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Aqueous nanometer inorganic oxide-organic hybrid coating composition and its application

A nano-inorganic and organic hybrid technology, applied in the field of coatings, to achieve the effect of improving stain resistance, increasing hydrophilicity, and changing the surface morphology of coatings

Inactive Publication Date: 2017-08-22
NIPPON PAINT CHINA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] Aiming at the compatibility and stability problems of the inorganic oxide-organic high polymer hybrid under the situation of high nanometer inorganic oxide content existing in the prior art, the present invention provides a kind of amphoteric hyperbranched polymer additive A Simple Approach to Solve the Compatibility and Stability Issues of Nanoscale Inorganic Oxide-Organic Hybrids

Method used

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  • Aqueous nanometer inorganic oxide-organic hybrid coating composition and its application
  • Aqueous nanometer inorganic oxide-organic hybrid coating composition and its application
  • Aqueous nanometer inorganic oxide-organic hybrid coating composition and its application

Examples

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Effect test

example 1

[0080] Example 1. Synthesis of amphoteric hyperbranched resin AMP1

[0081] 1A. Synthesis of Intermediate 1A

[0082] Under the protection of dry nitrogen, stir and heat H20 solid (100 parts) and DMM (50 parts) to 110-120 degrees for about 10-20 minutes. After forming an emulsion, add Capa (50 parts), and the resulting solution is heated to 130-140 degrees, heat preservation and stirring for about 1 hour until Capa is completely consumed (monitored by GC).

[0083] 1B. Synthesis of Hybrid Prepolymer 1B

[0084] Under dry air atmosphere and room temperature conditions, IPDI (1000.0 parts), DMM (866.9 parts), iron acetylacetonate (0.064 parts) and BHT (1.88 parts) were mixed and stirred uniformly. With full stirring, PFHE (525.9 parts), HEMA (230.0 parts) and MPEG750 solution (dissolved in DMM, 80% mass concentration, 1656.8 parts) were added slowly in sequence for about 30 minutes respectively. Finally, the temperature was raised to 40° C., the temperature was kept and the sti...

example 2

[0088] Example 2. Synthesis of amphoteric hyperbranched resin AMP2

[0089] 2A. Synthesis of Hybrid Prepolymer 2A

[0090] Under dry nitrogen atmosphere and room temperature conditions, with full stirring, EHA (33.14 parts), 80% by mass percentage MPEG750 DMM solution (132.50 parts) was added slowly in turn to IPDI (80.00 parts), DMM (56.00 parts) and iron acetylacetonate (0.009 parts) of the mixture, after about 60 minutes after the addition, the temperature was raised to 40° C. and the reaction was stirred for about 3 hours until the NCO% reached the theoretical value of 4.51%.

[0091] 2B. Synthesis of amphoteric hyperbranched polymer AMP2

[0092] Under a dry nitrogen atmosphere, the intermediate 1A (105.00 parts) prepared according to the example 1A was stirred and heated to about 70 degrees, and then the mixed prepolymer 2A (274.60 parts) prepared according to the example 2A and the catalyst K-KAT348 (0.14 parts ) stirring and adding, heating up to 80-90°C, insulated a...

example 3

[0094] Example 3. Synthesis of Amphoteric Hyperbranched Resin AMP3

[0095] 3A. Synthesis of Prepolymer 3A

[0096] Under dry nitrogen atmosphere and room temperature conditions, with sufficient stirring, the DMM solution (350.70 parts) of 80% by mass percentage MPEG750 is slowly added in the mixture of IPDI (75.60 parts), DMM (48.40 parts) and iron acetylacetonate (0.016 parts) , after about 45 minutes of addition, the temperature was raised to 40°C and the reaction was stirred for about 3 hours until the NCO% reached the theoretical value of 2.71%.

[0097] 3B. Synthesis of Intermediate 3B

[0098] Under a dry nitrogen atmosphere, the intermediate 1A (280.00 parts) prepared according to Example 1A was stirred and heated to about 70 degrees, and then the prepolymer 3A (435.40 parts) prepared according to Example 3A and catalyst K-KAT348 (0.075 parts) Stir and add, heat up to 80-90 degrees, keep warm and stir for about 3 hours, then cool down to room temperature and ripen fo...

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Abstract

The invention discloses an aqueous nanometer inorganic oxide-organic hybrid coating composition and its preparation method and application. The coating composition contains at least one aqueous film-forming organic high polymer, at least one nanometer inorganic oxide particle and at least one amphoteric hyperbranched resin. The invention provides a simple method for solving the problem of compatibility and stability of nanometer inorganic oxide-organic hybridization through an amphoteric hyperbranched polymer additive. Through introduction of the amphoteric hyperbranched resin in the coating composition, the compatibility of the nanometer inorganic oxide particles and the aqueous film-forming organic high polymer is improved so that the coating is not easily cracked at high nanometer inorganic oxide particle content. The surface morphology of the coating changes, the coating surface hydrophilicity is improved and the coating stain resistance is improved.

Description

technical field [0001] The invention relates to the field of coatings. More specifically, it relates to a water-based nano inorganic oxide-organic hybrid coating composition and its preparation method and application. Background technique [0002] Continuously improving the performance of coating compositions is a major mission of coating workers. Among them, water-based coatings with high weather resistance and high stain resistance have always been a challenge for the paint industry. In general, these properties can be enhanced by adding nanoscale inorganic oxide particles. However, the compatibility of nano-inorganic oxides and organic polymers and the stability of the composition have always been difficult problems to solve, and these two problems are more serious when the content of nano-inorganic oxide materials is high. The addition of high nanometer inorganic oxide particles can also lead to poor film formation and cracking. [0003] The general approach to solve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/00C09D187/00C09D7/12C09D5/16
CPCC09D133/00C08K2201/011C09D5/1687C08L87/00C08K13/02C08K3/36
Inventor 宋凯华志国林荣儿钟淑贞钟展业胡剑
Owner NIPPON PAINT CHINA
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