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Unsaturated polyester with low viscosity and application thereof

An unsaturated, low-viscosity technology, used in organic dyes, dyeing physical treatment, pigment slurry, etc., can solve the problems of shortened processing time, difficult to widely use, difficult to paste pigments, etc., to facilitate production operations, reduce production costs, The effect of shortening the processing time

Inactive Publication Date: 2013-06-26
CHANGZHOU HUARUN COMPOSITE MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the commonly used pigment paste carrier (CN101935484A, CN101935485A) has high viscosity, and only the three-roll process can be used to make the pigment powder evenly mixed, but the time required for each processing is usually 5-7 days, and the production efficiency is low , and cannot meet the market demand
In addition, the high viscosity of the existing carrier polyester not only makes the pigment paste difficult to construct and operate on site, but also has many limitations in molding, pultrusion, flow coating and hand lay-up, making it difficult to be widely used
[0005] In addition, compared with the three-roll process, the sand milling process can not only make the pigments more evenly distributed in the carrier, but also greatly shorten the processing time, but this process requires the carrier to have a lower viscosity, and there is no pigment paste carrier at present. meet the requirements of the process

Method used

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  • Unsaturated polyester with low viscosity and application thereof
  • Unsaturated polyester with low viscosity and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The preparation of embodiment 1 low viscosity unsaturated polyester

[0034] Weigh each component as listed in Table 1, and prepare various unsaturated polyesters according to the usual method for unsaturated polyesters, and measure the appearance, acid value, viscosity and molecular weight of the obtained polyesters. The amounts of the respective monomers in Table 1 are parts by weight.

[0035] It can be seen from Table 1 that dipropylene glycol is a key material to improve the wetting performance of polyester and pigment powder. With the increase of the amount of dipropylene glycol used, the wetting performance of polyester to pigment powder is also gradually improved; The ratio is the key factor determining the matching between the acid value and viscosity of the polyester. The higher the alkyd ratio is, the lower the acid value and viscosity of the polyester will be, and the molecular weight will decrease accordingly. The anti-sedimentation performance of the pigme...

Embodiment 2

[0040] The preparation of embodiment 2 pigment paste

[0041] According to the materials listed in Table 2 and their consumption (by weight), various pigment pastes are made, and the preparation method is as follows:

[0042] (1) Stir low-viscosity unsaturated polyester with defoamer and dispersant evenly, then add carbon black pigment powder and disperse evenly at a speed of 400-600 rpm.

[0043] (2) Place the uniformly dispersed pigment paste for more than 12 hours, and use the sanding process for sanding production.

[0044] As can be seen from Table 2, compared with the prior art (embodiment 4), the viscosity of the original carrier resin used is high without any auxiliary agent, and low viscosity unsaturated polyester, dispersant, leveling agent and defoamer are adopted These components have made technological progress. The pigment paste prepared by the combination of low-viscosity unsaturated polyester, dispersant and defoamer has achieved better technical effect. The...

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Abstract

The invention relates to unsaturated polyester with low viscosity. The polyester is mainly polymerized by 17-21 parts by weight of dihydric alcohol, 8-10 parts by weight of saturated binary acid and 3-3.5 parts by w eight of unsaturated binary acid, wherein the saturated binary acid is selected from one or more of oxalic acid, malonic acid, butanedioic acid, glutaric acid, adipic acid, pimelic acid, octanedioic acid, azelaic acid and sebacic acid, and the unsaturated binary acid is selected from one or more of butenedioic acid, phthalic acid, isophthalic acid and terephthalic acid. According to GB / T7193.1-2008 standard, the viscosity of unsaturated polyester is 0.60-1.00Pa.s, and the polyester can be used as a carrier for processing or manufacturing pigment paste by a sanding process, so that the processing time of the pigment paste is remarkably shortened, the production efficiency is improved, and the production cost is lowered.

Description

technical field [0001] The invention relates to an unsaturated polyester, in particular to an unsaturated polyester prepared by polymerization of multiple dihydric alcohols, which is used as a carrier for sand milling and manufacturing of pigment paste. Background technique [0002] Pigment paste is a paste obtained by uniformly blending unsaturated polyester with pigment powder. It is usually produced by three-roll method or sand milling method. Through the application of pigment paste (CN1363475A, CN1508370A), on the one hand, it can not only produce colorful products to add color to people's life, but also make up or cover some defects on the product surface. [0003] Chinese invention patent ZL200810243471.X discloses a preparation method of color paste carrier resin, the preparation steps are: the weight ratio of 110-190 parts of diethylene glycol, the weight ratio of 15-30 - 65 parts of maleic anhydride and 55-95 parts of phthalic anhydride in the weight ratio are pu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/676C09B67/20C09C3/04C09D17/00
Inventor 包柏青刘世仓施卫星
Owner CHANGZHOU HUARUN COMPOSITE MATERIALS
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