CN104725570A - Latex and preparation method thereof - Google Patents
Latex and preparation method thereof Download PDFInfo
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- CN104725570A CN104725570A CN201510036596.5A CN201510036596A CN104725570A CN 104725570 A CN104725570 A CN 104725570A CN 201510036596 A CN201510036596 A CN 201510036596A CN 104725570 A CN104725570 A CN 104725570A
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- latex
- modified polyurethane
- rubber latex
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- epoxy resin
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Abstract
The invention provides latex prepared from the following raw materials in percentage by weight: 5-20% of water-based modified polyurethane rubber latex, 8-30% of methyl methacrylate, 6-20% of butyl acrylate, 0.5-1.0% of a functional monomer, 0.5-0.8% of sodium hydrogen carbonate, 0.8-1.2% of an anionic emulsifier, 0.4-0.6% of a nonionic emulsifier, 40-60% of deionized water and 0.2-0.6% of an initiating agent. According to the latex provided by the invention, an epoxy resin component is introduced into the water-based modified polyurethane rubber latex, so that modified polyurethane-acrylate grafted copolymerized latex can be endowed with the characteristics such as strong adhesive force with a base material, solvent resistance and excellent corrosion resistance of epoxy resin, the hardness of a latex film can reach 6H, the latex can form a film at room temperature, a rubber latex film is transparent, weather-resistant, water-resistant and heat-resistant, and similar characteristics are not reported in literatures.
Description
Technical field
The present invention relates to a kind of latex and preparation method thereof.
Background technology
Perfect further along with environmental law, low VOC or Diamond Search discharge new coating become the focus of research and development.Aqueous polyurethane is the new polyurethane system using water to replace organic solvent as dispersion medium, can be widely used in the aspects such as coating, tackiness agent, hide finishes, fabric finishing agent.Owing to possessing nontoxic, inexpensive, safe, improving constantly of advantage and the self performance such as not firing, show huge market outlook and have the trend progressively replacing solvent based product.Existence due to hydrophilic radical makes aqueous polyurethane product poor in water-fast, solvent resistant, weathering resistance etc.; And polyacrylic ester series products has good performance in weather-proof, water-fast, solvent resistant, film gloss retention etc., but do not possess that urethane intensity is high, elasticity and the advantage such as adhesiveproperties is good, therefore polyacrylic ester (PA) and urethane (PU) performance have good complementarity.
Summary of the invention
For above-mentioned defect and the problem of prior art, the object of this invention is to provide a kind of modified polyurethane-acrylic ester graft copolymerized latex and preparation method thereof, this latex had both had the splendid sticking power of urethane resin and wear resistance, there is again the extraordinary cold-hot water-based of acrylic resin, excellent weathering resistance, chemical-resistant and pigment wettability and mechanical stability against short circuit preferably, avoid the problem of shortcoming that urethane resin easily turns yellow and vinylformic acid, urethane mixed emulsion poor compatibility and poor chemical stability simultaneously.
Based on above-mentioned purpose, the invention provides following technical scheme:
A kind of latex, is made up of the raw material of following weight proportion: the watersoluble modified polyurethane rubber latex of 5 ~ 20%, the methyl methacrylate of 8 ~ 30%, 6 ~ 20% butyl acrylate, 0.5 ~ 1.0% functional monomer, 0.5 ~ 0.8% sodium bicarbonate, 0.8 ~ 1.2% anionic emulsifier, the nonionic emulsifier of 0.4 ~ 0.6%, the deionized water of 40 ~ 60% and 0.2 ~ 0.6% initiator.
Further, described watersoluble modified polyurethane rubber latex is made up of aliphatic diisocyanate, polyester polyol, epoxy resin, 2,2-two (methylol) propionic acid, Hydroxyethyl acrylate and triethylamines, adopts self-emulsification to be prepared from;
The weight ratio of described aliphatic diisocyanate, polyester polyol, epoxy resin, 2,2-two (methylol) propionic acid, Hydroxyethyl acrylate and triethylamines is 15: 19: 1: 1: 0.5: 1.5.
Further, the solid content of described watersoluble modified polyurethane rubber latex is 35 ~ 40%.
Beneficial effect of the present invention, because watersoluble modified polyurethane adhesive Ruzhong introduces epoxy resin ingredient, the feature of modified polyurethane-acrylic ester graft copolymerized latex epoxy resin can be given, as with the advantage such as the strong adhesion of base material, solvent resistance and antiseptic property be excellent, the hardness of latex film can up to 6H, and latex can room temperature film-forming, and latex film is transparent, weather-proof, water-fast and heat-resisting, similar character has no bibliographical information.
