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Reduced discoloration of polyaspartic resins blended with acrylate resins

An acrylate-based, aspartate-functional technology, applied in the field of coatings, can solve the problems of no physical drying, discoloration and yellowing of the liquid resin composition, and achieve the effect of reducing discoloration

Inactive Publication Date: 2021-06-11
COVESTRO LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of UV curing coatings is that there is no physical drying and may have so-called "zip" lines created by UV curing equipment
[0005] Commonly owned patent application U.S. Serial No. 15 / 626,267 (filed June 19, 2017) relates to a coating composition that reduces or eliminates the disadvantages of each system and avoids the formation of zip lines; however, the liquid resin described therein The composition appears to undergo discoloration (i.e. yellowing) on ​​aging

Method used

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  • Reduced discoloration of polyaspartic resins blended with acrylate resins
  • Reduced discoloration of polyaspartic resins blended with acrylate resins
  • Reduced discoloration of polyaspartic resins blended with acrylate resins

Examples

Experimental program
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preparation example Construction

[0050] Preparation of an amine of aspartate ester in the reaction, wherein R 1 R 2 R 3 R 4 As defined above (i) above.

[0051] Suitable polyamines are the diamine or triamine (examples include Jeffamine T-403 and NTA). Examples of suitable maleate or fumaroths are dimethyl maleate, diethyl maleate, dibutyl maleate, and corresponding fumarate.

[0052] In various embodiments, it is carried out by the above-described starting material to be carried out in a temperature range of 0 ° C to 100 ° C. The amount of starting material makes at least one of each primary amino group, preferably an ethylenically double bond. Any starting material used can be separated by distillation after the reaction. The reaction occurs in the presence or absence of a suitable solvent such as methanol, ethanol, propanol, dioxane or mixture thereof.

[0053] The aspartate functional amines suitable for use in the coating compositions of the present invention include U.S. Patent No. 5,126,170; 5,236,741, 5,4...

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Abstract

The present invention provides a coating composition comprising: 1% to 99% of a blend of two or more aspartic ester functional amines; 20% to 70% of an acrylate-containing compound; 0.01% to 5% of an alkyl carbodiimide; 0.1% to 5% of a photoinitiator; and 20% to 70% of one or more polyisocyanates, wherein the composition has reduced discoloration compared to the composition without the alkyl carbodiimide. The ready-to-apply coating produced from this composition may find use on substrates such as countertops and floors.

Description

Technical field [0001] The present invention generally relates to coatings, and more particularly to coating compositions containing an amino functional polyteenine ester-containing ammonia functional polyteenine-containing compound containing an acrylate compound, which exhibits reduced discoloration during aging. [0002] Inventory background [0003] As is known to those skilled in the art, the polyteenine coating has the following advantages: fast curing time, and thus rapidly recover; high film formation in a coating; good chemical resistance and solvent resistance; good Wear resistance; and the coating does not change yellow. Another advantage is that there may be 100% solid coating when using polyteenine coatings. Unfortunately, the polyteenine coating has a short operation time (less than 30 minutes) and high viscosity. [0004] On the other hand, the UV cured coating has the advantage that the curing time is fast, and thus rapidly recovers; high film formation in one coat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/38C08G18/73C08L75/04
CPCC08G18/3821C08G18/73C08L75/04C08L33/00C09D7/65C09D7/63C08K5/07C08L79/08C09D177/04C09D179/08
Inventor R·瓦德
Owner COVESTRO LLC