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Low-VOC and high-solid-content water-based paint based on acrylic resin and preparation process thereof

An acrylic resin, high solid content technology, used in coatings and other directions, can solve the problems of poor coating construction performance, environmental hazards, and low solid content.

Active Publication Date: 2021-05-18
山东齐鲁漆业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The solid content of acrylic resins widely used at present is generally not high, which will lead to poor construction performance of coatings, unsatisfactory fullness of coating films, and the use of a large amount of organic solvents in resins will also cause harm to the environment. These problems need to be solved urgently

Method used

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  • Low-VOC and high-solid-content water-based paint based on acrylic resin and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Add 50 parts of isophorone diisocyanate, 40 parts of hydroxypropyl acrylate, 0.2 part of hydroquinone, 0.1 part of dibutyltin dilaurate in a four-necked flask equipped with a condenser tube, a thermometer and a stirrer, Stir at 25°C for 2 hours, raise the temperature to 50°C, continue the reaction for 5 hours, titrate the content of isocyanate group with di-n-butylamine method, when the content of -NCO group reaches the theoretical end point, an intermediate product is obtained;

[0034] (2) Add 20 parts of hydroxypolypropylene glycol to the intermediate product, stir and react at 70°C for 3h, cool down to 50°C, add 10 parts of hyperbranched polyester acetone solution, react at 50°C for 4h, dioxane as solvent Add 15 parts of perfluoropropionic anhydride and raise the temperature to 100°C to react for 5 hours, remove the solvent under reduced pressure, cool down to 40°C and add 3 parts of triethylamine to neutralize and form a salt to obtain hyperbranched polyurethane...

Embodiment 2

[0040] (1) Add 20 parts of toluene diisocyanate, 20 parts of hydroxypropyl acrylate, 0.1 part of 4-hydroxypiperidinol oxygen free radical, 1 part of dilauric acid di Butyl tin, stirred at 25°C for 2h, heated to 50°C, continued to react for 5h, titrated the content of isocyanate group with di-n-butylamine method, when the content of -NCO group reached the theoretical end point, an intermediate product was obtained;

[0041] (2) Add 10 parts of hydroxy polypropylene glycol to the intermediate product, stir and react at 70°C for 3h, cool down to 50°C, add acetone solution containing 1 part of hyperbranched polyester, react at 50°C for 4h, dioxane as solvent Add 5 parts of phthalic anhydride and raise the temperature to 100°C to react for 5 hours, remove the solvent under reduced pressure, cool down to 40°C and add 1 part of dimethylethanolamine to neutralize and form a salt to obtain hyperbranched urethane acrylate;

[0042] (3) Add 12 parts of acetoacetoxyethyl methacrylate, 10 ...

Embodiment 3

[0047] (1) Add 100 parts of isophorone diisocyanate, 50 parts of hydroxypropyl acrylate, 1 part of p-hydroxyanisole, and 1 part of dibutyltin dilaurate into a four-necked flask equipped with a condenser tube, a thermometer and a stirrer , Stir at 25°C for 2h, raise the temperature to 50°C, continue the reaction for 5h, titrate the content of isocyanate group with di-n-butylamine method, when the content of -NCO group reaches the theoretical end point, an intermediate product is obtained;

[0048] (2) Add 50 parts of hydroxypolypropylene glycol to the intermediate product, stir and react at 70°C for 3h, cool down to 50°C, add acetone solution containing 20 parts of hyperbranched polyester, react at 50°C for 4h, dioxane as solvent Add 20 parts of mellitic acid trianhydride and raise the temperature to 100°C to react for 5 hours, remove the solvent under reduced pressure, cool down to 40°C and add 5 parts of triethanolamine to neutralize and form a salt to obtain hyperbranched ure...

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Abstract

The invention discloses a low-VOC and high-solid-content water-based paint based on acrylic resin and a preparation method thereof, and the water-based paint prepared by adopting the formula provided by the invention still keeps excellent properties in the aspects of adhesive force, acid and alkali resistance and the like on the premise of reducing viscosity, increasing solid content and having relatively low VOC.

Description

technical field [0001] The invention belongs to the field of chemical coatings, in particular to an acrylic resin-based water-based paint with low VOC and high solid content and a preparation process thereof. Background technique [0002] Acrylic paint is a kind of synthetic ester paint with excellent performance. It has a series of outstanding advantages, such as excellent gloss retention, color retention, weather resistance, environmental protection, convenient construction, and various curing methods. It has been widely used in Automotive, home appliances, decoration and other fields. The solid content of acrylic resins widely used at present is generally not high, which will lead to poor construction performance of coatings, unsatisfactory fullness of coating films, and the use of a large amount of organic solvents in resins will also cause harm to the environment. These problems need to be solved urgently . Contents of the invention [0003] Aiming at the deficienci...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D151/08C09D7/62C09D7/61C08F283/00C08F220/28C08F220/14C08F220/18C08F220/20
CPCC09D151/08C09D7/62C09D7/61C08F283/008C08K2003/2241C08K2003/3045C08K13/06C08K9/06C08K3/34C08K3/36C08K3/22C08K3/30C08F220/283C08F220/14C08F220/1804C08F220/20
Inventor 王庆军闫士钢王桂霞孙文俊李丽段洪东赵玉敏
Owner 山东齐鲁漆业有限公司
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