CN102363684B

CN102363684B - Aqueous two-component white priming paint and preparation method thereof

Info

Publication number: CN102363684B
Application number: CN 201110180497
Authority: CN
Inventors: 吕跃文
Original assignee: CHENGDU BEIDA COATING Co Ltd
Current assignee: CHENGDU BEIDA COATING Co Ltd
Priority date: 2011-06-30
Filing date: 2011-06-30
Publication date: 2013-02-13
Anticipated expiration: 2031-06-30
Also published as: CN102363684A

Abstract

The invention mainly relates to a priming paint, and concretely relates to an aqueous two-component white priming paint. The invention provides an aqueous two-component white priming paint which treats water as a solvent or a dispersion medium and is used for substituting solvent-based PU (polyurethane). The aqueous two-component white priming paint is prepared through mixing a component A and a component B according to a weight ratio of 1:0.2-0.3, wherein the component A comprises a polyacrylic acid polyol anti-settling agent, a semi-finished product white slurry, an antifoaming agent, a pigment, a filler, a leveling agent, a film forming assistant and water; and the component B is composed of an anion modified HDI polyisocyanate. The aqueous two-component white priming paint is mainly characterized in that: the aqueous two-component white priming paint solves problems that the imperfect emulsification of polyacrylic acid polyol and the anion modified HDI polyisocyanate under low shearing force is not easy for mixing, paint diseases of paint film unevenness, performance decrease after a period of time, no adhesion, and the like caused by the migration of an unbound emulsifier in a coating.

Description

Aqueous two-component white priming paint and preparation method thereof

Technical field

What the present invention relates to is a kind of aqueous priming paint and preparation method thereof, specifically refers to aqueous two-component white priming paint and preparation method thereof.

Background technology

Traditional solvent bottom paint all has the hazardous solvents such as toxicity, benzene class and free TDI etc., and the user is had injury.And polyacrylic acid polyvalent alcohol and anion-modified HDI polyisocyanates can't perfect emulsification under low-shearing power, is difficult for mixing.The emulsifying agent of bonding does not move in coating and causes that paint film is inhomogeneous, degradation after for some time, do not have sticking power.

Summary of the invention

The object of the present invention is to provide and a kind ofly guarantee polyacrylic acid polyvalent alcohol and the perfect emulsification under low-shearing power of anion-modified HDI polyisocyanates, be easy to mix and the emulsifying agent group is connected on the polymer chain and evenly and distributes, make coating have the aqueous two-component white priming paint of permanent stability.

Technical scheme of the present invention is as follows:

Aqueous two-component white priming paint is that component A and the B component of 1 ︰ 0.2～0.3 forms by weight ratio mainly, and wherein, component A is comprised of the material of following weight percent:

Polyacrylic acid polyvalent alcohol 50%～60%

Anti-settling agent 0.1%～0.5%

The white slurry 20%～25% of work in-process

Defoamer 0.1%～0.5%

Pigment 5.0%～13.0%

Filler 5.0%～13.0%

Flow agent 0.1%～0.5%

Film coalescence aid 0.1%～2.0%

Water 1.0%～5.0%

B component is anion-modified HDI polyisocyanates.

In order better to realize that the present invention, described defoamer are this BYK 028 type defoamer of DF1181 type defoamer, Japanese NOPCO SN 154 type defoamers or German Bi Ke of hamming; Described flow agent is the high Tego 410 type flow agents of the BYK 346 type flow agents of the EFKA 3750 type flow agents of EFKA, German Bi Ke, Japanese NOPCO SN 612 type flow agents or enlightening.

The white slurry of work in-process among the described component A is comprised of the material of following weight percent:

Polyacrylic acid polyvalent alcohol 45%～60%

Dispersion agent 2.0%～3.0%

Anti-settling agent 1.0%～2.0%

Titanium dioxide 35%～50%

Water 1.0%～5.0%.

Further, described dispersion agent is the high Tego D168 type dispersion agent of the BYK 194 type dispersion agents of German Bi Ke, Japanese NOPCO SN 126 type dispersion agents or enlightening.

The preparation method of aqueous two-component white priming paint mainly comprises following preparation process:

At first be the preparation process of the white slurry of work in-process:

(1) adding successively weight percent in the stirred vessel is 45%～60% polyacrylic acid polyvalent alcohol, 2.0%～3.0% dispersion agent, 1.0%～2.0% anti-settling agent, stirs under the agitation condition of stirred vessel 600～800r/min;

(2) continue under the agitation condition of 600～800r/min, slowly add weight percent and be 35%～50% titanium dioxide, and clean this stirred vessel with 1.0%～5.0% water, adjust viscosity and arrive 120KU～130KU;

(3) under the agitation condition of 600～800r/min, stir 10min, and be ground to fineness with shredder and get final product less than 15 μ m;

