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Hydrophilic UV (Ultraviolet) coating hardness assistant and preparation method thereof

A hydrophilic and coating technology, applied in the direction of coating, can solve the problems of unstable emulsion performance, low film hardness and high viscosity, and achieve good results, improve acid and alkali resistance, and improve water solubility.

Active Publication Date: 2014-08-13
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology allows for use of highly functionalized materials called Hyperbranched Molecular (HBM) particles instead of traditional chemicals like acrylic monomers or epoxy compounds used traditionally. These HBM particles have specific properties such as being long-lastingly attached onto other small chains on these polymer backbones without losing their original structure. They can be easily mixed together during production process making them easier to handle compared to regular chemistry methods. Additionally, they improve the quality control over manufacturing processes while reducing costs associated therewith. Overall, this new method provides technical benefits including improved performance and wider applicability than previous techniques.

Problems solved by technology

This patented technical solution describes how current methods for creating multi functional water-borne uv ray (UVR) photopolymerizable compositions have limitations due to their lack of flexibility or ability to effectively dissolve certain chemical compounds during manufacturing processes.

Method used

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  • Hydrophilic UV (Ultraviolet) coating hardness assistant and preparation method thereof
  • Hydrophilic UV (Ultraviolet) coating hardness assistant and preparation method thereof
  • Hydrophilic UV (Ultraviolet) coating hardness assistant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Table 1-1 Synthetic raw materials of prepolymer Ⅰ

[0032] name

[0033] Remove water from polyethylene glycol monomethyl ether and react with IPDI with catalyst DBTL at 70°C for 2.5 hours, dissolve hyperbranched bis-MPA polyester-8-hydroxyl-1 generation polymer with DMSO and add to the reaction system In the process, the temperature was raised to 75°C, and after 5 hours of reaction, prepolymer I was prepared for use.

[0034] Table 1-2 Synthetic raw materials of two-tailed four-functional hydrophilic UV coating hardness additives

[0035] name

[0036] Dissolve hydroxyethyl acrylate in DMSO, add dropwise reaction with IPDI for 4 hours at ice-water bath temperature, raise the temperature to 30°C and react for 12 hours to obtain the intermediate product, add prepolymer I to the intermediate product, raise the temperature to 70°C, and stir , react for 6 hours, vacuumize, keep the vacuum degree of the reaction system at 0.09MPa, control the temperature...

Embodiment 2

[0038] Table 2-1 Synthetic raw materials of prepolymer Ⅰ

[0039] name

[0040] Remove water from polyethylene glycol monomethyl ether and react with IPDI with catalyst DBTL at 70°C for 2.5 hours, dissolve hyperbranched bis-MPA polyester-8-amino-1 generation polymer with THF and add to the reaction system In the process, the temperature was raised to 75°C, and after 5 hours of reaction, prepolymer I was prepared for use.

[0041] Table 2-2 Synthetic raw materials of two-tailed four-functional hydrophilic UV coating hardness additives

[0042] name

[0043] Dissolve hydroxyethyl methacrylate in THF, add dropwise reaction with IPDI for 4 hours at ice-water bath temperature, raise the temperature to 30°C and react for 12 hours to obtain the intermediate product, add prepolymer I to the intermediate product and raise the temperature to 70°C , stirred, reacted for 6 hours, vacuumed, kept the vacuum degree of the reaction system at 0.09MPa, controlled the temper...

Embodiment 3

[0045] Table 3-1 Synthetic raw materials of prepolymer Ⅰ

[0046] name

quality

Polyethylene glycol monomethyl ether (number average molecular weight 4000)

40.0g

IPDI

2.22g

Hyperbranched bis-MPA Polyester-8-Hydroxy-1 Generation

14.8g

DBTL

0.8g

DMSO

24.8g

[0047] Remove water from polyethylene glycol monomethyl ether and react with IPDI with catalyst DBTL at 65°C for 3 hours, dissolve hyperbranched bis-MPA polyester-8-hydroxyl-1 generation polymer with DMSO and add to the reaction system In the process, the temperature was raised to 75°C, and after 5 hours of reaction, prepolymer I was prepared for use.

[0048] Table 3-2 Synthetic raw materials of two-tailed four-functional hydrophilic UV coating hardness additives

[0049] name

quality

Hydroxypropyl Acrylate

5.8g

IPDI

8.88g (0.04mol)

Prepolymer I

57.02g

DMSO

30.72g

[0050] Dissolve hydr...

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Abstract

The invention discloses a double-tail four-functional hydrophilic UV (Ultraviolet) coating hardness assistant and a preparation method thereof. The preparation method comprises the following steps: firstly, reacting polyethylene glycol monomethyl ether, isocyanate and one-generation hyperbranched polymer to form a prepolymer I, and subsequently reacting a prepolymer obtained after crylic acid monomer is reacted with isocyanate with the prepolymer I, thereby preparing the double-tail four-functional hydrophilic UV coating hardness assistant. According to the preparation method, high-functionality hyperbranched molecules are adopted as primary reaction materials, the characteristics that the hyperbranched molecules are high in functionality but low in viscosity are taken, when the prepared hardness assistant is added into an aqueous UV resin, not only is the problem that a coating is always low in curing property but high in viscosity solved, but also the water solubility of the UV resin is improved, the hardness of the aqueous UV resin is also improved, and the application range of the aqueous UV resin is widened. When non-ionic polyethylene glycol methyl ether is connected to molecules, therefore the acid-alkali resistance of the coating is improved, an emulsion system is well stabilized, and experiment shows that the effect is good.

Description

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Claims

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Application Information

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Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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