CN102367358A - Waterborne single-component full-glossy white finish and preparation method thereof - Google Patents

Abstract

The invention relates to a waterborne finish, and particularly relates to a waterborne single-component full-glossy white finish. A self chemical cross-linking reaction is performed on a poly-acrylic modified polyurethane and a waterborne polyurethane dispersion, and then a reaction product is mixed with a wetting agent, a thickening agent, a de-foaming agent, titanium white powder, a mildew preventive, a preservative, a rheological agent, film-forming auxiliaries and water, thereby generating a coating. The coating is characterized in that the coating has a solvent-based performance and contains the waterborne single-component full-glossy white finish which is environment-friendly, low-carbon, excellent in gloss and capable of solving the problem of inferior compatibility between a conventional waterborne finish and other waterborne systems.

Description

Full light white finish paint of aqueous one-component and preparation method thereof

Technical field

What the present invention relates to is a kind of aqueous finish paint, specifically is meant the full light white finish paint of aqueous one-component.

Background technology

Usually traditional solvent-borne type finish paint all contains hazardous solvent and free TDIs such as benzene class, and the person and environment are all had very big influence.And conventional water-miscible paint has and problem such as other water-based system consistencies are bad.

Summary of the invention

The purpose of this invention is to provide a kind of full light white finish paint of aqueous one-component that can solve conventional water-miscible paint and other water-based system consistency problem of poor.Realize that technical scheme of the present invention is following:

The full light white finish paint of aqueous one-component, form by following compositions in weight percentage:

Aqueous pu dispersions 40%～60%

Polyacrylic acid modified urethane 20%～40%

Wetting agent 0.1%～0.5%

Thickening material 1.0%～2.0%

Skimmer 0.1%～0.5%

White titanium pigment 9.0%～20.0%

Mould inhibitor 0.1%～0.5%

Sanitas 0.1%～0.5%

Rheological agent 0.1%～0.5%

Film coalescence aid 0.1%～2.0%

Water 1.0%～5.0%.

As a kind of preferred, the weight percent of said aqueous pu dispersions is 40%～50%, and the weight percent of said polyacrylic acid modified urethane is 20%～30%, and the weight percent of said white titanium pigment is 9.0%～15.0%.

In order better to realize the present invention, described wetting agent is selected from high Tego 902W type wetting agent, the BYK 156 type wetting agents of German Bi Ke or the EFKA 4759 type wetting agents of EFKA of ADS 6109 type wetting agents, enlightening of Hai Chuan; Described skimmer is selected from the high peaceful FOAMSTAR A10 skimmer of Tego 801 type skimmers or section of BYK 028 type skimmer, enlightening of German Bi Ke.

The preparation method of the full light white finish paint of a kind of aqueous one-component, its preparation process is following:

(1) under the stirring velocity of stirred vessel 600～800r/min; Adding weight percent successively is 40%～60% aqueous pu dispersions, 20%～40% polyacrylic acid modified urethane, 0.1%～0.5% wetting agent, 1.0%～2.0% thickening material, 0.1%～0.5% skimmer, stirs;

(2) under the stirring velocity of 600～800r/min, slowly add weight percent and be 9.0%～20.0% white titanium pigment;

(3) rotating speed to the 1200～1500r/min of adjusting stirred vessel is stirred to fineness smaller or equal to 10um;

(4) regulate the stirred vessel rotating speed; Under the agitation condition of stirred vessel 600～800r/min; Adding weight percent successively is 0.1%～0.5% mould inhibitor, 0.1%～0.5% sanitas, 0.1%～0.5% rheological agent, 0.1%～2.0% film coalescence aid, stirs;

(5) the use weight percent is this stirred vessel of water cleaning of 1.0%～5.0%, this viscosity is adjusted to 120KU～130KU get final product.

Compared with prior art, the present invention has the following advantages and beneficial effect:

1, invention is to be the coating of solvent or dispersion medium with water, asepsis environment-protecting, and hazardous solvent such as containing benezene does not contain free TDI.

