CN113105579A - Paint thickening and water-retaining agent and preparation method thereof - Google Patents
Paint thickening and water-retaining agent and preparation method thereof Download PDFInfo
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- CN113105579A CN113105579A CN202110271804.5A CN202110271804A CN113105579A CN 113105579 A CN113105579 A CN 113105579A CN 202110271804 A CN202110271804 A CN 202110271804A CN 113105579 A CN113105579 A CN 113105579A
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- China
- Prior art keywords
- water
- thickening
- coating
- retaining agent
- parts
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- 230000008719 thickening Effects 0.000 title claims abstract description 81
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 70
- 239000003973 paint Substances 0.000 title claims abstract description 48
- 238000002360 preparation method Methods 0.000 title description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 87
- 239000000178 monomer Substances 0.000 claims abstract description 32
- 238000006243 chemical reaction Methods 0.000 claims abstract description 30
- 239000003999 initiator Substances 0.000 claims abstract description 29
- 239000012874 anionic emulsifier Substances 0.000 claims abstract description 15
- 239000007800 oxidant agent Substances 0.000 claims abstract description 10
- 239000000126 substance Substances 0.000 claims abstract description 10
- 239000012875 nonionic emulsifier Substances 0.000 claims abstract description 9
- 229920002818 (Hydroxyethyl)methacrylate Polymers 0.000 claims abstract description 8
- WOBHKFSMXKNTIM-UHFFFAOYSA-N Hydroxyethyl methacrylate Chemical compound CC(=C)C(=O)OCCO WOBHKFSMXKNTIM-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 7
- QZPSOSOOLFHYRR-UHFFFAOYSA-N 3-hydroxypropyl prop-2-enoate Chemical compound OCCCOC(=O)C=C QZPSOSOOLFHYRR-UHFFFAOYSA-N 0.000 claims abstract description 6
- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical compound OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000006172 buffering agent Substances 0.000 claims abstract description 5
- 230000001590 oxidative effect Effects 0.000 claims abstract description 5
- GNSFRPWPOGYVLO-UHFFFAOYSA-N 3-hydroxypropyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OCCCO GNSFRPWPOGYVLO-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000000576 coating method Methods 0.000 claims description 110
- 239000011248 coating agent Substances 0.000 claims description 107
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 claims description 42
- CIHOLLKRGTVIJN-UHFFFAOYSA-N tert‐butyl hydroperoxide Chemical compound CC(C)(C)OO CIHOLLKRGTVIJN-UHFFFAOYSA-N 0.000 claims description 40
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 38
- 239000000839 emulsion Substances 0.000 claims description 24
- 238000002156 mixing Methods 0.000 claims description 23
- ZZZCUOFIHGPKAK-UHFFFAOYSA-N D-erythro-ascorbic acid Natural products OCC1OC(=O)C(O)=C1O ZZZCUOFIHGPKAK-UHFFFAOYSA-N 0.000 claims description 21
- 229930003268 Vitamin C Natural products 0.000 claims description 21
- 235000019154 vitamin C Nutrition 0.000 claims description 21
- 239000011718 vitamin C Substances 0.000 claims description 21
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 19
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 claims description 12
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 9
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 9
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 claims description 8
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 claims description 7
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 7
- -1 acrylic ester Chemical class 0.000 claims description 7
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 7
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 claims description 7
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 7
- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical compound NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 claims description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 6
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 6
- SCVFZCLFOSHCOH-UHFFFAOYSA-M potassium acetate Chemical compound [K+].CC([O-])=O SCVFZCLFOSHCOH-UHFFFAOYSA-M 0.000 claims description 6
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 6
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 claims description 6
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims description 5
- SOGAXMICEFXMKE-UHFFFAOYSA-N Butylmethacrylate Chemical compound CCCCOC(=O)C(C)=C SOGAXMICEFXMKE-UHFFFAOYSA-N 0.000 claims description 4
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 claims description 4
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 4
- 125000005233 alkylalcohol group Chemical group 0.000 claims description 4
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 claims description 3
- 150000001408 amides Chemical class 0.000 claims description 3
- 239000000872 buffer Substances 0.000 claims description 3
- ZPWVASYFFYYZEW-UHFFFAOYSA-L dipotassium hydrogen phosphate Chemical compound [K+].[K+].OP([O-])([O-])=O ZPWVASYFFYYZEW-UHFFFAOYSA-L 0.000 claims description 3
- BNIILDVGGAEEIG-UHFFFAOYSA-L disodium hydrogen phosphate Chemical compound [Na+].[Na+].OP([O-])([O-])=O BNIILDVGGAEEIG-UHFFFAOYSA-L 0.000 claims description 3
- 229910000402 monopotassium phosphate Inorganic materials 0.000 claims description 3
- 235000019796 monopotassium phosphate Nutrition 0.000 claims description 3
- 235000019799 monosodium phosphate Nutrition 0.000 claims description 3
- 229910000403 monosodium phosphate Inorganic materials 0.000 claims description 3
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims description 3
- PJNZPQUBCPKICU-UHFFFAOYSA-N phosphoric acid;potassium Chemical compound [K].OP(O)(O)=O PJNZPQUBCPKICU-UHFFFAOYSA-N 0.000 claims description 3
- 235000011056 potassium acetate Nutrition 0.000 claims description 3
- 239000011736 potassium bicarbonate Substances 0.000 claims description 3
- 229910000028 potassium bicarbonate Inorganic materials 0.000 claims description 3
- 235000015497 potassium bicarbonate Nutrition 0.000 claims description 3
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 3
- 235000011181 potassium carbonates Nutrition 0.000 claims description 3
- 239000001508 potassium citrate Substances 0.000 claims description 3
- 229960002635 potassium citrate Drugs 0.000 claims description 3
- QEEAPRPFLLJWCF-UHFFFAOYSA-K potassium citrate (anhydrous) Chemical compound [K+].[K+].[K+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O QEEAPRPFLLJWCF-UHFFFAOYSA-K 0.000 claims description 3
- 235000011082 potassium citrates Nutrition 0.000 claims description 3
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 claims description 3
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 3
