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An aqueous coating composition

A technology of water-based coatings and compositions, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of damaging the coating film, reducing the gloss level of the coating film, etc.

Inactive Publication Date: 2016-02-03
DOW GLOBAL TECH LLC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Simply increasing the matting agent dosage can reduce the gloss level of the resulting paint film, but usually at the expense of one or more of the following properties of the paint film: clarity, water resistance, and alcohol resistance

Method used

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  • An aqueous coating composition
  • An aqueous coating composition
  • An aqueous coating composition

Examples

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example

[0043] Certain embodiments of the present invention will now be described in the following examples, wherein all parts and percentages are by weight unless otherwise indicated. The following materials are used in the examples:

[0044] The DEUTERON MK matting agent from Duteran is based on a 200m 2 / g to 300m 2 / g of polyurea powder with a specific surface area and an average particle size of 6.3 microns.

[0045] ACEMATTTS-100 matting agent from Evonik is a matting agent with 220m 2 / g to 280m 2 / g of fumed silica powder with a specific surface area and an average particle size of 9.5 microns.

[0046] PARALOIDPRD137B emulsion (solids content: 40 wt %) obtained from The Dow Chemical Company is based on 2 / g to 1.5m 2 / g specific surface area and 5.5 micron average particle size, polyacrylate used as matting agent.

[0047] The ULTRALUBED 860 emulsion (solids content: 60wt%) obtained from Ken Adi Technology Company is based on 2 / g to 1.5m 2 / g specific surface area a...

example (Exs)1 to example 12

[0096] Coating compositions of Examples 1 to 2 were prepared according to the formulations shown in Table 1. The ingredients listed in Table 1 (below) were mixed using a conventional laboratory mixer.

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Abstract

An aqueous coating composition capable of providing coating films with balanced properties of low gloss, high clarity, and good water resistance and alcohol resistance, and a process of making and using such aqueous coating composition.

Description

technical field [0001] The present invention relates to an aqueous coating composition and methods of preparing and using the aqueous coating composition. Background technique [0002] Aqueous matt coating compositions generally contain inorganic or organic particles as matting agents to obtain a matt effect. Matting agents widely used in wood coatings include silica and polyurea matting agents. However, coating compositions containing these conventional matting agents generally have unsatisfactory water and alcohol resistance properties. In many applications, waterborne wood coatings, such as kitchens, bathrooms and dining tables, must have sufficient water resistance and 48% alcohol resistance to meet industry requirements, such as IKEAIOS-MAT-0066R2 standards. [0003] Matting agents based on plastic beads (such as polyethylene and polyacrylate beads) can provide paint films with better water resistance and alcohol resistance than the above-mentioned conventional mattin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D7/12C09D133/08C09D175/04C09D7/42C09D7/63
CPCC09D133/08C08L75/04C09D5/024C09D7/63C08K3/36C09D7/42C09D133/16
Inventor Y·徐F·詹X·杨B·郑B·沈Y·杨
Owner DOW GLOBAL TECH LLC
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