CN103589326A

CN103589326A - Anti-pollution PU paint

Info

Publication number: CN103589326A
Application number: CN201310581663.2A
Authority: CN
Inventors: 赵智华
Original assignee: GUANGDONG QIANYESONG CHEMICAL CO Ltd
Current assignee: GUANGDONG QIANYESONG CHEMICAL CO Ltd
Priority date: 2013-11-20
Filing date: 2013-11-20
Publication date: 2014-02-19

Abstract

The invention belongs to the field of paints, and particularly relates to a PU paint. An anti-pollution PU furniture paint consists of a main agent, a curing agent, and a diluent, wherein the main agent comprises the following components in part by weight: high-hydroxyl alkyd resin 45 to 55 parts, low-hydroxyl alkyd resin 20 to 30 parts, chloride-vinyl acetate terpolymer resin 1 to 5 parts, solvent 12 to 20 parts, wax powder 0.2 to 0.5 parts, and adjuvant 1.4 to 3 parts. The PU paint provided by the invention has large paint film thickness and good anti-pollution performance by adopting chloride-vinyl acetate terpolymer resin in combination with high-hydroxyl alkyd resin and low-hydroxyl alkyd resin. Meanwhile, the curing agent adopted in the invention is a TDI (toluene diisocynate) adduct, which can improve the crosslinking density, hardness and chemical resistance of the paint film. The addition of HDI (hexamethylene diisocyanate) terpolymer can further improve the crosslinking density and later hardness of the paint film. With combination of the above components, the PU paint provided by the invention has excellent anti-pollution effect.

Description

A kind of antipollution PU paint

Technical field

The invention belongs to paint field, particularly a kind of PU paint.

Background technology

PU paint is the general designation of all polyurethane coatings, and its thin film-forming method is nature film forming, need not special process.Polyurethane paint is two-component chemical structure, consists of host+solidifying agent+thinner.

Traditional PU paint antifouling property is poor, exists spot to adhere to rear paint film and is easily colored, and impression of the hand such as is difficult for wiping at the defect by getting on.

Summary of the invention

In view of this, the technical problem to be solved in the present invention is to provide a kind of PU paint of antipollution effect, by improving the hardness of paint film, smooth, density reaches antipollution effect.

The technical scheme that the present invention solves the problems of the technologies described above is:

A kind of antipollution PU paint, is comprised of host, solidifying agent, thinner, wherein, and the component that host contains following mass fraction:

High hydroxyl Synolac 45-55 part;

Low hydroxyl Synolac 20-30 part;

Ternary vinyl chloride-vinyl acetate resin 1-5 part;

Solvent 12-20 part;

Wax powder 0.2-0.5 part;

Auxiliary agent 1.4-3 part.

Described high hydroxyl Synolac is that hydroxyl value is the high hydroxyl Synolac of 220-240mgKOH/g; Described low hydroxyl Synolac is that hydroxyl value is the low hydroxyl Synolac of 60-80mgKOH/g.

Described solidifying agent is comprised of the TDI affixture of 75% solid content of 85-95 wt %, the HDI tripolymer of 90% solid content of 5-15wt%.

Described thinner is by the dimethylbenzene of 45-55wt%, the N-BUTYL ACETATE of 35-45wt%, and the 1-Methoxy-2-propyl acetate of 5-15wt% forms.

Described solvent is by the N-BUTYL ACETATE of 50-70wt%, the 1-Methoxy-2-propyl acetate of 5-15wt%, and the vinyl acetic monomer of 10-20wt%, the dimethylbenzene of 20-30wt% forms;

Described auxiliary agent is at least one in dispersion agent, flow agent, defoamer.

Further, described host also contains the matting agent of 3-5 part.

Further, described host also contains the toner of 3-5 part.

Tool of the present invention has the following advantages:

In the present invention, high hydroxyl Synolac has improved the compactness of paint film, and hardness is high; Low hydroxyl Synolac reaction is fast, and solvent release is good, and hardness of paint film promotes very fast; The anti-chemical of ternary vinyl chloride-vinyl acetate resin is good, and solvent release is good, can improve resistance to crocking, and ternary vinyl chloride-vinyl acetate resin and high hydroxyl Synolac and the collocation of low hydroxyl Synolac are used, and have further increased the hardness of paint film.Wax powder can increase hardness of paint film and slipping.Meanwhile, solidifying agent of the present invention is used the TDI affixture of high reaction activity, makes the cross-linking density of paint film high, and hardness is high, and anti-chemical is good; HDI is trimerical adds further cross-linking density and the late hardness that has improved paint film.The collocation of said components, makes this PU paint have good antipollution effect.

Embodiment

For the ease of it will be appreciated by those skilled in the art that the present invention will be further described below in conjunction with embodiment.Embodiment is only the preferred embodiment of the present invention, is not limitation of the present invention.

Embodiment 1

A PU light clear finish, is comprised of host, solidifying agent, thinner.

