CN1557892A - Water bicomponent polyurethane paints and process for preparing the same - Google Patents
Water bicomponent polyurethane paints and process for preparing the same Download PDFInfo
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- CN1557892A CN1557892A CNA2004100007628A CN200410000762A CN1557892A CN 1557892 A CN1557892 A CN 1557892A CN A2004100007628 A CNA2004100007628 A CN A2004100007628A CN 200410000762 A CN200410000762 A CN 200410000762A CN 1557892 A CN1557892 A CN 1557892A
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Abstract
The water-base double-component polyurethane paint consists of emulsion containing acrolactate, defoaming agent, wetting agent, water and hydrophilic modifying polyisocyanate and is prepared through mixing via stirring. The emulsion containing acrolactate is prepared with acrylic ester monomer mixture, emulsifier, initiator, water, buffering agent and proper amount of neutralizing agent and through heat polymerization, neutralization, regulating pH value to 7-8.5 and sieving. The paint has the advantages of easy mixing, drying at normal temperature, no toxicity, no smell, no environmental pollution, high hardness, and good waterproof property.
Description
Technical field
The present invention relates to a kind of aqueous polyurethane coating with bi component and preparation method thereof.
Background technology
Polyurethane paint has the performance of many excellences, as strong adhesion, wear resistance is good, elasticity is adjustable, can be made into and arrive utmost point softish coating extremely firmly, have performances such as excellent acid, alkaline-resisting, high-low temperature resistant, therefore obtained using widely at aspects such as national defence, building, chemical industry, vehicle, woodenware, aircrafts.Traditional polyurethane paint contains to human body and the deleterious volatile organic compounds of environment, as toluene, dimethylbenzene etc.Along with the enhancing of people's Environmental awareness and the foundation of environmental regulation, its application more and more is restricted.
Aqueous polyurethane coating, water have replaced poisonous and hazardous organic solvent, have nontoxic, fire-retardant, free from environmental pollution, save advantage such as the energy, be subjected to paying close attention to widely, progressively replacing traditional solvent reducible coatings, represented the direction of coating development.Aqueous polyurethane coating can be divided into single component and two-component coating by its packaged form as the solvent borne polyurethane coating.Mono-component aqueous polyurethane coating easy construction, but still can not reach the performance of solvent borne polyurethane coating at aspects such as many performances such as water tolerance, solvent resistance, chemical-resistant, wear resistance, hardness; And waterborne two-component polyurethane coating has improved the cross-linking density of coating greatly by using polyisocyanates as the linking agent crosslinking curing, and performance can compare favourably with the solvent borne polyurethane coating.
Aqueous polyurethane coating has carried out number of research projects both at home and abroad, but has mainly concentrated on mono-component aqueous polyurethane coating, is applied in leather and fabric industry; Succeeded in developing the hydrophilic polyisocyanate solidifying agent afterwards, aqueous polyurethane coating with bi component just begins to emerge in large numbers.Hydroxy-containing component as aqueous polyurethane coating with bi component, patent CA2107957, CN1278539, EP792898, EP1065228, US5387642, US5830938, WO97-35898 etc. have applied for the hydroxyl polyurethane dispersions, patent CN1162964, CN1230971, EP959115, WO99-58589, US6225398, WO99-51658, WO01-04172 etc. have applied for the hydroxy acryl acid dispersion, patent EP562282, EP742239 etc. have applied for the hydroxy acryl acid polyurethane dispersions, these dispersions all exist hardness of paint film low, water resistance is poor, with shortcomings such as hydrophilically modified polyisocyanates compatibility differences, be difficult to reach the performance of solvent based coating.
Summary of the invention
The objective of the invention is to improve the shortcoming of prior art, and provide a kind of hydroxy acryl acid emulsion and its to cooperate the aqueous polyurethane coating with bi component that makes its performance reach solvent borne polyurethane coating index with hydrophilically modified polyisocyanates.
Another object of the present invention is to and a kind of preparation method of aqueous polyurethane coating with bi component is provided.
