CN109988458A - A kind of preparation and application can be used for the aqueous high molecular coating that white board marker is write and cleaned - Google Patents

A kind of preparation and application can be used for the aqueous high molecular coating that white board marker is write and cleaned Download PDF

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Publication number
CN109988458A
CN109988458A CN201810002124.1A CN201810002124A CN109988458A CN 109988458 A CN109988458 A CN 109988458A CN 201810002124 A CN201810002124 A CN 201810002124A CN 109988458 A CN109988458 A CN 109988458A
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component
weight
parts
high molecular
agent
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CN201810002124.1A
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Inventor
黄燕
殷亚鹏
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Nippon Paint China Co Ltd
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Nippon Paint China Co Ltd
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Priority to CN201810002124.1A priority Critical patent/CN109988458A/en
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09DCOATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00Inks
    • C09D11/16Writing inks

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Paints Or Removers (AREA)

Abstract

The present invention provides a kind of preparation methods that can be used for the double-component aqueous polymeric coating layer that white board marker is write and cleaned, component A aqueous high molecular composition includes the component of following parts by weight in the double-component aqueous high molecular material compositions: 40~70 parts by weight of polymer emulsion with particular functional group, wetting dispersing agent 0.3-2 parts by weight, PH regulator 0.1-0.8 parts by weight, other 2.0~6.0 parts by weight of auxiliary agent and water 15-50 parts by weight;B component is the curing agent containing particular functional group in the double-component aqueous high molecular material compositions.Component A VOC content is 0 in double-component aqueous high molecular material compositions of the present invention, and B component VOC content is extremely low, and it is the anti-graffiti product of rare green safe environmental protection in the market that the film formed after reaction, which has, which easily writes easily erasing property to free ink pen,.