2, the invention solves conventional water-miscible paint to the problem of timber wettability difference, with the bad phenomenon of other water-based system consistencies and emulsion can breakdown of emulsion under high-speed stirring maybe.

3, the present invention has excellent gloss and outward appearance, and stain resistance and chemical moral character are excellent, excellent mechanical property, can with other paint construction simultaneously such as rubber-emulsion paint, processing ease and variation.

Embodiment

Below in conjunction with embodiment the present invention is further specified, but embodiment of the present invention is not limited to this.

Embodiment 1

The full light white finish paint of aqueous one-component of the present invention is the AC 2782 type aqueous pu dispersions of 48% peace cutting edge of a knife or a sword by weight percent; The polyacrylic acid modified urethane of U9800 type of 28% Bayer; The ADS 6109 type wetting agents of 0.5% Hai Chuan; 1.5% ARM259 thickening material; The Tego 801 type skimmers that 0.5% enlightening is high; The R706 type white titanium pigment of 15.0% Du Pont; 0.5% PCTS BIOX CM type mould inhibitor; 0.5% PCTS BIOX VFB1 type sanitas; The BYK 346 type rheological agents of 0.5% German Bi Ke; The TM-3 type film coalescence aid of 1.0% sunrise chemical industry; 4.0% water is formed.

Prepare each component according to above weight percent, prepare according to following steps:

(1) in stirred vessel, adding weight percent successively is 48% aqueous pu dispersions, 28% polyacrylic acid modified urethane, 0.5% wetting agent, 1.5% thickening material, 0.5% skimmer, under the stirring velocity of 700r/min, stirs;

(2) under the stirring velocity of 700r/min, slowly add weight percent and be 15.0% white titanium pigment;

(3) rotating speed of regulating stirred vessel is stirred to fineness smaller or equal to 10um to 1400r/min;

(4) regulate the stirred vessel rotating speed, under the agitation condition of stirred vessel 700r/min, adding weight percent successively is 0.5% mould inhibitor, 0.5% sanitas, 0.5% rheological agent, 1.0% film coalescence aid, stirs;

(5) the use weight percent is this stirred vessel of water cleaning of 4.0%, this viscosity is adjusted to 120KU get final product.

During use, add full light white finish paint of this aqueous one-component and water, it is mixed, leave standstill and after bubble is eliminated, can construct in 10 minutes by weight the ratio that is 1 ︰ 0.3.Wherein, the consumption of water can adjust according to user's requirement.Various test parameters by the prepared product of above raw material are as shown in table 1.

Embodiment 2

Compare with embodiment 1, what the difference of present embodiment was the wetting agent employing is the high Tego 902W type wetting agent of enlightening, and what skimmer adopted is the peaceful FOAMSTAR A10 skimmer of section, and the weight percent of each component of present embodiment is different.

The full light white finish paint of the aqueous one-component of present embodiment is the AC 2782 type aqueous pu dispersions of 58% peace cutting edge of a knife or a sword by weight percent; The polyacrylic acid modified urethane of U9800 type of 30% Bayer; The Tego 902W type wetting agent that 0.2% enlightening is high; The AQUAFLOW NHS 300 type thickening materials of dragon are striden in 1.0% U.S. Asia; The FOAMSTAR A10 skimmer that 0.2% section is peaceful; The R706 type white titanium pigment of 9% Du Pont; 0.2% PCTS BIOX CM type mould inhibitor; 0.2% PCTS BIOX VFB1 type sanitas; The BYK 346 type rheological agents of 0.2% German Bi Ke; The TM-3 type film coalescence aid of 0.2% sunrise chemical industry; 1.0% water is formed.Various test parameters by the prepared product of above raw material are as shown in table 1.

Embodiment 3

Compare with embodiment 1, what the difference of present embodiment was the wetting agent employing is the BYK 156 type wetting agents of German Bi Ke, and the weight percent of each component of present embodiment is different.

