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Bleeding-resistant waterborne wood sealing primer

A sealing primer and anti-bleeding technology, applied in the field of primers, can solve the application range of anti-bleeding additives, the comprehensive effect is not ideal, the anti-bleeding additives and the anti-bleeding emulsion are not well combined, and the system is affected. Storage stability and other issues, to achieve good anti-bleeding effect, good physical barrier effect, good water resistance effect

Active Publication Date: 2014-03-19
紫荆花制漆(成都)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, anti-bleeding additives are specific and can only interact with a certain type of bleeding substances, but the pigments in wood are diverse, so the application range and comprehensive effect of using anti-bleeding additives alone are not ideal
Although the sealing primer made by using cationic emulsion alone is the best comprehensive solution to prevent the seepage of various types of colored substances, it can block the main bleeding substances such as tannic acid on wood with severe bleeding. capacity is still limited
(2) There is no good combination between the anti-bleeding additive and the anti-bleeding emulsion in most formulations, and the interaction between the two can easily affect the storage stability of the system, so there is still room for improvement in the realization of the anti-bleeding performance of the coating space
However, due to the influence of pigments and fillers in the solid color paint system, the compactness of the paint film is worse than that of the varnish system, so the blocking effect on tannic acid will also be reduced

Method used

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  • Bleeding-resistant waterborne wood sealing primer
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  • Bleeding-resistant waterborne wood sealing primer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-8

[0047] Examples 1-8 used cationic acrylic emulsion AC-146 from Picassian polymers company, and the formula is shown in Table 1. Wherein embodiment 1,5,7 is the prescription without adding auxiliary agent, and it is as the comparative example of the present invention.

[0048] Table 1

[0049]

[0050]

Embodiment 9

[0052] Embodiment 9-embodiment 13 adopts the cation-modified acrylic acid copolymer dispersion of Interpolymer company 6305, the formula is shown in Table 2. Wherein embodiment 9 is the prescription that does not add auxiliary agent, and it is as the comparative example of the present invention.

[0053] Table 2

[0054]

[0055]

Embodiment 14

[0057] Example 14-Example 16 used Cytec's epoxy ester resin DUROXYN VEF2406w / 45WA, and the formula is shown in Table 3. Wherein embodiment 14 is the prescription that does not add auxiliary agent, and it is as the comparative example of the present invention.

[0058] table 3

[0059]

[0060]

[0061] The preparation methods of the above-mentioned examples are as follows: (1) Add material 1 into the container under the shutdown state; under medium-speed stirring state, mix 2 and 3 according to the formula amount, and then slowly add;

[0062] (2) According to the ratio, wash the film-forming aid stirring container with 4, add it slowly, and stir at a medium speed for 5 minutes until the mixture is uniform;

[0063] (3) Add 5 and 6 in sequence under medium-speed stirring, and disperse at high speed for 15 minutes until there is no oil vortex;

[0064] (4) Add 7, 8, 9, and 10 under medium-speed stirring, and continue to disperse for 10 minutes to make the system uniform...

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Abstract

The invention relates to a bleeding-resistant waterborne wood sealing primer. The bleeding-resistant waterborne wood sealing primer comprises the following components in parts by weight: 30-80wt% of film forming matters, 1-5wt% of film-forming additive, 1-10wt% of bleeding-resistant additive, 0.1-2wt% of base material wetting agent, 10-60wt% of water and the balance of conventional additives. The bleeding-resistant waterborne wood sealing primer provided by the invention has excellent bleeding resistance.

Description

technical field [0001] The invention relates to a primer, in particular to an anti-bleeding water-based wood sealing primer. Background technique [0002] In recent years, water-based wood coatings have become a major development trend of wood coatings due to their outstanding environmental protection advantages, health and safety. However, in the process of painting water-based wood coatings, the problem of bleeding often occurs, that is, when painting solid-color water-based wood coatings, especially light-colored or white coatings, the paint film is easy to change color, which affects the appearance of the paint film. Therefore, how to effectively solve the above problems has become an important issue to improve the application universality of waterborne wood coatings. Common base materials that are easy to bleed mainly include: mahogany, cedar, walnut, sapele, oak, MDF, plywood, etc. [0003] The main reason for the bleeding phenomenon during the coating of water-based...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/00C09D163/00C09D7/12
Inventor 郝雁飞沈明月周米米汪盛藻陈松旭陈艳雄王莹莹
Owner 紫荆花制漆(成都)有限公司
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