CN102363707A - Aqueous monocomponent matting white finish and preparation method thereof - Google Patents

Abstract

The invention relates to a finish, and concretely relates to an aqueous monocomponent matting white finish. The aqueous monocomponent matting white finish is prepared through carrying out a self-chemical crosslinking reaction on 40-50% of an aqueous polyurethane dispersion and 20-30% of polyacrylic acid modified polyurethane, and mixing with a wetting agent, a thickening agent, an antifoaming agent, titanium dioxide, a matting agent, a mildew inhibitor, an antiseptic, a rheological agent, a film forming assistant and water. The aqueous monocomponent matting white finish, which has performances of solvent-based white finishes, has the characteristics of environmental protection, low carbon, good matting property, and solution of a problem that routine aqueous paints have a bad compatibility with other aqueous systems.

Description

Aqueous one-component extinction type white finish paint and preparation method thereof

Technical field

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

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 and a kind ofly not only have the advantage of solvent-borne type encapsulant and have environmental protection, low-carbon (LC) performance can also solve the aqueous one-component extinction type white finish paint of conventional water-miscible paint and other water-based system consistency problem of poor.

Realize that technical scheme of the present invention is following:

Aqueous one-component extinction type white finish paint, form by following compositions in weight percentage:

Aqueous pu dispersions 40%～50%

Polyacrylic acid modified urethane 20%～30%

Wetting agent 0.1%～0.5%

Thickening material 1.0%～2.0%

Skimmer 0.1%～0.5%

White titanium pigment 9.0%～15.0%

Matting agent 2.0%～8.0%

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; Described wetting agent is the BYK 156 type wetting agents of the high Tego 752w type wetting agent of ADS 6109 type wetting agents, the enlightening of Hai Chuan, German Bi Ke or the EFKA 4759 type wetting agents of EFKA, and described skimmer is the BYK 028 type skimmer of peaceful FOAMSTAR A10 type skimmer of the high Tego of enlightening 801 type skimmers, section or German Bi Ke.

A kind of preparation method of aqueous one-component extinction type white finish paint, its preparation process is following:

(1) under the whipped state of stirred vessel 600～800r/min; Adding weight percent successively is 40%～50% aqueous pu dispersions, 20%～30% polyacrylic acid modified urethane, 0.1%～0.5% wetting agent, 1.0%～2.0% thickening material, 0.1%～0.5% skimmer, stirs;

(2) continue under the agitation condition of 600～800r/min; Slowly add weight percent and be 9.0%～15.0% white titanium pigment and 2.0～8.0% matting agent; Regulate the rotating speed of stirred vessel, under the speed of 1200～1500r/min, be stirred to fineness smaller or equal to 25um;

(3) regulate rotating speed to the 600～800r/min of stirred vessel, and to add weight percent successively be 0.1%～0.5% mould inhibitor, 0.1%～0.5% sanitas, 0.1～0.5% rheological agent, 0.1%～2.0% film coalescence aid, stir;

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

The present invention has the following advantages and beneficial effect:

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

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

3, the present invention has excellent extinction, stain resistance, chemical moral character and mechanical property, the present invention 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 done further explanation, but embodiment of the present invention is not limited to this.

Embodiment 1

Aqueous one-component extinction type white finish paint is that the BYK 346 type rheological agents of TS-100 type matting agent, 0.5% PCTS BIOX CM type mould inhibitor, 0.5% PCTS BIOX VFB1 type sanitas, 0.5% the German Bi Ke of R706 type white titanium pigment, 6% the Degussa of the high Tego 801 type skimmers of the ADS 6109 type wetting agents of the polyacrylic acid modified urethane of U9800 type, 0.5% the Hai Chuan of AC 2782 type aqueous pu dispersions, 30% the Bayer of 43% peace cutting edge of a knife or a sword, AQUAFLOW NHS 300 type thickening materials that dragon is striden in 1.5% U.S. Asia, 0.5% enlightening, 10% Du Pont, the TM-3 type film coalescence aid of 2.0% sunrise chemical industry, 5.0% water are formed by weight percent mainly.

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

(1) under the whipped state of stirred vessel 700r/min, adding weight percent successively is 43% aqueous pu dispersions, 30% polyacrylic acid modified urethane, 0.5% wetting agent, 1.5% thickening material, 0.5% skimmer, stirs;

(2) continue under the agitation condition of 700r/min, slowly add weight percent and be 10% white titanium pigment and 6% matting agent, regulate the rotating speed of stirred vessel, under the speed of 1400r/min, be stirred to fineness smaller or equal to 25um;

(3) rotating speed of regulating stirred vessel is to 700r/min, and to add weight percent successively be 0.5% mould inhibitor, 0.5% sanitas, 0.5% rheological agent, 2.0% film coalescence aid, stirs;

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

During use, add this watersoluble closed priming paint and water, it is mixed, leave standstill and after bubble is eliminated, can construct in 10 minutes by weight the ratio that is 1 ︰ 0.4.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 752w type wetting agent of enlightening, and what skimmer adopted is the peaceful FOAMSTAR A10 type skimmer of section, and the weight percent of each component of present embodiment is different.