The full light white finish paint of the aqueous one-component of present embodiment is the AC 2782 type aqueous pu dispersions of 54% peace cutting edge of a knife or a sword by weight percent; The polyacrylic acid modified urethane of U9800 type of 25% Bayer; The BYK 156 type wetting agents of 0.5% German Bi Ke; The AQUAFLOW NHS 300 type thickening materials of dragon are striden in 1.0% U.S. Asia; The Tego 801 type skimmers that 0.5% enlightening is high; The R706 type white titanium pigment of 12.0% Du Pont; 0.3% PCTS BIOX CM type mould inhibitor; 0.3% PCTS BIOX VFB1 type sanitas; The BYK 346 type rheological agents of 0.4% German Bi Ke; The TM-3 type film coalescence aid of 1.5% sunrise chemical industry; 2.5% water is formed.Various test parameters by the prepared product of above raw material are as shown in table 1.

Embodiment 4

Compare with embodiment 1, what the difference of present embodiment was the wetting agent employing is the high Tego 902W type wetting agent of enlightening, and what skimmer adopted is the BYK 028 type skimmer of German Bi Ke, and the weight percent of each component of present embodiment is different.

The full light white finish paint of the aqueous one-component of present embodiment is the AC 2782 type aqueous pu dispersions of 44% peace cutting edge of a knife or a sword by weight percent; The polyacrylic acid modified urethane of U9800 type of 30% Bayer; The Tego 902W type wetting agent that 0.4% enlightening is high; The AQUAFLOW NHS 300 type thickening materials of dragon are striden in 2.0% U.S. Asia; The BYK 028 type skimmer of 0.4% German Bi Ke; The R706 type white titanium pigment of 15.0% Du Pont; 0.4% PCTS BIOX CM type mould inhibitor; 0.4% PCTS BIOX VFB1 type sanitas; The BYK 346 type rheological agents of 0.4% German Bi Ke; The TM-3 type film coalescence aid of 2.0% sunrise chemical industry; 5.0% water is formed.Various test parameters by the prepared product of above raw material are as shown in table 1.

Embodiment 5

Compare with embodiment 1, what the difference of present embodiment was the wetting agent employing is the wetting agent of EFKA 4759, and the weight percent of each component is different.

The full light white finish paint of the aqueous one-component of present embodiment is the AC 2782 type aqueous pu dispersions of 42% peace cutting edge of a knife or a sword by weight percent; The polyacrylic acid modified urethane of U9800 type of 40% Bayer; The EFKA 4759 type wetting agents of 0.5% EFKA; The AQUAFLOW NHS 300 type thickening materials of dragon are striden in 2.0% U.S. Asia; The Tego 801 type skimmers that 0.5% enlightening is high; The R706 type white titanium pigment of 9.0% Du Pont; 0.1% PCTS BIOX CM type mould inhibitor; 0.1% PCTS BIOX VFB1 type sanitas; The BYK 346 type rheological agents of 0.1% German Bi Ke; The TM-3 type film coalescence aid of 0.7% sunrise chemical industry; 5.0% water is formed.Various test parameters by the prepared product of above raw material are as shown in table 1.

