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High-temperature resistant non-sticking coating

A non-stick coating, high temperature resistant technology, applied in polyester coatings, coatings, etc., can solve the problems affecting the application of non-stick coatings, low resin affinity, poor dispersion performance, etc., to achieve good non-stick performance, solvent resistance, etc. The effect of high performance and excellent weather resistance

Active Publication Date: 2011-06-01
HANGZHOU JIHUA POLYMER MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The heat-resistant pigments used in traditional coatings are mostly bright red, yellow, blue, green and other metal oxides and salts, which have the advantages of cheap price, various colors, and good heat resistance; but they have poor dispersion performance and resin affinity. low disadvantage
Moreover, traditional heat-resistant inorganic pigments contain heavy metals such as lead, cadmium, and chromium, which affect their application in non-stick coatings

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1) Synthesis of polyhydroxyl branched saturated polyester

[0031] a) Raw materials:

[0032] Neopentyl glycol 62.4g (0.6mol);

[0033] 2-methyl-1,3 propanediol 27g (0.3mol);

[0034] Trimethylolpropane 13.4g (0.1mol);

[0035] 132.8g (0.8mol) of isophthalic acid;

[0036] b) synthesis steps:

[0037] Add neopentyl glycol, 2-methyl-1,3 propanediol, and trimethylolpropane into a reactor equipped with heating, condensation, and nitrogen protection, and raise the temperature to 160°C under nitrogen protection to melt the polyol; then add Isophthalic acid and 0.4g tetrabutyl titanate were heated and kept at a temperature of 180°C for 4 hours, 220°C for 2 hours, and 240°C for 2 hours; finally cooled to 160°C, adding propylene glycol methyl Ether acetate was used to adjust the solid content to 60%, and cooled to room temperature to obtain 349 g of polyhydroxyl branched saturated polyester with a solid content of 60%.

[0038] c) Performance of polyhydroxyl branched satu...

Embodiment 2

[0070] 1) Synthesis of polyhydroxyl branched saturated polyester

[0071] a) Composition:

[0072] Neopentyl glycol 83.2g (0.8mol);

[0073] 13.5g (0.15mol) of 2-methyl-1,3 propanediol;

[0074] Trimethylolpropane 6.7g (0.05mol);

[0075] 149.4g (0.9mol) of isophthalic acid;

[0076] b) synthesis steps:

[0077] Add neopentyl glycol, 2-methyl-1,3 propanediol, and trimethylolpropane into a reactor equipped with heating, condensation, and nitrogen protection, and raise the temperature to 160°C under nitrogen protection to melt the polyol; then add Isophthalic acid and 0.4g tetrabutyl titanate; heated and kept at a temperature of 190°C for 4 hours, then heated to 230°C for 2.5 hours, and heated at 260°C for 2 hours; to reach the theoretical water output 91%, finally cooled to 160°C, adding propylene glycol methyl ether acetate to adjust the solid content to 60%, cooled to room temperature to obtain 347g of polyhydroxy branched saturated polyester with a solid content of 60%....

Embodiment 3

[0111] 1) Synthesis of polyhydroxyl branched saturated polyester

[0112] a) Composition:

[0113] Neopentyl glycol 57.2g (0.55mol);

[0114] 2-methyl-1,3 propanediol 31.5g (0.35mol);

[0115] Trimethylolpropane 13.4g (0.1mol);

[0116] Isophthalic acid 141.1g (0.85mol);

[0117] b) synthesis steps:

[0118] Add neopentyl glycol, 2-methyl-1,3 propanediol, and trimethylolpropane into a reactor equipped with heating, condensation, and nitrogen protection, and raise the temperature to 160°C under nitrogen protection to melt the polyol; then add Isophthalic acid and 0.4g of tetraisobutyl titanate are heated and heated at 200°C for 4 hours, 230°C for 2 hours, and 250°C for 2 hours; 95%, finally cooled to 160°C, adding propylene glycol methyl ether acetate to adjust the solid content to 60%, cooled to room temperature to obtain 352g of polyhydroxy branched saturated polyester with a solid content of 60%.

[0119] c) Performance:

[0120] The hydroxyl value of polyhydroxyl branc...

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Abstract

The invention discloses a high-temperature resistant non-sticking coating, and belongs to the field of organic macromolecular compounds. The non-sticking coating contains 50 to 80 weight parts of organic silicon modified saturated polyester, 10 to 30 weight parts of high-temperature resistant pigment and filler and 5 to 10 weight parts of high-boiling solvent; the organic silicon modified saturated polyester is obtained by reaction of polyhydroxy branched saturated polyester and organic silicon resin intermediate in an amount which is 0.3 to 1.0 times weight of the polyester, wherein the hydroxyl value of the polyester is 120 to 200mgKOH / g, and the weight-average molecular weight is 2,000 to 6,000; and the weight-average molecular weight of the organic silicon resin intermediate is 800 to 2,000, the alkoxy content is 2.5 to 15 percent, and the hydroxyl content is 3 to 20 percent. The high-temperature resistant non-sticking coating has good heat resistance, non-sticking performance, good metal adhesion and low heavy metal content and harmful substance content, accords with restriction of hazardous substances (RoHS) instructions and standards, and is an environmentally-friendly product.

Description

technical field [0001] The invention belongs to the field of organic macromolecular compounds, and relates to a macromolecular compound obtained by reacting only silicon and oxygen, in particular to an organosilicon resin. Background technique [0002] Non-stick coating has the advantages of low surface energy and high heat resistance. It is mainly coated on the surface of hardware products such as cooking utensils and electrical appliances, and plays functional roles such as protection, decoration, heat resistance, non-stick, and easy cleaning. The instantaneous use temperature of non-stick coatings can reach 380°C, and the long-term use temperature is between 180°C and 250°C. Therefore, the selected resin should have the characteristics of strong adhesion, excellent heat resistance, high hardness, and good mechanical properties. High temperature resistant resins mainly include organic fluorine high temperature resistant resins and silicone high temperature resistant resins...

Claims

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Application Information

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IPC IPC(8): C09D167/00C09D167/02C09D7/12C09D5/00
Inventor 刘海兵
Owner HANGZHOU JIHUA POLYMER MATERIAL CO LTD
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