Embodiment
Below in conjunction with embodiments of the invention, be clearly and completely described technical scheme of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
A kind of latex, is made up of the raw material of following weight proportion: the watersoluble modified polyurethane rubber latex of 5 ~ 20%, the methyl methacrylate of 8 ~ 30%, 6 ~ 20% butyl acrylate, 0.5 ~ 1.0% functional monomer, 0.5 ~ 0.8% sodium bicarbonate, 0.8 ~ 1.2% anionic emulsifier, the nonionic emulsifier of 0.4 ~ 0.6%, the deionized water of 40 ~ 60% and 0.2 ~ 0.6% initiator.
Preferably technical scheme, described watersoluble modified polyurethane rubber latex is made up of aliphatic diisocyanate, polyester polyol, epoxy resin, 2,2-two (methylol) propionic acid, Hydroxyethyl acrylate and triethylamines, adopts self-emulsification to be prepared from;
The weight ratio of described aliphatic diisocyanate, polyester polyol, epoxy resin, 2,2-two (methylol) propionic acid, Hydroxyethyl acrylate and triethylamines is 15: 19: 1: 1: 0.5: 1.5.
Preferably technical scheme, the solid content of described watersoluble modified polyurethane rubber latex is 35 ~ 40%.
Concrete steps are as follows:
(1) take each raw material of following weight proportion: the watersoluble modified polyurethane rubber latex of 5%, the methyl methacrylate of 30%, 12.1% butyl acrylate, 1.0% vinylformic acid, 0.5% sodium bicarbonate, 0.8% sodium lauryl sulphate, the polyoxyethylene nonylphenol ether of 0.4%, the deionized water of 50% and 0.2% Potassium Persulphate.
Wherein, above-mentioned methyl methacrylate, butyl acrylate, vinylformic acid, sodium bicarbonate, sodium lauryl sulphate, polyoxyethylene nonylphenol ether, deionized water and Potassium Persulphate are added room temperature pre-emulsification in emulsor, obtain pre-emulsion; Again the watersoluble modified polyurethane rubber latex in above-mentioned raw materials is added and stir in polymerization reactor, raised temperature to 70 DEG C;
(2) described pre-emulsion was evenly added drop-wise in 3 hours described watersoluble modified polyurethane adhesive Ruzhong, temperature controls at 80 DEG C;
(3) after dropping terminates, then at the temperature of 80 DEG C, stir after 0.5 hour, be warming up to 88 DEG C, continue reaction 0.5 hour, be cooled to 40 DEG C, filter, obtain modified polyurethane-acrylic ester graft copolymerized latex.
The modified polyurethane-acrylic ester graft copolymerized latex obtained is spherical, and particle diameter is 80nm.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should described be as the criterion with the protection domain of claim.
Claims (3)
1. a latex, it is characterized in that, be made up of the raw material of following weight proportion: the watersoluble modified polyurethane rubber latex of 5 ~ 20%, the methyl methacrylate of 8 ~ 30%, 6 ~ 20% butyl acrylate, 0.5 ~ 1.0% functional monomer, 0.5 ~ 0.8% sodium bicarbonate, 0.8 ~ 1.2% anionic emulsifier, the nonionic emulsifier of 0.4 ~ 0.6%, the deionized water of 40 ~ 60% and 0.2 ~ 0.6% initiator.
2. latex according to claim 1, it is characterized in that, described watersoluble modified polyurethane rubber latex is made up of aliphatic diisocyanate, polyester polyol, epoxy resin, 2,2-two (methylol) propionic acid, Hydroxyethyl acrylate and triethylamines, adopts self-emulsification to be prepared from;
The weight ratio of described aliphatic diisocyanate, polyester polyol, epoxy resin, 2,2-two (methylol) propionic acid, Hydroxyethyl acrylate and triethylamines is 15: 19: 1: 1: 0.5: 1.5.
