Art paint finishing emulsion as well as raw material composition, preparation method and application thereof

Abstract

The invention discloses an art paint finishing emulsion as well as a raw material composition, a preparation method and application thereof. The art paint finishing emulsion comprises the following components in parts by weight: 1-4 parts of an emulsifier, 32-42 parts of a main monomer, 0.7-2 parts of a hydrophilic monomer, 0.3-0.6 part of a crosslinking monomer, 0.1-0.3 part of an initiator, 0.01-0.06 part of an oxidant, 0.21-0.5 part of a reducing agent and 0.5-1.5 parts of a neutralizer. The reducing agent comprises 0.2 to 0.3 part of reducing agent I and 0.01 to 0.04 part of reducing agent II. The finish-coat varnish prepared from the finish-coat emulsion of the art paint can significantly improve the stain resistance of the art paint after being sprayed.

Description

Technical Field

[0001] The invention belongs to the technical field of finishing emulsion preparation, and in particular relates to an artistic paint finishing emulsion, a raw material composition thereof, a preparation method thereof and an application thereof. Background Art

[0002] With the improvement of material level, artistic paint is becoming more and more popular in the field of interior wall decoration for its diverse decorative effects. However, due to the development of society, the types and sources of indoor stains are increasing, and the stain resistance of ordinary interior wall paints can no longer meet the requirements. The decorative nature and special texture structure of artistic paint itself result in poorer stain resistance than ordinary interior walls. Now, an artistic paint topcoat varnish emulsion is needed to solve the problem of poor stain resistance without affecting the color and decorativeness of the artistic paint itself. Summary of the invention

[0003] To solve the above technical problems, the present invention provides an artistic paint finishing emulsion, a raw material composition, a preparation method and an application thereof. The artistic paint finishing emulsion of the present invention is prepared into a finishing varnish, which can significantly improve the stain resistance of the artistic paint after spraying.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0005] In one aspect, the present invention provides a raw material composition of an artistic paint finishing emulsion, which comprises the following components in parts by weight: 1 to 4 parts of an emulsifier, 32 to 42 parts of a main monomer, 0.7 to 2 parts of a hydrophilic monomer, 0.3 to 0.6 parts of a cross-linking monomer, 0.1 to 0.3 parts of an initiator, 0.01 to 0.06 parts of an oxidant, 0.21 to 0.5 parts of a reducing agent, and 0.5 to 1.5 parts of a neutralizer;

[0006] The reducing agent includes 0.2-0.3 parts of reducing agent I and 0.01-0.04 parts of reducing agent II.

[0007] In some embodiments, the main monomer includes 25 to 35 parts of main monomer I and 6 to 10 parts of main monomer II, the main monomer I is at least one of n-butyl methacrylate, tert-butyl acrylate, tert-butyl methacrylate, isodecyl methacrylate, tridecyl methacrylate or heptadecyl methacrylate, and isobornyl methacrylate, and the main monomer II is at least one of methyl methacrylate, ethyl acrylate, butyl acrylate, and isooctyl acrylate;

[0008] In some embodiments, the hydrophilic monomer includes 0.2 to 0.6 parts of hydrophilic monomer I and 0.5 to 1.5 parts of hydrophilic monomer II, wherein the hydrophilic monomer I is at least one of acrylic acid and methacrylic acid, and the hydrophilic monomer II is at least one of acrylic acid, methacrylic acid, itaconic acid, β-CEA, hydroxyethyl acrylate, and hydroxypropyl acrylate;

[0009] In some embodiments, the cross-linking monomer comprises 0.1 to 0.3 parts of a cross-linking monomer I and 0.1 to 0.3 parts of a cross-linking monomer II, wherein the cross-linking monomer I is at least one of ethylene glycol dimethacrylate, glycidyl methacrylate, trimethylolpropane trimethacrylate, and allyl acrylate, and the cross-linking monomer II is at least one of vinyl trimethoxy silane, vinyl tri(β-methoxyethoxy) silane, vinyl triisopropoxy silane, and a urea-based monomer;

[0010] In some embodiments, the initiator is at least one of ammonium persulfate, sodium persulfate, and potassium persulfate;

[0011] In some embodiments, the oxidant is at least one of tert-butyl hydroperoxide and hydrogen peroxide;

[0012] In some embodiments, the neutralizing agent is at least one of ammonia water, sodium hydroxide, potassium hydroxide, and ethanolamine.

