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A kind of high temperature resistant water-based transfer coating and preparation method thereof

A technology of transfer coating and high temperature resistance, which is applied in the direction of fireproof coating, polyurea/polyurethane coating, coating, etc., and can solve the problems of unsatisfactory performance of water-based polyurethane transfer coating, stripping performance of water-based polyurethane transfer coating, high temperature resistance, and folding resistance Unable to meet the requirements, imperfect research on water-based polyurethane transfer coatings, etc., to achieve the effects of low peel strength, excellent high temperature resistance, and good peel performance

Active Publication Date: 2019-04-19
山东奥德美高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, due to the incomplete research on water-based polyurethane transfer coatings, there are still many unsatisfactory performances of water-based polyurethane transfer coatings, such as the peelability, high temperature resistance, and folding resistance of water-based polyurethane transfer coatings after film formation.

Method used

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  • A kind of high temperature resistant water-based transfer coating and preparation method thereof
  • A kind of high temperature resistant water-based transfer coating and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The preparation method is as follows:

[0032] 1. Prepare materials according to the following components and proportions:

[0033] 30KG of polyester diol with a molecular weight of 1000, 30KG of polyester diol with a molecular weight of 3000, 19KG of polyether diol with a molecular weight of 1000, 21KG of polyether diol with a molecular weight of 3000, and 1KG of trimethylolpropane , 60KG of hydrogenated phenylmethane diisocyanate, 5KG of dimethylolpropionic acid, 6KG of 1,4-cyclohexanedimethanol, 0.5kg of isophorone diamine, 2L of solvent N-methylpyrrolidone and acetone.

[0034] 2. Raw material mixing, heating and dehydration

[0035] Measure the polyester diol and polyether diol, add the chain extender TMP, stir the three evenly and heat to 120°C, dehydrate under vacuum for 1h, and then cool down to 80°C.

[0036] 3. Prepolymer synthesis:

[0037] Add hydrogenated phenylmethane diisocyanate into polyester diol and polyether diol, control the temperature at 95°C, ...

Embodiment 2

[0042] Obtained as follows:

[0043] 1. Prepare materials according to the following components and proportions:

[0044] Polyester diol with a molecular weight of 1000 is 30KG, polyester diol with a molecular weight of 3000 is 30KG, polyether diol with a molecular weight of 1000 is 23.8KG, polyether diol with a molecular weight of 3000 is 26.2KG, TMP 2KG, hydrogenated Phenylmethane diisocyanate 120KG, dimethylol propionic acid 7.5KG, 1,4-butanediol 5KG, isophorone diamine 0.5kg, solvent N-methylpyrrolidone, acetone 2L each

[0045] 2. Raw material mixing, heating and dehydration

[0046] Measure polyester diol and polyether diol PTMG, add chain extender TMP, stir and heat the three evenly to 120°C, dehydrate under vacuum for 1 hour, and then cool down to 90°C.

[0047] 3. Prepolymer synthesis:

[0048] Add hydrogenated phenylmethane diisocyanate into polyester diol and polyether diol, control the temperature at 80-95°C, stir and react for 2 hours, then add hydrophilic agen...

Embodiment 3

[0053] Obtained as follows:

[0054] 1. Prepare materials according to the following components and ratios

[0055] 35KG of polyester diol with molecular weight of 1000, 35KG of polyester diol with molecular weight of 3000, 26KG of polyether diol with molecular weight of 1000, 29KG of polyether diol with molecular weight of 3000, TMP 2.5KG, hydrogenated benzene Methane diisocyanate (H12MDI) 95KG, dimethylolpropionic acid 8KG, 1,4-cyclohexanedimethanol 8KG, isophorone diamine 0.5kg, solvent N-methylpyrrolidone, acetone 2L each.

[0056] 2. Raw material mixing, heating and dehydration

[0057] Measure polyester diol and polyether diol, add chain extender TMP, stir the three evenly and heat to 120°C, dehydrate under vacuum for 1h, then cool down to 90°C.

[0058] 3. Prepolymer synthesis

[0059]Add hydrogenated phenylmethane diisocyanate (H12MDI) into polyester diol and polyether diol, control the temperature at 80°C, stir and react for 2 hours, then add hydrophilic agent dime...

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Abstract

The invention relates to a high-temperature-resistant water-based transfer coating and a preparation method thereof. The coating comprises, by wt%, 24.5-28% of polyether diols, 30-37% of polyester glycol, 28-37% of hydrogenated phenyl methane diisocyanate, 3-3.5% of hydrophilic agent, 2-10% of chain extender, 1-3% of neutralizer and an appropriate amount of solvent. A preparation process comprises the steps of material preparation, raw material hybrid heating dehydration, prepolymer synthesis, prepolymer neutralization dispersion and chain extension desolvation emulsification and the like. Compared with the prior art, the coating has excellent stripping performance and is resistant to high temperature; and particularly, after film forming, the coating can resist a high temperature of 180 DEG C and does not become soft or turn white.

Description

technical field [0001] The invention relates to a high-temperature-resistant water-based transfer coating and a preparation method thereof, in particular to a water-based polyurethane transfer coating with good peelability and suitable for gravure printing and offset printing and a preparation method thereof. Background technique [0002] Waterborne polyurethane uses water as the dispersion medium. It has the advantages of non-toxic, non-flammable, non-polluting, energy-saving, safe and reliable, and meets the development requirements of green industry. [0003] However, due to the incomplete research on water-based polyurethane transfer coatings, there are still many unsatisfactory performances of water-based polyurethane transfer coatings, such as the peelability, high temperature resistance, and folding resistance of water-based polyurethane transfer coatings after film formation. . Contents of the invention [0004] The purpose of the present invention is to overcome ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D175/04C08G18/12C08G18/66C08G18/40C08G18/34C08G18/32C08G18/48C08G18/08
CPCC08G18/0823C08G18/12C08G18/3206C08G18/348C08G18/4018C08G18/4825C08G18/6625C09D5/18C09D175/04C08G18/3234
Inventor 董其兴孙晓泽
Owner 山东奥德美高分子材料有限公司