Next is the preparation process of component A:

(1) regulates stirred vessel rotating speed to 600～800r/min, add successively weight percent in the stirred vessel and be that 50%～60% polyacrylic acid polyvalent alcohol, 0.1%～0.5% anti-settling agent, 20%～25% work in-process are starched in vain, 0.1%～0.5% defoamer, stir;

(2) slowly adding weight percent under the agitation condition of 600～800r/min is 5.0%～13.0% pigment, 5.0%～13.0% filler;

(3) regulate stirred vessel rotating speed to 1200～1500r/min, stir 10～15min;

(4) continue under stirred vessel 1200～1500r/min rotating speed, adding successively weight percent is 0.1%～0.5% flow agent, 0.1%～2.0% film coalescence aid;

(5) under the agitation condition of 600～800r/min, stir, and clean stirred vessel with 1.0%～5.0% water, viscosity is adjusted to 120KU～130KU get final product;

The preparation of painting product at last:

During use, be that the ratio of 1 ︰ 0.2～0.3 adds water and stirs and get final product by weight with component A and B component; B component is anion-modified HDI polyisocyanates.

The present invention has the following advantages and beneficial effect:

1, the present invention is take water as solvent or the coating of dispersion medium, and it has important environment protection significance, asepsis environment-protecting, and the hazardous solvent such as containing benezene does not contain free TDI.

2, polyacrylic acid polyvalent alcohol of the present invention and the perfect emulsification of the energy of anion-modified HDI polyisocyanates under low-shearing power are easy to mix.

3, the present invention has guaranteed that the emulsifying agent group is connected on the polymer chain and evenly distribution, makes coating have permanent stability.

4, the present invention has excellent gloss and outward appearance, and stain resistance and chemical moral character are excellent, xanthochromia, antirust, high temperature resistant not, can with the simultaneously construction of other paint such as emulsion paint.

Embodiment

The present invention is described further below in conjunction with embodiment, but embodiments of the present invention are not limited to this.

Embodiment 1

At first, the preparation work in-process are starched in vain;

The white slurry of work in-process is that the LA530 type anti-settling agent of Bayhydrol A145 type polyacrylic acid polyvalent alcohol, 2.5% Japanese NOPCO SN 126 type dispersion agents, 1.5% the Supreme Being Si Balong of 50% Bayer A.G, the R706 type titanium dioxide of 45% Du Pont, 1% water form by weight percent.

The preparation method of the white slurry of work in-process:

(1) adding successively weight percent in the stirred vessel is 50% polyacrylic acid polyvalent alcohol, 2.5% dispersion agent, 1.5% anti-settling agent, stirs under the agitation condition of stirred vessel 800r/min;

(2) continue under the agitation condition of 800r/min, slowly add weight percent and be 45% titanium dioxide, and clean this stirred vessel with 1% water, adjust viscosity and arrive 120KU;

(3) under the agitation condition of 800r/min, stir 10min, and be ground to fineness with shredder and get final product less than 15 μ m;

Secondly, preparation component A;

Component A by weight percent is that LA530 type anti-settling agent, 23% the work in-process of Bayhydrol A145 type polyacrylic acid polyvalent alcohol, 0.3% the Supreme Being Si Balong of 55% Bayer A.G are starched in vain, this EFKA 3750 type flow agents, the alcohol ester-12 type film coalescence aid of 1% Yi Shiman, 2% water of CC200 type filler, 0.4% EFKA of R902 type pigment, 9% Pu Sideng of DF1181 type defoamer, 9% Du Pont of 0.3% hamming form.

The preparation process of component A:

(1) regulates the stirred vessel rotating speed to 800r/min, add successively weight percent in the stirred vessel and be that 55% polyacrylic acid polyvalent alcohol, 0.3% anti-settling agent, 23% work in-process are starched in vain, 0.3% defoamer, stir;

(2) slowly adding weight percent under the agitation condition of 800r/min is 9% pigment, 9% filler;

(3) regulate the stirred vessel rotating speed to 1500r/min, stir 13min;

(4) continue under stirred vessel 1500r/min rotating speed, adding successively weight percent is 0.4% flow agent, 1% film coalescence aid;

(5) under the agitation condition of 800r/min, stir, and clean stirred vessel with 2% water, viscosity is adjusted to 120KU～130KU get final product;

B component is anion-modified HDI polyisocyanates.

At last, during use, only need be that the ratio of 1 ︰, 0.2 ︰ 0.5 mixes component A, B component and water by weight, can construct after leaving standstill 10min, the ratio of water can adjust according to user's requirement herein.Various test parameters by the prepared product of above raw material are as shown in table 1.

Embodiment 2

The difference of present embodiment and embodiment 1 is in the white slurry of work in-process the type of flow agent, defoamer in the dispersion agent type and component A, form the weight percent of the white slurry of work in-process and each material of component A, and the weight ratio of component A, B component and water when using at last.Present embodiment is consistent with the method that embodiment 1 adopts.