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Table 1

Test event

Technical requirements

The finish paint of conventional solvent type

Embodiment 1

Embodiment 2

Embodiment 3

Embodiment 4

Embodiment 5

Wetting agent

Do not have

Traditional wetting agent

The ADS 6109 type wetting agents of Hai Chuan

The Tego 902W type wetting agent that enlightening is high

The BYK 156 type wetting agents of Germany Bi Ke

The Tego 902W type wetting agent that enlightening is high

The EFKA 4759 type wetting agents of EFKA

Skimmer

Do not have

Traditional skimmer

The Tego 801 type skimmers that enlightening is high

The FOAMSTAR A10 skimmer that section is peaceful

The Tego 801 type skimmers that enlightening is high

The BYK 028 type skimmer of Germany Bi Ke

The Tego 801 type skimmers that enlightening is high

Paint film appearance

Smooth smooth

Smooth smooth

Smooth smooth

Smooth smooth

Smooth smooth

Smooth smooth

Smooth smooth

Whether contain hazardous solvents such as benzene

Do not have

Contain

Do not contain

Do not contain

Do not contain

Do not contain

Do not contain

Sticking power

<=0～2 grades

0 grade

0 grade

0 grade

0 grade

0 grade

0 grade

Pencil hardness

≥B

HB

HB

HB

HB

HB

HB

Chemical-resistant

2h passes through

Excellent

Excellent

Excellent

Excellent

Excellent

Excellent

Surface drying min

≤30

10～20

10～20

10～20

10～20

10～20

10～20

Tack-free h

≤8

2～4

2～4

2～4

2～4

2～4

2～4

VOC,g/L

≤580

Less than 580

Less than 200

Less than 200

Less than 200

Less than 200

Less than 200

Leveling characteristics

Good

Generally

Good

Generally

Can accept

Can accept

Good

Application property

Be prone to

Be prone to

Be prone to

Be prone to

Be prone to

Be prone to

Be prone to

Can be drawn by above data, coating of the present invention does not only contain organic solvents such as benzene, and its hardness is higher, glossiness good, wear resisting property is high, has excellent physical and mechanical properties and chemical resistance preferably.The content of volatile organic compounds of the present invention (VOC) is significantly less than conventional solvent type coating.And coating of the present invention and other water-based are not lumpd when being compatible, not gelling, have good consistency.

Stain resistance of the present invention is to utilize resin in film process, forms small overhang on the surface, makes the trickle roughening of paint film, reduces the contact area of outside contamination material with paint film, thereby improves its stain resistance.

According to above design, just can realize the present invention preferably.

Claims (5)

1. the full light white finish paint of aqueous one-component is characterized in that: be made up of following compositions in weight percentage:

Aqueous pu dispersions 40%～60%

Polyacrylic acid modified urethane 20%～40%

Wetting agent 0.1%～0.5%

Thickening material 1.0%～2.0%

Skimmer 0.1%～0.5%

White titanium pigment 9.0%～20.0%

Mould inhibitor 0.1%～0.5%

Sanitas 0.1%～0.5%

Rheological agent 0.1%～0.5%

Film coalescence aid 0.1%～2.0%

Water 1.0%～5.0%.

2. the full light white finish paint of aqueous one-component according to claim 1 is characterized in that: the weight percent of described aqueous pu dispersions is 40%～50%.

3. the full light white finish paint of aqueous one-component according to claim 1 is characterized in that: the weight percent of described polyacrylic acid modified urethane is 20%～30%.

4. the full light white finish paint of aqueous one-component according to claim 1 is characterized in that: the weight percent of described white titanium pigment is 9.0%～15.0%.

5. the preparation method of the full light white finish paint of aqueous one-component, it is characterized in that: the preparation process of this product is following:

(1) under the stirring velocity of stirred vessel 600～800r/min; Adding weight percent successively is 40%～60% aqueous pu dispersions, 20%～40% polyacrylic acid modified urethane, 0.1%～0.5% wetting agent, 1.0%～2.0% thickening material, 0.1%～0.5% skimmer, stirs;

(2) under the stirring velocity of 600～800r/min, slowly add weight percent and be 9.0%～20.0% white titanium pigment;

(3) rotating speed to the 1200～1500r/min of adjusting stirred vessel is stirred to fineness smaller or equal to 10um;

(4) regulate the stirred vessel rotating speed; Under the agitation condition of stirred vessel 600～800r/min; Adding weight percent successively is 0.1%～0.5% mould inhibitor, 0.1%～0.5% sanitas, 0.1%～0.5% rheological agent, 0.1%～2.0% film coalescence aid, stirs;

(5) the use weight percent is this stirred vessel of water cleaning of 1.0%～5.0%, this viscosity is adjusted to 120KU～130KU get final product.