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Stable aqueous dispension of particle polymers containing structural units of 2-(methacryloyloxy) ethyl phosphonic acid and composites thereof

一种甲基丙烯酰氧基、水性分散液的技术，应用在所述胶乳粒子的复合物领域，能够解决限制效用等问题，达到高产率的效果

Active Publication Date: 2015-07-29
ROHM & HAAS CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The presence of the diester, although not causing adverse effects in latex synthesis, can act as a crosslinker, which may limit the utility of the monomer in applications requiring low molecular weight emulsions or emulsion dissolution, or both

Method used

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  • Stable aqueous dispension of particle polymers containing structural units of 2-(methacryloyloxy) ethyl phosphonic acid and composites thereof
  • Stable aqueous dispension of particle polymers containing structural units of 2-(methacryloyloxy) ethyl phosphonic acid and composites thereof
  • Stable aqueous dispension of particle polymers containing structural units of 2-(methacryloyloxy) ethyl phosphonic acid and composites thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0028] Example 1 - Preparation of MEP-containing latex particles

[0029] The first monomer emulsion was prepared by mixing deionized water (200 g), Disponil FES 993 anionic surfactant (28.25 g, 30% active), butyl acrylate (285.6 g), methyl methacrylate (202.32 g), 2 -(methacryloyloxy)ethylphosphonic acid (16.11 g, 95% active) and sodium 4-vinylbenzenesulfonate (7.53 g, 90% active). The second monomer emulsion was prepared by mixing deionized water (420 g), Disponil FES 993 anionic surfactant (28.75 g, 30% active), butyl acrylate (666.4 g), methyl methacrylate (511.65 g), 4 - Prepared with sodium vinylbenzenesulfonate (3.78 g, 90% active) and ureidomethacrylate (17 g, 50% active).

[0030] To a 5 L 4 neck round bottom flask equipped with paddle stirrer, thermometer, nitrogen inlet and reflux condenser was added deionized water (900 g) and Disponil FES 993 anionic surfactant (17 g, 30% active). in N 2 The contents of the flask were heated to 84° C. at 100° C. and stirring wa...

example 2

[0046] Example 2 - Preparation of MEP-containing latex particles with acorn morphology

[0047] A. Preform Preparation

[0048] The first monomer emulsion was prepared by mixing deionized water (200 g), Disponil FES 993 anionic surfactant (21.3 g, 30% active), butyl acrylate (371.2 g), methyl methacrylate (213.15 g), methanol Allyl acrylate (9.6 g), 2-(methacryloxy)ethylphosphonic acid (35.0 g, 95% active) and methacrylic acid (12.8 g).

[0049] equipped with paddle stirrer, thermometer, N 2 A 5 liter four necked round bottom flask with inlet and reflux condenser was charged with deionized water (600 g) and Disponil FES 32 anionic surfactant (64 g, 30% active). in N 2 The contents of the flask were heated to 85°C under atmosphere and stirring was started. A portion of the first monomer emulsion (70 g) was then added, followed by the rapid addition of aqueous sodium persulfate (2.56 g in 30 g deionized water) and another rinse of deionized water (5 g). After stirring for 1...

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Abstract

The present invention is a composition comprising a stable aqueous dispersion of polymer particles comprising structural units of a nonionic monoethylenically unsaturated monomer; 2 (methacryloyloxy)ethyl phosphonic acid (MEP) or a salt thereof; and a sulfur acid monomer or carboxylic acid monomer or a combination thereof or a salt thereof, as well as a composite comprising the polymer particles adsorbed to the surface of a pigment particle such as TiO2. The composition and composite are prepared using the phosphorus acid monomer MEP, which can be prepared in high purity with low residual non-polymerizable phosphorus acid, thereby reducing the load of neutralizing agent required to achieve the targeted pH as compared with phophoethyl methacrylate (PEM).

Description

Background technique [0001] The present invention relates to latex particles having 2-(methacryloyloxy)ethylphosphonic acid structural units and composites comprising said latex particles adsorbed to pigment particles. [0002] Stable aqueous dispersions of polymers containing phosphoroethyl methacrylate (PEM) structural units are known to improve the hiding power and stain resistance of paint formulations. The use of PEM-containing paint formulations is well known. For example, U.S. 8,158,713 B1 discloses that paint formulations containing binders comprising ethyl acrylate and relatively low levels of copolymers of PEM and acetoacetoxyethyl methacrylate improve stain and scrub resistance. amazing improvement. U.S. 5,385,960 discloses including adsorption to TiO 2 Improvement in hiding power of paint formulations containing dispersions of PEM latex polymers. U.S. 7,081,488 B1 discloses the increased hiding efficiency obtained using composite particles with adsorbed PEM-con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C09J133/06
CPCC09D133/08C08F220/14C08F228/02C09D143/02C08F220/18C08F265/06C09D151/003C08F230/02C08F220/1804C08F220/36C08F212/14C08F220/06C08F220/40C08K3/22C08K2003/2241
Inventor J·C·勃林A·S·布劳内尔M·塞西欧萨姆
Owner ROHM & HAAS CO
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