[0013] In some embodiments, the reducing agent I is selected from at least one of sodium bisulfite, ferrous sulfate, and sodium pyrosulfite;

[0014] In some embodiments, the reducing agent II is selected from at least one of diatomaceous earth, VC, isoascorbic acid, and FF6M.

[0015] In some embodiments, the emulsifier includes 0.3 to 1.5 parts of emulsifier I, 0.3 to 1.5 parts of emulsifier II, and 0.6 to 1.1 parts of emulsifier III;

[0016] The emulsifier I is at least one of vinyl polyoxyethylene alkyl ether sulfate, alkyl allyl polyoxyethylene ether sulfate, and fatty alcohol polyoxyethylene ether sulfate;

[0017] The emulsifier II is at least one of branched alkyl alcohol polyoxyethylene ether phosphate monoester, lauryl alcohol ether phosphate ester, and reactive phosphate ester;

[0018] The emulsifier III is at least one of vinyl polyoxyethylene alkyl ether ammonium sulfate and allyl polyoxyethylene ether ammonium sulfate.

[0019] In some embodiments, the raw material composition of the artistic paint finishing emulsion further includes 55 to 59 parts of water.

[0020] Another aspect of the present invention provides a method for preparing an artistic paint finishing emulsion, comprising at least:

[0021] (1) After mixing and stirring an emulsifier I and deionized water, a main monomer I, a hydrophilic monomer I and a cross-linking monomer I are added and stirred to obtain a pre-emulsion I;

[0022] (2) After mixing and stirring the emulsifier II and deionized water, the main monomer II, the hydrophilic monomer II and the cross-linking monomer II are added and stirred to obtain a pre-emulsion II;

[0023] (3) Deionized water and emulsifier III are mixed, the temperature is raised to 65-70° C., part of the pre-emulsion I, 30-45% of the initiator and 30-45% of the reducing agent I are added, and then the first heat preservation treatment is carried out. After the heat preservation is completed, the remaining pre-emulsion I, 30-45% of the remaining initiator, and 30-45% of the reducing agent I are added dropwise, and then the second heat preservation treatment is carried out;

[0024] (4) adding the pre-emulsion II, the remaining initiator, and the remaining reducing agent I dropwise at a temperature of 65 to 70° C., and performing heat preservation after the addition is completed;

[0025] (5) After the temperature is lowered to 70-75° C., an oxidant and a reducing agent II are added dropwise at the same time. After the addition is completed, a heat preservation treatment is performed, and then the temperature is lowered to below 45° C. and a neutralizing agent is added to obtain the artistic paint finishing emulsion.

[0026] In step (1), the amount of deionized water used is 8 to 12 parts;

[0027] In step (1), the stirring time is 20 to 30 minutes;

[0028] In step (2), the amount of deionized water used is 3 to 5 parts;

[0029] In step (2), the stirring time is 20 to 30 minutes;

[0030] In step (3), the amount of deionized water is 25 to 38 parts;

[0031] In step (3), the amount of the partial pre-emulsion I is 5-8% of the total amount of the pre-emulsion I;

[0032] In step (3), the first heat preservation treatment time is 10 to 30 minutes;

[0033] In step (3), the dripping time is 150 to 200 minutes;

[0034] In step (3), the second heat preservation treatment time is 20 to 30 minutes;

[0035] In step (4), the dropping time is 30 to 50 minutes;

[0036] In step (4), the heat preservation treatment time is 60 to 90 minutes;

[0037] In step (4), the temperature of the heat preservation treatment is 82-85° C.;

[0038] In step (5), the dropping time is 30 to 50 minutes;

[0039] In step (5), the heat preservation treatment time is 20 to 30 minutes.

[0040] The initiator is added in the form of an aqueous solution, preferably, the initiator is dissolved in 3 to 5 parts of deionized water;

[0041] The reducing agent I is added in the form of an aqueous solution. Preferably, the reducing agent I is dissolved in 2 to 5 parts of deionized water;

[0042] The reducing agent II is added in the form of an aqueous solution. Preferably, the reducing agent II is dissolved in 1 to 4 parts of deionized water;

[0043] The oxidant is added in the form of an aqueous solution. Preferably, the oxidant is dissolved in 1 to 4 parts of deionized water.