3. latex according to claim 1, is characterized in that, the solid content of described watersoluble modified polyurethane rubber latex is 35 ~ 40%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510036596.5A CN104725570A (en) | 2015-01-26 | 2015-01-26 | Latex and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510036596.5A CN104725570A (en) | 2015-01-26 | 2015-01-26 | Latex and preparation method thereof |
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| CN104725570A true CN104725570A (en) | 2015-06-24 |
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| CN201510036596.5A Pending CN104725570A (en) | 2015-01-26 | 2015-01-26 | Latex and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109134775A (en) * | 2018-07-06 | 2019-01-04 | 湖南松本林业科技股份有限公司 | A kind of rosin based aqueous polyurethanes acrylic acid ester emulsion, adhesive and preparation method thereof |
| CN111234602A (en) * | 2020-03-31 | 2020-06-05 | 浙江材华科技有限公司 | High-adhesion color water-based ink for plastics and preparation method thereof |
| CN111876107A (en) * | 2020-02-20 | 2020-11-03 | 杭州星华反光材料股份有限公司 | Epoxy polyurethane modified acrylic resin adhesive and preparation method and application thereof |
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| DE19858732A1 (en) * | 1998-12-18 | 2000-06-21 | Bayer Ag | Aqueous, two-component polyurethane coating material for various substrates contains, as binder, polyisocyanate in aqueous solution or dispersion of graft copolymer with elastomeric and thermoplastic polyol components |
| CN1355267A (en) * | 2001-12-24 | 2002-06-26 | 王申 | Water-soluble polyurethane latex adhesive with porous network formed by 'core-shell' structure |
| CN1438257A (en) * | 2003-03-06 | 2003-08-27 | 华南理工大学 | Acrylic polyurethane copolymer emulsion, its preparation method and use |
| CN1544500A (en) * | 2003-11-27 | 2004-11-10 | 中国科学院广州化学研究所 | Core-shell particles with acroleic acid esterified polyurethane as main body of core and making method and use thereof |
| CN1884336A (en) * | 2006-05-23 | 2006-12-27 | 山东圣光化工集团有限公司 | Acrylic acid-epoxy resin modified aqueous polyurethane preparation method |
| CN101481451A (en) * | 2009-01-23 | 2009-07-15 | 华南理工大学 | High solid content latent curing polyurethane acroleic acid hybrid emulsion |
| CN101735754A (en) * | 2009-12-30 | 2010-06-16 | 黑龙江省科学院石油化学研究院 | Method for plasticizing phenol formaldehyde adhesive by using polyurethane/acrylate composite resin |
| CN102604528A (en) * | 2012-03-09 | 2012-07-25 | 常熟市协新冶金材料有限公司 | Epoxy acrylic ester modified water-based polyurethane coating |
| CN102690398A (en) * | 2011-08-18 | 2012-09-26 | 扬州市伊丽特高分子材料科技有限公司 | Latex and preparation method thereof |
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2015
- 2015-01-26 CN CN201510036596.5A patent/CN104725570A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19858732A1 (en) * | 1998-12-18 | 2000-06-21 | Bayer Ag | Aqueous, two-component polyurethane coating material for various substrates contains, as binder, polyisocyanate in aqueous solution or dispersion of graft copolymer with elastomeric and thermoplastic polyol components |
| CN1355267A (en) * | 2001-12-24 | 2002-06-26 | 王申 | Water-soluble polyurethane latex adhesive with porous network formed by 'core-shell' structure |
| CN1438257A (en) * | 2003-03-06 | 2003-08-27 | 华南理工大学 | Acrylic polyurethane copolymer emulsion, its preparation method and use |
| CN1544500A (en) * | 2003-11-27 | 2004-11-10 | 中国科学院广州化学研究所 | Core-shell particles with acroleic acid esterified polyurethane as main body of core and making method and use thereof |
| CN1884336A (en) * | 2006-05-23 | 2006-12-27 | 山东圣光化工集团有限公司 | Acrylic acid-epoxy resin modified aqueous polyurethane preparation method |
| CN101481451A (en) * | 2009-01-23 | 2009-07-15 | 华南理工大学 | High solid content latent curing polyurethane acroleic acid hybrid emulsion |
| CN101735754A (en) * | 2009-12-30 | 2010-06-16 | 黑龙江省科学院石油化学研究院 | Method for plasticizing phenol formaldehyde adhesive by using polyurethane/acrylate composite resin |
| CN102690398A (en) * | 2011-08-18 | 2012-09-26 | 扬州市伊丽特高分子材料科技有限公司 | Latex and preparation method thereof |
| CN102604528A (en) * | 2012-03-09 | 2012-07-25 | 常熟市协新冶金材料有限公司 | Epoxy acrylic ester modified water-based polyurethane coating |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109134775A (en) * | 2018-07-06 | 2019-01-04 | 湖南松本林业科技股份有限公司 | A kind of rosin based aqueous polyurethanes acrylic acid ester emulsion, adhesive and preparation method thereof |
| CN111876107A (en) * | 2020-02-20 | 2020-11-03 | 杭州星华反光材料股份有限公司 | Epoxy polyurethane modified acrylic resin adhesive and preparation method and application thereof |
| CN111234602A (en) * | 2020-03-31 | 2020-06-05 | 浙江材华科技有限公司 | High-adhesion color water-based ink for plastics and preparation method thereof |
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Application publication date: 20150624 |
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