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Acrylic polyurethane coatings including polyether polyols

A technology of acrylic polyurethane and polyether triol, which is applied in the field of acrylic polyurethane coatings including polyether polyols, which can solve the problems of increased content of volatile organic compounds in polyurethane coatings and increased concerns about coating toxicity

Active Publication Date: 2021-10-08
DOW GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unfortunately, high levels of solvent additives can lead to increased levels of volatile organic compounds (VOCs) in the resulting polyurethane coatings, which in turn can lead to increased concerns about coating toxicity

Method used

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  • Acrylic polyurethane coatings including polyether polyols
  • Acrylic polyurethane coatings including polyether polyols
  • Acrylic polyurethane coatings including polyether polyols

Examples

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example

[0044] The following examples are provided to illustrate various embodiments, but are not intended to limit the scope of the claims. All parts and percentages are by weight unless otherwise indicated. Approximate properties, characteristics, parameters, etc. are provided below with respect to various working examples, comparative examples, and materials used in the working examples and comparative examples. In addition, the raw materials used in the examples are described as follows:

[0045] PARALOID TM AU-830 is an acrylic polyol having 77 wt% solids dispersed in methyl n-amyl ketone (MAK) solvent, a hydroxyl equivalent weight of 500 g / mol equivalent by weight of solids, and an acid value of 3 mg KOH / g, having an average molecular weight of 7,000 g / mol by weight of solids and a provided viscosity of 15,000 mPa*s at 25°C, available from The Dow Chemical Company, Midland, Michigan;

[0046] PARALOID TM AU-1453 is an acrylic polyol having 70 wt% solids dispersed in n-but...

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Abstract

An acrylic polyurethane coating composition comprising an isocyanate component comprising at least one polyisocyanate trimer; and an isocyanate reaction mixture comprising 25 wt % to 80 wt% acrylic polyol and 1 wt% to 30 wt% polyether polyol, the solids content of the acrylic polyol is at least 50 wt% based on the total weight of the acrylic polyol, and the polyether polyol has an The viscosity is less than 500mPa*s and the number average molecular weight is greater than 300 and less than 700.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Application No. 62 / 268,602, filed December 17, 2015, which is hereby incorporated by reference in its entirety. technical field [0003] Embodiments of the present disclosure relate generally to acrylic urethane coatings including reactive diluents and methods of making such coatings, and in particular to two-component acrylic urethane coatings having high solids content and including polyether polyols as reactive diluents. Background technique [0004] Two-component polyurethane coatings are used in a variety of applications. For some of these applications, the coating is applied to the substrate via a spray gun. Spray coating generally requires the use of solvent additives to reduce the viscosity of the coating composition to a range compatible with the spray gun. Unfortunately, high levels of solvent additives can lead to increased levels of volatile organic comp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/48C08G18/62C08G18/79C08G18/08C08G18/24C09D175/08C08G18/40
CPCC08G18/4829C08G18/6229C08G18/792C08G18/0842C08G18/246C09D175/08C08G18/4063C08G18/4845C09D175/16
Inventor C·S·莱特科A·M·斯蒂芬森J·N·阿伊罗普洛斯J·克列尔
Owner DOW GLOBAL TECH LLC