Aqueous four-arm star-shaped symmetric multi-block ultraviolet light-curable resin and preparation method thereof

A four-arm star-shaped, resin-cured technology, used in coatings, polyurea/polyurethane coatings, etc., can solve the problems of increasing the difficulty of the coating process, large molecular weight of the polymer, and adverse production effects, and reduce the difficulty of the coating process. , The effect of short curing time and low energy consumption

Inactive Publication Date: 2019-01-25
HARBIN INST OF TECH WUXI RES INST OF NEW MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult for the added inorganic filler and the organic system of the paint to dissolve perfectly, and an unstable state such as separation will inevitably occur after long-term storage. In the later storage and use, the sedimentation of the filler may cause the inorganic filler to be located at the bottom of the container, affecting the later coating. Cloth effect, causing adverse effects on production
In addition, the existing one-component UV-curable matte coating materials have high polymer molecular weight and high system viscosity, which increases the difficulty of coating processing.

Method used

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  • Aqueous four-arm star-shaped symmetric multi-block ultraviolet light-curable resin and preparation method thereof
  • Aqueous four-arm star-shaped symmetric multi-block ultraviolet light-curable resin and preparation method thereof
  • Aqueous four-arm star-shaped symmetric multi-block ultraviolet light-curable resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Weigh 13.62g (0.1mol) of pentaerythritol and place it in a reaction kettle, add 0.00136g of catalyst dibutyltin dilaurate, heat to 180°C, and blow nitrogen. Weigh 88.92 g (0.4 mol) of isophorone diisocyanate and slowly add it into the reaction kettle, the feeding time is 5 hours, and the reaction is kept for 3 hours. Weigh 53.65 g (0.4 mol) of 2,2-dimethylolpropionic acid, slowly add it into the reaction kettle, the feeding time is 3 hours, and keep warm for 3 hours. Weigh 88.92 g (0.4 mol) of isophorone diisocyanate and slowly add it into the reaction kettle, the feeding time is 5 hours, and the reaction is kept for 3 hours. Weigh 800 g (0.4 mol) of polyethylene glycol with a molecular weight of 2000 g / mol, and slowly add it into the reaction kettle, the feeding time is 3 hours, and the reaction is kept for 4 hours. Weigh 88.92 g (0.4 mol) of isophorone diisocyanate and slowly add it into the reaction kettle, the feeding time is 5 hours, and the reaction is kept for 3...

Embodiment 2

[0061] Weigh 13.62g (0.1mol) of pentaerythritol and place it in a reaction kettle, add 0.068g of catalyst dibutyltin dilaurate, heat to 180°C, and blow nitrogen. Weigh 88.92 g (0.4 mol) of isophorone diisocyanate and slowly add it into the reaction kettle, the feeding time is 5 hours, and the reaction is kept for 3 hours. Weigh 53.65 g (0.4 mol) of 2,2-dimethylolpropionic acid, slowly add it into the reaction kettle, the feeding time is 3 hours, and keep warm for 3 hours. Weigh 88.92 g (0.4 mol) of isophorone diisocyanate and slowly add it into the reaction kettle, the feeding time is 5 hours, and the reaction is kept for 3 hours. Weigh 400 g (0.4 mol) of polyethylene glycol with a molecular weight of 1000 g / mol, slowly add it into the reaction kettle, the feeding time is 3 hours, and the reaction is kept for 4 hours. Weigh 88.92 g (0.4 mol) of isophorone diisocyanate and slowly add it into the reaction kettle, the feeding time is 5 hours, and the reaction is kept for 3 hours...

Embodiment 3

[0066] Weigh 13.62 g (0.1 mol) of pentaerythritol and place it in a reaction kettle, add 0.01 g of catalyst tetraisopropyl titanate, heat to 180° C., and blow nitrogen. Weigh 67.28g (0.4mol) of hexamethylene diisocyanate and slowly add it into the reaction kettle, the feeding time is 5 hours, and the reaction is kept for 3 hours. Weigh 47.66g (0.4mol) of N-methyldiethanolamine, and slowly add it into the reaction kettle, the feeding time is 3 hours, and the reaction is kept for 3 hours. Weigh 67.28g (0.4mol) of hexamethylene diisocyanate and slowly add it into the reaction kettle, the feeding time is 5 hours, and the reaction is kept for 3 hours. Weigh 1200 g (0.4 mol) of polyethylene glycol with a molecular weight of 3000 g / mol, and slowly add it into the reaction kettle, the feeding time is 3 hours, and the reaction is kept for 4 hours. Weigh 67.28g (0.4mol) of hexamethylene diisocyanate and slowly add it into the reaction kettle, the feeding time is 5 hours, and the reacti...

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Abstract

The invention discloses an aqueous four-arm star-shaped symmetric multi-block ultraviolet light-curable resin and a preparation method thereof, wherein the four-arm star-shaped symmetric multi-block molecular structure of the aqueous four-arm star-shaped symmetric multi-block ultraviolet light-curable resin has four long-symmetric chain segments, and each molecular chain sequentially contains a polyurethane sub-chain segment, a chain extension group, a polyurethane sub-chain segment, a polyethylene glycol sub-chain segment, a polyurethane sub-chain segment, a chain extension group, a polyurethane sub-chain segment and an acrylate sub-chain segment from center to periphery. According to the present invention, based on the difference in the crystallization property and the microscopic compatibility of the polyethylene glycol sub-chain segment and the polyurethane sub-chain segment, the molecular sub-chain segments can produce different refractive indexes so as to achieve the matt effect;and the single-component ultraviolet light-curable matt coating material can be prepared from the aqueous four-arm star-shaped symmetric multi-block ultraviolet light-curable resin, can be quickly cured, and has good matt effect while can ensure excellent flexibility and high hardness.

Description

technical field [0001] The invention relates to the technical field of ultraviolet curable coatings, in particular to a water-based four-arm star-shaped symmetrical multi-block ultraviolet curable resin and a preparation method thereof. Background technique [0002] With the upgrading of social industrial level and people's consumption level, consumers have more and more strict requirements on the appearance, touch and experience comfort of daily necessities and industrial products. Many high-end products have begun to attract the attention of the public with their beautiful, comfortable appearance and touch. The application of matte coating also arises at the historic moment. With its beautiful appearance and comfortable human physiological touch, it has gradually occupied a place in the automotive interior, electronic products and other industries, and has gradually gained more favor. Ultraviolet (UV) curing technology has become a new technology of green coating materia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/79C08G18/75C08G18/73C08G18/66C08G18/48C08G18/34C08G18/32C09D175/16
CPCC08G18/3206C08G18/348C08G18/4833C08G18/73C08G18/755C08G18/79C09D175/16
Inventor 白永平岳利培李卫东李夏倩殷晓芬
Owner HARBIN INST OF TECH WUXI RES INST OF NEW MATERIALS
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