Method for preparing environment-friendly solvent-based polyurethane ink

An environmentally friendly solvent and polyurethane technology, used in inks, household appliances, applications, etc., can solve the problems of toxicity, strong toxicity, strong odor, etc., and achieve the effect of high adhesion and high gloss

Inactive Publication Date: 2014-09-10
奥斯汀新材料(张家港)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional polyurethane inks mainly use toluene, methyl ethyl ketone, cyclohexanone, etc. as solvents. Among them, toluene is highly toxic, while methyl ethyl ketone has a strong residual odor and certain toxicity, which do not meet the requirements of environmental protection.

Method used

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  • Method for preparing environment-friendly solvent-based polyurethane ink

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] In a four-necked flask equipped with a stirrer, add maleic anhydride 200g, adipic acid (AA) 100g and methyl propylene glycol (MPD) 10g respectively, while heating 2 React under protection. When the internal temperature rises to about 130°C, water begins to flow out, and this temperature is maintained for 2-3 hours; the top temperature is controlled between 100-101°C, and then the catalyst is added when the temperature rises slowly to 200°C, and the temperature continues to rise to 220°C. Keep the temperature around for 5 hours, take a sample to test the acid value of 0.85, cool down, discharge, and obtain a light yellow transparent viscous liquid. Place the prepared non-crystalline polyester polyol in a vacuum drying oven at 120°C to dry for more than 6 hours, and add 280 g of dry non-crystalline polyester polyol to a three-necked flask equipped with an electric stirring device, a condensation device, and a thermometer , add 173g of diisocyanate dropwise, and react at r...

Embodiment 2

[0026] In the four-necked flask that stirrer is equipped with, add maleic anhydride 200g, adipic acid (AA) 85g and methylpropanediol (MPD) 12g respectively, while heating up, under N 2 React under protection. When the internal temperature rises to about 130°C, water begins to flow out, and this temperature is maintained for 2-3 hours; the top temperature is controlled between 100-101°C, and then the catalyst is added when the temperature rises slowly to 200°C, and the temperature continues to rise to 220°C. Keep the temperature around for 5 hours, take a sample to test the acid value of 0.8, cool down, and discharge the material to obtain a light yellow transparent viscous liquid. Place the obtained non-crystalline polyester polyol in a vacuum drying oven at 120°C to dry for more than 6 hours, and add 288 g of dry non-crystalline polyester polyol to a three-necked flask equipped with an electric stirring device, a condensation device, and a thermometer. , add 205g of diisocyan...

Embodiment 3

[0029] In a four-necked flask equipped with a stirrer, add maleic anhydride 250g, adipic acid (AA) 100g and methyl propylene glycol (MPD) 12.5g respectively, while heating up, under N 2 React under protection. When the internal temperature rises to about 130°C, water begins to flow out, and this temperature is maintained for 2-3 hours; the top temperature is controlled between 100-101°C, and then the catalyst is added when the temperature rises slowly to 200°C, and the temperature continues to rise to 220°C. Keep the temperature at left and right for 5 hours, take a sample to test the acid value of 0.79, cool down, and discharge the material to obtain a light yellow transparent viscous liquid. Place the prepared non-crystalline polyester polyol in a vacuum drying oven at 120°C to dry for more than 6 hours, and add 300 g of dry non-crystalline polyester polyol to a three-necked flask equipped with an electric stirring device, a condensation device, and a thermometer , add 185g ...

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Abstract

The invention discloses a method for preparing environment-friendly solvent-based polyurethane ink. The method comprises the steps of 1) adding butenedioic anhydride, adipic acid and methylpropanediol into a reaction kettle, under the protection of N2, raising the temperature and reacting, then adding stannous chloride, and continuously reacting to obtain non-crystallizable polyester polyol; 2) drying non-crystallizable polyester polyol prepared in step 1), adding to the reaction kettle, dropwise adding diisocyanate into the reaction kettle, reacting, then dropwise adding a catalyst, raising the temperature and continuously reacting to obtain a polyurethane prepolymer; 3) diluting the polyurethane prepolymer with ethyl acetate until the mass fraction is 10-20%, then adding a chain extender and a crosslinking agent, mixing and reacting, and then adding a mixed solvent of ethyl acetate and isopropyl alcohol to obtain environment-friendly solvent-based polyurethane ink. The environment-friendly solvent-based polyurethane ink has the advantages of yellowing resistance, high glossiness and high adhesion force, environmental friendliness and the like.

Description

technical field [0001] The invention relates to a preparation method of polyurethane ink, in particular to a preparation method of environment-friendly solvent-type polyurethane ink. Background technique [0002] Ink is generally composed of four parts: pigment, connecting resin, solvent and additives. The rheological properties, mechanical properties, optical properties and chemical resistance of ink mainly depend on the performance of connecting resin. Polyurethane is used as the binder resin of ink, which has the advantages of high mechanical strength, high bonding strength, good flexibility, solvent resistance, and easy processing, so its application in ink is becoming more and more extensive. [0003] Traditional polyurethane inks mainly use toluene, methyl ethyl ketone, cyclohexanone, etc. as solvents. Among them, toluene is highly toxic, while methyl ethyl ketone has a strong residual odor and certain toxicity, which do not meet the requirements of environmental prote...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/033C09D11/102C08G18/68C08G18/32
Inventor 杨廷廷艾玲汪泽恒陈海风
Owner 奥斯汀新材料(张家港)有限公司
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