[0044] The third aspect of the present invention further provides an artistic paint finishing emulsion, which is prepared by the preparation method of the artistic paint finishing emulsion.

[0045] The fourth aspect of the present invention also provides an application of the above-mentioned artistic paint finishing emulsion in the field of interior wall decoration.

[0046] The reagents and raw materials used in the present invention are commercially available.

[0047] The positive and progressive effects of the present invention are:

[0048] 1. The artistic paint finishing emulsion of the present invention adopts a low-temperature oxidation-reduction synthesis method during the synthesis process, which can increase the molecular weight of the polymer, thereby increasing the hardness and toughness of the paint film. In addition, the anti-fouling and washability of the finishing emulsion can also be improved.

[0049] 2. The artistic paint finishing emulsion of the present invention adopts a core-shell process during the synthesis process. The core layer adopts n-butyl methacrylate, tert-butyl acrylate, tridecyl methacrylate and the like as main raw materials to form a hydrophobic core layer. Hydrophilic hydroxyethyl acrylate and long-chain β-CEA are added to the shell layer. The hydrophobic core layer can resist the penetration of stain sources, and the hydrophilic shell layer is enriched on the surface of the paint film. At the same time, the emulsifier of the shell layer also uses a phosphate emulsifier with stronger decontamination ability than ordinary emulsifiers, which makes it easier to clean the stain sources attached to the surface, thereby achieving a lasting anti-stain ability.

[0050] 3. The microemulsion synthesis technology is adopted in the synthesis process of the artistic paint finishing emulsion of the present invention. The synthetic emulsion has a small particle size and has excellent permeability when sprayed on an artistic surface with many textures. The seed synthesis process is adopted to make its particle size distribution narrow and the light transmittance good. The original decorative effect of the artistic paint is not affected after construction. At the same time, by using cross-linking monomers, the emulsion film is made more uniform and dense, further improving the anti-fouling performance and washability of the finishing emulsion. DETAILED DESCRIPTION

[0051] The present invention is described in detail below in conjunction with the embodiments, and the technical scheme of the present invention is clearly and completely described to facilitate the understanding of the present invention by those skilled in the art. The described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention. At the same time, the raw materials mentioned below that are not described in detail are all commercially available products; the process steps or preparation methods not mentioned in detail are process steps or preparation methods known to those skilled in the art.

[0052] Example 1

[0053] The preparation of the artistic paint finishing emulsion comprises the following specific steps:

[0054] a. Preparation of pre-emulsification: add 5g of vinyl polyoxyethylene alkyl ether ammonium sulfate emulsifier and 90g of deionized water to a clean pre-emulsification bottle and stir for 25min, add 200g of tert-butyl acrylate, 80g of tert-butyl carbonate, 32g of tridecyl methacrylate, 3g of isobornyl methacrylate, 2.4g of methacrylic acid, 3g of glycidyl methacrylate, stir for 25min as pre-emulsion I for standby use; in the same way, add 4g of reactive phosphate emulsifier, 30g of deionized water, 32g of methyl methacrylate, 40g of isooctyl acrylate, 8g of β-CEA, 3g of hydroxyethyl acrylate and 2g of vinyl organosilicon monomer to prepare pre-emulsion II for standby use;

[0055] b. Reactor: Add 9g of vinyl polyoxyethylene alkyl ether ammonium sulfate emulsifier and 380g of deionized water into a clean 2L four-necked flask, stir and heat to 65-70°C;

[0056] c. Prepare initiator solution and reducing agent solution: dissolve 0.002g of ferrous sulfate in 2g of deionized water as solution ①, dissolve 0.8g of ammonium persulfate in 10g of deionized water as solution ②, dissolve 0.8g of sodium bisulfite in 10g of deionized water as solution ③, dissolve 0.8g of ammonium persulfate in 20g of deionized water as solution ④, dissolve 0.8g of sodium bisulfite in 20g of deionized water as solution ⑤, dissolve 0.4g of ammonium persulfate in 10g of deionized water as solution ⑥, and dissolve 0.4g of sodium bisulfite in 10g of deionized water as solution ⑦;

