CN111269346A - Vinyl chloride-vinyl acetate copolymer resin with dispersing aid function and coating thereof - Google Patents
Vinyl chloride-vinyl acetate copolymer resin with dispersing aid function and coating thereof Download PDFInfo
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
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Abstract
The invention belongs to the field of high polymer materials. The invention relates to a vinyl chloride-vinyl acetate copolymer with a dispersing aid function and a coating thereof, and a preparation method of the vinyl chloride-vinyl acetate copolymer with the dispersing aid function is characterized in that 1, 2-dibromoethane (A), apigenin (B), amino alcohol derivative (C), paraformaldehyde and salicylic acid (D) are used as raw materials, and a vinyl chloride-vinyl acetate copolymer material with the dispersing aid function is obtained through coupling reaction and Mannich reaction. The material is prepared into a coating, and has more efficient and wider pigment dispersibility and efficient antibacterial property while the original performance of the vinyl chloride-vinyl acetate copolymer is kept, so that the material can be expected to meet wide market prospects, and especially can be applied to the fields of decorative coatings such as woodware and the like, food packaging ink and the like.
Description
Technical Field
The invention relates to a vinyl chloride-vinyl acetate copolymer resin with a dispersing aid function and a coating thereof. The invention belongs to the field of high polymer materials.
Background
In the aspect of paint and ink, the vinyl chloride enables the coating film to have strength and toughness, and water resistance and chemical resistance. The vinyl acetate improves the solubility of the coating and the flexibility of the coating film. The vinyl chloride-vinyl acetate copolymer resin has good acid and alkali resistance, chemical resistance, water resistance, high flexibility and toughness. In order to increase the adhesion to the substrate and the compatibility with other resins, the vinyl chloride resin is also chemically modified, such as carboxyl modification, hydroxyl modification, epoxy modification, and the like. The application of the vinyl chloride-vinyl acetate copolymer as the coating also has defects, and the vinyl chloride-vinyl acetate copolymer plays a role in providing quick drying, adhesive force, corrosion resistance and the like. And the pigment contains vinyl chloride and vinyl acetate structures, so that the pigment is a good carrier for the pigments of printing ink and paint, and has certain pigment dispersibility and color development.
The hydroxyl modified vinyl chloride-vinyl acetate copolymer has reactivity due to the existence of hydroxyl, and can be widely applied to food packaging ink, high-grade wood paint, ship anticorrosive paint and the like. But more or less dispersing aids are needed to be added in the process of using the colored paint to meet the effect; and functional additives such as an antibacterial mildew inhibitor and the like are required to be added in the application fields of food packaging ink, high-grade wood lacquer and the like.
Therefore, in order to solve the above problems, the need for further improving the dispersion effect, the dispersion versatility, and providing the antibacterial property is present in the front of researchers, and the urgency of development work is obvious.
Disclosure of Invention
The invention aims to overcome the defect of poor dispersibility of the existing vinyl chloride-vinyl acetate copolymer, and provides a vinyl chloride-vinyl acetate copolymer with a dispersing auxiliary function and a coating thereof, wherein 1, 2-dibromoethane (A), apigenin (B), an amino alcohol derivative (C), paraformaldehyde and salicylic acid (D) are used as raw materials, and a vinyl chloride-vinyl acetate copolymer material with the dispersing auxiliary function is obtained through coupling reaction and Mannich reaction and is used for preparing the coating.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the vinyl chloride-vinyl acetate copolymer resin with the dispersing auxiliary function has the structural formula as follows:
wherein, -R1-OH is hydroxy or hydroxyalkyl; -R2-is-C4H8-、-C6H12-、-C7H14-or-C8H16-。
A preparation method of a vinyl chloride-vinyl acetate copolymer with a dispersing auxiliary function is characterized by comprising the following steps: comprises the following steps:
step (1): coupling reaction to obtain an intermediate product I;
step (2): coupling reaction to obtain an intermediate product II;
and (3): performing Mannich reaction to obtain an intermediate product III;
and (4): and performing Mannich reaction to obtain the vinyl chloride-vinyl acetate copolymer resin with the function of the dispersing aid, namely the target product V.
