CN100590157C - Method for preparing aqueous polyurethane thickener - Google Patents
Method for preparing aqueous polyurethane thickener Download PDFInfo
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- CN100590157C CN100590157C CN200510062598A CN200510062598A CN100590157C CN 100590157 C CN100590157 C CN 100590157C CN 200510062598 A CN200510062598 A CN 200510062598A CN 200510062598 A CN200510062598 A CN 200510062598A CN 100590157 C CN100590157 C CN 100590157C
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Abstract
Compared to prior art, the disclosed aqueous polyurethane thickener has well texture, enough cover capacity, and high construction strength. The corresponding preparation method is simple and low cost.
Description
Technical field
The present invention relates to a kind of preparation method of thickening material, especially a kind of preparation method of aqueous polyurethane thickener.
Background technology
Water-borne coatings comprises water soluble paint and latex coating, and wherein the latex application of paints is the widest.Thickening material mainly is at latex coating, and water-borne coatings improves operation and construction environment because of having the minimizing environmental pollution, saves advantages such as a large amount of organic solvents, and becomes one of developing direction of coatings industry.Water-borne coatings is made dispersion with water, and water viscosity is little, easy precipitation such as pigment in the storage process, and it is not plentiful to film during construction, easily sagging.Therefore must debug the viscosity of water-borne coatings (particularly latex coating), to satisfy the coating storage, to construct to the requirement of viscosity.Thickening material is an important auxiliary agent of regulating dope viscosity, the sedimentation that also helps to slow down pigment particles, the dispersiveness of increase pigment particles.
Traditional thickening material is mainly water-soluble high-molecular material, is the structure of total hydrophilic on the molecular structure, does not have hydrophobic segment.This class thickening material mainly contains cellulose family and acrylic thickener.This class thickening material and water molecules form continuous homogeneous system by the hydrogen bond hydration with water, and simultaneously intermolecular also the existence twines, and viscosity is very big when leaving standstill like this, helps preventing the pigment sedimentation.But under the high shear rate of construction, force these windings to be drawn back, make molecular chain stretching along shear direction, the system viscosity degradation of causing is very fast; Viscosity is low excessively, causes to film thinlyyer, and texture is not plentiful, the dry hiding power deficiency, and therefore strengthened construction intensity.
Summary of the invention
In order to change all drawbacks that traditional thickening material exists, the invention discloses a kind of preparation method of aqueous polyurethane thickener.
A kind of preparation method of aqueous polyurethane thickener comprises the steps:
(1) at first adding the dodecanol end capping agent of the polyoxyethylene glycol monododecyl ether of the PEG of 60～70 parts (weight ratios) and 7.16～8.36 parts (weight ratios) or 1.12～1.31 parts (weight ratios) to 250ml three advances in the neck bottle, start stirring behind the heating and melting, begin to vacuumize after being warming up to 100 ℃, dewatered three hours.
(2) then be cooled to 60～80 ℃, add 2.36～5.0 parts of vulcabond (weight ratio), high-speed stirring adds the catalyzer of 0.035～0.052 part (weight ratio) after 15 minutes.
(3) add after catalyzer finishes, be warming up to 120 ℃ gradually in five minutes, reaction system viscosity raises, and while hot product is poured in the polytetrafluoroethyldisk disk.
(4) put into 100 ℃ of baking ovens baking five hours, put in the moisture eliminator then and cool off, cooling is placed in the valve bag and seals, blocks of solid, Here it is institute's synthetic association type polyurethane thickener.
(5) get 20 parts of prepared thickening materials at last, add 80 parts water and be deployed into that to contain admittedly be 20% solution, promptly obtained aqueous polyurethane thickener.
The molecular weight of used polyoxyethylene glycol is 3350 or 4000 or 6000 or 10000 in this preparation method the first step.Used end-capping reagent is polyoxyethylene glycol monododecyl ether or dodecane monoisocyanates or dodecanol or n-Octanol, wherein preferred dodecanol.
The vulcabond that this preparation method used in second step is hexamethylene diisocyanate (HDI) or 4,4-diphenylmethanediisocyanate (MDI) or hydrogenation 4,4-diphenylmethanediisocyanate (HMDI) or isophorone diisocyanate (IPDI), the best results of hexamethylene diisocyanate wherein is the thickening material of not yellowing with the associative thickener of its preparation.The catalyzer that uses makes dibutyl tin laurate or stannous octoate.
Embodiment
In order to implement the present invention better, now lift following example and illustrated, but example not a limitation of the present invention.
Example 1 at first add the PEG3350 of 67 parts (weight ratios) and 8 parts polyoxyethylene glycol monododecyl ether (
35), be warming up to 100 ℃ of vacuum hydro-extractions 3 hours, be cooled to 65 ℃, add 4.31 parts hexamethylene diisocyanate (HDI), stir 11min fast, temperature rises to 70 ℃ gradually, adds 0.05 part of dibutyl tin laurate, reacts 3 minutes, temperature rises to 74 ℃, very thickness is poured out and is transferred to 100 ℃ of baking oven bakings 5 hours, gets the white blocks material.
Example 2 is equipped with in the 250ml three-necked bottle of 150 ℃ of thermometers of range and glass stick at exsiccant, adds 70 parts of PEG 3350, and temperature is elevated to 140 ℃, vacuumizes under the high temperature to remove moisture about about three hours.Cool the temperature to 1.28 parts of 5.0 parts of 80 ℃ of adding HMDI and dodecanols then, stirred 20～30 minutes, drip 0.04 part of catalyzer dibutyl tin laurate, reacted 15 minutes, obtain product.Product is placed on the polyfluortetraethylene plate, put into 90 ℃ of baking oven bakings five hours, put in the moisture eliminator then and cool off, cooling is placed in the valve bag and seals, and gets block little yellow sample.
