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Preparation method of hyperbranched polyester modified organic silicon resin and coating comprising resin

A technology of hyperbranched polyester and silicone, applied in the direction of coating, etc., can solve the problems of unsatisfactory heat resistance, acid resistance and water resistance, and achieve good metal adhesion, good water resistance and solvent resistance, good acid resistance and water resistance performance effect

Active Publication Date: 2012-06-20
HANGZHOU JIHUA POLYMER MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology describes an improved type of material called hyperbranchized polysilane that improves its properties such as strength, durability against corrosion, moisture absorption, flexibility for use in coatings made from them. It also allows for better bond between different materials like metals without losing their effectiveness due to poor wetting characteristics.

Problems solved by technology

This patented technical problem addressed by this patents relates to improving the durability and bonding of different types of plastics without compromising their quality or functionality. Specifically, current methods involve modifying these plastes through expensive processes like crosslinking them under specific conditions while maintaining desired qualities.

Method used

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  • Preparation method of hyperbranched polyester modified organic silicon resin and coating comprising resin
  • Preparation method of hyperbranched polyester modified organic silicon resin and coating comprising resin
  • Preparation method of hyperbranched polyester modified organic silicon resin and coating comprising resin

Examples

Experimental program
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Effect test

Embodiment 1

[0038] 1) Carboxyl-terminated hyperbranched polyester

[0039] a) Composition:

[0040] Tribasic acid: 1,3,5-benzenetricarboxylic acid 105g (0.5mol); 1,2,4-benzenetricarboxylic acid 105g (0.5mol);

[0041] Diol: 1,4-cyclohexanediol 11.6g (0.1mol); Neopentyl glycol 83.2g (0.8mol); 1,6-hexanediol 11.8g (0.1mol)

[0042] b) synthesis steps:

[0043] Add tribasic acid and dibasic alcohol into a reactor equipped with heating, condensation and nitrogen protection, raise the temperature to 110°C under nitrogen protection, and keep it for 2 hours; heat it to 240°C at a heating rate of 20°C per hour, and keep it at 1.33kPa 4h; finally cooled to room temperature to obtain 185g carboxyl-terminated hyperbranched polyester.

[0044] c) Properties of carboxyl-terminated hyperbranched polyesters

[0045] The weight-average molecular weight of the carboxyl-terminated hyperbranched polyester was detected by gel permeation chromatography, and the result was 3900.

[0046] The acid value wa...

Embodiment 2

[0074] 1) Carboxyl-terminated hyperbranched polyester

[0075] a) Composition:

[0076] Tribasic acid: 294g (1.4mol) of 1,3,5-benzenetricarboxylic acid; 126g (0.6mol) of 1,2,4-benzenetricarboxylic acid;

[0077] Diol: 15.2g (0.2mol) of 1,3-propanediol; 41.6g (0.4mol) of neopentyl glycol; 36g (0.4mol) of 2-methyl-1,3-propanediol;

[0078] b) synthesis steps:

[0079] Add tribasic acid and dibasic alcohol into a reactor equipped with heating, condensation and nitrogen protection, raise the temperature to 110°C under nitrogen protection, and keep it for 2 hours; heat it to 240°C at a heating rate of 20°C per hour, and keep it at 0.66kPa 2h; finally cooled to room temperature to obtain 470g carboxyl-terminated hyperbranched polyester.

[0080] c) Properties of carboxyl-terminated hyperbranched polyesters

[0081] The weight-average molecular weight of the carboxyl-terminated hyperbranched polyester is detected by gel permeation chromatography, and the result is 1990.

[0082]...

Embodiment 3

[0105] 1) Carboxyl-terminated hyperbranched polyester

[0106] a) Composition:

[0107] Tribasic acid: 336g (1.6mol) of 1,2,4-benzenetricarboxylic acid;

[0108] Diol: 4.5g (0.05mol) of 1,4-butanediol; 5.9g (0.05mol) of 1,6-hexanediol; 93.6g (0.9mol) of neopentyl glycol

[0109] b) synthesis steps:

[0110] Add tribasic acid and dibasic alcohol into a reactor equipped with heating, condensation and nitrogen protection, raise the temperature to 110°C under nitrogen protection, and keep it for 2 hours; heat it to 240°C at a heating rate of 20°C per hour, and keep it at 0.78kPa 2.5h; finally cooled to room temperature to obtain 404g carboxyl-terminated hyperbranched polyester.

[0111] c) Properties of carboxyl-terminated hyperbranched polyesters

[0112] The weight-average molecular weight of the carboxyl-terminated hyperbranched polyester was detected by gel permeation chromatography, and the result was 2611.

[0113]The acid value was tested according to the method descri...

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Abstract

The invention relates to a preparation method of carboxyl-terminated hyperbranched polyester modified organic silicon resin. The method comprises the following steps of: after heating 40 to 60 weight percent of carboxyl-terminated hyperbranched polyester, 1 to 10 weight percent of 3-glycidoxypropyltrimethoxysilane, 30 to 50 weight percent of organic silicon resin and a cross linking catalyst of which the weight percent is 1 to 10 percent of that of the carboxyl-terminated hyperbranched polyester for 1 to 3 hours at the temperature of 110 to 130 DEG C, warming to the temperature of 150 to 180 DEG C and heating for 1 to 3 hours; and finally, reducing the temperature to the room temperature and adding an organic solvent to regulate the solid content to the range of 60 to 70 percent so as to obtain the carboxyl-terminated hyperbranched polyester modified organic silicon resin. The method combines the advantages of the carboxyl-terminated hyperbranched polyester with the organic silicon resin and excellent heat resistance, excellent metal adhesion, low surface energy, excellent boiling resistance and excellent acid resistance are obtained. The resin prepared by the method disclosed by the invention can be used for preparing a coating with high temperature resistance and low surface energy.

Description

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Claims

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Application Information

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Owner HANGZHOU JIHUA POLYMER MATERIAL CO LTD
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