Preferably, the step (1) is specifically:
adding vinyl chloride-vinyl acetate copolymer containing 1mol of hydroxyl, 2-5mol of 1, 2-dibromoethane (A) and 2-5mol of alcohol alkali liquor into 50mol of organic solvent a, heating to 100-; slowly adding 90mol of water, stirring for 30min, adding 100mol of organic solvent b, stirring for 30min, standing for layering, taking an organic phase, drying with anhydrous sodium sulfate, filtering, and performing rotary evaporation to obtain an intermediate product I.
Preferably, the step (2) is specifically:
adding 1mol of bromine atom-containing I, 1mol of apigenin (B) and 1mol of potassium carbonate into 80mol of organic solvent a, heating to 100 ℃ and 130 ℃, stirring strongly for 1-3h, cooling, standing, and then carrying out vacuum concentration on the solution, wherein residual components are enriched; slowly adding 90mol of water, stirring for 30min, adding 100mol of organic solvent b, stirring for 30min, standing for layering, taking an organic phase, drying with anhydrous sodium sulfate, filtering, and performing rotary evaporation to obtain an intermediate product II.
Preferably, the step (3) is specifically:
adding 1mol of apigenin (A) -containing II, 1-1.2mol of amino alcohol derivative (C) and 1-1.2mol of paraformaldehyde into 50mol of organic solvent a, heating to 90-110 ℃, stirring for 4-15h, standing, distilling under reduced pressure, dissolving the concentrate into organic solvent b, cooling, adding 1N sodium hydroxide aqueous solution, washing for 3 times with deionized water, standing, layering, separating, drying the organic phase with anhydrous sodium sulfate, filtering, rotary evaporating and drying in vacuum to obtain intermediate product III.
Preferably, the step (4) is specifically:
adding 1mol of secondary amino-containing III, 1-1.2mol of salicylic acid (D) and 1-1.2mol of paraformaldehyde into 50mol of organic solvent a, heating to 90-110 ℃, strongly stirring for 8-20h, standing, distilling under reduced pressure, dissolving the concentrate into organic solvent b, cooling, adding 1N sodium hydroxide aqueous solution, washing for 3 times with deionized water, standing, layering, separating, drying the organic phase with anhydrous sodium sulfate, filtering, rotary steaming, and vacuum drying to obtain a target product IV.
Preferably, the alcohol alkali liquor is potassium alcohol liquor or sodium alcohol liquor.
Preferably, the organic solvent a is N, N-dimethylformamide, cyclohexanone or dimethyl sulfoxide.
Preferably, the organic solvent b is ethyl acetate, butyl acetate or dimethyl sulfoxide.
A vinyl chloride-vinyl acetate resin coating with a dispersing aid function and a preparation method thereof are characterized by comprising the following raw materials in parts by weight: 40-60 parts of UV resin; 20-35 parts of UV monomer diluent; 10-20 parts of pigment; 5-10 parts of vinyl chloride-vinyl acetate copolymer with a dispersing aid function; 0.1-0.5 part of defoaming agent; 0.1-3 parts of a leveling agent; 0.5-3 parts of a photoinitiator;
premixing UV resin, pigment and vinyl chloride-vinyl acetate copolymer resin with the function of dispersing auxiliary agent, dispersing for 30min by using a high-speed dispersion machine, and grinding and dispersing the dispersed paint slurry on a sand mill until the fineness is qualified; and then stirring and adding a defoaming agent, a flatting agent, a photoinitiator and a UV monomer diluent to adjust the viscosity, and finally filtering impurities in the mixture to obtain the vinyl chloride-vinyl acetate copolymer coating with the function of the dispersing aid.
Preferably, the UV resin is one or more of aliphatic polyurethane diacrylate, aliphatic polyurethane triacrylate or aromatic polyurethane triacrylate.
Preferably, the UV monomer diluent is one or more of trimethylolpropane triacrylate, tripropylene glycol diacrylate, 1, 6-hexanediol diacrylate, butyl acrylate or hydroxyethyl acrylate.