Example 3 is equipped with in the 250ml three-necked bottle of 150 ℃ of range thermometers and glass stick at exsiccant, adds 60 parts PEG 10000, and temperature is elevated to more than 100 ℃, vacuumizes under the high temperature to remove moisture about about three hours.Cool the temperature to 1.12 parts of 2.36 parts of 80 ℃ of adding HMDI and dodecanols then, stirred 20～30 minutes, drip 0.035 part of catalyzer dibutyl tin laurate, reacted 15 minutes, obtain product.Product is placed on the polyfluortetraethylene plate, put into 90 ℃ of baking oven bakings five hours, put in the moisture eliminator then and cool off, cooling is placed in the valve bag and seals, and gets block little yellow sample.
Above-mentioned three prepared polyurethane thickeners of example are respectively got 20 parts, add 80 parts water and be deployed into that to contain admittedly be 20% solution, promptly obtained the association type aqueous polyurethane thickener.
Claims (3)
1, a kind of preparation method of aqueous polyurethane thickener mainly comprises following several steps:
(1) at first adding the dodecanol end capping agent of the polyoxyethylene glycol monododecyl ether of 60～70 parts PEG and 7.16～8.36 parts or 1.12～1.31 parts to 250ml three advances in the neck bottle, start stirring behind the heating and melting, begin to vacuumize after being warming up to 100 ℃, dewatered three hours;
(2) then be cooled to 60～80 ℃, add 2.36～5.0 parts of vulcabond, high-speed stirring adds 0.035～0.052 part catalyzer after 15 minutes;
(3) add after catalyzer finishes, be warming up to 120 ℃ gradually in five minutes, reaction system viscosity raises, and while hot product is poured in the polytetrafluoroethyldisk disk;
(4) put into 100 ℃ of baking ovens baking five hours, put in the moisture eliminator then and cool off, cooling is placed in the valve bag and seals, blocks of solid, Here it is institute's synthetic association type polyurethane thickener;
(5) get 20 parts of prepared thickening materials at last, add 80 parts water and be deployed into that to contain admittedly be 20% solution, promptly obtained aqueous polyurethane thickener;
The above umber is weight part.
2, preparation method according to claim 1, it is characterized in that: described vulcabond is hexamethylene diisocyanate (HDI) or 4,4-diphenylmethanediisocyanate (MDI) or hydrogenation-4,4 diphenylmethanediisocyanate (HMDI) or isophorone diisocyanate (IPDI).
3, preparation method according to claim 1 is characterized in that: described catalyzer is dibutyl tin laurate or stannous octoate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510062598A CN100590157C (en) | 2005-03-28 | 2005-03-28 | Method for preparing aqueous polyurethane thickener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200510062598A CN100590157C (en) | 2005-03-28 | 2005-03-28 | Method for preparing aqueous polyurethane thickener |
Publications (2)
| Publication Number | Publication Date |
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| CN1840587A CN1840587A (en) | 2006-10-04 |
| CN100590157C true CN100590157C (en) | 2010-02-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200510062598A Expired - Fee Related CN100590157C (en) | 2005-03-28 | 2005-03-28 | Method for preparing aqueous polyurethane thickener |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102101908B (en) * | 2009-12-18 | 2012-11-28 | 广州熵能聚合物技术有限公司 | Water soluble polyurethane associative thickener and use thereof |
| CN102964900A (en) * | 2012-11-26 | 2013-03-13 | 张家港顺昌化工有限公司 | Emulsion paint thickener and preparation method thereof |
| CN105860623A (en) * | 2016-04-29 | 2016-08-17 | 大连碧城环保科技股份有限公司 | Water-based paint for metal and preparation method of water-based paint |
| CN105778585A (en) * | 2016-04-29 | 2016-07-20 | 大连碧城环保科技股份有限公司 | Method for producing waterborne coating with phosphated residue |
| US11377553B2 (en) | 2017-04-13 | 2022-07-05 | Byk-Chemie Gmbh | Polymer suitable as a thickener |
| CN107099187A (en) * | 2017-05-04 | 2017-08-29 | 明光市飞洲新材料有限公司 | A kind of special anti-settling thickener preparation technology of building coating |
-
2005
- 2005-03-28 CN CN200510062598A patent/CN100590157C/en not_active Expired - Fee Related
Non-Patent Citations (4)
| Title |
|---|
| 新型水性聚氨酯缔合型增稠剂的研制. 关有俊，谭亮.上海涂料，第43卷第7/8期. 2005 |
| 新型水性聚氨酯缔合型增稠剂的研制. 关有俊，谭亮.上海涂料，第43卷第7/8期. 2005 * |
| 聚氨酯增稠剂在水性涂料中的作用机理及应用. J.H.Bieleman.中国涂料，第3期. 1996 |
| 聚氨酯增稠剂在水性涂料中的作用机理及应用. J.H.Bieleman.中国涂料，第3期. 1996 * |
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Assignee: Shenzhen Oceanpower New Material Technology Co., Ltd. Assignor: Haichuan Industry Co., Ltd., Shenzhen Contract record no.: 2012440020066 Denomination of invention: Method for preparing aqueous polyurethane thickener Granted publication date: 20100217 License type: Exclusive License Open date: 20061004 Record date: 20120418 |
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Granted publication date: 20100217 Termination date: 20160328 |
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