Preparation method of sulfonate type photocurable waterborne polyurethane

A water-based polyurethane, sulfonate type technology, applied in the field of coatings and adhesives, can solve the problems of not meeting the development requirements of green chemistry, large solvent consumption, and high difficulty in operation, achieve good hydrophilicity and photocurability, and improve hydrophilicity. , Excellent scratch resistance

Inactive Publication Date: 2019-04-05
江西高信前沿科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, these light-cured water-based polyurethane emulsions have complicated processes, high costs, large amounts of solvents, high difficulty in operation, and low solid content, which do not meet the requirements of green chemical development.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] Raw materials used are calculated as follows by weight ratio:

[0081] Photosensitive macromonomer part:

[0082] Glycidyl methacrylate (GMA) 67.32

[0083] Glutaric acid 31.27

[0084] Catalyst 0.71

[0085] Inhibitor 0.70.

[0086] Sulfonate type photocurable waterborne polyurethane part:

[0087] Photosensitive macromonomer 2.10

[0088] Polycaprolactone diol 13.99

[0089] 1,4-Cyclohexanedimethanol 1.81

[0090] Dimethylolbutyric acid 0.62

[0091] BY3306 4.10

[0092] Isophorone diisocyanate 12.75

[0093] Triethylamine 0.40

[0094] Acetone 17.47

[0095] Ethylenediamine 0.26

[0096] Di-n-butyltin dilaurate 0.10

[0097] Deionized water 46.40.

[0098] 1) Add glutaric acid, catalyst, and polymerization inhibitor to the reactor, raise the temperature to 120°C, add glycidyl methacrylate (GMA) dropwise, and keep warm until the end of the theoretical acid value to synthesize a photosensitive macromonomer.

[0099] 2) Add photosensitive macromonomer, po...

Embodiment 2

[0107] The raw materials used are calculated in parts by weight as

[0108] Photosensitive monomer part:

[0109] Glycidyl methacrylate (GMA) 33.40

[0110] Dimer acid 64.25

[0111] Catalyst 1.17

[0112] Inhibitors 1.18.

[0113] Sulfonate type photocurable waterborne polyurethane part:

[0114] Photosensitive monomer 8.15

[0115] Polypropylene carbonate diol 5.51

[0116] Trimethylolpropane 1.96

[0117] Dimethylolpropionic acid 0.67

[0118] Sodium 1,4-butanediol-2-sulfonate 3.44

[0119] Toluene diisocyanate 9.83

[0120] Triethylamine 0.45

[0121] Acetone 23.64

[0122] Ethylenediamine 0.60

[0123] Di-n-butyltin dilaurate 0.15

[0124] Deionized water 45.60.

[0125] 1) Add dimer acid, catalyst, and polymerization inhibitor to the reactor, raise the temperature to 120°C, add glycidyl methacrylate (GMA) dropwise, and keep warm until the end of the theoretical acid value to synthesize a photosensitive macromonomer.

[0126] 2) Add photosensitive macromono...

Embodiment 3

[0134] Wherein, the raw materials used are counted as

[0135] Photosensitive macromonomer part:

[0136] Glycidyl methacrylate (GMA) 58.80

[0137] Azelaic acid 38.92

[0138] Catalyst 1.14

[0139] Inhibitors 1.14.

[0140] Sulfonate type light curing waterborne polyurethane part:

[0141] Photosensitive macromonomer 4.47

[0142] Poly(Neopentyl Glycol Adipate) 8.26

[0143] 1,4-Cyclohexanedimethanol 1.94

[0144] Dimethylolbutyric acid 0.66

[0145] Sodium 1,4-butanediol-2-sulfonate 6.94

[0146] Isophorone diisocyanate 13.64

[0147] Triethylamine 0.45

[0148] Acetone 16.04

[0149] m-Xylylenediamine 0.80

[0150] Di-n-butyltin dilaurate 0.10

[0151] Deionized water 46.70.

[0152] 1) Add azelaic acid, catalyst, and polymerization inhibitor into the reactor, raise the temperature to 120°C, add glycidyl methacrylate (GMA) dropwise, and keep warm until the end of the theoretical acid value to synthesize a photosensitive macromonomer.

[0153] 2) Photosensitive...

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Abstract

The invention discloses a preparation method of a sulfonate type photocurable waterborne polyurethane. The preparation method of the sulfonate type photocurable waterborne polyurethane is characterized by heating binary acid, catalysts and polymerization inhibitor inside a reactor to 120 DEG C, dropwise adding glycidyl methacrylate (GMA), and performing thermostatic reaction at 120 DEG C until reaching a theoretical acid value end point to synthesize photosensitive macromonomers containing unsaturated double bonds; dewatering the photosensitive macromonomers, polyester glycol, hydrophilic monomers, micromolecular polyhydric alcohols and sulfonate monomers inside a reactor for 1 h; cooling down to 50-70 DEG C, adding in acetone and catalysts, slowly dropwise adding diisocyanate into the reactor for thermostatic reaction, and stopping reaction when reaching a theoretical end point; cooling down to 50 DEG C for neutralization for 30-40 min; adjusting viscosity with acetone, adding in deionized water and chain extender at 50 DEG C for reaction for 30-40 min; at 60-70 DEG C, reducing the pressure to remove the acetone to obtain the colorless and transparent or translucent and light bluesulfonate type photocurable waterborne polyurethane.

Description

technical field [0001] The invention belongs to the technical field of coatings and adhesives, and in particular relates to a preparation method of sulfonate-type light-cured waterborne polyurethane. Background technique [0002] Light-curing paint is an environmentally friendly and energy-saving paint developed by Bayer Corporation of Germany in the late 1960s. my country has entered the field of light-curing coatings since the 1980s. With the increase of people's awareness of environmental protection, the performance of light-cured coatings has been continuously enhanced, the application fields have been continuously expanded, and the output has increased rapidly. The water-based light-curable polyurethane system has the advantages of both light-curable resin and water-based polyurethane, with fast curing speed, high hardness, high gloss, and good water / solvent resistance. It can be widely used in metal anticorrosion, leather finishing agent, wood lacquer and fiber surfa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/67C08G18/66C08G18/42C08G18/32C08G18/44C08G18/38C08G18/34C08G18/08
CPCC08G18/3206C08G18/3212C08G18/3228C08G18/324C08G18/348C08G18/3855C08G18/4238C08G18/4277C08G18/44C08G18/6651C08G18/6659C08G18/675C08G18/0828
Inventor 闫福安赵成罡袁维金
Owner 江西高信前沿科技有限公司
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