Preferably, the pigment is one or more of titanium dioxide, phthalocyanine blue or carbon black.
Preferably, the photoinitiator is 1173, 184, TPO or BP.
The invention provides a vinyl chloride-vinyl acetate copolymer with a dispersing auxiliary function, which comprises the following preparation processes:
the invention has the beneficial effects that:
(1) the invention provides a vinyl chloride-vinyl acetate copolymer with a dispersing aid function, which is prepared by adopting 1, 2-dibromoethane (A), apigenin (B), amino alcohol derivative (C), paraformaldehyde and salicylic acid (D) as raw materials, solves the problem of single functionalization of the conventional vinyl chloride-vinyl acetate copolymer, and has the advantages of wide raw material source, simple reaction steps and easiness in operation.
(2) The invention provides a vinyl chloride-vinyl acetate copolymer resin with a dispersing aid function, which structurally comprises a chlorine substituent, an ester group, a tertiary amino group, a hydroxyl group and a carboxyl group. The chlorine substituent and the ester group have certain dispersibility and color-developing property on the pigment; the existence of tertiary amino, carboxyl and phenolic hydroxyl has excellent dispersing effect on pigments such as organic pigments and carbon black; the tertiary amino group and the hydroxyl group have excellent dispersibility in the inorganic pigment. The existence of the multi-polar group greatly improves the pigment dispersibility and universality of the vinyl chloride-vinyl acetate copolymer, and can be used as a macromolecular dispersant.
(3) The invention provides a vinyl chloride-vinyl acetate copolymer resin with a dispersing aid function and a coating thereof, wherein the structure of the vinyl chloride-vinyl acetate copolymer resin contains an apigenin structure. On one hand, the benzene ring structure in the apigenin has better affinity with the organic pigment, which is beneficial to the dispersion of the organic pigment; on the other hand, apigenin has excellent antibacterial and antiviral effects, is green in source and excellent in biocompatibility, and can be used as a macromolecular antibacterial agent.
(4) The invention provides a vinyl chloride-vinyl acetate copolymer resin with a dispersing aid function and a coating thereof, wherein the structure of the vinyl chloride-vinyl acetate copolymer resin contains a tertiary amine structure. The hydrogen abstraction type photoinitiator can be directly used as an auxiliary initiator in the use process of a hydrogen abstraction type photoinitiator in the application of a photocuring coating, and is economical and efficient.
(5) The invention provides a vinyl chloride-vinyl acetate copolymer resin with a dispersing auxiliary function and a coating thereof, which are prepared by molecular design and chemical modification means, so that the problems that the existing vinyl chloride-vinyl acetate copolymer resin is single in function and narrow in application field, and is endowed with wider pigment dispersibility and more efficient dispersing effect and excellent antibacterial property are solved. It is expected that the material will meet wide market prospect, especially in the fields of decorative coatings such as woodware and the like, food packaging ink and the like.
The specific implementation mode is as follows:
the present invention will be described in detail with reference to examples. It is to be understood, however, that the following examples are illustrative of embodiments of the present invention and are not to be construed as limiting the scope of the invention.
Example 1
The preparation method of the dispersing auxiliary agent functional vinyl chloride-vinyl acetate copolymer comprises the following steps:
step (1) chlorine-vinyl acetate resin (-R) containing 1mol of hydroxyl1OH is hydroxyl), 5mol of 1, 2-dibromoethane (A) and 5mol of potassium alcoholate solution are added into 50mol of mixed solvent of N, N-dimethylformamide and cyclohexanone according to the mass ratio of 1:1, heated to 100 ℃, stirred vigorously for 5 hours, cooled, stood, and then the solution is concentrated in vacuum, and the residual components are enriched; slowly adding 90mol water, stirring for 30min, adding 100mol ethyl acetate, stirring for 30min, standing for layering, drying the organic phase with anhydrous sodium sulfate, filtering, and rotary steaming to obtain intermediate product I (IR: 749 cm)-1: -C-Cl is present; 1715cm-1: -C ═ O is present; 1210cm-1: -C-O-is present; 640cm-1: -C-Br present).
