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Water-based bi-component white primer and preparation method thereof

A water-based two-component, white primer technology, used in biocide-containing paints, antifouling/underwater coatings, coatings, etc., can solve problems such as hardness not as good as PU paint, average drying speed, and average filling. , to achieve the effect of good sandability, ultra-low VOC content and improved storage stability

Inactive Publication Date: 2016-04-13
BEIJING ZHANCHEN CHEM +5
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent application (CN201010154767.1) a multifunctional water-based white primer and its preparation method, patent application (CN201010529886.0) density board edge-sealing water-based wood white primer and its preparation process all propose an environmentally friendly water-based white primer , but the solid content is less than 60%, the filling property is average, and the hardness is not as good as PU paint, so it can't be used as a topcoat directly after sealing once.
[0005] At present, the solid content of products used for fully enclosed white coating on fiberboards at home and abroad can only reach about 50%, and it cannot achieve the effect of directly applying topcoat after only one application of primer; and the drying speed is average, many days Only one coat of paint can be applied, and it takes 2-3 days or even longer from the start of construction to the completion of the top coat

Method used

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  • Water-based bi-component white primer and preparation method thereof
  • Water-based bi-component white primer and preparation method thereof
  • Water-based bi-component white primer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The composition of component A of the waterborne two-component white primer is shown in Table 1.

[0048] Table 1, embodiment 1A component composition:

[0049] Element

Weight (kg)

NeoCryl XK-102

250

DALPAD™ C

10

MV

2

BYK024

5

SN-154

6

Hydropalat 640A

20

SC1250 wollastonite powder

200

CC800 calcium carbonate

200

CF-38F barium white powder

180

SL25

15

FS204E

5

Deionized water

107

[0050] Preparation:

[0051] 1) First weigh 100kg water, 10kgDALPADTMC, 2kgMV, 5kgBYK024, 6kgSN-154, 20kgHydropalat640A into the dispersion tank and start stirring;

[0052] 2) Add 180kgCF-38F barium white powder, 200kgSC1250 wollastonite powder, 200kgCC800 calcium carbonate under medium-speed stirring, and disperse at 1200 rpm for 15 minutes at high speed;

[0053] 3) Add 250kg NeoCrylXK-102 and 5kgFS204E under medium-speed stirring, and s...

Embodiment 2

[0056] Embodiment 2: A component of waterborne two-component white primer

[0057] Table 2, embodiment 2A component composition

[0058]

[0059]

[0060] Preparation:

[0061] 1) First weigh 100kg water, 8kgTEXANOL, 3kgParmetolK20, 4kgBYK024, 8kgFoamster309A, 18kgSokalanPA30CL into the dispersion tank and start stirring;

[0062] 2) Add 180kg CF-38F barium white powder, 210kg SC1250 wollastonite powder, 190kg CMS-555 talc powder under medium speed stirring, and disperse at 1500 rpm for 15 minutes;

[0063] 3) Add 250kg Craymul2171 and 5kgzonylFS-610 under medium-speed stirring, and stir at 900 rpm for 10 minutes until uniform;

[0064] 4) Add 18kg SL25 and 6kg deionized water, stir evenly and adjust the viscosity to 90KU / 25°C, continue to stir at a medium speed for 5 minutes before submitting for inspection, filter and pack after passing the test.

[0065] B component: 40kg BURNOCKDNW-5500;

Embodiment 3

[0066] Embodiment 3: A component of waterborne two-component white primer

[0067] Table 3, embodiment 3A component composition:

[0068]

[0069]

[0070] Preparation:

[0071] 1) First weigh 100kg water, 6kgDALPADTMC, 4kgDB, 2kgPParmetolA28, 4kgBYK024, 6kgSN-154, 20kgTEGODispers750W into the dispersion tank, and start stirring;

[0072] 2) Add 180kgCF-38F barium white powder, 200kgSC1250 wollastonite powder, 50kgCMS-555 talc powder, 150kgCC800 calcium carbonate under medium speed stirring, and disperse at high speed for 15 minutes;

[0073] 3) Add 250kg AlberdingkAC31 and 6kg Surfynol104E under medium-speed stirring, and stir for 10 minutes at medium-speed until uniform;

[0074] 4) Add 15kg AQ870 and 6kg deionized water, stir evenly and adjust the viscosity to 87KU / 25°C, continue to stir at a medium speed for 5 minutes before submitting for inspection, filter and pack after passing the test.

[0075] B component: 30kgBayhydurXP2655;

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Abstract

The invention provides a water-based bi-component white primer. The water-based bi-component white primer comprises two components A and B, wherein the component A comprises the following components in parts by weight: 200-300 parts of water-based hydroxy acrylic resin, 1-4 parts of an in-tank fungicide, 10-25 parts of a wetting dispersant, 4-15 parts of a defoaming agent, 5-15 parts of a film-forming aid, 150-300 parts of wollastonite, 350-500 parts of fillings, 10-30 parts of a rheology controller, 5-10 parts of a base material wetting agent and 50-150 parts of water; the component B is a water-based polyisocyanate curing agent. The dually-curable water-based resin with high solid content and low hydroxyl value is utilized, is matched with the specific water-based polyisocyanate curing agent and is supplemented with the fillings including wollastonite and white barium powder to form a special thixotropic thickening system, so that the storage stability of products is improved, and the special thixotropic thickening system is excellent in construction performance, environmentally friendly and ultralow in VOC content and further has the characteristics of ultrahigh solid content, high drying speed and hardness, good collapse resistance, high crosslinking density, good solvent resistance and the like.

Description

technical field [0001] The invention relates to the field of coating compositions, in particular to an acrylic resin-based coating composition and a preparation method thereof. Background technique [0002] White coatings mostly use fiberboard as the base material. Fiberboard has the characteristics of looseness and easy oil absorption, which requires the coating used to have excellent filling performance. Saturated polyester (PE) paint. For example, the patent application number CN201410840886.0 discloses a kind of environmentally friendly PU high-gloss white primer with good sag resistance, low odor and high whiteness, and the patent application number CN201110234047.0 discloses a new type of high sealing property. The unsaturated polyester white primer and its preparation method, and the patent application number CN201410660977.6 propose an anti-cracking unsaturated polyester white primer. Although the above-mentioned coatings have good filling properties, they all cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/00C09D7/12C09D5/14
CPCC09D133/00C08L2205/035C09D5/14C09D7/61C09D7/63C09D7/65
Inventor 王德华陈寿生刘建平
Owner BEIJING ZHANCHEN CHEM
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