[0057] d. Seed collection and reaction process: When the temperature of the reactor reaches 65-70°C, add 5% of pre-emulsified solution I into the reactor. After 2 minutes, add solution ①, solution ②, and solution ③ in sequence. When the appearance of the emulsion in the reactor turns blue and the temperature stabilizes, keep warm for 20 minutes, then start dripping the remaining pre-emulsified solution I, and simultaneously drip solution ④ and solution ⑤. The dripping time is 180 minutes, and the heat preservation is carried out for 30 minutes. After the heat preservation is completed, start dripping pre-emulsified solution II and solution ⑥ and solution ⑦. The dripping time is 30 minutes. After the dripping is completed, heat up to 82-84°C and keep warm for 60 minutes;

[0058] e. Post-elimination: Cool down the temperature to 70-72°C, dissolve 0.5g of tert-butyl hydroperoxide and 0.35g of FF6M in 10g of deionized water respectively, and then drop the dissolved redox agent at the same time, the dropping time is 30min, and keep warm for 20min;

[0059] f. Tailings: cool to below 45°C, neutralize with 0.8 parts of aqueous ammonia, and adjust the pH to 7-8.5.

[0060] Example 2

[0061] The preparation of the artistic paint finishing emulsion comprises the following specific steps:

[0062] a. Preparation of pre-emulsification: add 5g of allyl polyoxyethylene ether ammonium sulfate emulsifier and 90g of deionized water to a clean pre-emulsification bottle and stir for 25min, add tert-butyl acrylate 180g, tert-butyl acrylate 116g, tert-butyl methacrylate 16g, ethylene glycol dimethacrylate 3g, methacrylic acid 2.4g, glycidyl methacrylate 3g, stir for 25min as pre-emulsion I for standby use; in the same way, add 4g of branched alkyl alcohol polyoxyethylene ether phosphate monoester emulsifier, 30g of deionized water, 30g of methyl methacrylate, 42g of butyl acrylate, 4g of β-CEA, 4g of itaconic acid, 3g of hydroxyethyl acrylate, and 2g of vinyl silicone monomer to prepare pre-emulsion II for standby use;

[0063] b. Reactor: Add 9g of allyl polyoxyethylene ether ammonium sulfate emulsifier and 380g of deionized water into a clean 2L four-necked flask, stir and heat to 65-70°C;

[0064] c. Prepare initiator solution and reducing agent solution: dissolve 0.002g of ferrous sulfate in 2g of deionized water as solution ①, dissolve 0.8g of ammonium persulfate in 10g of deionized water as solution ②, dissolve 0.8g of sodium bisulfite in 10g of deionized water as solution ③, dissolve 0.8g of ammonium persulfate in 20g of deionized water as solution ④, dissolve 0.8g of sodium bisulfite in 20g of deionized water as solution ⑤, dissolve 0.4g of ammonium persulfate in 10g of deionized water as solution ⑥, and dissolve 0.4g of sodium bisulfite in 10g of deionized water as solution ⑦;

[0065] d. Seed collection and reaction process: After the temperature of the reactor reaches 65-70°C, add 5% of pre-emulsified I into the reactor. After 2 minutes, add solution ①, solution ②, and solution ③ in sequence. After the appearance of the emulsion in the reactor turns blue and the temperature stabilizes, keep warm for 10 minutes, then start dripping the remaining pre-emulsified I, and at the same time drip solution ④ and solution ⑤. The dripping time is 180 minutes. After the dripping is completed, keep warm for 30 minutes. After the insulation is completed, start dripping pre-emulsified II and solution ⑥ and solution ⑦. The dripping time is 30 minutes. After the dripping is completed, raise the temperature to 82-84°C and keep warm for 60 minutes;

[0066] e. Post-elimination: Cool down the temperature to 70-72°C, dissolve 0.5g of tert-butyl hydroperoxide and 0.35g of FF6M in 10g of deionized water respectively, and then drop the dissolved redox agent at the same time, the dropping time is 30min, and keep warm for 20min;

[0067] f. Tailings: cool to below 45°C, neutralize with 0.8 parts of aqueous ammonia, and adjust the pH to 7-8.5.