Description

It is a kind of can be used for white board marker write and clean aqueous high molecular coating preparation with Using
Technical field
The present invention relates to a kind of preparation and application that can be used for the aqueous high molecular coating that white board marker is write and cleaned.
Background technique
With the improvement of people ' s living standards and comprehensive relieving of two tire policies, more and more family's selections are met new Life, the finishing of child room brought into schedule.Child be on the one hand it is delicate, they carry out 90% time indoors, The physical and mental health of the quality of indoor environment directly child.After indoor decoration, remaining formaldehyde in air, (volatility is organic by VOC Object) etc. harmful substances seriously threaten the health of child.The fighting capacity of another aspect child be also it is infinite, they like in wall It scrawls on face, existing decorative paint can not resist these spots at all, and present parent is not saying not simply, But give them more imagination spaces, metope in vain is just at victim, though drawing board can solve this problem, drawing board On the one hand space of bedroom is accounted for, another aspect drawing board has the security risks such as collapse and therefore invents a green safe anti-painting Crow product is necessary.
Our aqueous high molecular coating just meets two kinds of demands of the above parent, it is a kind of transparent macromolecule Film is coated on metope and does not change the original color of metope, while it can also provide a kind of free ink pen can easily write the effect easily wiped Fruit, furthermore it is free of formaldehyde, extremely low VOC, and real green safe product meets the scribble demand of child.It is a new The functional polymer coating of type enriches our existing painting designs.
Furthermore this anti-graffiti product also can be applicable to the field that meeting room, classroom, kitchen etc. need to write and wipe at any time It closes.
Summary of the invention
The purpose of the present invention is to provide a kind of novel aqueous high molecular coatings for can be used for white board marker and writing and cleaning, originally The another object of invention is to provide the preparation method of the polymeric coating layer.
The first aspect of the present invention, provides a kind of aqueous high molecular composition, the aqueous high molecular composition include with The component of lower parts by weight: 40~70 parts by weight of polymer emulsion, wetting dispersing agent 0.3-2 parts by weight, PH regulator 0.1-0.8 Parts by weight, other 2.0~6.0 parts by weight of auxiliary agent and water 15-50 parts by weight.
In another preferred example, 45~65 parts by weight of polymer emulsion, preferably 50-60 parts by weight.
In another preferred example, wetting dispersing agent 0.5-1.5 parts by weight.
In another preferred example, PH regulator 0.3-0.6 parts by weight.
In another preferred example, other auxiliary agents 2.5-5 parts by weight, preferably 2.5-4 parts by weight.
In another preferred example, other described auxiliary agents contain the following parts by weight: 1~5 parts by weight of thickener, defoaming 0.2~1.2 parts by weight of agent, 0.2~0.6 parts by weight of biocide mildewcide, 0.2~0.5 parts by weight of preservative.
Preferably, other auxiliary agents of the present invention contain the following parts by weight: 1~4 part of thickener, defoaming agent 0.2 ~0.8 parts by weight, 0.3~0.6 parts by weight of biocide mildewcide, 0.2~0.5 parts by weight of preservative.
In another preferred example, thickener is 1-3 parts by weight.
In another preferred example, defoaming agent is 0.3-0.7 parts by weight.
In another preferred example, 0.3~0.5 parts by weight of biocide mildewcide.
In another preferred example, 0.2~0.4 parts by weight of preservative.
In another preferred example, the thickener, defoaming agent, biocide mildewcide, preservative mass ratio be 2.5 ± 0.1: ± 0.1:0.3 ± 0.05 0.6 ± 0.1:0.6.
In another preferred example, the defoaming agent is organic silicon defoaming agent or mineral oil defoaming agent, the thickener For at least one of cellulose thickener, polyurethanes rheology control agent, alkali-swelling type thickener, inorganic bentonite.
In a specific embodiment, it chooses polyurethanes rheology control agent to combine with alkali-swelling type thickener, energy Effectively improve the flow leveling of film.
In another preferred example, the polymer emulsion is the acrylic emulsion containing hydroxyl.
Preferably, the acrylic emulsion hydroxy radical content containing hydroxyl is 2%~5% (being based on solid content), lotion Partial size is 150-250nm, and glass transition temperature Tg is 6~12 DEG C, and minimum film formation temperature MFFT is 4~9 DEG C.
In a specific embodiment, the lotion is hydroxyl modification AA emulsion, and particle diameter distribution is 170~200nm, solid compositions are between 45~50%, residual Yu Danti≤100ppm, TVOCs≤100ppm, glass transition temperature Tg is between 6~12 DEG C, and minimum film formation temperature MFFT is between 4~9 DEG C.
In another preferred example, pH adjusting agent is organic alcohol amine pH adjusting agent or organic Ammonia pH adjusting agent.
In another preferred example, the wetting dispersing agent is polyphosphoric acid salt, polycarboxylic acid salt and polyoxyethylene allylic alkylation At least one of ethers.
What it is different from conventional coating is addition of the double-component aqueous high molecular material compositions without pigments and fillers of the present invention.
Addition of the aqueous high molecular material compositions without pigments and fillers of the present invention, being formed by coating is to have certain light The macromolecule membrane of the transparent high-dirt-resistance in pool.
Heretofore described mould inhibitor and preservative are not specifically limited, as long as not generating limit to goal of the invention of the invention System;In a specific embodiment, the dosage of mould inhibitor be 0~1 parts by weight, preferably 0.1~1 parts by weight, more preferably 0.2 ± 0.1 part;In a specific embodiment, the dosage of preservative be 0~1 parts by weight, preferably 0.1~1 parts by weight, more It is preferred that 0.3 ± 0.05 part.
Heretofore described water is primarily used to as decentralized medium, and dosage is not specifically limited, enough formulas System is uniformly dispersed, and meets design viscosity, preferably 15-50 parts by weight.
The second aspect of the present invention provides a kind of double-component aqueous polymeric composition, the double-component aqueous macromolecule Composition includes:
Component A is aqueous high molecular composition described in first aspect;
B component is curing agent.
In another preferred example, the weight ratio of component A and B component is 2-6:1, preferably 4:1.
In another preferred example, the curing agent is the curing agent containing NCO group.
Preferably, curing agent used in the present invention is isocyanate curing agent, and particular functional group is NCO group, NCO group mass fraction is 18~25 parts, and solid content is 85%~100%.
In a specific embodiment, the curing agent of selection is that type isocyanate curing agent, solid content can be dispersed in water It is 100%, does not artificially add solvent, therefore greatly reduce VOC content, and its particular hydrophilic in component A is dispersed It can be quickly dissolved in component A under the action of agent and associate with lotion and generate polymeric coating layer, which is highly resistant to free ink pen Infiltration, accomplish easily to write the effect easily wiped.
In another preferred example, component A and B component are separately packed, and are uniformly mixed using preceding.
In a specific embodiment, the wetting dispersing agent of selection is polycarboxylic acid anion surfactant, the present invention The polycarboxylic acid anion surfactant, is hydrophilic surfactant active, can be mixed in A, B component after being added to component A Good peptizaiton is played when conjunction, prevents curing agent from reuniting, and accelerates reaction rate.
The third aspect of the present invention, provides a kind of aqueous high molecular coating, and the coating includes double described in second aspect Component aqueous polymeric composition, double-component aqueous polymeric composition is after mixing, coating, solidification as described in second aspect It is formed.
The fourth aspect of the present invention provides a kind of preparation side of aqueous high molecular material compositions as described in its one side Method, which comprises the following steps:
(1) water is put into dispersion tank, revolving speed is controlled at 300~500 revs/min;
(2) then successively alkali-swelling type thickener, PH regulator, wetting dispersing agent, polyurethane thickener are added to point It dissipates in tank, every kind of auxiliary agent stirs 3 ± 1 minutes;
(3) will defoaming agent be added dispersion tank in, improve revolving speed to 800~1200 revs/min, high speed dispersion 10 ± 3 minutes, It is allowed to be uniformly dispersed;
(4) it is subsequently added into fungicide, is stirred 3 ± 1 minutes;
(5) it is slowly added to acrylic emulsion, is stirred 5 ± 2 minutes;
(6) it is subsequently added into preservative and mould inhibitor, is stirred 3 ± 1 minutes;
(7) defoaming agent is added, is stirred 3 ± 1 minutes;
(8) it is eventually adding water and adjusts viscosity, obtain the component A of the high molecular material.
It further, is 2-6:1 by mass ratio, the preferably component A of 4:1 and B component be sufficiently mixed 5 minutes, according to applying Work feel, which takes the circumstances into consideration to add, is diluted with water to obtain final polymer, it is noted that component A and B component are to separate packaging, are used It is preceding be uniformly mixed, after mixing within 4 hours use in case partially cured influences use.
Innovation of the invention is: the present invention provides a kind of novel aqueous two-component polymer, the polymer is not artificial Formaldehyde is added, and the hydrophilic surfactant in component A can make B component quick in the case where artificially not adding cosolvent It is reacted with lotion, greatly reduces the content of VOC, be truly realized green safe environmental protection, meet parent to child's health Demand, secondly the polymer formed the colorless and transparent original color of metope that do not change of polymeric membrane do not change original finishing wind It lattice and can accomplish easily to write free ink pen the effect easily wiped, greatly meet demand of the child to scribble, protect simultaneously Metope it is clean and tidy, if certainly cooperation ippon children paint use, can more accomplish comprehensively it is green safe environmental protection and promotion it is anti-graffiti Effect.
Detailed description of the invention
Fig. 1 is reaction schematic diagram.
Specific embodiment
Present inventor develops a kind of aqueous high molecular composition, with solidification by depth studying extensively The aqueous high molecular coating formed after agent is mixing cured is a kind of transparent polymeric membrane, is coated on metope and does not change metope Original color, while it can also provide a kind of free ink pen and easily write the effect easily wiped, furthermore it is free of formaldehyde, extremely low VOC, very Positive green safe product meets the scribble demand of child.It is a novel functional polymer coating, is enriched at present Existing painting design.Furthermore this anti-graffiti product also can be applicable to meeting room, classroom, kitchen etc. and need to write and wipe at any time The occasion removed.On this basis, the present invention is completed.
The measure that project key technology solves
1. the characteristics of blank paint, positions
With reference to the rule of Shanghai City company standard Q31/0115000140C045-2017 " ippon can write aqueous inner wall paint " It is fixed, water-based inner wall product is write the standard specifies the inner wall surface for being suitable for child room or other occasions.Specific requirement It is shown in Table 1 (properties of product requirement) and table 2 (limits of harmful substances)
Table 1
Table 2
The positioning of the double-component aqueous polymeric composition of the application is to meet Q31/0115000140C045-2017 " ippon Aqueous inner wall paint can be write " requirement, harmful substance contents meet the requirement of children's paint, VOC (volatile organic matter) zero Addition;It can also accomplish easily to wipe effect at anti-graffiti aspect.
2. the research and test of anti-graffiti function
In the design of the application " blank paint " formula, NCO group in hydroxy functional group in lotion and curing agent is mainly utilized Associated reaction form the fine and close colorless and transparent film of macromolecule polyurethane and reach anti-graffiti effect, component A in the process It is middle that suitable wetting dispersing agent is added to disperse the curing agent of B component, accelerate reaction rate and suitable leveling auxiliary agent is added To improve film state.
