Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Polyaspartic coating composition, coating film, and coated article

A polyaspartic acid and aspartic acid ester technology, used in polyurea/polyurethane coatings, polyamide coatings, anti-corrosion coatings, etc., to achieve the effects of excellent chemical resistance, excellent weather resistance, and maintaining dryness

Active Publication Date: 2019-10-25
ASAHI KASEI KK
View PDF10 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of aromatic polyurea coating compositions is that the yellowing of the coating film under exposure to ultraviolet light is greatly reduced, and it has been used in a wide range of applications such as various coatings, flooring materials, and waterproofing materials.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Polyaspartic coating composition, coating film, and coated article
  • Polyaspartic coating composition, coating film, and coated article
  • Polyaspartic coating composition, coating film, and coated article

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0324] Hereinafter, although an Example demonstrates this embodiment in more detail, this embodiment is not limited to these Examples. Hereinafter, methods for measuring various physical properties and various evaluations will be described. In addition, "part" and "%" mean "part by mass" and "% by mass" unless otherwise specified.

[0325] (Physical properties 1) NCO content (mass%)

[0326] The NCO content (isocyanate content, mass %) of the polyisocyanate was measured as follows. Accurately weigh (Wg) 1-3 g of the polyisocyanate produced by the production example in the Erlenmeyer flask, add 20 mL of toluene, and dissolve the polyisocyanate completely. Thereafter, 10 mL of a toluene solution of 2 equivalents of di-n-butylamine was added, mixed completely, and then left to stand at room temperature for 15 minutes. Furthermore, 70 mL of isopropanol was added to this solution, and it mixed completely. Titrate the solution with 1 N hydrochloric acid solution (factor F) using...

manufacture example 1-1

[0399] A 4-necked flask equipped with a stirrer, a thermometer, a reflux condenser, a nitrogen blowing tube, and a dropping funnel was made into a nitrogen atmosphere, and 100 parts of HDI were put into it, and the temperature in the reactor was kept at 60° C. while stirring. 0.15 parts of a solution obtained by diluting tetrabutylammonium acetate, an isocyanurate reaction catalyst, to 10% by mass with 2-ethyl-1-hexanol was added thereto, and the isocyanurate reaction was carried out. When the NCO content of the liquid became 43.8% by mass, phosphoric acid was added to stop the reaction. Thereafter, the reaction solution was kept at 90° C. for 1 hour. After the cooled reaction solution was filtered, the unreacted HDI was removed with a thin film evaporation tank. The obtained NCO content is 23.1% by mass, the viscosity at 25°C is 1350mPa.s, the number average molecular weight is 590, the average number of isocyanate groups is 3.2, the mass concentration of HDI monomer is 0.1%...

manufacture example 1-2

[0401] Make a nitrogen atmosphere in the 4-neck flask equipped with a stirrer, a thermometer, a reflux condenser, a nitrogen blowing pipe, and a dropping funnel, and drop 100 parts of HDI and 33.7 parts of polycaprolactone triol with a number average molecular weight of 850, and react under stirring. The temperature in the vessel was kept at 95° C. for 90 minutes to carry out the urethanization reaction. After the cooled reaction solution was filtered, the unreacted HDI was removed with a thin film evaporation tank. The obtained NCO content is 9.0% by mass, the viscosity at 25°C is 4980mPa.s, the number average molecular weight is 1520, the average number of isocyanate groups is 3.3, the mass concentration of HDI monomer is 0.2% by mass, and the content of isocyanurate trimer is 0.0% by mass % of polyisocyanate P1-2.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
viscosityaaaaaaaaaa
viscosityaaaaaaaaaa
viscosityaaaaaaaaaa
Login to View More

Abstract

The present invention provides a polyaspartic coating composition which contains: (A) an aspartic acid ester compound represented by formula (I) [in the formula, X is an n-valent organic group, R1 andR2 are organic groups which are inert to isocyanate groups under the reaction conditions, and n is an integer of 2 or greater]; and (B) a polyisocyanate component obtained from a polyol containing apolycaprolactone polyol having a number average molecular weight of 500-1500, and from at least one diisocyanate monomer selected from the group consisting of aliphatic and alicyclic diisocyanates, wherein the proportion of the polycaprolactone polyol is 20 mass% or more, and the polyisocyanate component contains 10.0 mass% or less of an isocyanurate trimer.

Description

technical field [0001] The present invention relates to a polyaspartic acid coating composition, a coating film, and a coated article. [0002] This application claims priority based on Patent No. 2017-043141 filed in Japan on March 7, 2017 and Patent No. 2017-169741 filed in Japan on September 4, 2017, the contents of which are incorporated herein. Background technique [0003] The aliphatic polyaspartic acid coating composition in the polyurea coating composition is formed from an amino group-containing aspartic acid ester compound and an isocyanate group-containing aliphatic and / or alicyclic polyisocyanate composition. Aromatic polyurea coating compositions have been used in a wide range of applications such as various coatings, flooring materials, and waterproofing materials due to their greatly reduced yellowing of the coating film when exposed to ultraviolet rays, which has a disadvantage. [0004] The viscosity of the aspartic acid ester compound is lower than that o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/04B05D7/00B05D7/24B32B27/18B32B27/40C08G18/32C08G18/79
CPCB05D7/00B05D7/24B32B27/18B32B27/40C08G18/32C08G18/79C09D175/04C09D175/06C08G18/10C08G18/73C08G18/4277C08G18/792C08G18/022C08G18/092C08G18/7837Y02E10/72C09D5/08C09D177/04
Inventor 竹野聪志
Owner ASAHI KASEI KK
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com