Step (2) adding 1mol of bromine atom-containing I, 1mol of apigenin (B) and 1mol of potassium carbonate into a mixed solvent of 80mol of N, N-dimethylformamide and cyclohexanone according to the mass ratio of 1:1, heating to 100 ℃, strongly stirring for 3h, and coolingAfter standing, concentrating the solution in vacuum, and enriching residual components; slowly adding 90mol water, stirring for 30min, adding 100mol ethyl acetate, stirring for 30min, standing for layering, drying the organic phase with anhydrous sodium sulfate, filtering, and rotary steaming to obtain intermediate product II (IR: 750 cm)-1: -C-Cl is present; 1715cm-1: ester-C ═ O present; 1210cm-1: -C-O-is present; 1638cm-1: -C ═ C-is present; 1581cm-1、1473cm-1、1444cm-1: a benzene ring is present; 3512cm-1: phenol-OH is present; 640cm-1: disappearance of-C-Br).
Step (3) adding 1mol of apigenin (A) -containing II, 1.2mol of amino alcohol derivative (C) and 1.2mol of paraformaldehyde into 50mol of mixed solvent of N, N-dimethylformamide and cyclohexanone according to the mass ratio of 1:1, heating to 90 ℃, stirring for 15h, standing, carrying out reduced pressure distillation, dissolving the concentrate into ethyl acetate, cooling, adding 1N sodium hydroxide aqueous solution, washing for 3 times with deionized water, standing, carrying out layering, separating liquid, taking an organic phase, drying with anhydrous sodium sulfate, filtering, carrying out rotary evaporation and vacuum drying to obtain an intermediate product III (IR: 750 cm)-1: -C-Cl is present; 1715cm-1: ester-C ═ O present; 1210cm-1: -C-O-is present; 1638cm-1: -C ═ C-is present; 1581cm-1、1473cm-1、1444cm-1: a benzene ring is present; 3512cm-1: -OH is present; 3312cm-1: -NH-spike presence).
Step (4) adding 1mol of secondary amino-containing III, 1.2mol of salicylic acid (D) and 1.2mol of paraformaldehyde into 50mol of mixed solvent of N, N-dimethylformamide and cyclohexanone according to the mass ratio of 1:1, heating to 90 ℃, strongly stirring for 20h, standing, carrying out reduced pressure distillation, dissolving the concentrate into ethyl acetate, cooling, adding 1N sodium hydroxide aqueous solution, washing for 3 times with deionized water, standing, layering, separating liquid, taking an organic phase, drying with anhydrous sodium sulfate, filtering, carrying out rotary evaporation and vacuum drying to obtain a target product IV (IR: 750 cm)-1: -C-Cl is present; 1715cm-1: ester-C ═ O present; 1210cm-1: -C-O-is present; 1638cm-1: -C ═ C-is present; 1581cm-1、1473cm-1、1444cm-1: a benzene ring is present; 3501cm-1: -OH is present; 2566cm-1: a small carboxy-OH peak is present; 3312cm-1: disappearance of the NH-spike, i.e. formation of tertiary amine).
The preparation formula and the process of the vinyl chloride-vinyl acetate copolymer coating with the dispersing auxiliary function are as follows:
a vinyl chloride-vinyl acetate resin coating with a dispersing aid function and a preparation method thereof are characterized by comprising the following raw materials in parts by weight: 1/140 parts of aliphatic polyurethane triacrylate and aromatic polyurethane triacrylate in mass ratio; 1/2/235 parts of trimethylolpropane triacrylate, tripropylene glycol diacrylate and butyl acrylate in mass ratio; 10 parts of titanium dioxide and 5 parts of phthalocyanine blue; 8 parts of vinyl chloride-vinyl acetate copolymer IV with a dispersing aid function; 0.2 part of defoaming agent; 2 parts of a leveling agent; 2 parts of a photoinitiator BP;
premixing UV resin, pigment and vinyl chloride-vinyl acetate copolymer resin with the function of dispersing auxiliary agent, dispersing for 30min by using a high-speed dispersion machine, and grinding and dispersing the dispersed paint slurry on a sand mill until the fineness is qualified; and then stirring and adding a defoaming agent, a flatting agent, a photoinitiator and a UV monomer diluent to adjust the viscosity, and finally filtering impurities in the mixture to obtain the vinyl chloride-vinyl acetate copolymer coating with the function of the dispersing aid.