For achieving the above object, the present invention takes following design: described hydroxy acryl acid ester emulsion is made up of following materials based on weight:
Acrylate monomer blend 20～50 emulsifying agents 0.2～2
Initiator 0.2～0.5 water 49～79
Buffer reagent 0.1～0.3 neutralizing agent is an amount of
Described acrylate monomer blend, its solid acid number scope is at 5～50mgKOH/g, and solid hydroxyl value scope is at 50～250mgKOH/g; Described an amount of neutralizing agent, its be in right amount make the preparation emulsion the pH value be 7～8.5.Described acrylate monomer blend can with hydroxy acryl acid ester monomer and not the acrylate monomer copolymerization of hydroxyl make.Described hydroxy acryl acid ester monomer comprises (methyl) Hydroxyethyl acrylate, (methyl) Propylene glycol monoacrylate; The acrylate monomer of described not hydroxyl comprises vinylbenzene, (methyl) methyl acrylate, (methyl) ethyl propenoate, (methyl) propyl acrylate, (methyl) butyl acrylate, (methyl) 2-EHA and other (methyl) higher hydrocarbyl acrylate.The acrylate monomer of described not hydroxyl is (methyl) vinylformic acid also.Described emulsifying agent is the mixing of anionic emulsifier and nonionic emulsifying agent.The mixed weight ratio of described anionic emulsifier and nonionic emulsifying agent is 2: 8～8: 2.Described initiator is water miscible, as Potassium Persulphate, ammonium persulphate etc.Described water is distilled water or deionized water.Described buffer reagent is a sodium bicarbonate.Described neutralizing agent is methyldiethanolamine, dimethylethanolamine, triethylamine, ammoniacal liquor etc.
Described hydroxy acryl acid ester emulsion preparation step is as follows: earlier water, emulsifying agent, buffer reagent sodium bicarbonate etc. are mixed the back and add in the reactor, be warmed up to 65～85 ℃, drip initiator, the acrylate monomer blend that is mixed with the aqueous solution respectively, after in 1～3 hour, dripping off, kept 0.5～1.5 hour, make the complete polymerization of acrylate monomer, be cooled to 40～60 ℃, add neutralizing agent, adjust pH, excessively discharging behind at least 80 eye mesh screens 7～8.5.
Aqueous polyurethane coating with bi component of the present invention is made up of following materials based on weight:
Hydroxy-containing component: hydroxy acryl acid ester emulsion 100 defoamers 0.5～2
Wetting agent 0.5～2, water 0～30
Curing agent component: hydrophilically modified polyisocyanates 5～50
The aqueous polyurethane coating with bi component preparation process is as follows: various raw materials in the hydroxy-containing component are mixed, add curing agent component, by hand or mechanical stirring even, be the inventive method product.
During use, can adopt conventional coating method, this coating is coated on the ground that needs, as timber, metal, plastics or paper etc. as brushing, spraying, roller coat, showering, dip-coating etc.This coating can be used as priming paint, in be coated with and finish paint etc.
Advantage of the present invention is: this coating have mix easily, normal temperature self-drying, characteristics nontoxic, tasteless, free from environmental pollution, hardness height, water-tolerant.
Embodiment
Embodiment 1:
Hydroxy acryl acid ester emulsion is made up of following materials based on weight:
Acrylate monomer blend 50 emulsifying agents 2
Initiator 0.5 water 79
Sodium bicarbonate 0.3 neutralizing agent is an amount of
Hydroxy acryl acid ester emulsion preparation step is as follows:
In container, add distilled water, compound emulsifying agent MS-1/OP-10 (1: 1) and buffer reagent sodium bicarbonate, be warming up to 85 ℃, drip the aqueous solution (10%) and acrylate monomer blend (the monomer weight ratio: Rocryl 410 23 of initiator ammonium persulfate simultaneously, methacrylic acid 3, butyl acrylate 40, methyl methacrylate 34).After in 1 hour, dripping off, kept 1.5 hours, be cooled to 40 ℃, add neutralizing agent ammoniacal liquor, adjust the pH value, excessively discharging behind 80 eye mesh screens 8.5.
Aqueous polyurethane coating with bi component is made up of following materials based on weight:
Hydroxy-containing component: hydroxy acryl acid ester emulsion 100 defoamers 0.5
Wetting agent 1, water 30
Curing agent component: hydrophilically modified polyisocyanates 30
The aqueous polyurethane coating with bi component preparation process is as follows: in above-mentioned hydroxy acryl acid emulsion, add defoamer Byk028, wetting agent Byk346, stir evenly the back and add hydrophilic polyisocyanate WT2102, stir, add entry, stir evenly, be product of the present invention.
Embodiment 2:
Hydroxy acryl acid ester emulsion is made up of following materials based on weight:
Acrylate monomer blend 20 emulsifying agents 0.2
Initiator 0.2 water 49
Sodium bicarbonate 0.1 neutralizing agent is an amount of
Hydroxy acryl acid ester emulsion preparation step is as follows:
In container, add distilled water, compound emulsifying agent sodium lauryl sulphate/OP-10 (6: 4) and buffer reagent sodium bicarbonate, be warming up to 65 ℃, drip the aqueous solution (10%) and acrylate monomer blend (the monomer weight ratio: hydroxyethyl methylacrylate 20 of initiator ammonium persulfate simultaneously, methacrylic acid 3, butyl acrylate 40, methyl methacrylate 37).After in 2 hours, dripping off, kept 1 hour, be cooled to 50 ℃, add the neutralizing agent methyldiethanolamine, adjust the pH value, excessively discharging behind 100 eye mesh screens 7.
