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Coating composition

A technology of composition and paint, applied in the direction of coating, primer, etc.

Pending Publication Date: 2022-06-24
PPG COATINGS EURO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is desirable to reduce or eliminate the use of chromium and / or other heavy metals, since their use creates waste streams that cause environmental concerns and disposal issues

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0109] Preparation of GMA / acrylic resin

[0110] An epoxy functional acrylic adhesive formed from glycidyl methacrylate and styrene was synthesized. The polymerization was carried out in a 2 L, 4 neck reaction flask equipped with heating, cooling, thermocouple, reflux condenser stirring and cooling via motor driven steel stirring blades. A stream of nitrogen was applied to the reaction flask at a rate of 0.2 standard cubic feet (scft) per minute to provide an inert atmosphere. 27.41 parts by weight of A-100 and 0.2 parts by weight of Dowanol PM glycol ether (available from The Dow Chemical Company) were added to the reaction flask and heated to 158°C. Then 4.09 parts by weight of di-tert-amyl peroxide and 6.13 parts by weight of Dowanol PM glycol ether (available from The Dow Chemical Company) were added to the reaction flask over 180 minutes, followed by 55.21 parts over 150 minutes Parts by weight of styrene and 6.13 parts by weight of glycidyl methacrylate. The reaction ...

Embodiment 2-5

[0113] Example primer coating formulations according to the invention (Examples 2, 3, 4 and 5) and Comparative Examples 1 and 2 were prepared as shown in Table 1 below. All amounts are given in parts by weight. The coatings were prepared as typical two-component ("2K") compositions. The two premixed pigmented components (one containing the epoxy functional acrylic adhesive and the other a crosslinker) were mixed together with a pneumatic air mixer at medium speed to mix the container. Homogenize for 1-2 minutes.

[0114] Table 1

[0115]

[0116] 1 68.4% solids

[0117] 2 Ancamine 2569, 90% solids, available from Air Products and Chemicals, Inc.

[0118] 3 Ancamine 2432, 100% solids, available from Air Products and Chemicals, Inc.

[0119] 4 Ancamine K-54, 100% solids, available from Air Products and Chemicals, Inc.

[0120] 5 Epon 828 from Momentive Performance Materials Inc.

[0121] 6 Epon™ 8111 from Momentive Performance Materials Inc.

[0122] 7Magnesium...

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Abstract

A topcoat primer coating composition comprising: i) a solvent-based epoxy-functional acrylic binder formed from a glycidyl methacrylate and at least one additional ethylenically unsaturated monomer; and ii) a cross-linking agent comprising a polyamine. In addition, the invention relates to a coating system comprising the topcoat primer coating composition and the topcoat coating composition.

Description

[0001] This application is a divisional application whose filing date is May 5, 2015, the application number is 201580031531.X, and the invention name is "coating composition". technical field [0002] The present invention relates to a coating composition. In particular, the present invention relates to a primer coating composition, especially a primer coating composition for marine vessels, marine structures or aircraft. Background technique [0003] Coating systems deposited on substrates experience damage from the environment. For example, corrosion of metal substrates such as marine vessels, marine structures or aircraft can occur when the substrate is exposed to oxygen and / or water. A "primer" coating is often used to protect substrates from corrosion and other problems. The primer layer can be applied directly to the substrate or the substrate can first be pretreated. Pretreatment is often used to passivate metal substrates and improve corrosion resistance. The pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/14C09D5/00
CPCC09D4/00C09D133/06C08F220/325C09D7/65C08K3/22C08K5/5415C08L79/02C09D5/002C09D5/084C09D133/068C08F212/08C09D125/14
Inventor K·奥尔森K·V·D·科尔克V·卡尔萨尼M·玛尤
Owner PPG COATINGS EURO