[0068] Example 3

[0069] The preparation of the artistic paint finishing emulsion comprises the following specific steps:

[0070] a. Preparation of pre-emulsification: add 3g of allyl polyoxyethylene ether ammonium sulfate emulsifier and 90g of deionized water to a clean pre-emulsification bottle, stir for 25min, add tert-butyl acrylate 190g, n-butyl methacrylate 90g, isodecyl methacrylate 32g, isobornyl methacrylate 3g, methacrylic acid 2.4g, trimethylolpropane trimethacrylate 3g, stir for 25min as pre-emulsion I for standby use; in the same way, add 8g of branched alkyl alcohol polyoxyethylene ether phosphate monoester emulsifier, 30g of deionized water, 32g of methyl methacrylate, 40g of isooctyl acrylate, 4g of β-CEA, 4g of acrylic acid, 3g of hydroxyethyl acrylate, and 2g of urea monomer to prepare pre-emulsion II for standby use;

[0071] b. Reactor: Add 10.5g of allyl polyoxyethylene ether ammonium sulfate emulsifier and 380g of deionized water into a clean 2L four-necked flask, stir and heat to 65-70°C;

[0072] c. Prepare initiator solution and reducing agent solution: dissolve 0.002g of ferrous sulfate in 2g of deionized water as solution ①, dissolve 0.8g of ammonium persulfate in 10g of deionized water as solution ②, dissolve 0.8g of sodium bisulfite in 10g of deionized water as solution ③, dissolve 0.8g of ammonium persulfate in 20g of deionized water as solution ④, dissolve 0.8g of sodium bisulfite in 20g of deionized water as solution ⑤, dissolve 0.4g of ammonium persulfate in 10g of deionized water as solution ⑥, and dissolve 0.4g of sodium bisulfite in 10g of deionized water as solution ⑦;

[0073] d. Seed collection and reaction process: After the temperature of the reactor reaches 65-70°C, add 5% of pre-emulsified I into the reactor. After 2 minutes, add solution ①, solution ②, and solution ③ in sequence. After the appearance of the emulsion in the reactor turns blue and the temperature stabilizes, keep warm for 10 minutes, then start dripping the remaining pre-emulsified I, and at the same time drip solution ④ and solution ⑤. The dripping time is 180 minutes. After the dripping is completed, keep warm for 30 minutes. After the insulation is completed, start dripping pre-emulsified II and solution ⑥ and solution ⑦. The dripping time is 30 minutes. After the dripping is completed, raise the temperature to 82-84°C and keep warm for 60 minutes;

[0074] e. Post-elimination: Cool down the temperature to 70-72°C, dissolve 0.5g of tert-butyl hydroperoxide and 0.35g of FF6M in 10g of deionized water respectively, and then drop the dissolved redox agent at the same time, the dropping time is 30min, and keep warm for 20min;

[0075] f. Tailings: cool to below 45°C, neutralize with 0.8 parts of aqueous ammonia, and adjust the pH to 7-8.5.

[0076] Example 4

[0077] The preparation of the artistic paint finishing emulsion comprises the following specific steps:

[0078] a. Preparation of pre-emulsification: add 8g of allyl polyoxyethylene ether ammonium sulfate emulsifier and 90g of deionized water to a clean pre-emulsification bottle, stir for 25min, add tert-butyl acrylate 130g, n-butyl methacrylate 150g, isodecyl methacrylate 32g, isobornyl methacrylate 3g, methacrylic acid 2.4g, trimethylolpropane trimethacrylate 3g, stir for 25min as pre-emulsion I for standby use; in the same way, add 3g of branched alkyl alcohol polyoxyethylene ether phosphate monoester emulsifier, 30g of deionized water, 38g of methyl methacrylate, 34g of butyl acrylate, 4g of β-CEA, 4g of acrylic acid, 3g of hydroxypropyl acrylate, and 2g of urea monomer to prepare pre-emulsion II for standby use;

[0079] b. Reactor: Add 6.5g of allyl polyoxyethylene ether ammonium sulfate emulsifier and 380g of deionized water into a clean 2L four-necked flask, stir and heat to 65-70°C;

[0080] c. Prepare initiator solution and reducing agent solution: dissolve 0.002g of ferrous sulfate in 2g of deionized water as solution ①, dissolve 0.8g of ammonium persulfate in 10g of deionized water as solution ②, dissolve 0.8g of sodium bisulfite in 10g of deionized water as solution ③, dissolve 0.8g of ammonium persulfate in 20g of deionized water as solution ④, dissolve 0.8g of sodium bisulfite in 20g of deionized water as solution ⑤, dissolve 0.4g of ammonium persulfate in 10g of deionized water as solution ⑥, and dissolve 0.4g of sodium bisulfite in 10g of deionized water as solution ⑦;

[0081] d. Seed collection and reaction process: After the temperature of the reactor reaches 65-70°C, add 5% of pre-emulsified I into the reactor. After 2 minutes, add solution ①, solution ②, and solution ③ in sequence. After the appearance of the emulsion in the reactor turns blue and the temperature stabilizes, keep warm for 10 minutes, then start dripping the remaining pre-emulsified I, and at the same time drip solution ④ and solution ⑤. The dripping time is 180 minutes. After the dripping is completed, keep warm for 30 minutes. After the insulation is completed, start dripping pre-emulsified II and solution ⑥ and solution ⑦. The dripping time is 30 minutes. After the dripping is completed, raise the temperature to 82-84°C and keep warm for 60 minutes;

[0082] e. Post-elimination: Cool down the temperature to 70-72°C, dissolve 0.5g of tert-butyl hydroperoxide and 0.35g of FF6M in 10g of deionized water respectively, and then drop the dissolved redox agent at the same time, the dropping time is 30min, and keep warm for 20min;

[0083] f. Tailings: cool to below 45°C, neutralize with 0.8 parts of aqueous ammonia, and adjust the pH to 7-8.5.

[0084] The present invention also provides the following comparative examples.

[0085] Comparative Example 1

[0086] With reference to Example 1, the temperature during the reaction was adjusted, that is, the temperature of the reactor during the seed removal and reaction in step (d) was adjusted from the original 65-70° C. to 80-82° C., and the remaining operations were consistent with Example 1.

[0087] Comparative Example 2

[0088] Taking Example 1 as a reference, the solid content of 5 g of vinyl polyoxyethylene alkyl ether ammonium sulfate emulsifier and the like in the pre-emulsification I in step (a) was replaced with 16.667 g of Clariant EPA073 emulsifier;

[0089] Replace the solid content of 4g reactive phosphate emulsifier etc. in pre-emulsification II with 13.3g Solvay DES30 emulsifier;

[0090] The solid content of 9 g of vinyl polyoxyethylene alkyl ether ammonium sulfate emulsifier and the like in the reaction kettle of step (b) was replaced with 27 g of Clariant EPA073 emulsifier, and the remaining operations were consistent with Example 1.

[0091] Comparative Example 3

[0092] With reference to Example 1, the hydrophobic monomers tert-butyl acrylate, tert-butyl vinyl carbonate, and tridecyl methacrylate in the pre-emulsification I in step (a) are replaced with methyl methacrylate and butyl acrylate, and the core layer glass transition temperature of the latex particles is ensured to remain unchanged, that is, 186 g of methyl methacrylate and 126 g of butyl acrylate, and the rest of the operation is consistent with Example 1.

[0093] Comparative Example 4

[0094] With reference to Example 1, the mass of tridecyl methacrylate in the pre-emulsification I in step (a) was replaced with isooctyl acrylate, and the remaining operations were consistent with Example 1.

[0095] Comparative Example 5

[0096] With reference to Example 1, the β-CEA in the pre-emulsification II in step (a) was removed, and the remaining operations were consistent with Example 1.

[0097] Comparative Example 6

[0098] With reference to Example 1, the amount of vinyl polyoxyethylene alkyl ether ammonium sulfate emulsifier in step (b) was adjusted to 0.5 g, and the remaining operations were consistent with Example 1.

[0099] Comparative Example 7

[0100] Commercially available product, model number RS-8630 produced by Badfu Group Co., Ltd.

[0101] Product performance testing

[0102] The emulsions prepared in the examples and comparative examples were tested, and the test standards and methods were as follows:

[0103] 1. Solid content test method: According to 4.3 test in GB / T 20623-2006;

[0104] 2. Viscosity test: The test was conducted using Brookfield LV 25°C, 2#, 60rpm;

[0105] 3. Particle size test: Malvern particle size tester ZEN1690.

[0106] The performance of the products prepared in Examples 1 to 4 and Comparative Examples 1 to 7 was tested, and the results are shown in Table 1.

[0107] Table 1

[0108]

[0109]

[0110] The emulsions prepared in Examples 1 to 4 and Comparative Examples 1 to 7 were formulated into topcoat varnishes according to Table 2, and then subjected to a stain resistance test according to HG / T 4756-2014 for stain-resistant latex paint for interior walls and a wash resistance test according to HG / T5065-2016 for test methods for topcoat varnishes for architectural coatings. The stain resistance test results are shown in Table 3, and the wash resistance test results are shown in Table 4.

[0111] Table 2 Top coat varnish formula

[0112] Components specific ingredients content water Deionized water 300 antifreeze Sinopec PG 5 Film-forming aids Eastman alcohol ester 12 30 pH Adjuster Dow AMP-95 1.5 Fungicides Rohm and Haas LXE 1.5 Facial lotion Example results 600 Thickener Rohm and Haas RM-8W 8 Defoaming agent Tego 902 1.5 water Deionized water 52.5 Total 1000

[0113] Table 3 Stain resistance test results

[0114]

[0115]

[0116] Table 4 Washability test results

[0117]

[0118] From the stain resistance and scrub resistance test results in Table 3 and Table 4, it can be seen that the overall effect of the embodiments is better, while the effects of the comparative examples are not as good as those of the embodiments.

[0119] Finally, it should be noted that in the present invention, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements that are inherent to such process, method, article or apparatus.

[0120] Although the present disclosure has been disclosed above through the description of the specific embodiments of the present disclosure, it should be understood that those skilled in the art can design various modifications, improvements or equivalents to the present disclosure within the spirit and scope of the attached scheme. These modifications, improvements or equivalents should also be considered to be included in the scope of protection claimed by the present disclosure.

Claims

1. A raw material composition of an artistic paint finishing emulsion, characterized in that: It includes the following components in parts by weight: Emulsifier 1-4 parts, main monomer 32-42 parts, hydrophilic monomer 0.7-2 parts, cross-linking monomer 0.3-0.6 parts, initiator 0.1-0.3 parts, oxidant 0.01-0.06 parts, reducing agent 0.21-0.5 parts, neutralizer 0.5-1.5 parts; The reducing agent includes 0.2-0.3 parts of reducing agent I and 0.01-0.04 parts of reducing agent II.

2. The raw material composition of the artistic paint finishing emulsion according to claim 1, characterized in that: The main monomer comprises 25 to 35 parts of main monomer I and 6 to 10 parts of main monomer II, wherein the main monomer I is at least one of n-butyl methacrylate, tert-butyl acrylate, tert-butyl acrylate, isodecyl methacrylate, tridecyl methacrylate or heptadecyl methacrylate, and isobornyl methacrylate, and the main monomer II is at least one of methyl methacrylate, ethyl acrylate, butyl acrylate, and isooctyl acrylate; And / or, the hydrophilic monomer comprises 0.2-0.6 parts of hydrophilic monomer I and 0.5-1.5 parts of hydrophilic monomer II, the hydrophilic monomer I is at least one of acrylic acid and methacrylic acid, and the hydrophilic monomer II is at least one of acrylic acid, methacrylic acid, itaconic acid, β-CEA, hydroxyethyl acrylate, and hydroxypropyl acrylate; And / or, the cross-linking monomer comprises 0.1 to 0.3 parts of a cross-linking monomer I and 0.1 to 0.3 parts of a cross-linking monomer II, wherein the cross-linking monomer I is at least one of ethylene glycol dimethacrylate, glycidyl methacrylate, trimethylolpropane trimethacrylate, and allyl acrylate, and the cross-linking monomer II is at least one of vinyl trimethoxy silane, vinyl tri(β-methoxyethoxy) silane, vinyl triisopropoxy silane, and a urea-based monomer; And / or, the initiator is at least one of ammonium persulfate, sodium persulfate, and potassium persulfate; And / or, the oxidant is at least one of tert-butyl hydroperoxide and hydrogen peroxide; And / or, the neutralizing agent is at least one of ammonia water, sodium hydroxide, potassium hydroxide, and ethanolamine.

3. The raw material composition of the artistic paint finishing emulsion according to claim 1, characterized in that: The reducing agent I is selected from at least one of sodium bisulfite, ferrous sulfate, and sodium pyrosulfite; And / or, the reducing agent II is selected from at least one of diatomaceous earth, VC, isoascorbic acid, and FF6M.

