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Low-viscosity modified polyester acrylate and preparation method thereof

A polyester acrylate, low-viscosity technology, applied in the field of coatings, can solve the problems of reducing the performance of coatings, environmental and human health effects, strong irritation and volatility, etc., to achieve the effect of less irritation, less damage and less odor

Inactive Publication Date: 2018-04-06
广州五行材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, UV curable resins are developing in the direction of low viscosity, while epoxy acrylate and urethane acrylate generally have high viscosity, and more reactive diluents are needed to obtain lower viscosity, which will reduce the performance of the coating. At the same time, some diluents are highly irritating and volatile, which have a certain impact on the environment and human health.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The preparation method of the low-viscosity modified polyester acrylate involved in the present embodiment comprises the steps:

[0023] 1) Dissolve 40 parts of polybasic acid, 30 parts of polyol, 0.3 part of catalyst, and 0.08 part of antioxidant in the solvent in the reaction kettle, and at the same time pass in nitrogen for protection, raise the temperature to 135-145 ° C, keep warm until the acid value is close to 5mgKOH / g;

[0024] 2) Cool down the reactor to 75-85°C, add 8 parts of acrylic acid and 0.3 parts of polymerization inhibitor to it, then raise the temperature to 120-125°C, and continue the reaction in the reactor until the acid value is less than 10mgKOH / g;

[0025] 3) Start to vacuumize the reaction kettle, remove the reflux solvent, and after the solvent is removed, cool down to 75-85°C and discharge the material, that is, the polyester acrylate is obtained.

Embodiment 2

[0027] The preparation method of the low-viscosity modified polyester acrylate involved in the present embodiment comprises the steps:

[0028] 1) Dissolve 50 parts of polybasic acid, 40 parts of polyol, 0.5 part of catalyst, and 0.1 part of antioxidant in the solvent in the reaction kettle, and at the same time pass in nitrogen for protection, raise the temperature to 135-145 ° C, keep warm until the acid value is close to 5mgKOH / g;

[0029] 2) Cool down the reactor to 75-85°C, add 10 parts of acrylic acid and 0.5 parts of polymerization inhibitor to it, then raise the temperature to 120-125°C, and continue the reaction in the reactor until the acid value is less than 10mgKOH / g;

[0030] 3) Start to vacuumize the reaction kettle, remove the reflux solvent, and after the solvent is removed, cool down to 75-85°C and discharge the material, that is, the polyester acrylate is obtained.

Embodiment 3

[0032] The preparation method of the low-viscosity modified polyester acrylate involved in the present embodiment comprises the steps:

[0033] 1) Dissolve 60 parts of polybasic acid, 50 parts of polyol, 0.8 part of catalyst, and 0.12 part of antioxidant in the solvent in the reaction kettle, and at the same time pass in nitrogen for protection, raise the temperature to 135-145 ° C, keep warm until the acid value is close to 5mgKOH / g;

[0034] 2) Cool down the reactor to 75-85°C, add 15 parts of acrylic acid and 0.8 parts of polymerization inhibitor to it, then raise the temperature to 120-125°C, and continue the reaction in the reactor until the acid value is less than 10mgKOH / g;

[0035] 3) Start to vacuumize the reaction kettle, remove the reflux solvent, and after the solvent is removed, cool down to 75-85°C and discharge the material, that is, the polyester acrylate is obtained.

[0036] In embodiments 1 to 3, the polybasic acid is one or more of adipic acid, suberic aci...

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Abstract

The invention provides a preparation method of low-viscosity modified polyester acrylate. The preparation method comprises the following steps: 1) dissolving polybasic acid, polyol, a catalyst and anantioxidant into a solvent of a reaction kettle, and leading nitrogen for protection, heating to 135-145DEG C, and insulating until the acid value is close to 5mgKOH / g; 2) cooling the reaction kettleto 75-85DEG C, adding acrylic acid and a polymerization inhibitor into the reaction kettle, then heating to 120-125DEG C, and further reacting in the reaction kettle until the acid value is less than10mgKOH / g; and 3) vacuumizing the reaction kettle, removing reflux solvent, cooling to 75-85DEG C and discharging after the solvent is removed cleanly to obtain polyester acrylate. The invention further provides a low-viscosity modified polyester acrylate production prepared by using the preparation method. The polyester acrylate is low in viscosity, not only can be used as an oligomer, but also can be used as an activity dilution monomer, and in addition, the polyester acrylate is light in odor and small in stimulation, thus having small damage to a human body.

Description

technical field [0001] The invention belongs to the field of coatings, and specifically refers to a low-viscosity modified polyester acrylate and a preparation method thereof. Background technique [0002] Due to its wide range of basic raw materials, polyester polyols can be combined into polyester polyols with different properties through different polyols and polyacids, and have been widely used in various coating industries. Conventional polyester polyols generally do not form films alone, and need to be formulated into polyester-amino baking varnishes, polyester polyurethane lacquers, and unsaturated polyester lacquers. The resulting coating films have high gloss, good fullness, strong weather resistance, and wet It has good properties and its formula design theory is mature. If the performance of polyester polyol is introduced into the field of UV curing, its application field will be greatly expanded. [0003] At present, UV curable resins are developing in the dire...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/91C09D167/06
CPCC08G63/916C08G63/914C09D167/06
Inventor 刘红春
Owner 广州五行材料科技有限公司
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