Aqueous polyurethane coating with bi component is made up of following materials based on weight:
Hydroxy-containing component: hydroxy acryl acid ester emulsion 100 defoamers 2
Wetting agent 2, water 10
Curing agent component: hydrophilically modified polyisocyanates 50
The aqueous polyurethane coating with bi component preparation process is as follows: in above-mentioned hydroxy acryl acid emulsion, add defoamer Byk028, wetting agent Byk346, stir evenly the back and add hydrophilic polyisocyanate WT2102, stir, add entry, stir evenly, be product of the present invention.
Embodiment 3:
Hydroxy acryl acid ester emulsion is made up of following materials based on weight:
Acrylate monomer blend 30 emulsifying agents 1
Initiator 0.3 water 60
Sodium bicarbonate 0.2 neutralizing agent is an amount of
Hydroxy acryl acid ester emulsion preparation step is as follows:
In container, add distilled water, compound emulsifying agent sodium lauryl sulphate/OP-10 (6: 4) and buffer reagent sodium bicarbonate, be warming up to 75 ℃, drip the aqueous solution (10%) and acrylate monomer blend (the monomer weight ratio: hydroxyethyl methylacrylate 20 of initiator potassium persulfate simultaneously, methacrylic acid 3, propyl acrylate 40, methyl methacrylate 37).After in 3 hours, dripping off, kept 0.5 hour, be cooled to 60 ℃, add the neutralizing agent triethylamine, adjust the pH value, excessively discharging behind 100 eye mesh screens 8.
Aqueous polyurethane coating with bi component is made up of following materials based on weight:
Hydroxy-containing component: hydroxy acryl acid ester emulsion 100 defoamers 1
Wetting agent 0.5 water 0
Curing agent component: hydrophilically modified polyisocyanates 5
The aqueous polyurethane coating with bi component preparation process is as follows: in above-mentioned hydroxy acryl acid emulsion, add defoamer Byk028, wetting agent Byk346, stir evenly the back and add hydrophilic polyisocyanate WT2102, stir, add entry, stir evenly, be product of the present invention.
Press CNS and detect performance, the paint film property detected result is as follows:
Surface drying: 1 hour
Do solid work: 5 hours
Gloss (60 °): 90
Pencil hardness: 2H
Snappiness: 2mm passes through
Sticking power (cross-hatching): 0
Shock strength: 50Kg.cm
Water-fast: as to pass through in 48 hours
Chemical-resistant (spot corrosion):
10%H
2SO
4By
10%HCl passes through
10%CH
3COOH passes through
Ethanol: by
Dimethylbenzene: by
Methylethylketone: by
Claims (11)
1, a kind of aqueous polyurethane coating with bi component, it is characterized in that: it is made up of following materials based on weight:
Hydroxy-containing component: hydroxy acryl acid ester emulsion 100 defoamers 0.5～2
Wetting agent 0.5～2, water 0～30
Curing agent component: hydrophilically modified polyisocyanates 5～50
Described hydroxy acryl acid ester emulsion is made up of following materials based on weight:
Acrylate monomer blend 20～50 emulsifying agents 0.2～2
Initiator 0.2～0.5 water 49～79
Buffer reagent 0.1～0.3 neutralizing agent is an amount of
2, a kind of aqueous polyurethane coating with bi component according to claim 1 is characterized in that: described hydroxy acryl acid ester monomer comprises (methyl) Hydroxyethyl acrylate, (methyl) Propylene glycol monoacrylate.
3, a kind of aqueous polyurethane coating with bi component according to claim 1, it is characterized in that: the acrylate monomer of described not hydroxyl comprises vinylbenzene, (methyl) methyl acrylate, (methyl) ethyl propenoate, (methyl) propyl acrylate, (methyl) butyl acrylate, (methyl) 2-EHA and other (methyl) higher hydrocarbyl acrylate.
4, a kind of aqueous polyurethane coating with bi component according to claim 1 is characterized in that: the acrylate monomer of described not hydroxyl is (methyl) vinylformic acid.
5, a kind of aqueous polyurethane coating with bi component according to claim 1, it is characterized in that: described emulsifying agent is the mixing of anionic emulsifier and nonionic emulsifying agent, and the mixed weight ratio of described anionic emulsifier and nonionic emulsifying agent is 2: 8～8: 2.