The white slurry of work in-process is that the LA530 type anti-settling agent of Bayhydrol A145 type polyacrylic acid polyvalent alcohol, 3% Japanese NOPCO SN 126 type dispersion agents, 2.0% the Supreme Being Si Balong of 52% Bayer A.G, the R706 type titanium dioxide of 40% Du Pont, 3% water form by weight percent.

Component A by weight percent be that 50% polyacrylic acid polyvalent alcohol, 0.4% anti-settling agent, 25% work in-process are starched in vain, this BYK 346 type flow agents, the alcohol ester-12 type film coalescence aid of 2% Yi Shiman, 4% water of CC200 type filler, 0.5% German Bi Ke of R902 type pigment, 5% Pu Sideng of DF1181 type defoamer, 13% Du Pont of 0.1% hamming form.

B component is anion-modified HDI polyisocyanates.

At last, during use, only need be that the ratio of 1 ︰, 0.3 ︰ 0.2 mixes component A, B component and water by weight, can construct after leaving standstill 10min, the ratio of water can adjust according to user's requirement herein.Various test parameters by the prepared product of above raw material are as shown in table 1.

Embodiment 3

The white slurry of work in-process is that the LA530 type anti-settling agent of BYK 194 type dispersion agents, 1.0% the Supreme Being Si Balong of Bayhydrol A145 type polyacrylic acid polyvalent alcohol, 2% the German Bi Ke of 60% Bayer A.G, the R706 type titanium dioxide of 35% Du Pont, 2% water form by weight percent.

Component A by weight percent is that LA530 type anti-settling agent, 20% the work in-process of Bayhydrol A145 type polyacrylic acid polyvalent alcohol, 0.2% the Supreme Being Si Balong of 58% Bayer A.G are starched in vain, the CC200 type filler of the R902 type pigment of 0.5% Japanese NOPCO SN 154 type defoamers, 7% Du Pont, 11% Pu Sideng, 0.3% Japanese NOPCO SN 612 type flow agents, the alcohol ester-12 type film coalescence aid of 0.5% Yi Shiman, 2.5% water form.

B component is anion-modified HDI polyisocyanates.

At last, during use, only need be that the ratio of 1 ︰, 0.2 ︰ 0.4 mixes component A, B component and water by weight, can construct after leaving standstill 10min, the ratio of water can adjust according to user's requirement herein.Various test parameters by the prepared product of above raw material are as shown in table 1.

Embodiment 4

The white slurry of work in-process is that the LA530 type anti-settling agent of the high Tego D168 type dispersion agent of Bayhydrol A145 type polyacrylic acid polyvalent alcohol, 3% the enlightening of 50% Bayer A.G, 1.0% Supreme Being Si Balong, the R706 type titanium dioxide of 42% Du Pont, 4% water form by weight percent.

Component A by weight percent is that LA530 type anti-settling agent, 20% the work in-process of Bayhydrol A145 type polyacrylic acid polyvalent alcohol, 0.5% the Supreme Being Si Balong of 60% Bayer A.G are starched in vain, the CC200 type filler of the R902 type pigment of the BYK 028 type defoamer of 0.5% German Bi Ke, 5% Du Pont, 7% Pu Sideng, 0.5% Japanese NOPCO SN 612 type flow agents, the alcohol ester-12 type film coalescence aid of 1.5% Yi Shiman, 5% water form.

B component is anion-modified HDI polyisocyanates.

At last, during use, only need be that the ratio of 1 ︰, 0.2 ︰ 0.1 mixes component A, B component and water by weight, can construct after leaving standstill 10min, the ratio of water can adjust according to user's requirement herein.Various test parameters by the prepared product of above raw material are as shown in table 1.

Embodiment 5

The white slurry of work in-process is that the LA530 type anti-settling agent of the high Tego D168 type dispersion agent of BYK 194 type dispersion agents, 1% the enlightening of Bayhydrol A145 type polyacrylic acid polyvalent alcohol, 1% the German Bi Ke of 57% Bayer A.G, 1.5% Supreme Being Si Balong, the R706 type titanium dioxide of 38% Du Pont, 1.5% water form by weight percent.

Alcohol ester-12 type the film coalescence aid of the Tego 410 type flow agents that component A by weight percent is that LA530 type anti-settling agent, 21% the work in-process of Bayhydrol A145 type polyacrylic acid polyvalent alcohol, 0.1% the Supreme Being Si Balong of 53% Bayer A.G are starched in vain, this CC200 type filler, 0.1% the enlightening of R902 type pigment, 13% Pu Sideng of DF1181 type defoamer, 11% Du Pont of 0.1% hamming is high, 0.7% Yi Shiman, 1% water form.