- 239000001632 sodium acetate Substances 0.000 claims description 3
- 235000017281 sodium acetate Nutrition 0.000 claims description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 3
- 239000001509 sodium citrate Substances 0.000 claims description 3
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical compound O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 claims description 3
- 235000011083 sodium citrates Nutrition 0.000 claims description 3
- AJPJDKMHJJGVTQ-UHFFFAOYSA-M sodium dihydrogen phosphate Chemical compound [Na+].OP(O)([O-])=O AJPJDKMHJJGVTQ-UHFFFAOYSA-M 0.000 claims description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 claims description 2
- SUPCQIBBMFXVTL-UHFFFAOYSA-N ethyl 2-methylprop-2-enoate Chemical compound CCOC(=O)C(C)=C SUPCQIBBMFXVTL-UHFFFAOYSA-N 0.000 claims description 2
- NHARPDSAXCBDDR-UHFFFAOYSA-N propyl 2-methylprop-2-enoate Chemical compound CCCOC(=O)C(C)=C NHARPDSAXCBDDR-UHFFFAOYSA-N 0.000 claims description 2
- PNXMTCDJUBJHQJ-UHFFFAOYSA-N propyl prop-2-enoate Chemical compound CCCOC(=O)C=C PNXMTCDJUBJHQJ-UHFFFAOYSA-N 0.000 claims description 2
- WROUWQQRXUBECT-UHFFFAOYSA-N 2-ethylacrylic acid Chemical compound CCC(=C)C(O)=O WROUWQQRXUBECT-UHFFFAOYSA-N 0.000 claims 1
- KCCUBRRTVWFOGF-UHFFFAOYSA-N 2-tritylphenol Chemical compound OC1=CC=CC=C1C(C=1C=CC=CC=1)(C=1C=CC=CC=1)C1=CC=CC=C1 KCCUBRRTVWFOGF-UHFFFAOYSA-N 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 8
- 239000007787 solid Substances 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 3
- 238000003756 stirring Methods 0.000 description 38
- 206010016807 Fluid retention Diseases 0.000 description 33
- 239000000123 paper Substances 0.000 description 31
- 239000003995 emulsifying agent Substances 0.000 description 25
- 238000004321 preservation Methods 0.000 description 25
- 239000000243 solution Substances 0.000 description 24
- 230000000052 comparative effect Effects 0.000 description 20
- 238000001816 cooling Methods 0.000 description 10
- 238000005303 weighing Methods 0.000 description 10
- 239000011837 N,N-methylenebisacrylamide Substances 0.000 description 7
- 239000002585 base Substances 0.000 description 7
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical compound C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 description 7
- 239000002562 thickening agent Substances 0.000 description 7
- 238000007599 discharging Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 5
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 5
- 238000004945 emulsification Methods 0.000 description 5
- 230000001804 emulsifying effect Effects 0.000 description 5
- 239000000049 pigment Substances 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 230000035484 reaction time Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 238000009472 formulation Methods 0.000 description 4
- 230000005012 migration Effects 0.000 description 4
- 238000013508 migration Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000007858 starting material Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- TVFWYUWNQVRQRG-UHFFFAOYSA-N 2,3,4-tris(2-phenylethenyl)phenol Chemical compound C=1C=CC=CC=1C=CC1=C(C=CC=2C=CC=CC=2)C(O)=CC=C1C=CC1=CC=CC=C1 TVFWYUWNQVRQRG-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 235000013305 food Nutrition 0.000 description 2
- 125000001165 hydrophobic group Chemical group 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 101150056366 BEM2 gene Proteins 0.000 description 1
- 101000650808 Homo sapiens Semaphorin-3G Proteins 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 206010039509 Scab Diseases 0.000 description 1
- 102100027750 Semaphorin-3G Human genes 0.000 description 1
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 description 1
- 239000002671 adjuvant Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 239000012154 double-distilled water Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 229920006158 high molecular weight polymer Polymers 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 description 1
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 description 1
- DAJSVUQLFFJUSX-UHFFFAOYSA-M sodium;dodecane-1-sulfonate Chemical compound [Na+].CCCCCCCCCCCCS([O-])(=O)=O DAJSVUQLFFJUSX-UHFFFAOYSA-M 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229910021642 ultra pure water Inorganic materials 0.000 description 1
- 239000012498 ultrapure water Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/04—Acids; Metal salts or ammonium salts thereof
- C08F220/06—Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/12—Polymerisation in non-solvents
- C08F2/16—Aqueous medium
- C08F2/22—Emulsion polymerisation
- C08F2/24—Emulsion polymerisation with the aid of emulsifying agents
- C08F2/26—Emulsion polymerisation with the aid of emulsifying agents anionic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/12—Polymerisation in non-solvents
- C08F2/16—Aqueous medium
- C08F2/22—Emulsion polymerisation
- C08F2/24—Emulsion polymerisation with the aid of emulsifying agents
- C08F2/30—Emulsion polymerisation with the aid of emulsifying agents non-ionic
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H19/00—Coated paper; Coating material
- D21H19/10—Coatings without pigments
- D21H19/14—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12
- D21H19/20—Coatings without pigments applied in a form other than the aqueous solution defined in group D21H19/12 comprising macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a paint thickening and water retaining agent, which comprises the following raw materials in parts by weight: 0.05-10 parts of anionic emulsifier, 0.05-20 parts of non-ionic emulsifier, 0.5-200 parts of reaction monomer, 0.1-40 parts of functional monomer, 0.1-30 parts of modified monomer, 0.01-10 parts of buffering agent, 0.005-10 parts of initiator, 0.005-20 parts of oxidant and a proper amount of water; wherein the functional monomer comprises at least one of hydroxyethyl acrylate, hydroxypropyl acrylate, hydroxyethyl methacrylate and hydroxypropyl methacrylate. The paint thickening and water retaining agent prepared by the invention has the characteristics of small using amount, good thickening effect, excellent water retaining property and excellent shear thinning capability, and is very suitable for paint with high solid content; the paint thickening water-retaining agent prepared by the invention is environment-friendly and free from peculiar smell, residual monomers are removed through some post-treatment processes, and the residual monomers are greatly reduced, so that the prepared product is environment-friendly and free from peculiar smell, and does not contain APEO substances.
Description
Technical Field
The invention relates to the field of coatings, in particular to a coating thickening water-retaining agent and a preparation method thereof.
Background
In the field of coating, with the stricter environmental protection requirements, higher restriction requirements are put forward on organic volatile matters, APEO substances (alkylphenol polyoxyethylene ether compounds) and the like in the coating, and the auxiliary agent in the coating is required to have extremely low monomer residue and contain no APEO substances. At present, the traditional thickener products have the following defects: the monomer residue and a large amount of APEO emulsifier are used, and the water retention property and the thickening property of the product are insufficient, and the viscosity is high under high-speed shearing force, so that the coating of the coating is not facilitated. Poor water retention will mainly cause the faults of coating machine sticking roller, material conveying pipeline blockage, vehicle speed lifting failure and the like, and the paper defects of paper forming such as scratch, poor strength and the like, thereby affecting the production quality of the coated paper. Insufficient thickening performance can cause the paint viscosity to be poor, and pigment flocculation or precipitation in the paint is caused, so that the use of the paint is influenced. In the future, paper making is enlarged and high-speed towards a paper machine, the coating speed can reach 1800 plus 2000m/min, the development trends are not met, the paper machine is generally required to run fast in the coating process, the coating speed is fast, high shear is caused, under high shear, the viscosity of the coating is remarkably increased, the running of the paper machine is influenced, the quality of paper is also influenced, and coating streaks and the like are easily caused under the high shear condition. The problems mentioned above all put higher demands on the coating thickening water retention agent.
Disclosure of Invention
In view of the problems in the prior art, the invention aims to provide a paint thickening and water retaining agent.
Further, the invention aims to provide a preparation method of the paint thickening water-retaining agent.
Further, the invention also aims to provide the application of the paint thickening and water retaining agent, and the paint thickening and water retaining agent is used in paint which is used for manufacturing paper.
The invention adopts the following technical scheme:
in various embodiments, the present application provides a paint thickening and water retaining agent comprising the following raw materials in parts by weight:
wherein the functional monomer comprises at least one of hydroxyethyl acrylate, hydroxypropyl acrylate, hydroxyethyl methacrylate and hydroxypropyl methacrylate; alternatively, the functional monomer is composed of at least one of hydroxyethyl acrylate, hydroxypropyl acrylate, hydroxyethyl methacrylate, hydroxypropyl methacrylate. As an exemplary embodiment, the functional monomer is present in 0.1 to 40 parts, such as 0.5 to 20 parts, such as 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, or 40 parts by weight based on the parts by weight of the coating thickening water retention agent.
In various embodiments, the reactive monomer comprises an acrylic and an acrylate, wherein the acrylic comprises at least one of methacrylic acid, 2-ethacrylic acid; the acrylic ester substance comprises at least one of methyl acrylate, ethyl acrylate, propyl acrylate, butyl acrylate, methyl methacrylate, ethyl methacrylate, propyl methacrylate and butyl methacrylate. As an exemplary embodiment, the reactive monomer comprises 0.5 to 200 parts, such as 0.5, 0.6, 0.7, 0.8, 0.9, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, or 200 parts based on the parts by weight of the coating thickening water retention agent. Alternatively, the acrylic may comprise 1-50 parts and the acrylic may comprise 1-50 parts.
In various embodiments, the functional monomer further includes an amide-based material having two or more olefin bonds, such as N, N-methylene bisacrylamide, and preferably, the amide-based material having two or more olefin bonds (such as N, N-methylene bisacrylamide) may account for 0.1 to 10 parts, preferably 0.1 to 5 parts.
In various embodiments, the modifying monomers include long chain alkyl alcohol polyoxyethylene ether methacrylate (BEM) and tristyrylphenol polyoxyethylene ether methacrylate (SEM); alternatively, the modifying monomer consists of long-chain alkyl alcohol polyoxyethylene ether methacrylate and tristyrylphenol polyoxyethylene ether methacrylate. Wherein the long-chain alkyl alcohol polyoxyethylene ether methacrylate (BEM) is supplied by Solvay (Zhenjiang) chemical Co., Ltd, and the product type is
BEM. Triphenethylphenol polyoxyethylene ether methacrylate (SEM) was supplied by Solvay chemical Co., Ltd
SEM-25. As an exemplary embodiment, the modifying monomer comprises 0.1 to 30 parts, such as 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, based on the parts by weight of the coating thickening water retention agent,18. 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29 or 30 parts. Alternatively, BEM may comprise 0.5-10 parts, and SEM may comprise 0.5-10 parts. Preferably, the mass ratio of BEM to SEM is (0.25-3): 1, preferably (0.3 to 3): 1, the proportion of BEM to SEM is an important influence factor for thickening efficiency of the thickening water-retaining agent.
In various embodiments, the buffering agent comprises at least one of sodium bicarbonate, sodium carbonate, disodium hydrogen phosphate, sodium dihydrogen phosphate, sodium citrate, sodium acetate, potassium bicarbonate, potassium carbonate, dipotassium hydrogen phosphate, potassium dihydrogen phosphate, potassium citrate, potassium acetate; alternatively, the buffer is composed of at least one of sodium bicarbonate, sodium carbonate, disodium hydrogen phosphate, sodium dihydrogen phosphate, sodium citrate, sodium acetate, potassium bicarbonate, potassium carbonate, dipotassium hydrogen phosphate, potassium dihydrogen phosphate, potassium citrate, potassium acetate. As an exemplary embodiment, the buffer comprises 0.01 to 10 parts, such as 0.05 to 2 parts, such as 0.01, 0.02, 0.03, 0.04, 0.05, 0.06, 0.07, 0.08, 0.09, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10 parts based on the parts by weight of the coating thickening water retention agent.
In various embodiments, the initiator comprises at least one of ammonium persulfate, sodium persulfate, potassium persulfate; alternatively, the initiator is composed of at least one of ammonium persulfate, sodium persulfate, and potassium persulfate. As an exemplary embodiment, the initiator comprises 0.005 to 10 parts, such as 0.02 to 2 parts, such as 0.005, 0.006, 0.007, 0.008, 0.009, 0.01, 0.02, 0.03, 0.04, 0.05, 0.06, 0.07, 0.08, 0.09, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10 parts based on the weight parts of the coating thickening water retention agent.
In various embodiments, the oxidizing agent comprises at least one of t-butyl hydroperoxide, vitamin C, preferably, the oxidizing agent comprises t-butyl hydroperoxide and vitamin C; alternatively, the oxidizing agent is composed of at least one of t-butyl hydroperoxide and vitamin C, preferably, the oxidizing agent is composed of t-butyl hydroperoxide and vitamin C. As an exemplary embodiment, the oxidizing agent comprises 0.005 to 20 parts, such as 0.005, 0.006, 0.007, 0.008, 0.009, 0.01, 0.02, 0.03, 0.04, 0.05, 0.06, 0.07, 0.08, 0.09, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, or 20 parts based on the parts by weight of the coating thickening water-retaining agent. Alternatively, t-butyl hydroperoxide can be present in an amount of 0.01 to 5 parts and vitamin C can be present in an amount of 0.01 to 5 parts.
The term "t-butyl hydroperoxide" as used herein may also be referred to as t-butyl hydroperoxide, CAS number 75-91-2, formula C4H10O2。
In various embodiments, the anionic emulsifier comprises at least one of sodium dodecyl sulfonate, sodium dodecyl benzene sulfonate, sodium dodecyl sulfate; alternatively, the anionic emulsifier is composed of at least one of sodium dodecyl sulfate, sodium dodecyl benzene sulfonate, and sodium dodecyl sulfate. As an exemplary embodiment, the anionic emulsifier comprises 0.05 to 10 parts, preferably 0.1 to 5 parts, such as 0.05, 0.06, 0.07, 0.08, 0.09, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10 parts, based on the parts by weight of the coating thickening water retention agent.
In various embodiments, the nonionic emulsifier comprises AEO-15 or polyoxyethylene octadecanoate. Preferably, the nonionic emulsifier comprises AEO-15 or polyoxyethylene octadecanoic acid ether, and DBR-Z manufactured by Solvay company, and is an environment-friendly emulsifier. As an exemplary embodiment, the nonionic emulsifier comprises 0.05 to 20 parts, such as 0.05, 0.06, 0.07, 0.08, 0.09, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, or 20 parts, based on the parts by weight of the coating thickening water retention agent. Alternatively, the emulsifier AEO-15 can be present in an amount of 0.1 to 5 parts and the emulsifier DBR-Z can be present in an amount of 0.1 to 5 parts.
As a preferred embodiment, the amount of the water used is an appropriate amount based on the parts by weight of the coating thickening and water retaining agent, and can be added according to the needs of those skilled in the art, for example, 0 to 500 parts, such as 0, 5, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 210, 220, 230, 240, 250, 260, 270, 280, 290, 300, 310, 320, 330, 340, 350, 360, 370, 380, 390, 400, 410, 420, 430, 440, 450, 460, 470, 480, 490 or 500 parts. The water used can be deionized water, distilled water, double distilled water, purified water, and ultrapure water.
Preferably, the raw materials or components of the coating thickening water retention agent of the present application do not comprise polyvinyl alcohol.
By way of non-limiting example, in some embodiments, the present application provides a method of preparing a coating thickening water retention agent comprising the steps of:
(1) mixing water, an anionic emulsifier, a nonionic emulsifier, a buffering agent, a modified monomer, a reaction monomer and a functional monomer to obtain a pre-emulsion;
(2) then adding an initiator and an oxidant to prepare the coating thickening water-retaining agent.
Further, as a non-limiting exemplary embodiment, the present application provides a method for preparing a coating thickening water retention agent, comprising the steps of:
(1) adding a proper amount of water and part of the nonionic emulsifier into the reaction kettle, and then heating to 70-90 ℃;
(2) mixing an anionic emulsifier, the other part of a nonionic emulsifier, a buffering agent and a proper amount of water, then adding a modified monomer, stirring, adding a reaction monomer and a functional monomer, and stirring to obtain a pre-emulsion;
(3) adding part of initiator into the solution obtained in the step (1), stirring, then synchronously dropwise adding the pre-emulsion obtained in the step (2) and the other part of initiator into the solution, and reacting at 70-90 ℃;
(4) then dropwise adding an oxidant, reacting and discharging to obtain the coating thickening water-retaining agent.
By way of non-limiting example, in some embodiments, the present application provides for the use of a coating thickening water retention agent for use in a coating for the manufacture of paper.
The coating thickening water-retaining agent has the characteristics of thickening, water retention, high shear and low viscosity:
1. the coating is brought to the required viscosity to meet the loading (doctor blade, roller, spray), storage and suspension characteristics;
2. the performance of the coating, such as water retention, coating evaporation rate, coating fixation speed, coating thickness and the like, is improved;
3. improved paper quality, such as better smoothness, gloss, coating hiding, and lower coating penetration;
4. the adhesive migration is reduced, the coating strength is guaranteed, and the printing uniformity is improved;
5. economy, reduced cost (liquid, replacing expensive raw materials);
6. after the coating is used for thickening the water-retaining agent, the performances are obviously improved; through the practical test of the trial run of the white board coating paper machine, the result shows that after a thickening system is changed from CMC into the coating thickening water-retaining agent, the coating coverage performance is obviously improved, the smoothness is improved by 30-50%, the printing uniformity is obviously improved, the cost is obviously reduced, and the CMC has better thickening efficiency than CMC, so that the CMC can be used in a smaller amount under the condition of substitution.
Water retention of a coating generally refers to the ability of a coating applied to a paper surface to retain free water therein, the coating being composed of pigments, binders and various auxiliaries, the water in the coating being divided into two parts: for optimum dispersion, a portion of the water wets the dispersed pigment, dissolves the binder, and is referred to as the paint stabilizing water, and a portion is the free water required for the actual formulation of the paint, which is easily removed and escaped from the paint.
The water retention of a coating is an inherent property of the coating, and the water retention of the coating is generally expressed by the water release capacity or water retention capacity of the coating during coating, which reflects the migration movement capacity of free water in the coating to a base paper after coating.
The water retention of the coating refers to the affinity of the coating for free water, and the value is related to the performance, the number and other factors of hydrophilic groups in the coating components.
The free moisture ratio in the coating is relatively free, and the coating is easy to migrate under the influence of external factors. After contacting with the base paper, the moisture difference on the interface causes the coating water to diffuse to the base paper, and the free water molecule thermal motion is intensified and the diffusion is accelerated when drying, and the free water can be escaped from the coating as a result of the actions, but some components in the coating contain a large amount of hydrophilic groups such as hydroxyl, amino, carboxyl and the like, and the groups can generate an obstruction effect on the escaped free water, wherein the obstruction effect is mainly contributed by hydrogen bonding force and polar force. The free water molecules in the coating and the groups form water bridge combination, and although the combination is loose and changeable, the force is very large when the number is large, so that the escape of the free water in the coating is slowed down, and the water retention of the coating is improved. Therefore, the coating components contain more hydrophilic groups or polar groups, which is beneficial to improving the water retention of the coating.
Water retention of a coating refers to the ability of the coating itself to retain its free water without escaping, as opposed to water loss from the coating. The water-retaining property of the coating material is high and low, and the free water in the coating material permeates into the base paper and the adhesive migrates to the surface after coating. The coating has good water-retaining property, the water in the coating is not easy to permeate into the base paper, and meanwhile, the adhesive is not easy to migrate to the surface, thereby being beneficial to the combination between pigment particles and between the coating and the base paper.
If the water-retaining effect of the coating is poor, the defects of blockage of a pasting roller and a material conveying pipeline of the coating machine, incapability of lifting the coating machine and the like can be caused, and the production quality of the coated paper is influenced due to paper defects of scratches, poor strength and the like of the formed paper.
The water retention of the coating is directly related to the hydrophilic capacity of the components of the coating. The strong hydrophilic ability makes the coating have high water-retaining property, otherwise, the coating has low water-retaining property. The enhancement of the hydrophilic ability is related to the hydrophilicity of the hydrophilic group; and on the other hand the number of hydrophilic groups. In addition, in relation to the structure of the components, a structure which can directly contact with free water and prevent free movement of the free water is beneficial to improving the water retention of the coating.
Hydrophilic groups such as hydroxyl, amino, carboxyl and the like are favorable for improving the water retention of the coating, and the combination of the hydrophilic groups and free water can be increased by proper branched chains, net structures and molecular chain lengths, so that the water retention of the coating is also favorable for improving.
The thickening mechanism of the coating thickening water-retaining agent of the invention is as follows:
(1) volume expansion: after the thickening and water-retaining agent is neutralized by alkali, the swelling of the polymer and the stretching of the structure are caused due to the repulsion of ions. The swollen and hydrated high molecular weight polymer occupies the space of the solution, resulting in an increase in the viscosity of the solution.
(2) Winding a molecular chain: as the concentration of the polymer increases, physical entanglement between polymer molecular chains occurs, which results in high thickening efficiency.
(3) Association: the hydrophobic groups on the polymer may associate with each other, resulting in an increase in viscosity. These hydrophobic groups can also associate with binders, adjuvants and pigment particles in the coating, reducing their migration.
The purity grade of the substance purchased or used herein is chemically pure, analytically pure or guaranteed, preferably analytically pure, more preferably guaranteed, unless otherwise specified herein.
As used herein, "and/or" includes any and all combinations of one or more of the associated listed items. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
Unless defined otherwise, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
All methods described herein can be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context.
The use of any and all examples, or exemplary language (such as, "for example") provided herein, is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention unless otherwise claimed. No language in the specification should be construed as indicating any element as essential to the practice of the invention unless explicitly described as such.
The exemplary invention described herein may suitably lack any one or more of the element limitations, which are not specifically disclosed herein. Thus, the terms "comprising," "including," "containing," and the like are to be construed broadly and in a non-limiting sense. Furthermore, the terms used herein are used as terms of description and not of limitation, and there is no intention in the use of such terms to describe only some of their characteristics but, in the light of the claims, various modifications are possible within the scope of the invention. Thus, while the present invention has been particularly disclosed in terms of preferred embodiments and optional features, modification of the invention herein disclosed to embody it may be noted by those skilled in the art, and such modifications and variations are considered to be within the scope of the invention.
Compared with the prior art, the invention has the beneficial effects that:
(1) the paint thickening and water retaining agent prepared by the invention has the characteristics of small dosage and excellent thickening effect, and can achieve better thickening effect under the condition of the same addition (usually about 0.15 percent of the absolute dry (dry or non-aqueous paint) of the paint), which is far higher than that of the conventional thickening agent;
(2) the paint thickening water-retaining agent has excellent water-retaining property;
(3) the paint thickening and water retaining agent has excellent shear thinning capability and is very suitable for high solid content paint (such as paint with solid content of 60-70%);
(4) the paint thickening water-retaining agent prepared by the invention is environment-friendly and free of peculiar smell, residual monomers are removed through some post-treatment processes, and the residual monomers are greatly reduced, so that the prepared product is environment-friendly and free of peculiar smell, contains no APEO substances, and meets the food packaging requirements (the food paperboard is tested, and the result meets the European Union standard);
(5) less coating scratches: after the coating is used for thickening the water-retaining agent, the times of coating scratches on the paper surface are less than the times of using other thickeners, and because the coating thickening water-retaining agent can endow the coating with good rheological property, the occurrence of scratches is reduced in the coating process of the coating, and the smoothness and the yield of paper are improved;
(6) lower high shear viscosity: after the water-retaining agent is thickened by the paint, the high shear viscosity of the paint is lower than that of the paint prepared by other thickeners, and the paint thickened by the water-retaining agent has lower high shear viscosity, so that the paper machine can be more stable in the high-rotating-speed operation process in production, and the production efficiency of the paper machine is improved;
(7) excellent water retention: the water retention performance of the paint thickening water retention agent is better than that of other thickening agents, and the excellent water retention performance can endow the paint with excellent rheological performance, reduce the migration of the paint to the base paper after coating, and improve the glossiness, smoothness and printability of the coated paper;
(8) good thickening power: compared with other thickening agents, the coating thickening water-retaining agent can reach the thickening level required by enterprises under a lower dosage, can reduce the production cost of the enterprises, and improves the economic benefit;
(9) and (3) environmental protection: the paint thickening and water retaining agent has lower smell than other thickening agents, and avoids the problem of complaint of smell and the phenomenon of larger smell of paper surface after paper is formed in production.
Detailed Description
For better explanation of the present invention, the following specific examples are further illustrated, but the present invention is not limited to the specific examples.
Table 1: raw Material formulations (g) of examples 1 to 5
Wherein the anionic emulsifier (emulsifier K) is sodium dodecyl sulfate, sodium dodecyl benzene sulfonate or sodium dodecyl sulfate.
Example 1
A paint thickening and water retaining agent is prepared by the following steps:
1. adding 0.2g of emulsifier K (anionic emulsifier sodium dodecyl sulfate) and 0.2g of emulsifier AEO-151g into an emulsification reaction kettle, adding 50g of water, stirring and mixing uniformly, then adding 0.1g of sodium bicarbonate, mixing uniformly, then adding 2g of BEM and 1.5g of SEM, mixing uniformly, adding 0.5g of N, N-methylene bisacrylamide, mixing uniformly, then adding 24g of methacrylic acid, 5g of methyl methacrylate, 29g of ethyl acrylate and 3g of hydroxyethyl methacrylate, stirring and emulsifying to obtain a pre-emulsion;
2. weighing 0.02g of initiator (sodium persulfate), adding 5g of water, and stirring to completely dissolve;
3. adding 60g of water into a reaction kettle, then adding 0.5g of emulsifier DBR-Z, starting stirring, and heating to 82 ℃;
4. adding the initiator (sodium persulfate) aqueous solution obtained in the step (2) into a reaction kettle, stirring for 2min, then adding 3g of pre-emulsion, stirring for reaction, wherein the stirring speed is controlled at 180-200r/min, and the reaction time is 30min, so as to obtain seed emulsion;
5. weighing 0.1g of initiator (sodium persulfate), adding 20g of water, and completely dissolving;
6. dripping the residual pre-emulsion in the step 1 and the initiator in the step 5 into a reaction kettle in parallel, wherein the dripping time is 3 hours, and the temperature is kept at 82 ℃;
7. after the dropwise adding is finished, the temperature is raised to 85 ℃, the heat preservation is carried out, the rotating speed is kept at about 180r/min during the heat preservation, and the heat preservation time is 2 hours;
8. after the heat preservation is finished, cooling to 65 ℃, dropwise adding a tert-butyl hydroperoxide solution (the solution is prepared by dissolving 0.1g of tert-butyl hydroperoxide with 5g of water), wherein the dropwise adding time is 10min, after the dropwise adding of the tert-butyl hydroperoxide is finished, dropwise adding a vitamin C solution (the vitamin C solution is prepared by dissolving 0.08g of vitamin C with 5g of water), wherein the dropwise adding time is 10min, and after the dropwise adding is finished, preserving the heat for 0.5 h;
9. and after the heat preservation is finished, cooling to about 30 ℃, and discharging to obtain the coating thickening water-retaining agent.
Example 2
A paint thickening and water retaining agent is prepared by the following steps:
1. adding 0.3g of emulsifier K (anionic emulsifier sodium dodecyl benzene sulfonate), 151.1 g of emulsifier AEO, 50g of water into an emulsification reaction kettle, uniformly stirring and mixing, then adding 0.08g of sodium bicarbonate, uniformly mixing, then adding 3g of BEM and 2g of SEM, uniformly mixing, adding 0.3g of N, N-methylene bisacrylamide, uniformly mixing, then adding 28g of methacrylic acid, 6.7g of butyl acrylate, 20g of ethyl acrylate and 5g of hydroxyethyl methacrylate, and stirring and emulsifying to obtain a pre-emulsion;
2. weighing 0.02g of initiator (ammonium persulfate), adding 5g of water, and stirring to completely dissolve;
3. adding 60g of water into a reaction kettle, then adding 0.45g of emulsifier DBR-Z, starting stirring, and heating to 85 ℃;
4. adding the initiator (ammonium persulfate) obtained in the step (2) into a reaction kettle, stirring for 2min, then adding 5g of pre-emulsion, stirring for reaction, wherein the stirring speed is controlled at 180-200r/min, and the reaction time is 30min, so as to obtain seed emulsion;
5. weighing 0.1g of initiator (ammonium persulfate), adding 20g of water, and completely dissolving;
6. dripping the residual pre-emulsion in the step 1 and the initiator (ammonium persulfate) in the step 5 into a reaction kettle in parallel, wherein the dripping time is 3h, and the temperature is kept at 85 ℃;
7. after the dropwise adding is finished, the temperature is raised to 87 ℃, the heat preservation is carried out, the rotating speed is kept at about 180r/min during the heat preservation, and the heat preservation time is 1.5 h;
8. after the heat preservation is finished, cooling to 65 ℃, dropwise adding a tert-butyl hydroperoxide solution (the solution is prepared by dissolving 0.09g of tert-butyl hydroperoxide with 5g of water), wherein the dropwise adding time is 10min, after the dropwise adding of the tert-butyl hydroperoxide is finished, dropwise adding a vitamin C solution (the vitamin C solution is prepared by dissolving 0.07g of vitamin C with 5g of water), wherein the dropwise adding time is 10min, and after the dropwise adding is finished, preserving the heat for 0.5 h;
9. and after the heat preservation is finished, cooling to about 30 ℃, and discharging to obtain the coating thickening water-retaining agent.
