Water-based paint composition and preparation method thereof

A water-based paint and composition technology, which is applied in antifouling/underwater paints, anti-corrosion paints, polyurea/polyurethane paints, etc., and can solve the problems of easy coalescence, difficult peeling, and adverse effects of paint film performance.

Active Publication Date: 2017-06-23
NIPPON PAINT GUANGZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the compatibility of hydrophobically modified montmorillonite in water-based paint systems is not good, it is difficult to peel off and easy to coalesce, which has a negative effect on the performance of the paint film

Method used

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  • Water-based paint composition and preparation method thereof
  • Water-based paint composition and preparation method thereof
  • Water-based paint composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0090] Intercalation modification of nano-montmorillonite, named 100A-MMT. Dissolve 35 grams of CYD-100A in 65 grams of deionized water to obtain a mother solution named 100A. Add 10 g of montmorillonite and 300 g of deionized water into a 500 ml round bottom bottle, heat to 60°C and stir thoroughly for 30 minutes, then add 10 g of 100A mother liquor dropwise. Continue to stir for 5 hours after the dropwise addition, then cool to room temperature, transfer to a centrifuge tube and centrifuge for 20 minutes, and remove the supernatant. Add deionized water to the precipitate to wash, centrifuge, repeat 5 times, and place in a vacuum drying oven to remove water to obtain the product.

Embodiment 2

[0092] Intercalation modification of nano-montmorillonite, named 100A-1HCl-MMT. Dissolve 35 grams of CYD-100A in 58.3 grams of deionized water, add 6.7 grams of hydrochloric acid (37%) dropwise and fully stir for 30 minutes, The obtained mother liquor was named 100A-1HCl. Add 10 grams of montmorillonite and 300 grams of deionized water into a 500 ml round bottom bottle, heat to 60 degrees Celsius and stir thoroughly for 30 minutes, then add 10 grams of 100A-1HCl mother liquor dropwise. Continue to stir for 5 hours after the dropwise addition, then cool to room temperature, transfer to a centrifuge tube and centrifuge for 20 minutes, and remove the supernatant. Add deionized water to the precipitate to wash, centrifuge, repeat 5 times, and place in a vacuum drying oven to remove water to obtain the product.

Embodiment 3

[0094] Intercalation modification of nano-montmorillonite, named 100A-2HCl-MMT. 35 g of CYD-100A was dissolved in 51.7 g of deionized water, 13.3 g of hydrochloric acid (37%) was added dropwise and fully stirred for 30 minutes to obtain a mother liquor named 100A-2HCl. Add 10 g of montmorillonite and 300 g of deionized water into a 500 ml round bottom bottle, heat to 60°C and stir thoroughly for 30 minutes, then add 10 g of 100A-2HCl mother liquor dropwise. Continue to stir for 5 hours after the dropwise addition, then cool to room temperature, transfer to a centrifuge tube and centrifuge for 20 minutes, and remove the supernatant. Add deionized water to the precipitate to wash, centrifuge, repeat 5 times, and place in a vacuum drying oven to remove water to obtain the product.

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PUM

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Abstract

The invention discloses a water-based paint composition, which comprises branchlike or hyperbranched polyamine of which at least one part of amino end group is cationized, clay and a film-forming matter, wherein the film-forming matter comprises at least one emulsion polymer, wherein at least one part of the branchlike or hyperbranched polyamine of which at least one part of amino end group is cationized is intercalated into a clay layer. The water-based paint composition is good in compatibility among various components, and the formed paint film has higher gel content and improved mechanical property, barrier property, scrub resistance and the decay resistance. The invention further discloses a preparation method of the water-based paint composition.

Description

technical field [0001] The present invention relates to coating compositions. More specifically, it relates to a water-based coating composition and a preparation method thereof. Background technique [0002] Both dendrimers and hyperbranched polymers are highly branched polymers with nanoscale three-dimensional branched structures. It is generally considered that the dendritic molecular structure is very regular, with a molecular mass distribution M w / M n The molecular structure is close to or equal to 1, but the synthesis steps are usually cumbersome. Compared with dendritic polymers, hyperbranched polymers are less regular and have a wider molecular mass distribution, usually 1.2<M w / M n <2.5, because it has a similar structure to dendrimer, so the performance is also close. However, the synthesis method of hyperbranched polymers is simple, and generally can be synthesized by one-step polymerization. Dendritic polymers and hyperbranched polymers have a comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/14C09D5/08C09D5/14C09D7/12
CPCC08K2201/011C08K2201/014C08L2312/00C09D5/08C09D5/14C09D7/61C09D7/65C09D125/14C09D133/14C09D175/04C08L87/00C08K9/08C08K7/00C08K3/346C08K9/02C08L75/04C08K13/02C08K2003/2241C08K3/34
Inventor 熊绍泊唐晌李海荣汪少锋
Owner NIPPON PAINT GUANGZHOU
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