CN103276625A - Method for preparing calcium stearate water-based dispersion liquid - Google Patents
Method for preparing calcium stearate water-based dispersion liquid Download PDFInfo
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- CN103276625A CN103276625A CN2013101549929A CN201310154992A CN103276625A CN 103276625 A CN103276625 A CN 103276625A CN 2013101549929 A CN2013101549929 A CN 2013101549929A CN 201310154992 A CN201310154992 A CN 201310154992A CN 103276625 A CN103276625 A CN 103276625A
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Abstract
The invention discloses a method for preparing a calcium stearate water-based dispersion liquid. The method comprises the following steps: adding water and an emulsifier, a dispersant and 20-40% of the total content of a defoaming agent in a reaction kettle in a certain proportion, stirring until the emulsifier is dispersed uniformly, then stopping stirring, adding calcium stearate into the reaction kettle, then rapidly stirring until calcium stearate is completely wetted, then reducing the stirring speed and continuing to stir for 30-45 min, then adding a preservative and 60-80% of the total content of the defoaming agent into the reaction kettle, after carrying out superfine grinding for 3-8 min, screening through a 1000-1500 mesh supersonic wave vibrating screen, and obtaining the calcium stearate water-based dispersion liquid with the particle size of 5-10 microns. The method has the advantages of being simple in formula, easy to operate, and short in time consumption; and the product is non-crusting, is good in homogeneity and stabilization, is environmentally friendly, has adjustable solid content of calcium stearate and adjustable viscosity of the final system in a certain scope, and has an ideal lubrication effect.
Description
Technical field
The present invention relates to a kind of preparation method of calcium stearate aqueous liquid dispersion, this calcium stearate aqueous liquid dispersion is mainly as papermaking coating process auxiliary agent, plastic processing lubricant, textile water proof agent and paint flatting agent.
Background technology
Calcium stearate can also be as flatting agent and waterproofing agent in coating material production because good lubricity is widely used in paper making applying lubricating agent and polychloroethylene heat stabilizer field.Be accompanied by developing rapidly of plastics, coating, paper machine petroleum chemical industry, the demand of calcium stearate increases year by year, and market prospects still are expected.
Calcium stearate has water-insoluble matter, in order to increase its dispersed uniform and good flowability, generally is made into aqueous liquid dispersion and uses when using as lubricant.At present, the preparation method of calcium stearate aqueous liquid dispersion is divided into following two kinds.
A kind of is one-step method, other auxiliary agent of calcium salt or calcium hydroxide, stearic acid, emulsifying agent and some is synthetic through one step of reaction, the prepared product cut size of this method is little, but reaction is difficult for reaching fully, in addition having relatively high expectations to additives such as dispersant, emulsifying agents under the condition of long-term heating.Chinese patent application 201110076884.5 discloses a kind of preparation method of nonionic calcium stearate aqueous liquid dispersion; it adds water according to a certain percentage, stearic acid, emulsifying agent A, emulsifying agent B, emulsion adjuvant, the protecting colloid aqueous solution, defoamer, bactericide, electrolytic salt be in container; heat temperature raising to 85 ℃ then; quick stirring and emulsifying; after the constant temperature emulsification 1 hour; reduce mixing speed again; the basifier that slowly adds certain proportional quantity; constant temperature stirred 3 hours; be quickly cooled to room temperature then, namely obtain target product.This method needs 5 hours time at least, and is consuming time longer.
Another kind is two-step method, and preparation calcium stearate powder is distributed to the calcium stearate powder under the effect of auxiliary agents such as surfactant in the water more uniformly earlier, grinds at last.This method is simply easy, is the maximum method of the synthetic employing of calcium stearate in the market; But, because calcium stearate has stronger hydrophobicity, have the shortcoming that the emulsifying dispersant consumption is big, relative cost is higher when therefore preparing.
Therefore, guaranteeing that the every index of calcium stearate aqueous liquid dispersion reaches required the requiring under the prerequisite of production application, the reasonable optimizing prescription, reducing cost is very important.
Summary of the invention
For addressing the above problem, the purpose of this invention is to provide a kind of preparation method of calcium stearate aqueous liquid dispersion, simple, the consuming time weak point of its production technology, reduced production cost, the performance of calcium stearate aqueous liquid dispersion is improved significantly.