Example 3
A paint thickening and water retaining agent is prepared by the following steps:
1. adding 0.4g of emulsifier K (anionic emulsifier sodium dodecyl benzene sulfonate) and 0.4g of emulsifier AEO-151.05 g into an emulsification reaction kettle, adding 50g of water, stirring and mixing uniformly, then adding 0.05g of sodium bicarbonate, mixing uniformly, then adding BEM1g and SEM3g, mixing uniformly, adding 0.5g of N, N-methylene bisacrylamide, mixing uniformly, then adding 25g of methacrylic acid, 5g of methyl methacrylate, 27g of ethyl acrylate and 3.5g of hydroxyethyl acrylate, stirring and emulsifying to obtain a pre-emulsion;
2. weighing 0.02g of initiator (ammonium persulfate), adding 5g of water, and stirring to completely dissolve;
3. adding 60g of water into a reaction kettle, then adding 0.4g of emulsifier DBR-Z, starting stirring, and heating to 85 ℃;
4. adding the initiator (ammonium persulfate) obtained in the step (2) into a reaction kettle, stirring for 2min, then adding 5g of pre-emulsion, stirring for reaction, wherein the stirring speed is controlled at 180-200r/min, and the reaction time is 30min, so as to obtain seed emulsion;
5. weighing 0.1g of initiator (ammonium persulfate), adding 20g of water, and completely dissolving;
6. dripping the residual pre-emulsion in the step 1 and the initiator (ammonium persulfate) in the step 5 into a reaction kettle in parallel, wherein the dripping time is 3h, and the temperature is kept at 85 ℃;
7. after the dropwise adding is finished, the temperature is raised to 87 ℃, the heat preservation is carried out, the rotating speed is kept at about 180r/min during the heat preservation, and the heat preservation time is 2 hours;
8. after the heat preservation is finished, cooling to 65 ℃, dropwise adding a tert-butyl hydroperoxide solution (the solution is prepared by dissolving 0.08g of tert-butyl hydroperoxide with 5g of water), wherein the dropwise adding time is 10min, dropwise adding a vitamin C solution (the vitamin C solution is prepared by dissolving 0.08g of vitamin C with 5g of water) after the dropwise adding of the tert-butyl hydroperoxide is finished, the dropwise adding time is 10min, and after the dropwise adding is finished, preserving the heat for 0.5 h;
9. and after the heat preservation is finished, cooling to about 30 ℃, and discharging to obtain the coating thickening water-retaining agent.
Example 4
A paint thickening and water retaining agent is prepared by the following steps:
1. adding 0.3g of emulsifier K (anionic emulsifier sodium dodecyl benzene sulfonate), 151.2 g of emulsifier AEO, 50g of water into an emulsification reaction kettle, uniformly stirring and mixing, then adding 0.06g of sodium bicarbonate, uniformly mixing, then adding 2.5g of BEM2 and 2.5g of SEM2, uniformly mixing, adding 0.8g of N, N-methylene bisacrylamide, uniformly mixing, then adding 24.5g of methacrylic acid, 10g of butyl acrylate, 20g of ethyl acrylate, 2.7g of hydroxyethyl methacrylate and 2g of hydroxypropyl acrylate, and stirring and emulsifying to obtain a pre-emulsion;
2. weighing 0.02g of initiator (ammonium persulfate), adding 5g of water, and stirring to completely dissolve;
3. adding 60g of water into a reaction kettle, then adding 0.45g of emulsifier DBR-Z, starting stirring, and heating to 80 ℃;
4. adding the initiator (ammonium persulfate) obtained in the step (2) into a reaction kettle, stirring for 2min, then adding 5g of pre-emulsion, stirring for reaction, wherein the stirring speed is controlled at 180-200r/min, and the reaction time is 30min, so as to obtain seed emulsion;
5. weighing 0.1g of initiator (ammonium persulfate), adding 20g of water, and completely dissolving;
6. dripping the residual pre-emulsion in the step 1 and the initiator (ammonium persulfate) in the step 5 into a reaction kettle in parallel, wherein the dripping time is 3h, and the temperature is kept at 80 ℃;
7. after the dropwise adding is finished, the temperature is raised to 83 ℃, heat preservation is carried out, the rotating speed is kept at about 180r/min during heat preservation, and the heat preservation time is 2 hours;
8. after the heat preservation is finished, cooling to 65 ℃, dropwise adding a tert-butyl hydroperoxide solution (the solution is prepared by dissolving 0.1g of tert-butyl hydroperoxide with 5g of water), wherein the dropwise adding time is 10min, after the dropwise adding of the tert-butyl hydroperoxide is finished, dropwise adding a vitamin C solution (the vitamin C solution is prepared by dissolving 0.09g of vitamin C with 5g of water), wherein the dropwise adding time is 10min, and after the dropwise adding is finished, preserving the heat for 0.5 h;
9. and after the heat preservation is finished, cooling to about 30 ℃, and discharging to obtain the coating thickening water-retaining agent.
Example 5
A paint thickening and water retaining agent is prepared by the following steps:
1. adding 0.5g of emulsifier K (anionic emulsifier sodium dodecyl sulfate), 150.8 g of emulsifier AEO, 50g of water into an emulsification reaction kettle, uniformly stirring and mixing, then adding 0.05g of sodium bicarbonate, uniformly mixing, adding 4g of BEM and 2g of SEM, uniformly mixing, adding 0.5g of N, N-methylene bisacrylamide, uniformly mixing, adding 23.8g of methacrylic acid, 5.7g of butyl acrylate, 25g of ethyl acrylate, 3g of hydroxyethyl methacrylate and 1g of hydroxypropyl acrylate, and stirring and emulsifying to obtain a pre-emulsion;
2. weighing 0.02g of initiator (ammonium persulfate), adding 5g of water, and stirring to completely dissolve;
3. adding 60g of water into a reaction kettle, then adding 0.6g of emulsifier DBR-Z, starting stirring, and heating to 85 ℃;
4. adding the initiator (ammonium persulfate) obtained in the step (2) into a reaction kettle, stirring for 2min, then adding 5g of pre-emulsion, stirring for reaction, wherein the stirring speed is controlled at 180-200r/min, and the reaction time is 30min, so as to obtain seed emulsion;
5. weighing 0.1g of initiator (ammonium persulfate), adding 20g of water, and completely dissolving;
6. dripping the residual pre-emulsion in the step 1 and the initiator (ammonium persulfate) in the step 5 into a reaction kettle in parallel, wherein the dripping time is 3h, and the temperature is kept at 85 ℃;
7. after the dropwise adding is finished, the temperature is raised to 87 ℃, the heat preservation is carried out, the rotating speed is kept at about 180r/min during the heat preservation, and the heat preservation time is 1.5 h;
8. after the heat preservation is finished, cooling to 65 ℃, dropwise adding a tert-butyl hydroperoxide solution (the solution is prepared by dissolving 0.09g of tert-butyl hydroperoxide with 5g of water), wherein the dropwise adding time is 10min, after the dropwise adding of the tert-butyl hydroperoxide is finished, dropwise adding a vitamin C solution (the vitamin C solution is prepared by dissolving 0.09g of vitamin C with 5g of water), wherein the dropwise adding time is 10min, and after the dropwise adding is finished, preserving the heat for 0.5 h;
9. and after the heat preservation is finished, cooling to about 30 ℃, and discharging to obtain the coating thickening water-retaining agent.