Dispersing aid functional vinyl chloride-vinyl acetate copolymer and coating preparation specific examples 2-5, the other examples are the same as specific example 1 except that:
comparative examples 1-4 are all compared to the coating of specific example 1
Comparative example 1
The coating is characterized by comprising the following raw materials in parts by weight:
1/140 parts of aliphatic polyurethane triacrylate and aromatic polyurethane triacrylate in mass ratio; 1/2/235 parts of trimethylolpropane triacrylate, tripropylene glycol diacrylate and butyl acrylate in mass ratio; 10 parts of titanium dioxide and 5 parts of phthalocyanine blue; 8 parts of conventional hydroxy vinyl chloride-vinyl acetate copolymer; 0.2 part of defoaming agent; 2 parts of a leveling agent; and 2 parts of a photoinitiator BP.
Comparative example 2
The coating is characterized by comprising the following raw materials in parts by weight:
1/140 parts of aliphatic polyurethane triacrylate and aromatic polyurethane triacrylate in mass ratio; 1/2/235 parts of trimethylolpropane triacrylate, tripropylene glycol diacrylate and butyl acrylate in mass ratio; 10 parts of titanium dioxide and 5 parts of phthalocyanine blue; 8 parts of conventional hydroxy vinyl chloride-vinyl acetate copolymer; 3 parts of a dispersing agent; 0.2 part of defoaming agent; 2 parts of a leveling agent; and 2 parts of a photoinitiator BP.
Comparative example 3
The coating is characterized by comprising the following raw materials in parts by weight:
1/140 parts of aliphatic polyurethane triacrylate and aromatic polyurethane triacrylate in mass ratio; 1/2/235 parts of trimethylolpropane triacrylate, tripropylene glycol diacrylate and butyl acrylate in mass ratio; 10 parts of titanium dioxide and 5 parts of phthalocyanine blue; 8 parts of conventional hydroxy vinyl chloride-vinyl acetate copolymer; 3 parts of an antibacterial agent; 0.2 part of defoaming agent; 2 parts of a leveling agent; and 2 parts of a photoinitiator BP.
Comparative example 4
The coating is characterized by comprising the following raw materials in parts by weight:
1/140 parts of aliphatic polyurethane triacrylate and aromatic polyurethane triacrylate in mass ratio; 1/2/235 parts of trimethylolpropane triacrylate, tripropylene glycol diacrylate and butyl acrylate in mass ratio; 10 parts of titanium dioxide and 5 parts of phthalocyanine blue; 8 parts of conventional hydroxy vinyl chloride-vinyl acetate copolymer; 0.2 part of defoaming agent; 2 parts of a leveling agent; 2 parts of photoinitiator BP and 2 parts of EDAB.
The above specific examples 1 to 5 and comparative examples 1 to 4 were applied according to the following process: (1) adjusting spraying construction; (2) standing for 20 minutes after spraying, and controlling the temperature at 30-50 ℃; (3) the curing speed is more than or equal to 4m/min, the medium-pressure mercury lamp is 80w/cm, and the lamp distance is 25 cm.
The physical properties, including gloss, adhesion, impact, pencil hardness, color strength, and antibacterial property, of the orange-peel paints prepared in examples 1 to 5 of the present invention and comparative examples 1 to 4 were measured, respectively, and the results are shown in table 1.