Wherein, host is comprised of following component according to the mass fraction:

Hydroxyl value is 50 parts of the high hydroxyl Synolac of 220mgKOH/g; Hydroxyl value is 25 parts of the low hydroxyl Synolac of 60mgKOH/g; 3 parts of ternary vinyl chloride-vinyl acetate resins; 15 parts of solvents; 0.4 part, tetrafluoroethylene wax powder; 1.5 parts of dispersant B YK161; 0.3 part of flow agent EFKA3777; 0.4 part of defoamer BYK141.

Solidifying agent is comprised of the HDI tripolymer of the TDI affixture of 90% 75% solid content, 10% 90% solid content by mass percentage.

Thinner is by mass percentage by 50% dimethylbenzene, 40% N-BUTYL ACETATE, and 10% 1-Methoxy-2-propyl acetate forms.

The preparation method of this PU light clear finish is this area routine techniques, at this, is not elaborated.

The technology for detection index of PU light clear finish prepared by the present embodiment is as follows:

Paint film levelling property is fabulous

Hardness of paint film 2H

Snappiness 2mm

Glossiness 98

Resistance to coffee, edible oil, soy sauce etc. pollute/10 minutes without vestige.

Embodiment 2

A PU matte varnish, is comprised of host, solidifying agent, thinner.

Hydroxyl value is 55 parts of the high hydroxyl Synolac of 230mgKOH/g; Hydroxyl value is 20 parts of the low hydroxyl Synolac of 70mgKOH/g; 4 parts of ternary vinyl chloride-vinyl acetate resins; 20 parts of solvents; 0.2 part, tetrafluoroethylene wax powder; 2 parts of dispersant B YK161; 0.5 part of flow agent EFKA3777; 0.2 part of defoamer BYK141; 5 parts of matting agents.

Solidifying agent is comprised of the HDI tripolymer of the TDI affixture of 85% 75% solid content, 15% 90% solid content by mass percentage.

Thinner is by mass percentage by 45% dimethylbenzene, 45% N-BUTYL ACETATE, and 10% 1-Methoxy-2-propyl acetate forms.

The technology for detection index of PU matte varnish prepared by the present embodiment is as follows:

Paint film levelling property is fabulous

Hardness of paint film 2H

Snappiness 2mm

Glossiness 98

Embodiment 3

A PU solid color enamel, is comprised of host, solidifying agent, thinner.

Hydroxyl value is 45 parts of the high hydroxyl Synolac of 240mgKOH/g; Hydroxyl value is 30 parts of the low hydroxyl Synolac of 80mgKOH/g; 1 part of ternary vinyl chloride-vinyl acetate resin; 12 parts of solvents; 0.5 part, tetrafluoroethylene wax powder; 3 parts of toners; 1 part of dispersant B YK161; 0.2 part of flow agent EFKA3777; 0.2 part of defoamer BYK141.

Solidifying agent is comprised of the HDI tripolymer of the TDI affixture of 95% 75% solid content, 5% 90% solid content by mass percentage.

Thinner is by mass percentage by 55% dimethylbenzene, 35% N-BUTYL ACETATE, and 10% 1-Methoxy-2-propyl acetate forms.

The technology for detection index of PU solid color enamel prepared by the present embodiment is as follows:

Paint film levelling property is fabulous

Hardness of paint film 2H

Snappiness 2mm

Glossiness 98

Claims

1. an antipollution PU paint, is comprised of host, solidifying agent, thinner, it is characterized in that the component that host contains following mass fraction:

High hydroxyl Synolac 45-55 part;

Low hydroxyl Synolac 20-30 part;

Ternary vinyl chloride-vinyl acetate resin 1-5 part;

Solvent 12-20 part;

Tetrafluoroethylene wax powder 0.2-0.5 part;

Auxiliary agent 1.4-3 part.

2. antipollution PU paint according to claim 1, is characterized in that: described high hydroxyl Synolac is that hydroxyl value is the high hydroxyl Synolac of 220-240mgKOH/g; Described low hydroxyl Synolac is that hydroxyl value is the low hydroxyl Synolac of 60-80mgKOH/g.

3. antipollution PU paint according to claim 1, is characterized in that: described solidifying agent is comprised of the TDI affixture of 75% solid content of 85-95 wt %, the tripolymer of the 90%HDI solid content of 5-15wt%.

4. antipollution PU according to claim 1 paint, is characterized in that: described thinner is by the dimethylbenzene of 45-55wt%, the N-BUTYL ACETATE of 35-45wt%, and the 1-Methoxy-2-propyl acetate of 5-15wt% forms.

5. antipollution PU according to claim 1 paint, is characterized in that: described solvent is by the N-BUTYL ACETATE of 50-70wt%, the 1-Methoxy-2-propyl acetate of 5-15wt%, and the vinyl acetic monomer of 10-20wt%, the dimethylbenzene of 20-30wt% forms.

6. antipollution PU paint according to claim 1, is characterized in that: described auxiliary agent is at least one in dispersion agent, flow agent, defoamer.

7. antipollution PU paint according to claim 1, is characterized in that: described host also contains the matting agent of 3-5 part.

8. antipollution PU paint according to claim 1, is characterized in that: described host also contains the toner of 3-5 part.