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Clear coating compositions and methods of forming clear coating compositions

A transparent coating and composition technology, applied in the field of aspartate transparent coating composition, capable of solving problems such as damage to the transparent coating

Pending Publication Date: 2020-02-11
AXALTA COATING SYST GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the paint gets scratched, the clear coat is damaged, at least from an aesthetic point of view

Method used

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  • Clear coating compositions and methods of forming clear coating compositions
  • Clear coating compositions and methods of forming clear coating compositions
  • Clear coating compositions and methods of forming clear coating compositions

Examples

Experimental program
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Effect test

Embodiment

[0044] E-coated panels were prepared with the clearcoat composition for scratch resistance testing. Specifically, Binder Part A and Activator Part B are mixed together to form a homogeneous solution. The homogeneous solution is then sprayed with a spray gun onto the e-coated panels, wherein each e-coated panel has a primer or sealant layer adjacent to the e-coat and a primer layer disposed thereon (e.g., water-based base coat). Spraying is done using a two coat process with a flash off of about 30 seconds between coats. After spraying, the clear coat composition was allowed to flash off for a period of about 3 minutes to about 5 minutes, and then the coated panels were placed in an oven operating at 110°F and baked for about 10 minutes. The coated panels were then aged for approximately two weeks to substantially fully cure the clearcoat composition before performing the scratch resistance test discussed in further detail below. A substantially fully cured clearcoat has a t...

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Abstract

Clear coating compositions and methods for forming the clear coating compositions are provided. In one example, a clear coating composition includes a binder portion A that includes polyaspartic esterresin. An activator portion B includes a polyol-modified isocyanate that is a reaction product of a polyisocyanate component and a polyol component. The polyol component includes polycaprolactone polyol. The clear coating compositions with improve scratching resistance are provided.

Description

technical field [0001] The technical field relates generally to coatings, and more particularly, to aspartate clearcoat compositions and methods for forming such clearcoat compositions. Background technique [0002] Compositions based on isocyanate chemistries can be used as components in coatings (eg, paints, primers, etc.). Isocyanate-based coating compositions may include, for example, polyurethane or polyurea coatings formed from resins that contain hydroxyl or amine functionality to react with isocyanates (eg, diisocyanates, polyisocyanates, etc.). These resins can be cured by various mechanisms resulting in the formation of covalent bonds between the resin components resulting in a crosslinked polymer network. [0003] Scratch resistance of coatings, especially clearcoat coatings covering such as primers and basecoats, whether for OEM or for refinish applications, has always been a challenge in the coatings industry. If the paint gets scratched, the clear coat is dam...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/06C08G18/42C08G18/64
CPCC09D175/06C08G18/4081C08G18/4277C08G18/6415C08G18/10C09D175/12C08G18/8058C08G18/3821C08G18/3256C08G18/792C08G18/6651C08G18/4623C08G18/73C08G18/3819C08G18/6633
Inventor 文梅伊恩·哈维
Owner AXALTA COATING SYST GMBH
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