The aqueous one-component extinction type white finish paint of present embodiment mainly is the AC 2782 type aqueous pu dispersions of 46% peace cutting edge of a knife or a sword by weight percent; The polyacrylic acid modified urethane of U9800 type of 28% Bayer; The Tego 752w type wetting agent that 0.4% enlightening is high; The AQUAFLOW NHS 300 type thickening materials of dragon are striden in 1.8% U.S. Asia; The FOAMSTAR A10 type skimmer that 0.4% section is peaceful; The R706 type white titanium pigment of 13% Du Pont; The TS-100 type matting agent of 4% Degussa; 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 1.4% sunrise chemical industry; 4.0% 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 wetting agent of BYK 156, and the weight percent of each component of present embodiment is different.

The aqueous one-component extinction type white finish paint of present embodiment mainly 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 22% Bayer; The wetting agent of 0.3% BYK 156; The AQUAFLOW NHS 300 type thickening materials of dragon are striden in 1.3% U.S. Asia; The Tego 801 type skimmers that 0.3% enlightening is high; The R706 type white titanium pigment of 15% Du Pont; The TS-100 type matting agent of 8% Degussa; 0.4% PCTS BIOX CM type mould inhibitor; 0.4% PCTS BIOX VFB1 type sanitas; The BYK 346 type rheological agents of 0.3% German Bi Ke; The TM-3 type film coalescence aid of 1.0% sunrise chemical industry; 3.0% 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 752w 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 aqueous one-component extinction type white finish paint of present embodiment mainly is the AC 2782 type aqueous pu dispersions of 50% peace cutting edge of a knife or a sword by weight percent; The polyacrylic acid modified urethane of U9800 type of 25% Bayer; The Tego 752w type wetting agent that 0.4% enlightening is high; The AQUAFLOW NHS 300 type thickening materials of dragon are striden in 1.3% U.S. Asia; The BYK 028 type skimmer of 0.2% German Bi Ke; The R706 type white titanium pigment of 12% Du Pont; The TS-100 type matting agent of 5% Degussa; 0.1% PCTS BIOX CM type mould inhibitor; 0.1% 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 0.5% 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 EFKA 4759 type wetting agents of EFKA, as shown in table 1 by the various test parameters of the prepared product of above raw material.

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 752w type wetting agent that enlightening is high

The BYK 156 type wetting agents of Germany Bi Ke

The Tego 752w 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 type 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

1 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

Grinability

Good

Good

Good

Good

Good

Good

Good

VOC,g/L

Technical requirements

Less than 580

Less than 200

Less than 200

Less than 200

Less than 200

Less than 200

Application property

Do not have

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 this product has simultaneously that solvent-borne type encapsulant sticking power is excellent, hardness is higher, wear resisting property is better, and the good and chemical resistance of physical and mechanical properties is advantage preferably.Extinction of the present invention is excellent, the content of volatile organic compounds (VOC) is significantly less than conventional solvent type coating.This watersoluble closed dose do not lump when being compatible with other water-based, not gelling, have good consistency.

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

Claims (2)

1. aqueous one-component extinction type white finish paint is characterized in that: be made up of following raw materials by weight percent:

Aqueous pu dispersions 40%～50%

Polyacrylic acid modified urethane 20%～30%

Wetting agent 0.1%～0.5%

Thickening material 1.0%～2.0%

Skimmer 0.1%～0.5%

White titanium pigment 9.0%～15.0%

Matting agent 2.0%～8.0%

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 preparation method of an aqueous one-component extinction type white finish paint, it is characterized in that: the step for preparing this product is following:

(1) under the whipped state of stirred vessel 600～800r/min; Adding weight percent successively is 40%～50% aqueous pu dispersions, 20%～30% polyacrylic acid modified urethane, 0.1%～0.5% wetting agent, 1.0%～2.0% thickening material, 0.1%～0.5% skimmer, stirs;

(2) continue under the agitation condition of 600～800r/min; Slowly add weight percent and be 9.0%～15.0% white titanium pigment and 2.0～8.0% matting agent; Regulate the rotating speed of stirred vessel, under the speed of 1200～1500r/min, be stirred to fineness smaller or equal to 25um;

(3) regulate rotating speed to the 600～800r/min of stirred vessel, and to add weight percent successively be 0.1%～0.5% mould inhibitor, 0.1%～0.5% sanitas, 0.1～0.5% rheological agent, 0.1%～2.0% film coalescence aid, stir;

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