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Aqueous dispersion of fluoralkylated polymer particles with acorn morphology

一种水性分散液、氟烷基化的技术，应用在用于材料和表面科学的纳米技术、纳米技术、涂层等方向，能够解决成本费用等问题

Active Publication Date: 2018-06-29
ROHM & HAAS CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A major drawback of using fluoroalkylated latexes is the significant cost associated with their hydrocarbon counterparts

Method used

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  • Aqueous dispersion of fluoralkylated polymer particles with acorn morphology
  • Aqueous dispersion of fluoralkylated polymer particles with acorn morphology
  • Aqueous dispersion of fluoralkylated polymer particles with acorn morphology

Examples

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example 1

[0030] Example 1 - Aqueous Dispersion of Acorn Polymer Particles with Fluoroalkylated Cores

[0031] A. Core (preform) synthesis

[0032] By mixing deionized water (200 g), Disponil FES 993 surfactant (64 g, 30% active), butyl acrylate (203.2 g), styrene (203.2 g), methacrylic acid 2,2,2,-trifluoro Ethyl ester (192 g), allyl methacrylate (9.6 g), sodium 4-vinylbenzenesulfonate (17.78 g, 90% active) and methacrylic acid (16 g) prepared a first monomer emulsion.

[0033]To a 5 L four necked round bottom flask equipped with paddle stirrer, thermometer, nitrogen inlet and reflux condenser was added deionized water (600 g) and Disponil FES 32 surfactant (21.3 g, 30% active). in N 2 The contents of the flask were heated to 85° C. at 100° C. and stirring was started. A portion of the first monomer emulsion (70 g) was then added, followed by a rapid addition of a solution of ammonium persulfate (2.56 g) dissolved in deionized water (30 g), followed by a deionized water rinse (5 g)....

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Abstract

Abstract The present invention provides a composition comprising 1) an aqueous dispersion of polymer particles having a core-shell morphology wherein the core protuberates from the shell; wherein thecore comprises from 5 to 90 weight percent structural units of a fluoroalkylated monomer, and 2) less than 0.09 weight percent structural units of a phosphorus acid monomer; and wherein the shell comprises from 0.1 to 5 weight percent of itaconic acid or a phosphorus acid monomer, based on the weight of the shell. The present invention addresses a need in the art by providing a way of selectivelyconcentrating fluoroalkyl functionality into polymer particles with acorn morphology, thereby providing an improvement in dirt pick-up resistance of the subsequent coating.

Description

Background technique [0001] The present invention relates to aqueous dispersions of fluoroalkylated polymer particles having an acorn morphology. [0002] Aqueous dispersions of polymer particles functionalized with fluoroalkyl groups (fluoroalkylated latexes) are used in coating formulations due to their different properties from conventional non-fluorinated hydrocarbon polymers. The inclusion of fluorinated functional groups is often required in coatings applications where stain resistance, stain resistance, durability and / or weatherability are sought after performance properties. A major drawback of using fluoroalkylated latexes is the significant cost expense associated with their hydrocarbon counterparts. Accordingly, it would be advantageous in the coatings field to find polymers that more efficiently deliver improved stain resistance. Contents of the invention [0003] The present invention addresses the need in the art by providing a composition comprising 1) an aq...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F265/06C08F257/02C08F220/18C08F220/14C08F220/06C08F228/02C08F230/02C09D151/00C08F212/08C08F220/24C08F220/40
CPCC08L27/12C08L33/08C08L2666/42C08L2666/70C08F220/1804C08F212/08C08F257/02C08F265/06C09D151/003C08F220/14C08F230/02C08F220/24C08F220/40C08F220/06C08F228/02B82Y30/00C08F12/30C09D133/08C08K2003/2241C08L2207/53C08F2/22C09D143/02C08F212/30C08J3/05C08J3/126C08L33/16C08L43/02C08L25/14C08L33/12C09D133/16C08F214/285C08F130/02C08F114/28C08F14/18C08F214/28C08F214/186C08F114/18C08F214/18C08F14/28C08F30/02C08F2800/20C08J2333/16C08L25/18C08L33/14
Inventor J·C·勃林A·S·布朗奈尔A·斯沃茨
Owner ROHM & HAAS CO
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