Table 2: raw Material formulations (g) of comparative examples 1 to 6
Unfilled content values indicate no addition. Comparative examples 1 to 6 are compared with example 2, the starting materials of comparative examples 1 to 6 differing from the starting material of example 2 in the already indicated differences and being identical where not indicated. Of these, the feed for comparative example 1 was the same as example 2, except that comparative example 1 contained no BEM (i.e., 0g BEM). The feed for comparative example 2 was the same as example 2 except that comparative example 2 contained no SEM (i.e. SEM was 0 g). The feed for comparative example 3 was the same as example 2, except that the BEM for comparative example 3: the SEM mass ratio is 5: 1. the feed for comparative example 4 was the same as example 2, except that the BEM for comparative example 4: SEM mass ratio is 1: 5. the starting material of comparative example 5 was the same as in example 2, except that comparative example 5 contained no anionic emulsifier (emulsifier K) and the amount of emulsifier AEO-15 was increased. The raw material of comparative example 6 was the same as that of example 2 except that comparative example 6 did not contain the emulsifier DBR-Z and the amount of emulsifier AEO-15 was increased.
Comparative examples 1 to 5 enable the synthesis of samples, but comparative example 5 does not emulsify due to the emulsifier, and comparative example 6 does emulsify, but the synthesized thickened water-retaining agent sample contains a large amount of crusts and slag, has a low product yield, and is easily clogged at the discharge port.
And (3) performance detection:
the coating formula comprises: the solid content of the coating is about 68 percent, and the overall pH value of the coating is controlled between 8.8 and 9.3.
Table 3: the thickening and water-retaining agents of examples 1 to 5 and comparative examples 1 to 6 were prepared into a paint formulation (g)
Table 4: results of Performance test of examples 1 to 5
Table 5: results of Performance test of comparative examples 1 to 6
Wherein CMC is sodium carboxymethyl cellulose.
The detection device comprises:
distributed viscosity: brookfield DV2T Viscometer, CPs @100 rpm;
water retention value: AA GWR, 5 μm, 0.5bar, 90 s;
high shear viscosity: ACAV-2, cps @ 106S-1, high shear viscosity test was performed at 6000 r/min;
solid content of the coating: CEM Smart 5,%; pH value: sartorius PB-10.
As can be seen from the detection results: 1. the thickening water-retaining agent has extremely excellent thickening efficiency, and can achieve extremely high thickening effect under a small using amount; 2. meanwhile, the water-retaining agent has excellent water-retaining property and high shear rheological effect.
Table 6: results of testing for improvement in physical Properties of paper
The above description is only exemplary of the present invention and is not intended to limit the scope of the present invention, which is defined by the claims appended hereto, as well as the appended claims.
Claims (10)
1. The paint thickening and water retaining agent is characterized by comprising the following raw materials in parts by weight:
wherein the functional monomer comprises at least one of hydroxyethyl acrylate, hydroxypropyl acrylate, hydroxyethyl methacrylate and hydroxypropyl methacrylate.
2. The paint thickening and water retaining agent of claim 1, wherein the reactive monomer comprises an acrylic substance and an acrylate substance, wherein the acrylic substance comprises at least one of methacrylic acid and 2-ethyl acrylic acid; the acrylic ester substance comprises at least one of methyl acrylate, ethyl acrylate, propyl acrylate, butyl acrylate, methyl methacrylate, ethyl methacrylate, propyl methacrylate and butyl methacrylate.
3. The paint thickening and water retaining agent of claim 1, wherein the functional monomer further comprises an amide containing two or more olefin bonds.
4. The coating thickening and water retaining agent of claim 1, wherein the modifying monomer comprises long chain alkyl alcohol polyoxyethylene ether methacrylate and trityl phenol polyoxyethylene ether methacrylate.
5. The paint thickening and water retaining agent of claim 1, wherein the buffer comprises at least one of sodium bicarbonate, sodium carbonate, disodium hydrogen phosphate, sodium dihydrogen phosphate, sodium citrate, sodium acetate, potassium bicarbonate, potassium carbonate, dipotassium hydrogen phosphate, potassium dihydrogen phosphate, potassium citrate, and potassium acetate.
6. The paint thickening and water retaining agent of claim 1, wherein the initiator comprises at least one of ammonium persulfate, sodium persulfate and potassium persulfate.
7. The paint thickening and water retaining agent of claim 1, wherein the oxidant comprises at least one of tert-butyl hydroperoxide and vitamin C.
8. The paint thickening and water retaining agent of claim 1, wherein the anionic emulsifier comprises at least one of sodium dodecyl sulfate, sodium dodecyl benzene sulfonate and sodium dodecyl sulfate; the nonionic emulsifier comprises polyoxyethylene octadecanoate.
9. The method for preparing the paint thickening and water retaining agent of any one of claims 1 to 8, characterized by comprising the following steps:
(1) mixing water, an anionic emulsifier, a nonionic emulsifier, a buffering agent, a modified monomer, a reaction monomer and a functional monomer to obtain a pre-emulsion;
(2) then adding an initiator and an oxidant to prepare the coating thickening water-retaining agent.
10. Use of the coating thickening water retention agent according to any of claims 1 to 8, characterized in that the coating thickening water retention agent is used in a coating for the manufacture of paper.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102399351A (en) * | 2010-11-19 | 2012-04-04 | 苏州博纳化学科技有限公司 | Preparation method of emulsion-type thickening agent |
| CN103788283A (en) * | 2014-01-17 | 2014-05-14 | 广州市东雄化工有限公司 | Hydrophobic modified associative thickener and preparation method thereof |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102399351A (en) * | 2010-11-19 | 2012-04-04 | 苏州博纳化学科技有限公司 | Preparation method of emulsion-type thickening agent |
| CN103788283A (en) * | 2014-01-17 | 2014-05-14 | 广州市东雄化工有限公司 | Hydrophobic modified associative thickener and preparation method thereof |
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Application publication date: 20210713 |