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Aqueous polymer, dispersion, and aqueous paint

A technology of water-based polymers and dispersions, applied in coatings, pigment pastes, etc., can solve problems such as easy aggregation and sedimentation, poor coating properties, and inability to disperse and stabilize

Inactive Publication Date: 2021-03-05
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

White paint requires white pulp with high tinting strength and high opacity, but the key problem of the high tinting strength and high opacity paint of white pulp is that TiO 2 It is easy to aggregate and settle, unable to disperse and stabilize, and deteriorate the properties of the coating. Therefore, it is urgent to develop water-based white color paste and dispersant for coatings.

Method used

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  • Aqueous polymer, dispersion, and aqueous paint
  • Aqueous polymer, dispersion, and aqueous paint
  • Aqueous polymer, dispersion, and aqueous paint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1

[0028] Embodiment 1-1 (waterborne polymer 1d)

[0029] 79 g of (26 mmole, purchased from Cray Valley) was added to 200 mL of MEK, heated and stirred until completely dissolved. In addition, the polyether monoamine of 494g ( L-207, 247mmole, purchased from Huntsman) was added to 100mL of MEK, and the above L-207 added to Post-reaction for 12 hours. After the solvent is removed by rotary concentration, the concentrate is added with 912g of water and 16g of ammonia (28%), stirred until completely dissolved to obtain a dispersant such as water-based polymer 1d (solid content: 38.4%), which The graft ratio of L-207 is 100%, and the acid value is about 20-40 mg KOH / g. The above reaction is as follows, and x, y, z, m, n and A are based on the composition and amount of reactants, respectively: x is about 19-21, y is about 0, z is about 9-11, m is about 30-32, n is about 10~12 and A is the above There is a C=O signal of maleic anhydride in the IR spectrum (1778cm -1 ...

Embodiment 1-2

[0031] Embodiment 1-2 (waterborne polymer 2d)

[0032] 80 g of (40 mmole, purchased from Cray Valley) was added to 200 mL of THF, heated and stirred until completely dissolved. In addition, 120g of polyether monoamine ( L-300, 40 mmole, purchased from Huntsman) was added to 100 mL of THF, and the above L-300 added to Post-reaction for 18 hours. After the solvent is removed by rotary concentration, the concentrate is added with 168g of water and 43g of ammonia (28%), stirred until completely dissolved to obtain a dispersant such as water-based polymer 2d (solid content: 48.7%), which The grafting of L-300 is about 10%, and the acid value is about 170-190 mg KOH / g. The above reaction can refer to the reaction formula of Example 1-1, and x, y, z, m, n and A are based on the composition and amount of reactants, respectively: x is about 9-12, y is about 7-9, z is about 1. m is about 57~60, n is about 7~9 and A is

Embodiment 1-3

[0033] Embodiment 1-3 (waterborne polymer 3d)

[0034] 50 g of (25 mmole) was added to 100 mL of THF, heated and stirred until completely dissolved In addition, 100g of polyether monoamine ( L-200, 50mmole, purchased from Huntsman) was added to 70mL of THF, heated and stirred until completely dissolved L-200. At 50°C the L-200 solution was added to After reaction in solution for 18 hours. Then, after rotating and concentrating to remove the solvent, the concentrate was added with 121g of water and 17g of ammonia (28%), and stirred until completely dissolved to obtain aqueous polymer 3d (solid content: 52.0%), which The graft ratio of L-200 is about 20%, and the acid value is about 130-150 mgKOH / g. The above reaction can refer to the reaction formula of Example 1-1, and x, y, z, m, n and A are based on the composition and amount of reactants, respectively: x is about 9-12, y is about 6-8, z is about 2. m is about 39~42, n is about 2~4 and A is

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Abstract

An aqueous polymer is provided, which is formed by neutralizing a copolymer modified by polyalkylene glycol with ammonia, primary amine, secondary amine, or a combination thereof, wherein the copolymer is copolymerized from an anhydride monomer with a double bond, a monomer with a double bond, and an initiator. The aqueous polymer can be mixed and dispersed with water and pigment powder to form adispersion. The dispersion can be mixed with binder to form an aqueous paint.

Description

technical field [0001] The present invention relates to aqueous polymers, and more particularly to dispersions and aqueous coatings comprising aqueous polymers. Background technique [0002] In 2018, global paint sales reached NT$5.7 trillion, and white paint accounted for about 50% of the sales volume. With the improvement of environmental protection awareness, water-based white paste has attracted much attention, which can be used for primer or color enhancement of color coatings. White paint requires white pulp with high tinting strength and high opacity, but the key problem of the high tinting strength and high opacity paint of white pulp is that TiO 2 It is easy to aggregate and settle, unable to disperse and stabilize, and deteriorate the properties of the paint. Therefore, it is urgent to develop water-based white color paste and dispersant for paint. Contents of the invention [0003] The water-based polymer provided by an embodiment of the present invention is f...

Claims

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Application Information

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IPC IPC(8): C08G81/02C09D17/00C09D7/65C09D7/61
CPCC08G81/025C09D17/008C09D17/001C09D7/65C09D7/61C08F8/30C08G81/024C08F222/08C09D187/005C08K2003/2241C08K2003/2244C08K2201/003
Inventor 张嘉文余若涵张信贞陈佑蕙陈贞伃
Owner IND TECH RES INST
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