Polyester resin with excellent wear resistance and chemical resistance for powder and preparation method of polyester resin

A polyester resin and chemical resistance technology, used in powder coatings, polyester coatings, coatings, etc., can solve the problem of further improvement in wear resistance, and achieve improved chemical resistance and chemical resistance. Excellent, the effect of improving adhesion

Active Publication Date: 2020-09-11
安徽永利新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The technical effect of this patented innovation relates to an improved type of binder that combines good durability against abrasions or corrosive environments while also being resistant to solvents like alcohol. This new formulation allows for better performance on metals such as steel without losing its properties overtime due to exposure to these substances during storage periods.

Problems solved by technology

This patented technical problem addressed in this patents relates to improving the durability and appearance quality of clear plastic surfaces like those found on street furniture (such as lamps) without compromising their protection against harmful environmental factors. Existing methods involve adding various substances which may cause deteriorations overtime. There is also a desire to create a new type of material called Polyether Resorcinate™ that combines these benefits together while maintaining superior mechanical strength, weldability, waterproof qualities, and abrasion resistance.

Method used

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  • Polyester resin with excellent wear resistance and chemical resistance for powder and preparation method of polyester resin
  • Polyester resin with excellent wear resistance and chemical resistance for powder and preparation method of polyester resin
  • Polyester resin with excellent wear resistance and chemical resistance for powder and preparation method of polyester resin

Examples

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Effect test

Embodiment 1

[0060] A method for preparing a polyester resin for powder with excellent wear resistance and chemical resistance, comprising the following steps:

[0061] (1) Add N,N-dimethylacetamide and catalyst triisobutylaluminum into the reactor, start stirring and mix evenly, raise the temperature to 80°C and keep it warm, and feed nitrogen into the reactor, and then gradually drop Add 3,3-bis(chloromethyl)oxetane to carry out the polymerization reaction of small molecule chlorinated polyether, control the dripping within 3.5h, and then continue the heat preservation reaction for 3h;

[0062] (2) Add neopentyl glycol diglycidyl ether to the material in step (1) to participate in the copolymerization reaction, gradually raise the temperature from 80°C to 140°C at a heating rate of 10°C / h, and keep the temperature for 3h;

[0063] (3) when the epoxy equivalent of the mixture is greater than 1000g / mol, add neopentyl glycol, terephthalic acid, 1,4-naphthalene dicarboxylic acid and esterifi...

Embodiment 2

[0067] A method for preparing a polyester resin for powder with excellent wear resistance and chemical resistance, comprising the following steps:

[0068] (1) Add N,N-dimethylacetamide and catalyst triisobutylaluminum into the reactor, start stirring and mix evenly, raise the temperature to 70°C and keep it warm, and feed nitrogen into the reactor, and then gradually drop Add 3,3-bis(chloromethyl)oxetane to carry out the polymerization reaction of small molecule chlorinated polyether, control the dripping within 3 hours, and then continue the heat preservation reaction for 2.5 hours;

[0069] (2) Add neopentyl glycol diglycidyl ether to the material in step (1) to participate in the copolymerization reaction, gradually raise the temperature from 70°C to 130°C at a heating rate of 8°C / h, and keep the temperature for 2h;

[0070] (3) when the epoxy equivalent of the mixture is greater than 1000g / mol, add neopentyl glycol, terephthalic acid, 1,4-naphthalene dicarboxylic acid and...

Embodiment 3

[0074] A method for preparing a polyester resin for powder with excellent wear resistance and chemical resistance, comprising the following steps:

[0075] (1) Add N,N-dimethylacetamide and catalyst triisobutylaluminum into the reactor, start stirring and mix evenly, raise the temperature to 90°C and keep it warm, and feed nitrogen into the reactor, and then gradually drop Add 3,3-bis(chloromethyl)oxetane to carry out the polymerization reaction of small molecule chlorinated polyether, control the dripping within 4 hours, and then continue the heat preservation reaction for 3.5 hours;

[0076] (2) Add neopentyl glycol diglycidyl ether to the material in step (1) to participate in the copolymerization reaction, gradually raise the temperature from 90°C to 150°C at a heating rate of 12°C / h, and keep the temperature for 4h;

[0077] (3) when the epoxy equivalent of the mixture is greater than 1000g / mol, add neopentyl glycol, terephthalic acid, 1,4-naphthalene dicarboxylic acid an...

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Abstract

The invention belongs to the technical field of preparation of polyester resin, particularly relates to polyester resin with excellent wear resistance and chemical resistance for powder, and further relates to a preparation method of the polyester resin. The polyester resin provided by the invention is mainly prepared by polymerizing 3, 3-bis (chloromethyl) oxetane, neopentyl glycol diglycidyl ether, terephthalic acid, neopentyl glycol, tris (2-hydroxyethyl) isocyanurate, 1, 4-naphthalic acid and 5-nitroisophthalic acid. When the polyester resin obtained in the invention is used in a powder coating of an N, N, N', N'-tetra (2-hydroxyethyl) adipamide (HAA) curing system, a coating film with excellent wear resistance and chemical resistance can be obtained, and the resistance to 5% acetic acid, 5% sulfuric acid, 5% NaOH, methanol, ethyl acetate, acetone, xylene and acrylic acid can reach grade 5; after boiling in water for 2 hours, no change is caused; and the wear resistance reaches 3.8L/mu m or above.

Description

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Claims

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Application Information

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Owner 安徽永利新材料科技有限公司
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