4. The raw material composition of the artistic paint finishing emulsion according to claim 1, characterized in that: The emulsifier includes 0.3 to 1.5 parts of emulsifier I, 0.3 to 1.5 parts of emulsifier II and 0.6 to 1.1 parts of emulsifier III; The emulsifier I is at least one of vinyl polyoxyethylene alkyl ether sulfate, alkyl allyl polyoxyethylene ether sulfate, and fatty alcohol polyoxyethylene ether sulfate; The emulsifier II is at least one of branched alkyl alcohol polyoxyethylene ether phosphate monoester, lauryl alcohol ether phosphate ester, and reactive phosphate ester; The emulsifier III is at least one of vinyl polyoxyethylene alkyl ether ammonium sulfate and allyl polyoxyethylene ether ammonium sulfate.

5. The raw material composition of the artistic paint finishing emulsion according to claim 1, characterized in that: The raw material composition of the artistic paint finishing emulsion further includes 55 to 59 parts of water.

6. A method for preparing an artistic paint finishing emulsion, characterized in that: The raw materials of the artistic paint finishing emulsion include the raw material composition of the artistic paint finishing emulsion according to any one of claims 1 to 5, and the method includes the following steps: (1) After mixing and stirring an emulsifier I and deionized water, a main monomer I, a hydrophilic monomer I and a cross-linking monomer I are added and stirred to obtain a pre-emulsion I; (2) After mixing and stirring the emulsifier II and deionized water, the main monomer II, the hydrophilic monomer II and the cross-linking monomer II are added and stirred to obtain a pre-emulsion II; (3) Deionized water and emulsifier III are mixed, the temperature is raised to 65-70° C., part of the pre-emulsion I, 30-45% of the initiator and 30-45% of the reducing agent I are added, and then the first heat preservation treatment is carried out. After the heat preservation is completed, the remaining pre-emulsion I, 30-45% of the remaining initiator and 30-45% of the reducing agent I are added dropwise, and then the second heat preservation treatment is carried out; (4) adding the pre-emulsion II, the remaining initiator, and the remaining reducing agent I dropwise at a temperature of 65 to 70° C., and performing heat preservation after the addition is completed; (5) After the temperature is lowered to 70-75° C., an oxidant and a reducing agent II are added dropwise at the same time. After the addition is completed, a heat preservation treatment is performed, and then the temperature is lowered to below 45° C. and a neutralizing agent is added to obtain the artistic paint finishing emulsion.

7. The method for preparing the artistic paint finishing emulsion according to claim 6, characterized in that: The preparation method satisfies at least one of the following conditions: In step (1), the amount of deionized water used is 8 to 12 parts; In step (1), the stirring time is 20 to 30 minutes; In step (2), the amount of deionized water used is 3 to 5 parts; In step (2), the stirring time is 20 to 30 minutes; In step (3), the amount of deionized water used is 25 to 38 parts; In step (3), the amount of the partial pre-emulsion I is 5-8% of the total amount of the pre-emulsion I; In step (3), the first heat preservation treatment time is 10 to 30 minutes; In step (3), the dropping time is 150 to 200 minutes; In step (3), the second heat preservation treatment time is 20 to 30 minutes; In step (4), the dropping time is 30 to 50 minutes; In step (4), the heat preservation treatment time is 60 to 90 minutes; In step (4), the temperature of the heat preservation treatment is 82-85° C.; In step (5), the dropping time is 30 to 50 minutes; In step (5), the heat preservation treatment time is 20 to 30 minutes.

8. The method for preparing the artistic paint finishing emulsion according to claim 6, characterized in that: The preparation method satisfies at least one of the following conditions: The initiator is added in the form of an aqueous solution, preferably, the initiator is dissolved in 3 to 5 parts of deionized water; The reducing agent I is added in the form of an aqueous solution. Preferably, the reducing agent I is dissolved in 2 to 5 parts of deionized water; The reducing agent II is added in the form of an aqueous solution. Preferably, the reducing agent II is dissolved in 1 to 4 parts of deionized water; The oxidant is added in the form of an aqueous solution. Preferably, the oxidant is dissolved in 1 to 4 parts of deionized water.

9. An artistic paint finishing emulsion, characterized in that: The invention discloses an artistic paint finishing emulsion prepared by the method for preparing the artistic paint finishing emulsion as claimed in any one of claims 6 to 8.

10. Use of the artistic paint finishing emulsion as claimed in claim 9 in the field of interior wall decoration.

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