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Solid formaldehyde-free pigment preparations

A pigment preparation, formaldehyde technology, used in adhesives, organic dyes, fibrous fillers, etc.

Inactive Publication Date: 2008-05-07
GOLDSCHMIDT CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of citrate, acetyl citrate or tartaric acid can cause problems when grinding pigments

Method used

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  • Solid formaldehyde-free pigment preparations

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0068] 1) Preparation of carbonyl hydrogenated ketone / aldehyde resins (not of the invention)

[0069] 1200g of acetophenone, 220g of methanol, 0.3g of benzyltributylammonium chloride and 360g of 30% formaldehyde aqueous solution were preset and stirred evenly. Then 32 g of 25% aqueous caustic soda were added with stirring. Then 655 g of a 30% aqueous formaldehyde solution were added with stirring at 80 to 85° C. over 90 min. After stirring for 5 h at reflux temperature the stirrer was switched off and the aqueous phase was separated from the resin phase. The crude product was washed with aqueous acetic acid until a molten sample of the resin was clear. The resin is then dried by distillation.

[0070] 1270 g of a slightly yellowish resin were obtained. The resin is clear and brittle and has a melting point of 72°C. It is soluble in, for example, acetates such as butyl acetate and ethyl acetate, soluble in aromatics such as toluene and xylene, and insoluble in ethanol.

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PUM

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Abstract

The invention relates to a solid paint preparation almost without formaldehyde which consists of at least one paint and a resin, relating the production method and the application in a paint, a japanning, a blinder, an ink or a printing ink.

Description

technical field [0001] The invention relates to a solid pigment preparation which is composed of at least one pigment and a resin and is practically free of formaldehyde, a process for its preparation and its use in coatings, varnishes, adhesives, inks or printing inks. Background technique [0002] Such solid pigment preparations are used in coating materials such as paints, varnishes, adhesives, inks or printing inks for coating objects consisting, for example, of metals and plastics. These coating compositions are suitable for all customary coating methods applicable in the modern coating of metals and plastics as well as in the printing ink industry, such as spraying, electrostatic spraying and printing with various printing methods. [0003] In general, colored coating materials are produced by first preparing a liquid pigment preparation and then applying it with a base coat. [0004] The fillers and pigments are dispersed in a liquid medium in the preparation of pigm...

Claims

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Application Information

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IPC IPC(8): C09B67/42C09D7/12C09D11/02C09J11/00
CPCC09B67/0063C08J3/205C09B67/0013C09C3/08C09C1/14C09C1/0096C09C1/12C09C1/0006C09C1/0003C09C1/20C09C1/346C09C1/043C09C1/48
Inventor A·温宁P·邓金杰
Owner GOLDSCHMIDT CHEM CORP
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