B component is anion-modified HDI polyisocyanates.

Table 1

Test event

Technical requirements

Solvent type coating

Embodiment 1

Embodiment 2

Embodiment 3

Embodiment 4

Embodiment 5

The dispersion agent type

Nothing

Traditional dispersion agent

Japan NOPCO SN 126 type dispersion agents

The BYK 194 type dispersion agents of Germany Bi Ke

The Tego D168 type dispersion agent that enlightening is high

The high Tego D168 type dispersion agent of BYK 194 type dispersion agents, enlightening of Germany Bi Ke

Type of anti-foam agent

Nothing

Traditional defoamer

This DF1181 type defoamer of hamming

Japan NOPCO SN 154 type defoamers

The BYK 028 type defoamer of Germany Bi Ke

This DF1181 type defoamer of hamming

The flow agent type

Nothing

Traditional flow agent

The EFKA 3750 type flow agents of EFKA

The BYK 346 type flow agents of Germany Bi Ke

Japan NOPCO SN 612 type flow agents

The Tego 410 type flow agents that enlightening is high

Whether contain the organic solvents such as benzene

Nothing

Contain

Do not contain

Paint film appearance

Smooth smooth

Sticking power

≤ 1 grade

1 grade

0 grade

Levelling property

Good

Generally

Good

Excellent

Can accept

Defoaming

Good

Can accept

Generally

Good

Generally

Pencil hardness

≥HB

HB

H

Chemical-resistant

2h passes through

Excellent

Grinability

≤50μm

Good

VOC,g/L

Nothing

Less than 580

Less than 200

Surface drying min

Nothing

10~20

The tack-free time

Nothing

2~4

Can be drawn by above data, coating of the present invention does not only contain the organic solvents such as benzene, and its sticking power is good, hardness is higher, levelling property is good, wear resisting property is better, and has good physical and mechanical properties and chemical resistance preferably.And polyacrylic acid polyvalent alcohol and the perfect emulsification under low-shearing power of anion-modified HDI polyisocyanates in the manufacturing processed, be easier to mix and this emulsifying agent group is connected on the polymer chain and evenly and distributes, make coating have the aqueous two-component white priming paint of permanent stability.

As mentioned above, just can realize preferably the present invention.

Claims

1. aqueous two-component white priming paint is characterized in that: be that component A and the B component of 1 ︰ 0.2～0.3 forms by weight ratio mainly, wherein, component A is comprised of the material of following weight percent:

Polyacrylic acid polyvalent alcohol 50%～60%

Anti-settling agent 0.1%～0.5%

The white slurry 20%～25% of work in-process

Defoamer 0.1%～0.5%

Pigment 5.0%～13.0%

Filler 5.0%～13.0%

Flow agent 0.1%～0.5%

Film coalescence aid 0.1%～2.0%

Water 1.0%～5.0%

B component is anion-modified HDI polyisocyanates;

Polyacrylic acid polyvalent alcohol 45%～60%

Dispersion agent 2.0%～3.0%

Anti-settling agent 1.0%～2.0%

Titanium dioxide 35%～50%

Water 1.0%～5.0%.

2. the preparation method of an aqueous two-component white priming paint mainly comprises following preparation process:

(1) preparation process of the white slurry of work in-process:

Adding successively weight percent in the stirred vessel is 45%～60% polyacrylic acid polyvalent alcohol, 2.0%～3.0% dispersion agent, 1.0%～2.0% anti-settling agent, stirs under the agitation condition of stirred vessel 600～800r/min;

Continuation slowly adds weight percent and is 35%～50% titanium dioxide under the agitation condition of 600～800r/min, and cleans this stirred vessel with 1.0%～5.0% water, adjusts viscosity to 120KU～130KU;

Under the agitation condition of 600～800r/min, stir 10min, and be ground to fineness with shredder and get final product less than 15 μ m;

(2) preparation process of component A:

Regulate stirred vessel rotating speed to 600～800r/min, add successively weight percent in the stirred vessel and be that 50%～60% polyacrylic acid polyvalent alcohol, 0.1%～0.5% anti-settling agent, 20%～25% work in-process are starched in vain, 0.1%～0.5% defoamer, stir;

Slowly adding weight percent under the agitation condition of 600～800r/min is 5.0%～13.0% pigment, 5.0%～13.0% filler;

Regulate stirred vessel rotating speed to 1200～1500r/min, stir 10～15min;

Continuation is under stirred vessel 1200～1500r/min rotating speed, and adding successively weight percent is 0.1%～0.5% flow agent, 0.1%～2.0% film coalescence aid;

Under the agitation condition of 600～800r/min, stir, and clean stirred vessel with 1.0%～5.0% water, viscosity is adjusted to 120KU～130KU get final product;

(3) be at last the preparation of painting product: