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High gloss extended alkyd emulsion paints

A technology of alkyd resin emulsion and extender, which can be used in coatings, polyester coatings, etc., and can solve the problems of reduced specular gloss and opaque polymers that cannot be used in high-gloss water-based paints.

Active Publication Date: 2010-07-07
ROHM & HAAS CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In general, adding about 5% of opaque polymers will result in a 20-degree specular gloss loss of more than 20% for waterborne acrylic paints
Therefore, opaque polymers cannot be used in high gloss waterborne paints

Method used

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  • High gloss extended alkyd emulsion paints
  • High gloss extended alkyd emulsion paints

Examples

Experimental program
Comparison scheme
Effect test

iO2 proportion 3

[0095] Relative to 100 parts by weight of binder dry weight

[0096] 0 4.5 8.0 11.7 20.1 36.0 52.3

[0097] OP / extender dry weight ratio 3

[0098] 1 day gloss (%)

[0099] 20° 89 88 84 79 64 30 12

[0100] 60° 95 96 96 95 87 70 48

[0101] 7 days gloss (%)

[0102] 20° 88 86 81 71 47 19 8

[0103] 60° 95 96 94 92 80 60 38

[0104] CR(%) of 100μ 4 95.0 95.0 95.2 95.2 94.4 93.4 93.0

[0105] 1. Ropaque TM Ultra E was purchased from Rohm and Haas Company, Philadelphia, PA, USA.

[0106] 2. P2, purchased from Solvay S.A, Brussels, Belgium

[0107] 3. Weight ratio based on dry weight of component solids

[0108] 4. CR is the contrast ratio (a measure of "masking performance") as defined above

[0109] The results show that for gloss paints based on alkyd emulsions, high amounts of opacifying polymers can be added without significant loss of gloss properties (Formulations 1-3). The results are particularly pronounced for the 20° angle measurements...

example 3

[0148] Relative to 100 parts by weight of binder dry weight

[0149] 0 4.5 8 11.7 20.1 36 52.3

[0150] OP / extender dry weight ratio 3

[0151] 1 day gloss (%)

[0152] 20° 70.7 58.8 52.7 43.5 11.5 5.6 2.7

[0153] 60° 87.3 83.9 82 77.8 46.8 31.7 17.2

[0154] 7 days gloss (%)

[0155] 20° 67.3 54.5 48.3 38.8 9.8 4.8 2.4

[0156] 60° 86.4 82.1 79.9 75 43.1 28 14.9

[0157] 1. The binder was a 70 / 30 alkyd emulsion / acrylic emulsion blend. Alkyd emulsions are AZ 554Z-50, acrylic emulsion is Primal TM HG-98.

[0158] 2. Ropaque TM Ultra E was purchased from Rohm and Haas Company, Philadelphia, PA, USA.

[0159] 3. P2, purchased from Solvay S.A, Brussels, Belgium

[0160] The data show that even for the case of binder modification of alkyd emulsion based paints, the effect of opacifying polymer on gloss properties is still lower than that of mineral extenders.

[0161] Comparing Alkyd Emulsion Systems

[0162] Japanese Patent Applicat...

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Abstract

This invention is an aqueous paint composition comprising an alkyd emulsion; a dispersion of organic extender particles, which particles comprise, when dry, one or more void; and one or more pigment. The aqueous paint composition provides high gloss decorative and protective coatings for various substrates, which coatings are extended with lower cost-in-use opaque polymer while still providing the high gloss performance of unextended alkyd emulsion paints. Also provided is a method for providing the high gloss coating.

Description

technical field [0001] The present invention relates to water-based alkyd resin latex paint. The invention specifically relates to the use of opaque polymers as organic extenders in high gloss alkyd emulsion based paints. More specifically, the present invention relates to an aqueous paint composition comprising an alkyd resin emulsion; a dispersion of organic extender particles comprising one or more voids when dry; and one or Various pigments. Background technique [0002] In the present invention, the term "pigment" includes opacifying pigments, colorants and special effect pigments. [0003] In the present invention, the term "opaque pigment" specifically excludes said organic extender particles which, when dry, comprise one or more voids. That is, in the present invention, the term "opaque pigment" excludes opaque polymers. In the present invention, opacifying pigments include inorganic pigment particles, such as titanium dioxide, capable of scattering substantially...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D167/08C09D5/00C09D7/61
CPCC09D167/08C09D5/028C08K3/22C08L51/00C09D5/36C09D7/1216C09D7/61C08L2666/02C08L2666/24
Inventor D·M·法萨诺M·古伊A·J·-P·加尔松
Owner ROHM & HAAS CO