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Organic-silicon-modified aqueous polyester resin and preparation method of same

A water-based polyester resin and silicone technology, applied in the field of polyester resin, can solve the problems of low film hardness, poor heat resistance, large solvent consumption, etc., and achieve the effect of high film hardness

Inactive Publication Date: 2015-08-12
ZHEJIANG PFLUON TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, in the domestic market, a large amount of oil-based silicone-modified polyester coatings are consumed every year, but no water-based coatings using water-based silicone-modified polyester resins as adhesives have appeared.
U.S. Patent US4035332 introduces a method for preparing water-based silicone-mo

Method used

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  • Organic-silicon-modified aqueous polyester resin and preparation method of same
  • Organic-silicon-modified aqueous polyester resin and preparation method of same
  • Organic-silicon-modified aqueous polyester resin and preparation method of same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of organosilicon modified waterborne polyester resin, proportioning by weight is as follows:

[0023]

[0024] Preparation process: Take 21 parts by weight of neopentyl glycol, 13 parts by weight of dimethylolpropionic acid, and 16 parts by weight of terephthalic acid, and heat up to 120°C to dissolve; protect with nitrogen, start stirring, and control the temperature at 185°C -240°C, until the theoretical weight part of condensate is collected. Cool down the temperature of the material to about 130°C, add 16 parts by weight of Dow Corning #3074 intermediate, 0.05 parts by weight of tetrabutyl titanate, control the temperature at 120°C-140°C for 1 hour; add 10 parts by weight of trimellitic anhydride, control The temperature is 120°C, react for 40min; stop heating, cool naturally to 90°C, add 20 parts by weight of γ-butyrolactone, 9 parts by weight of N,N-dimethylethanolamine, 45 parts by weight of water and stir for 15 minutes, mix After uniformity, the mate...

Embodiment 2

[0026] A kind of organosilicon modified waterborne polyester resin, proportioning by weight is as follows:

[0027]

[0028] Preparation process: Take 23 parts by weight of trimethylolpropane and 15 parts by weight of adipic acid, heat up to 120°C to dissolve; pass nitrogen protection, start stirring, control the temperature at 185°C-240°C, until the theoretical weight of condensation is collected liquid. Cool down the temperature of the material to about 130°C, add 30 parts by weight of Dow Corning #3074 intermediate, 0.05 parts by weight of tetrabutyl titanate, control the temperature at 120°C-140°C for 1 hour; add 9 parts by weight of trimellitic anhydride, control The temperature is 120°C, react for 40 minutes; stop heating, cool naturally to 90°C, add 20 parts by weight of γ-butyrolactone, 9 parts by weight of triethanolamine, and 45 parts by weight of water and stir for 15 minutes, mix well and discharge to obtain product.

Embodiment 3

[0030] A kind of organosilicon modified waterborne polyester resin, proportioning by weight is as follows:

[0031]

[0032]

[0033] Preparation process: Take 13 parts by weight of ethylene glycol, 11 parts by weight of trimethylolpropane, and 27 parts by weight of isophthalic acid, and heat up to 120°C to dissolve; protect with nitrogen, start stirring, and control the temperature at 185°C-240°C °C until the theoretical weight part of condensate is collected. Cool down the temperature of the material to about 130°C, add 20 parts by weight of Dow Corning #3074 intermediate, 0.04 parts by weight of tetrabutyl titanate, control the temperature at 120°C-140°C for 1 hour; add 8 parts by weight of trimellitic anhydride, control The temperature is 120°C, react for 40min; stop heating, cool naturally to 90°C, add 20 parts by weight of γ-butyrolactone, 7 parts by weight of N,N-dimethylethanolamine, 45 parts by weight of water and stir for 15 minutes, mix After uniformity, the ...

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Abstract

The invention relates to polyester resin and especially relates to an organic-silicon-modified aqueous polyester resin which is mainly prepared from following raw materials, by weight: 14-25 parts of a polyol, 10-15 parts of binary acid/binary acid anhydride/binary acid ester, 7-25 parts of an organic silicon intermediate, 0.007-0.02 parts of a catalyst, 10-15 parts of anhydride, 10-20 parts of a polar solvent, 10-15 parts of an amine compound and 20-35 parts of water. The rganic-silicon-modified aqueous polyester resin is 4H in low-temperature paint film hardness and is HB in high-temperature paint film hardness, is free of yellowing after a heat resistance test of baking for 8 h at 280 DEG C and is 86-95% in glossiness retention rate after water boiling for 30 min. The hardness of the aqueous polyester resin reaches and even is better than that of some oily organic-silicon-modified polyester resin in the prior art, and the water boiling resistance of the aqueous polyester resin is better than that of a present organic-silicon-modified aqueous polyester resin on market.

Description

technical field [0001] The invention relates to a polyester resin, in particular to an organosilicon-modified water-based polyester resin and a preparation method thereof. Background technique [0002] Silicone modified polyester resin is widely used in heat-resistant coatings and non-stick coatings because of its good adhesion, heat resistance, water resistance, gloss and hardness. With the improvement of environmental protection requirements, solvent-based coatings will gradually be replaced by water-based coatings and powder coatings. At present, in the domestic market, a large amount of oil-based silicone-modified polyester coatings are consumed every year, but there are no water-based coatings using water-based silicone-modified polyester resins as adhesives. US Patent No. 4,035,332 introduces a method for preparing a water-based silicone-modified polyester. This patented product has disadvantages such as poor heat resistance and low film hardness. The Chinese patent ...

Claims

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Application Information

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IPC IPC(8): C08G63/695C08G63/78C09D167/00
Inventor 史海兵史航
Owner ZHEJIANG PFLUON TECH CO LTD
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