DEUT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Professionals face particular problems in the dyeing of PMMA films, as usual pigment preparations may or may not prevent film embrittlement or mottle in the dyed film

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] In a dispersion kneader, 225 parts of acrylate resin (composed of 58 mol% ethyl methacrylate, 39 mol% n-butyl methacrylate and 3 mol% methacrylic acid; molecular weight 59000g / mol) and 9 parts epoxy Soybean oil is mixed at room temperature. Then, introduce steam (130°C) to plasticize the material. Into the plastic material, knead 225 parts of C.I. Pigment Blue 15:1 one by one within 15 minutes, and knead for another 30 minutes at 110°C. Then, the material is crushed under the condition of adding a certain amount of water, the kneader is turned off, and the brittle material is crushed in the kneader after cooling. It is then ground in a mechanical mill. A powdered pigment preparation is formed.

Embodiment 2

[0036] In a dispersion kneader, 225 parts of acrylate resin (composed of 60 mol% ethyl methacrylate, 38 mol% n-butyl methacrylate and 2 mol% methacrylic acid; molecular weight 60000g / mol) and 9 parts epoxy Soybean oil is mixed at room temperature. Then, introduce steam (130°C) to plasticize the material. Into the plastic mass, knead 225 parts of C.I. Pigment Violet 19 in portions within 15 minutes, and knead for another 30 minutes at 110°C. Then, the material is crushed under the condition of adding a certain amount of water, the kneader is turned off, and the brittle material is crushed in the kneader after cooling. It is then ground in a mechanical mill. A powdered pigment preparation is formed.

Embodiment 3

[0038] In a dispersion kneader, 225 parts of acrylate resin (composed of 56 mol% ethyl methacrylate, 40 mol% n-butyl methacrylate and 4 mol% methacrylic acid; molecular weight 60000g / mol) and 9 parts of fatty alcohol The ethoxylates were mixed at room temperature. Then, introduce steam (130°C) to plasticize the material. Into the plastic material, knead 225 parts of C.I. Pigment Red 254 one by one within 20 minutes, and knead for another 30 minutes at 110°C. Then, the material is crushed under the condition of adding a certain amount of water, the kneader is turned off, and the brittle material is crushed in the kneader after cooling. It is then ground in a mechanical mill. A powdered pigment preparation is formed.

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PUM

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Abstract

The invention relates to a powdery pigment preparation containing a pigment which is dispersed in an acrylate resin and which is characterized in that the acrylate resin has an average molar mass Mw ranging from 40000 to 80000 g / mol and is a copolymer comprised of 50 to 65 mol % ethyl methacrylate, of 30 to 45 mol % butyl methacrylate, and of 0.5 to 5 mol % methacrylic acid. The powdery pigment preparation can be used for dying films, particularly those made of polymethyl methacrylate. The films do not have any specks nor holes.

Description

technical field [0001] The invention relates to a powdered pigment preparation which is especially suitable for dyeing polymethyl methacrylate (PMMA) films. Background technique [0002] EP-A-0 718 327 describes poly(meth)acrylate copolymers as pigment dispersants in plastics materials for the production of extrusion moldings. [0003] US-A-4 948 5 46 describes a method for the production of PMMA flexible panels dyed with inorganic pigments. In this method, the pigment is used in certain acrylic copolymers in the form of a liquid or paste dispersion. [0004] Professionals face particular problems with regard to the dyeing of PMMA films, since conventional pigment preparations may or may not prevent film embrittlement or mottle in the dyed film. Contents of the invention [0005] The task of the present invention was to find a powdery pigment preparation suitable for dyeing PMMA films without spots or holes in the film formed. [0006] It was found that the following pi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03G9/09C08F220/18C08J3/22C09B67/00C09B67/20C09D7/12C09D11/02C09D17/00C09D201/00G03G9/087
CPCC08J3/226C09B67/0061C08J2433/00Y10T428/31507C09B67/008
Inventor R·巴兰特D·贝克H·奥雷尔
Owner CLARIANT PROD DEUT GMBH
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