6, a kind of aqueous polyurethane coating with bi component according to claim 1 is characterized in that: described initiator is water miscible Potassium Persulphate, ammonium persulphate.
7, a kind of aqueous polyurethane coating with bi component according to claim 1 is characterized in that: described water is distilled water or deionized water.
8, a kind of aqueous polyurethane coating with bi component according to claim 1 is characterized in that: the solid acid number scope of described acrylate monomer blend is at 5～50mgKOH/g, and solid hydroxyl value scope is at 50～250mgKOH/g;
9, a kind of aqueous polyurethane coating with bi component according to claim 1 is characterized in that: described neutralizing agent is methyldiethanolamine, dimethylethanolamine, triethylamine, ammoniacal liquor.
10, a kind of preparation method of aqueous polyurethane coating with bi component is characterized in that: the hydroxy acryl acid ester emulsion raw material of selecting following portions by weight for use:
Acrylate monomer blend 20～50 emulsifying agents 0.2～2
Initiator 0.2～0.5 water 49～79
Sodium bicarbonate 0.1～0.3 neutralizing agent is an amount of
Preparation hydroxy acryl acid ester emulsion, step is as follows: water, emulsifying agent, sodium bicarbonate are mixed the back add in the reactor, be warmed up to 65～85 ℃, drip initiator, the acrylate monomer blend that is mixed with the aqueous solution respectively, after in 1～3 hour, dripping off, kept 0.5～1.5 hour, make the complete polymerization of acrylate monomer, be cooled to 40～60 ℃, add neutralizing agent, adjust pH 7～8.5, excessively discharging behind at least 80 eye mesh screens;
Select the aqueous polyurethane coating with bi component raw material of following portions by weight for use:
Hydroxy-containing component: hydroxy acryl acid ester emulsion 100 defoamers 0.5～2
Wetting agent 0.5～2, water 0～30
Curing agent component: hydrophilically modified polyisocyanates 5～50
Preparation aqueous polyurethane coating with bi component step is as follows: various raw materials in the hydroxy-containing component are mixed, add curing agent component, by hand or mechanical stirring even.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100007628A CN1557892A (en) | 2004-01-18 | 2004-01-18 | Water bicomponent polyurethane paints and process for preparing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100007628A CN1557892A (en) | 2004-01-18 | 2004-01-18 | Water bicomponent polyurethane paints and process for preparing the same |
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| CNA2004100007628A Pending CN1557892A (en) | 2004-01-18 | 2004-01-18 | Water bicomponent polyurethane paints and process for preparing the same |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101942269A (en) * | 2010-09-30 | 2011-01-12 | 江苏大象东亚制漆有限公司 | Fast-drying bi-component acrylic waterborne wood lacquer |
| CN102277078A (en) * | 2011-07-26 | 2011-12-14 | 东来涂料技术（上海）有限公司 | Practical quick-drying varnish and preparation method thereof |
| CN103525231A (en) * | 2012-07-04 | 2014-01-22 | 长春市三化实业有限责任公司 | Room temperature cured water-based finishing paint for automobiles |
| CN104861844A (en) * | 2015-05-07 | 2015-08-26 | 姜捷 | Waterproof anticorrosion two-component water-borne polyurethane coating and preparation method thereof |
| CN104893527A (en) * | 2015-06-09 | 2015-09-09 | 浩力森涂料（上海）有限公司 | Aqueous polyurethane coating with increased limiting film thickness and preparation method of aqueous polyurethane coating |
| CN105505167A (en) * | 2015-12-25 | 2016-04-20 | 北京展辰新材料有限公司 | Waterborne bi-component bright white finish and application thereof |
| CN107142004A (en) * | 2017-04-18 | 2017-09-08 | 河北晨阳工贸集团有限公司 | A kind of aqueous industrial guardrail paint |
| CN108250930A (en) * | 2018-01-30 | 2018-07-06 | 河北晨阳工贸集团有限公司 | A kind of agricultural machinery environment protecting water-based paint and preparation method |
| CN110964152A (en) * | 2019-11-13 | 2020-04-07 | 广州化工研究设计院有限公司 | Quick-drying core-shell structure hydroxyl acrylic emulsion and preparation method and application thereof |