Table 1 physical test properties of the examples
Firstly, as can be seen from table 1, compared with the conventional common vinyl chloride-vinyl acetate copolymer resin, the vinyl chloride-vinyl acetate copolymer resin with the function of the dispersing aid has better dispersion stability and strong construction operability;
secondly, the coating has antibacterial property, and is superior to the common coating added with the antibacterial agent, which shows that the coating has better antibacterial property;
thirdly, the coating of the invention can achieve excellent performance effects without adding an auxiliary initiator in the application of using the hydrogen abstraction type photoinitiator.
In summary, compared with the existing vinyl chloride-vinyl acetate resin coating, the coating provided by the invention has the advantages of obvious dispersion performance, high-efficiency antibacterial property and economy on the premise of maintaining the mechanical property. It is expected that the material will meet wide market prospect, especially in the fields of decorative coatings such as woodware and the like, food packaging ink and the like.
The test method comprises the following steps:
(1) gloss: pencil hardness was measured according to GB/T9754-2007 standard.
(2) Adhesion force: the adhesion of the coating was tested by cross-hatch according to GB/T9286-1998.
(3) Impact: the test was carried out according to the GB/T1732-93 standard.
(4) Pencil hardness: pencil hardness was measured according to GB/T6739-2006 standard.
(5) Dispersibility: the dispersion effect was tested by TEM. Dispersibility expression method: 5 is optimal and 1 is worst.
(6) Freeze-thaw stability: the sample was left at 0 ℃ for 24 hours and then at 60 ℃ for 24 hours, and the particle size d of the sample before and after the standing was measured0And d1Calculating S according to the following formulat：
(7) And (3) antibacterial property: refer to GB4789.2-2010 food safety national standard food microbiology test colony total determination.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. The vinyl chloride-vinyl acetate copolymer with the function of dispersing auxiliary agent is characterized in that the structural formula is as follows:
wherein, -R1-OH is hydroxy or hydroxyalkyl; -R2-is-C4H8-、-C6H12-、-C7H14-or-C8H16-。
2. A preparation method of a vinyl chloride-vinyl acetate copolymer with a dispersing auxiliary function is characterized by comprising the following steps: comprises the following steps:
step (1): coupling reaction to obtain an intermediate product I;
step (2): coupling reaction to obtain an intermediate product II;
and (3): performing Mannich reaction to obtain an intermediate product III;
and (4): and performing Mannich reaction to obtain the vinyl chloride-vinyl acetate copolymer with the function of the dispersing aid, namely the target product IV.
3. The method for preparing vinyl chloride-vinyl acetate copolymer with dispersing aid function as claimed in claim 2, wherein: the step (1) is specifically as follows:
adding vinyl chloride-vinyl acetate copolymer containing 1mol of hydroxyl, 2-5mol of 1, 2-dibromoethane (A) and 2-5mol of alcohol alkali liquor into 50mol of organic solvent a, heating to 100-; slowly adding 90mol of water, stirring for 30min, adding 100mol of organic solvent b, stirring for 30min, standing for layering, taking an organic phase, drying with anhydrous sodium sulfate, filtering, and performing rotary evaporation to obtain an intermediate product I;
the organic solvent a is N, N-dimethylformamide, cyclohexanone or dimethyl sulfoxide,
the organic solvent b is ethyl acetate, butyl acetate or dimethyl sulfoxide,
the alcohol alkali liquor is potassium alcohol liquor or sodium alcohol liquor.
4. The method for preparing vinyl chloride-vinyl acetate copolymer with dispersing aid function as claimed in claim 2, wherein: the step (2) is specifically as follows:
adding 1mol of bromine atom-containing I, 1mol of apigenin (B) and 1mol of potassium carbonate into 80mol of organic solvent a, heating to 100 ℃ and 130 ℃, stirring strongly for 1-3h, cooling, standing, and then carrying out vacuum concentration on the solution, wherein residual components are enriched; slowly adding 90mol of water, stirring for 30min, adding 100mol of organic solvent b, stirring for 30min, standing for layering, taking an organic phase, drying with anhydrous sodium sulfate, filtering, and performing rotary evaporation to obtain an intermediate product II;
the organic solvent a is N, N-dimethylformamide, cyclohexanone or dimethyl sulfoxide,
the organic solvent b is ethyl acetate, butyl acetate or dimethyl sulfoxide.