For achieving the above object, the present invention adopts following technical scheme:
A kind of preparation method of calcium stearate aqueous liquid dispersion, it may further comprise the steps: measure according to a certain ratio water and emulsifying agent, 20～40% of dispersant and defoamer total amount adds in the reactor, be stirred to and stop after emulsifying agent is uniformly dispersed stirring, add calcium stearate, be stirred to fast then calcium stearate fully wetted after, after reducing mixing speed continuation stirring 30～45min, 60～80% and the preservative agent that add the defoamer total amount again, after carrying out superfine grinding 3～8min, by the screening of 1000～1500 purpose ultrasonic vibrations sieve, obtaining granularity is the calcium stearate aqueous liquid dispersion of 5～10 μ m;
Wherein, the quality percentage composition of each component is respectively: water is 40～68%, and calcium stearate is 30～55%, and dispersant is 0.1～0.5%, and emulsifying agent is 1～4%, defoamer 0.1～0.5%, preservative agent 0.1～0.5%.
The calcium stearate aqueous liquid dispersion of method for preparing gained, solid content are 30～55wt%, and particle size range is 5～10 μ m, and range of viscosities is 106～234mPa.S.
Further, above-mentioned dispersant is the one or more combination in styrene-maleic anhydride copolymer, stearyl polyethenoxy ether, sodium phosphate trimer, sodium pyrophosphate, PEG400, the urea.
Further, above-mentioned emulsifying agent is the one or more combination in Tween-80, polysorbate60, sodium sulfate of polyethenoxy ether of fatty alcohol, polyoxyethylene-polyoxypropylene copolymer, fatty alcohol-polyoxyethylene ether, polyglycereol monolaurate, the polyethylene glycol laurate.
Further, above-mentioned defoamer is the one or more combination in soluble silane defoamer, modified polyether defoamer, the polyether-modified silicon defoaming agent.
Further, above-mentioned preservative agent is the one or more combination in isothiazolinone, dichlorodimethylhydantoin, methyl p-hydroxybenzoate, the cloth sieve bohr.
Further, above-mentioned water is running water or deionized water.
Further, among the preparation method of above-mentioned calcium stearate aqueous liquid dispersion, water and emulsifying agent, dispersant and defoamer are stirred to emulsifying agent with the mixing speed of 1000～3000r/min and are uniformly dispersed in reactor.
Further, among the preparation method of above-mentioned calcium stearate aqueous liquid dispersion, it is wetted fully to be stirred to calcium stearate fast with the mixing speed of 10000～15000r/min.
Further, among the preparation method of above-mentioned calcium stearate aqueous liquid dispersion, with mixing speed stirring 30～45min of 5000～8000r/min.
Because adopt aforesaid technical scheme, the present invention has following superiority:
The preparation method of calcium stearate aqueous liquid dispersion of the present invention, the calcium stearate aqueous liquid dispersion solid content that it makes is 30～55wt%, and particle size range is 5～10 μ m, and range of viscosities is 106～234mPa.S; When the stirring and emulsifying agent disperses it in water, can produce many foams, and calcium stearate has good steady bubble ability, therefore, before adding calcium stearate, add a part of defoamer, can avoid the existence of a large amount of foams, can save the step of vacuum froth breaking, thereby the saving cost is saved time; This method prescription is simple, easy operating, weak point consuming time, and product not viscosity adjustable, environmental friendliness, the lubricant effect ideal within the specific limits of good, the calcium stearate solid content of skinning, homogeneous stable performance and final system.
The specific embodiment
Can be described in further detail the present invention with reference to following examples; But following examples only are illustrations, and the present invention is not limited to these embodiment.
Embodiment 1
In reactor, add 33.63kg water, the 55g sodium phosphate trimer, 40g urea, the 750g fatty alcohol-polyoxyethylene ether, 370g Tween-80 and 40g dimethyl silicone polymer defoamer, be stirred to the mechanical agitation speed of 1000r/min and stop after emulsifying agent is uniformly dispersed fully stirring, add 15kg calcium stearate powder, then with the mixing speed of 10000r/min be stirred to fast the calcium stearate powder wetted fully after, after reducing the mixing speed continuation stirring 30min of mixing speed with 5000r/min, add 50g dimethyl silicone polymer defoamer and 65g isothiazolinone preservative agent again, after carrying out superfine grinding 3min, by the screening of 1000 purpose ultrasonic vibrations sieve, obtaining viscosity is 120mPaS, particle mean size is 5 μ m, solid content is the calcium stearate aqueous liquid dispersion of 30wt%.
