A kind of production technology of hybrid polyester resin

A polyester resin and production process technology, applied in the production process field of mixed polyester resin, can solve the problems of few production methods, no production process, centralized production, etc., and achieves fast curing speed, improved acid and alkali resistance, convenient construction effect

Active Publication Date: 2016-01-20
滁州市全丰物资有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Mixed polyester resins have various functions, and polyester resins synthesized by selecting different raw materials have various functions. At present, the coatings for indoor applications on the market, especially polyester resins that are scratch-resistant, wear-resistant and have good curing effect There are fewer production methods, and there is no systematic production process for its centralized production

Method used

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  • A kind of production technology of hybrid polyester resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1: The concrete preparation method of the production of a kind of hybrid polyester resin of the present invention is as follows: Slurry configuration: the trimethylolpropane of 40mol, the propylene glycol of 30mol, the trimethylol propane of 10mol, the ethylene glycol acetate of 20mol and 100mol of p-hydroxybenzoic acid is put into the powder silo to configure mixed slurry, mixed and stirred for 1h; the molar mass ratio of trimethylolpropane to p-hydroxybenzoic acid during the slurry configuration process is 1:10;

[0022] Esterification: Add the prepared mixed slurry into the reaction kettle. The reaction kettle uses heat-conducting oil as the carrier. Under the temperature condition of 180°C, gradually increase the temperature and keep it warm for 1 hour every time the temperature rises by 10°C. When the temperature reaches 245°C , heat preservation reaction 2h;

[0023] Polycondensation: After the esterification reaction is completed, continue to keep the te...

Embodiment 2

[0031] Example 2: The concrete preparation method of the production of a kind of hybrid polyester resin of the present invention is as follows: Slurry configuration: the trimethylolpropane of 40mol, the propylene glycol of 30mol, the trimethylolpropane of 12mol, the ethylene glycol acetate of 20mol and 98mol of p-hydroxybenzoic acid is put into the powder hopper to configure mixed slurry, mixed and stirred for 1h; the molar mass ratio of trimethylolpropane to p-hydroxybenzoic acid in the slurry configuration process is 1.2:10;

[0032] Esterification: Add the prepared mixed slurry into the reaction kettle. The reaction kettle uses heat-conducting oil as the carrier. Under the temperature condition of 180°C, gradually increase the temperature and keep it warm for 1 hour every time the temperature rises by 10°C. When the temperature reaches 245°C , heat preservation reaction 3h;

[0033] Polycondensation: After the esterification reaction is completed, continue to keep the tem...

Embodiment 3

[0041] Example 3:The concrete preparation method of the production of a kind of hybrid polyester resin described in the present invention is as follows: Slurry configuration: the trimethylol propane of 40mol, the propylene glycol of 30mol, the trimethylolpropane of 11.5mol, the ethylene glycol acetate of 20mol Put the p-hydroxybenzoic acid of 100mol into the powder hopper to configure the mixed slurry, mix and stir for 1h; the molar mass ratio of the molar mass of trihydroxymethylpropane to the total substance in the slurry configuration process is 1.15:10;

[0042] Esterification: Add the prepared mixed slurry into the reaction kettle. The reaction kettle uses heat-conducting oil as the carrier. Under the temperature condition of 180°C, gradually increase the temperature and keep it warm for 1 hour every time the temperature rises by 10°C. When the temperature reaches 245°C , insulation reaction 2.5h;

[0043] Polycondensation: After the esterification reaction is completed...

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Abstract

The invention discloses a production process of mixed polyester resin. The process is as follows: ethylene glycol, propylene glycol, trihydroxymethylpropane, acetic acid with a molar ratio of 4:3:1-1.2:2:10 Ethylene glycol and p-hydroxybenzoic acid go through slurry configuration → esterification → polycondensation → vacuuming, dehydration → capping → filtration → cooling → crushing → packaging and storage to obtain a mixed polyester resin. The characteristics of the polyester resin The parameters are as follows: acid value 70±2mgKOH / g, softening point 95-110°C, viscosity 200-300 poise (165°C), curing condition 180°C / 8-10min, the mass ratio of polyester resin and epoxy resin in the finished product is 50:50; the present invention is mainly suitable for indoor coatings, especially for households, so that the coatings have the characteristics of wear resistance and scratch resistance, high hardness and fast curing speed, and improve the safety of decoration workers while ensuring the practical effect of coatings. The construction efficiency saves labor cost, and at the same time, the production process steps are simple, the waste pollution generated in the production process is less, it is convenient to clean up, and the effect is good for large-scale batch production in factories.

Description

technical field [0001] The invention relates to the field of additives for preparing thermosetting powder coatings, and relates to a production process of mixed polyester resins for interior coatings. Background technique [0002] Polyester resin generally does not form a film alone, and is mainly used to configure polyester-amino baking varnish, polyester polyurethane paint, polyester powder coating and unsaturated polyester paint. It belongs to medium and high-grade coatings, and the coating film has high gloss. , good fullness, strong weather resistance, and also has good adhesion, hardness, impact resistance, gloss retention, color retention, high temperature resistance to yellowing, etc. At the same time, due to the many synthetic monomers of polyester resin , the choice is large, the theory of macromolecule formula design is mature, and it can be modified by acrylic resin, epoxy resin, silicone resin and fluororesin. Therefore, the status of polyester resin in the coat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/91C08G63/60C08G63/85C08K5/13C08K5/526C08L67/02C08L67/04C09D167/02C09D167/04
Inventor 戈建伦徐军
Owner 滁州市全丰物资有限公司
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