As shown in Figure 1, component A is reacted with B component, molecular weight increases severely after reaction, and system viscosity rises rapidly, therefore to close Reason control component A viscosity avoids viscosity after mixing excessively high and influence reaction rate, and furthermore two kinds of functional group reactions ratios are 1:1, To avoid the generation of the introduced excessive hydroxyl of other auxiliary agents and unnecessary side reaction in component A, recommendation-OH:-NCO= 1:1.1~1.5.
3. the optimization and test of anti-graffiti property
According in the requirement of Q31/0115000140C045-2017 " ippon can write aqueous inner wall paint ", grade capable of washing Not≤2;The lotion and curing agent, selection that the application blank paint is had excellent performance by selection are suitble to the auxiliary agent of integral system, make to apply Film is smooth hard, greatly reduces pollution of the free ink pen spot to film.Functional group in the content of functional group and curing agent in lotion Content and the two ratio, wetting dispersing agent and the selection of defoaming agent etc. are the anti-graffiti property for influencing entire film in formula The key of energy.
The generation of curing agent agglomeration after avoiding two components to mix using suitable dispersing agent is added in component A, Efficient leveling auxiliary agent and defoaming agent are chosen to improve the state of film;So as to form fine and close anti-graffiti film.
5 are drawn on test plate (panel) according to the regulation of Q31/0115000140C045-2017 " ippon can write aqueous inner wall paint " A coherent diameter is the circle of 20nm~30nm, maintains 24 hours, is tested according to the regulation of JG/T304-2011 appendix A And evaluate, the application blank paint has been more than the requirement of " ippon can write aqueous inner wall paint ".
4. the control of VOC (volatile organic matter) and the influence to coating
Volatile organic matter in traditional coating is mainly freeze-thaw auxiliary agent and coalescing agent, and the VOC content of coating requires≤ 20g/L, and two-component high molecular material is response type, does not need artificially to add coalescing agent, but to guarantee two components Sufficiently reaction, can generally add solvent, this introduces VOC with regard to artificial in curing agent.
To reduce VOC content, firstly, being abandoned using the excellent lotion of freeze-thaw resistance to traditional in the selection of lotion Secondly freeze proof solvent selects the water of 100% solid content that type curing agent can be dispersed, refuses people such as propylene glycol, the dependence of ethylene glycol For add solvent, and by added in component A suitable dispersing agent enable two components mix when fast reaction, in addition, component A Middle be added improves the high leveling auxiliary agent cut to reach excellent film performance, is considerably reduced the content of VOC in this way.
The application blank paint VOC content is extremely low, while not influencing the storge quality in the film performance and tank of product.It is maximum Reach the balance of health environment-friendly and performance in degree.
Present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate the present invention Rather than it limits the scope of the invention.In the following examples, the experimental methods for specific conditions are not specified, usually marks according to country Quasi- measurement.If being built without corresponding national standard according to general international standard, normal condition or according to manufacturer The condition of view carries out.Unless otherwise stated, otherwise all number is parts by weight, and all percentage is weight percentage, institute The polymer molecular weight stated is number-average molecular weight.
Unless otherwise defined or described herein, all professional and scientific terms used herein and the skilled people of art technology Meaning known to member is identical.Furthermore any method similar to or equal to what is recorded and material all can be applied to the present invention In method.
Embodiment 1
Aqueous high molecular material compositions described in the present embodiment include the component of following parts by weight:
The preparation method of aqueous high molecular material compositions described in the present embodiment, comprising the following steps:
(1) water is put into dispersion tank, revolving speed is controlled at 300~500 revs/min;
(2) then successively alkali-swelling type thickener, PH regulator, wetting dispersing agent, polyurethane-type thickener are added to In dispersion tank, every kind of auxiliary agent is stirred 3 ± 1 minutes;
(3) defoaming agent is added in dispersion tank, improves revolving speed to 600~1000 revs/min, high speed dispersion 10 ± 3 minutes;
(4) fungicide is added, stirs 3 ± 1 minutes;
(5) it is slowly added to film forming matter, is stirred 5 ± 2 minutes;
(6) it is subsequently added into preservative and mould inhibitor, is stirred 3 ± 1 minutes;
(7) defoaming agent is added, is stirred 3 ± 1 minutes;
(8) it is eventually adding water and adjusts viscosity, obtain the component A of the polymeric coating layer
(9) component A and B component are uniformly mixed using preceding, are stirred 5 ± 1 minutes
(10) it is diluted with water suitable viscosity, completes construction in 4h
The performance test results: meeting the requirement in table 1 to properties of product, also complies in table 2 and limits poisonous and harmful substance It is required that.
Embodiment 2
Aqueous high molecular material compositions described in the present embodiment include the component of following parts by weight:
The preparation method of aqueous high molecular material compositions is the same as example 1 described in the present embodiment.
The performance test results: meeting the requirement in table 1 to properties of product, also complies in table 2 and limits poisonous and harmful substance It is required that.
Embodiment 3
Aqueous high molecular material compositions described in the present embodiment include the component of following parts by weight:
The preparation method of aqueous high molecular material compositions is the same as example 1. described in the present embodiment
The performance test results: compared with Examples 1 and 2, the coating of example 3 is difficult to easily erasing property.
All references mentioned in the present invention is incorporated herein by reference, independent just as each document It is incorporated as with reference to such.In addition, it should also be understood that, after reading the above teachings of the present invention, those skilled in the art can To make various changes or modifications to the present invention, such equivalent forms equally fall within model defined by the application the appended claims It encloses.