Embodiment 2
In reactor, add 28.458kg water, the 82g styrene-maleic anhydride copolymer, the 60g PEG400, the 1000g sodium sulfate of polyethenoxy ether of fatty alcohol, 200g polyethylene glycol laurate and 50g modified polyether defoamer HT-610, be stirred to the mechanical agitation speed of 7000r/min and stop after emulsifying agent is uniformly dispersed fully stirring, add 20kg calcium stearate powder, then with the mixing speed of 10000r/min be stirred to fast the calcium stearate powder wetted fully after, after reducing the mixing speed continuation stirring 1h of mixing speed with 5000r/min, add 80g dimethyl silicone polymer defoamer and 70g dichlorodimethylhydantoin preservative agent again, after carrying out superfine grinding 5min, by the screening of 1000 purpose ultrasonic vibrations sieve, obtaining viscosity is 150mPaS, particle mean size is 8 μ m, solid content is the calcium stearate aqueous liquid dispersion of 40wt%.
Embodiment 3
In reactor, add 23.095kg water, the 105g styrene-maleic anhydride copolymer, the 20g sodium phosphate trimer, 250g polyglycereol monolaurate, 550g polyoxyethylene-polyoxypropylene copolymer, 800g sodium sulfate of polyethenoxy ether of fatty alcohol and 50g modified polyether defoamer DMF-670, be stirred to the mechanical agitation speed of 7000r/min and stop after emulsifying agent is uniformly dispersed fully stirring, add 25kg calcium stearate powder, then with the mixing speed of 12000r/min be stirred to fast the calcium stearate powder wetted fully after, after reducing the mixing speed continuation stirring 90min of mixing speed with 4000r/min, add 50g modified polyether defoamer DMF-670 and 80g methyl p-hydroxybenzoate preservative agent again, after carrying out superfine grinding 3min, by the screening of 1000 purpose ultrasonic vibrations sieve, obtaining viscosity is 200mPaS, particle mean size is 10 μ m, solid content is the calcium stearate aqueous liquid dispersion of 50wt%.
In the preparation method of calcium stearate aqueous liquid dispersion of the present invention, the modified polyether defoamer can also be selected the one or more combination in defoamer HT-606, defoamer G6 or the polyoxypropylene oxygen ethene polyol ethers for use.
Claims (10)
1. the preparation method of a calcium stearate aqueous liquid dispersion, it is characterized in that: it may further comprise the steps: measure according to a certain ratio water and emulsifying agent, 20～40% of dispersant and defoamer total amount adds in the reactor, be stirred to and stop after emulsifying agent is uniformly dispersed stirring, add calcium stearate, be stirred to fast then calcium stearate fully wetted after, after reducing mixing speed continuation stirring 30～45min, 60～80% and the preservative agent that add the defoamer total amount again, after carrying out superfine grinding 3～8min, by the screening of 1000～1500 purpose ultrasonic vibrations sieve, obtaining granularity is the calcium stearate aqueous liquid dispersion of 5～10 μ m;
Wherein, the quality percentage composition of each component is respectively: water is 40～68%, and calcium stearate is 30～55%, and dispersant is 0.1～0.5%, and emulsifying agent is 1～4%, defoamer 0.1～0.5%, preservative agent 0.1～0.5%.
2. the preparation method of calcium stearate aqueous liquid dispersion according to claim 1 is characterized in that: calcium stearate aqueous liquid dispersion solid content of its preparation gained is 30～55wt%, and particle size range is 5～10 μ m, and range of viscosities is 106～234mPa.S.
3. the preparation method of calcium stearate aqueous liquid dispersion according to claim 1, it is characterized in that: its dispersant is the one or more combination in styrene-maleic anhydride copolymer, stearyl polyethenoxy ether, sodium phosphate trimer, sodium pyrophosphate, PEG400, the urea.
4. the preparation method of calcium stearate aqueous liquid dispersion according to claim 1, it is characterized in that: its emulsifying agent is the one or more combination in Tween-80, polysorbate60, sodium sulfate of polyethenoxy ether of fatty alcohol, polyoxyethylene-polyoxypropylene copolymer, fatty alcohol-polyoxyethylene ether, polyglycereol monolaurate, the polyethylene glycol laurate.
5. the preparation method of calcium stearate aqueous liquid dispersion according to claim 1, it is characterized in that: its defoamer is the one or more combination in soluble silane defoamer, modified polyether defoamer, the polyether-modified silicon defoaming agent.