5. The method for preparing vinyl chloride-vinyl acetate copolymer with dispersing aid function as claimed in claim 2, wherein: the step (3) is specifically as follows:
adding 1mol of apigenin (A) -containing II, 1-1.2mol of amino alcohol derivative (C) and 1-1.2mol of paraformaldehyde into 50mol of organic solvent a, heating to 90-110 ℃, stirring for 4-15h, standing, distilling under reduced pressure, dissolving the concentrate into organic solvent b, cooling, adding 1N sodium hydroxide aqueous solution, washing for 3 times with deionized water, standing, layering, separating, drying the organic phase with anhydrous sodium sulfate, filtering, rotary evaporating and drying in vacuum to obtain an intermediate product III;
the organic solvent a is N, N-dimethylformamide, cyclohexanone or dimethyl sulfoxide,
the organic solvent b is ethyl acetate, butyl acetate or dimethyl sulfoxide.
6. The method for preparing vinyl chloride-vinyl acetate copolymer with dispersing aid function as claimed in claim 2, wherein: the step (4) is specifically as follows:
adding 1mol of secondary amino-containing III, 1-1.2mol of salicylic acid (D) and 1-1.2mol of paraformaldehyde into 50mol of organic solvent a, heating to 90-110 ℃, strongly stirring for 8-20h, standing, distilling under reduced pressure, dissolving the concentrate into organic solvent b, cooling, adding 1N sodium hydroxide aqueous solution, washing for 3 times with deionized water, standing, layering, separating, drying the organic phase with anhydrous sodium sulfate, filtering, rotary steaming, and vacuum drying to obtain a target product IV;
the organic solvent a is N, N-dimethylformamide, cyclohexanone or dimethyl sulfoxide,
the organic solvent b is ethyl acetate, butyl acetate or dimethyl sulfoxide.
7. A vinyl chloride-vinyl acetate resin coating with a dispersing aid function is characterized by comprising the following raw materials in parts by weight: 40-60 parts of UV resin; 20-35 parts of UV monomer diluent; 10-20 parts of pigment; 5-10 parts of vinyl chloride-vinyl acetate copolymer with a dispersing auxiliary function; 0.1-0.5 part of defoaming agent; 0.1-3 parts of a leveling agent; 0.5-3 parts of a photoinitiator;
premixing UV resin, pigment and vinyl chloride-vinyl acetate copolymer resin with the function of dispersing auxiliary agent, dispersing for 30min by using a high-speed dispersion machine, and grinding and dispersing the dispersed paint slurry on a sand mill until the fineness is qualified; and then stirring and adding a defoaming agent, a flatting agent, a photoinitiator and a UV monomer diluent to adjust the viscosity, and finally filtering impurities in the mixture to obtain the vinyl chloride-vinyl acetate copolymer coating with the function of the dispersing aid.
8. The vinyl chloride-vinyl acetate copolymer coating with a dispersing aid function as claimed in claim 7, wherein: the UV resin is one or more of aliphatic polyurethane diacrylate, aliphatic polyurethane triacrylate or aromatic polyurethane triacrylate.
9. The vinyl chloride-vinyl acetate copolymer coating with a dispersing aid function as claimed in claim 7, wherein: the UV monomer diluent is one or more of trimethylolpropane triacrylate, tripropylene glycol diacrylate, 1, 6-hexanediol diacrylate, butyl acrylate or hydroxyethyl acrylate.
10. The vinyl chloride-vinyl acetate copolymer coating with a dispersing aid function as claimed in claim 7, wherein: the pigment is one or more of titanium dioxide, phthalocyanine blue or carbon black, and the photoinitiator is 1173, 184, TPO or BP.
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| JP2007314771A (en) * | 2006-04-28 | 2007-12-06 | Kao Corp | Pigment dispersion |
| CN101423676A (en) * | 2008-12-18 | 2009-05-06 | 江南大学 | Method for preparing non-toxic visible ultraviolet heat insulating UV coating material |
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