Claims (10)

1. a kind of aqueous high molecular composition, which is characterized in that the aqueous high molecular composition includes following parts by weight Component: 40~70 parts by weight of polymer emulsion, wetting dispersing agent 0.3-2 parts by weight, PH regulator 0.1-0.8 parts by weight, other 2.0~6.0 parts by weight of auxiliary agent and water 15-50 parts by weight.
2. aqueous high molecular material compositions as described in claim 1, which is characterized in that other described auxiliary agents include following heavy The component of part: 1~5 parts by weight of thickener, 0.2~1.2 parts by weight of defoaming agent are measured, 0.2~0.6 parts by weight of biocide mildewcide are prevented Rotten 0.2~0.5 parts by weight of agent.
3. aqueous high molecular material compositions as claimed in claim 2, which is characterized in that the defoaming agent disappears for organic silicon Infusion or mineral oil defoaming agent, the thickener are cellulose thickener, polyurethanes rheology control agent, the increasing of alkali swelling type Thick dose, at least one of inorganic bentonite.
4. aqueous high molecular composition as described in claim 1, which is characterized in that the polymer emulsion is to contain hydroxyl Acrylic emulsion.
5. aqueous high molecular composition as described in claim 1, which is characterized in that pH adjusting agent is organic alcohol amine pH adjusting agent Or organic Ammonia pH adjusting agent.
6. aqueous high molecular composition as described in claim 1, which is characterized in that the wetting dispersing agent is Quadrafos Class, at least one of polycarboxylic acid salt and polyethylene oxide alkyl ethers class.
7. a kind of double-component aqueous polymeric composition, which is characterized in that the double-component aqueous polymeric composition includes:
Component A is aqueous high molecular composition described in claim 1;
B component is curing agent.
8. double-component aqueous polymeric composition as claimed in claim 7, which is characterized in that the curing agent is containing NCO The curing agent of group.
9. double-component aqueous polymeric composition as claimed in claim 7, which is characterized in that component A and B component are separately wrapped Dress is uniformly mixed using preceding.
10. a kind of aqueous high molecular coating, which is characterized in that the coating includes double-component aqueous height as claimed in claim 7 Molecular composition is formed after mixing, coating, solidification by double-component aqueous polymeric composition as claimed in claim 7.
CN201810002124.1A 2018-01-02 2018-01-02 A kind of preparation and application can be used for the aqueous high molecular coating that white board marker is write and cleaned Pending CN109988458A (en)

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CN112876985A (en) * 2021-02-07 2021-06-01 上海胡涂涂新材料科技有限公司 Preparation method of solvent-free moisture-cured organic silicon polymer writable coating

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