6. the preparation method of calcium stearate aqueous liquid dispersion according to claim 1, it is characterized in that: its preservative agent is the one or more combination in isothiazolinone, dichlorodimethylhydantoin, methyl p-hydroxybenzoate, the cloth sieve bohr.
7. the preparation method of calcium stearate aqueous liquid dispersion according to claim 1, it is characterized in that: its water is running water or deionized water.
8. the preparation method of calcium stearate aqueous liquid dispersion according to claim 1 is characterized in that: water and emulsifying agent, dispersant and defoamer are stirred to emulsifying agent with the mixing speed of 1000～3000r/min and are uniformly dispersed in reactor.
9. the preparation method of calcium stearate aqueous liquid dispersion according to claim 1 is characterized in that: it is wetted fully to be stirred to calcium stearate fast with the mixing speed of 10000～15000r/min.
10. the preparation method of calcium stearate aqueous liquid dispersion according to claim 1 is characterized in that: with mixing speed stirring 30～45min of 5000～8000r/min.
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Cited By (8)
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| CN104194904A (en) * | 2014-04-18 | 2014-12-10 | 洛阳惠尔纳米科技有限公司 | An aqueous lithium stearate dispersion liquid and a preparing method thereof |
| CN105621932A (en) * | 2015-12-29 | 2016-06-01 | 福建建工建材科技开发有限公司 | Foam-stabilizing reinforcing agent for chemical-foamed foam concrete |
| CN107217538A (en) * | 2017-07-17 | 2017-09-29 | 黄河三角洲京博化工研究院有限公司 | A kind of water-soluble calcium stearate dispersion and preparation method thereof |
| CN107825307A (en) * | 2017-11-11 | 2018-03-23 | 淄博理研泰山涂附磨具有限公司 | A kind of preparation method of anti-blocking environmentally friendly sand paper |
| CN108411698A (en) * | 2018-03-08 | 2018-08-17 | 广东龙湖科技股份有限公司 | The preparation method of water-based zinc stearate lotion, the product by this method acquisition and its application |
| CN109354917A (en) * | 2018-10-11 | 2019-02-19 | 广州正浩新材料科技有限公司 | A kind of water-based calcium stearate lotion and preparation method thereof |
| CN109880430A (en) * | 2019-01-28 | 2019-06-14 | 洛阳烨方新材料科技有限公司 | It is a kind of for coating or the Stearyl Amine colloid of flocking technique and preparation method thereof |
| CN110878489A (en) * | 2019-12-04 | 2020-03-13 | 新沂市星辰新材料科技有限公司 | Stable water-based calcium stearate dispersion liquid and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104194904A (en) * | 2014-04-18 | 2014-12-10 | 洛阳惠尔纳米科技有限公司 | An aqueous lithium stearate dispersion liquid and a preparing method thereof |
| CN105621932A (en) * | 2015-12-29 | 2016-06-01 | 福建建工建材科技开发有限公司 | Foam-stabilizing reinforcing agent for chemical-foamed foam concrete |
| CN107217538A (en) * | 2017-07-17 | 2017-09-29 | 黄河三角洲京博化工研究院有限公司 | A kind of water-soluble calcium stearate dispersion and preparation method thereof |
| CN107217538B (en) * | 2017-07-17 | 2019-01-11 | 黄河三角洲京博化工研究院有限公司 | A kind of water solubility calcium stearate dispersion and preparation method thereof |
| CN107825307A (en) * | 2017-11-11 | 2018-03-23 | 淄博理研泰山涂附磨具有限公司 | A kind of preparation method of anti-blocking environmentally friendly sand paper |
| CN108411698A (en) * | 2018-03-08 | 2018-08-17 | 广东龙湖科技股份有限公司 | The preparation method of water-based zinc stearate lotion, the product by this method acquisition and its application |
| CN109354917A (en) * | 2018-10-11 | 2019-02-19 | 广州正浩新材料科技有限公司 | A kind of water-based calcium stearate lotion and preparation method thereof |
| CN109354917B (en) * | 2018-10-11 | 2021-08-10 | 广州正浩新材料科技有限公司 | Water-based calcium stearate emulsion and preparation method thereof |
| CN109880430A (en) * | 2019-01-28 | 2019-06-14 | 洛阳烨方新材料科技有限公司 | It is a kind of for coating or the Stearyl Amine colloid of flocking technique and preparation method thereof |
| CN110878489A (en) * | 2019-12-04 | 2020-03-13 | 新沂市星辰新材料科技有限公司 | Stable water-based calcium stearate dispersion liquid and preparation method thereof |
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