| CN111303744A (en) * | 2020-03-17 | 2020-06-19 | 华南师范大学 | Aqueous polyurethane coating containing phytic acid modified MXene and preparation method thereof |
| CN112585226A (en) * | 2018-09-21 | 2021-03-30 | 陶氏环球技术有限责任公司 | Two-component polyurethane composition |
| CN112662220A (en) * | 2020-12-17 | 2021-04-16 | 桂林理工大学 | Corrosion-resistant antibacterial antistatic coating and preparation method thereof |
| WO2021109106A1 (en) * | 2019-12-06 | 2021-06-10 | Dow Global Technologies Llc | Two-component polyurethane composition |
| CN113234388A (en) * | 2021-06-02 | 2021-08-10 | 广州翔铭环保新材料有限公司 | Water-based PU gloss oil and preparation method thereof |
| CN113831813A (en) * | 2021-10-19 | 2021-12-24 | 海南必凯水性新材料有限公司 | Water-based paint for sun-shading umbrella used in sunny days and rainy days, preparation method of water-based paint and sun-shading umbrella |
| CN113943525A (en) * | 2020-07-15 | 2022-01-18 | Ｋｃｃ公司 | Water-soluble coating composition for finishing paint |
-
2004
- 2004-01-18 CN CNA2004100007628A patent/CN1557892A/en active Pending
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101942269B (en) * | 2010-09-30 | 2012-10-17 | 江苏大象东亚制漆有限公司 | Fast-drying bi-component acrylic waterborne wood lacquer |
| CN101942269A (en) * | 2010-09-30 | 2011-01-12 | 江苏大象东亚制漆有限公司 | Fast-drying bi-component acrylic waterborne wood lacquer |
| CN102277078A (en) * | 2011-07-26 | 2011-12-14 | 东来涂料技术（上海）有限公司 | Practical quick-drying varnish and preparation method thereof |
| CN103525231A (en) * | 2012-07-04 | 2014-01-22 | 长春市三化实业有限责任公司 | Room temperature cured water-based finishing paint for automobiles |
| CN103525231B (en) * | 2012-07-04 | 2016-12-21 | 长春市三化实业有限责任公司 | Cold curing automobile waterborne clear finish |
| CN104861844A (en) * | 2015-05-07 | 2015-08-26 | 姜捷 | Waterproof anticorrosion two-component water-borne polyurethane coating and preparation method thereof |
| CN104893527A (en) * | 2015-06-09 | 2015-09-09 | 浩力森涂料（上海）有限公司 | Aqueous polyurethane coating with increased limiting film thickness and preparation method of aqueous polyurethane coating |
| CN105505167A (en) * | 2015-12-25 | 2016-04-20 | 北京展辰新材料有限公司 | Waterborne bi-component bright white finish and application thereof |
| CN107142004A (en) * | 2017-04-18 | 2017-09-08 | 河北晨阳工贸集团有限公司 | A kind of aqueous industrial guardrail paint |
| CN108250930A (en) * | 2018-01-30 | 2018-07-06 | 河北晨阳工贸集团有限公司 | A kind of agricultural machinery environment protecting water-based paint and preparation method |
| CN112585226A (en) * | 2018-09-21 | 2021-03-30 | 陶氏环球技术有限责任公司 | Two-component polyurethane composition |
| CN110964152A (en) * | 2019-11-13 | 2020-04-07 | 广州化工研究设计院有限公司 | Quick-drying core-shell structure hydroxyl acrylic emulsion and preparation method and application thereof |
| WO2021109106A1 (en) * | 2019-12-06 | 2021-06-10 | Dow Global Technologies Llc | Two-component polyurethane composition |
| US11732082B2 (en) | 2019-12-06 | 2023-08-22 | Dow Global Technologies Llc | Two-component polyurethane composition |
| CN111303744A (en) * | 2020-03-17 | 2020-06-19 | 华南师范大学 | Aqueous polyurethane coating containing phytic acid modified MXene and preparation method thereof |
| CN111303744B (en) * | 2020-03-17 | 2021-07-27 | 华南师范大学 | Aqueous polyurethane coating containing phytic acid modified MXene and preparation method thereof |
| CN113943525A (en) * | 2020-07-15 | 2022-01-18 | Ｋｃｃ公司 | Water-soluble coating composition for finishing paint |
| CN112662220A (en) * | 2020-12-17 | 2021-04-16 | 桂林理工大学 | Corrosion-resistant antibacterial antistatic coating and preparation method thereof |
| CN113234388A (en) * | 2021-06-02 | 2021-08-10 | 广州翔铭环保新材料有限公司 | Water-based PU gloss oil and preparation method thereof |
| CN113831813A (en) * | 2021-10-19 | 2021-12-24 | 海南必凯水性新材料有限公司 | Water-based paint for sun-shading umbrella used in sunny days and rainy days, preparation method of water-based paint and sun-shading umbrella |
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