CN1352196A - Process for preparing quaternary ammonium cation starch by semi-dry method - Google Patents
Process for preparing quaternary ammonium cation starch by semi-dry method Download PDFInfo
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- CN1352196A CN1352196A CN 01131573 CN01131573A CN1352196A CN 1352196 A CN1352196 A CN 1352196A CN 01131573 CN01131573 CN 01131573 CN 01131573 A CN01131573 A CN 01131573A CN 1352196 A CN1352196 A CN 1352196A
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- ammonium cation
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Abstract
The semi-dry quaternary ammonium cation starch preparing process includes material compounding, catalyst solutino compounding and heating, and features the molar ratio between the catalyst and 3-chloro-2-hydroxypropyl trimethyl ammonium chloride reagent 1.4-2.8, the molar ratio between the reagent and starch 0.05-0.15, the atomized spray of the catalyst solution to the reactor, heating with circular hot water during reaction and reaction temperature controlled in 50-90 deg.C. The said cation starch preparing process has the advantages of both wet process and dry process, including no material ring break, no starch caking, no need of post-treatment, no "three waste" exhaust, simple process, short reaction period, mild reaction condition, high conversion rate, etc.
Description
Technical field
The present invention relates to a kind of preparation of modified starch, especially adopt preparing quaternary ammonium cation starch by semi-dry method.
Background technology
The preparation technology of quaternary ammonium cation starch has three kinds of wet method (water solvent method), organic solvent method and dry method.Wet method preparation process is a traditional technology, for numerous cationic starch manufacturer generally adopts.Its general preparation method is: in the presence of NaOH, add Na
2SO
4Or NaCl expands to prevent starch, the mol ratio of NaOH and 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride reagent is 2.8: 1, the mol ratio of 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride reagent and starch is 0.05: 1, and 35% starch suspension reacted 4 hours about 50 ℃.The advantage of this technology is the reaction conditions gentleness, and production unit is simple; Its drawback is mainly after scouring and the drying plant investment is big, wastewater problem is outstanding, reaction conversion ratio is low.Organic solvent method is that starch and 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride reagent react in organic solvent.This method major advantage is the no three wastes, reaction conversion ratio height, constant product quality; Its drawback is that cost height, organic solvent are inflammable and explosive dangerous.This method is almost eliminated by manufacturer.Dry preparation process is that starch and 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride reagent mix are dried to moisture content＜1% about 60 ℃, then about 1 hour of 120～150 ℃ of reactions.This technological advantage has or not aftertreatment, the no three wastes, technology is simple, reaction time is short; Its drawback be reaction conversion ratio low, to conversion unit requirement height, unstable product quality.Existing minority cationic starch manufacturer adopts this technology.
Summary of the invention
For overcoming above-mentioned defective, the purpose of this invention is to provide a kind of preparation method of quaternary ammonium cation starch, i.e. semidrying, this method production technique is simple, the reaction conditions gentleness, the transformation efficiency height, cost is low, no aftertreatment, the no three wastes.
For achieving the above object, technical scheme of the present invention is as follows: a kind of preparation method of quaternary ammonium cation starch, comprise proportioning raw materials, preparation catalyst solution, heating, and it is characterized in that:
1. proportioning raw materials: the mol ratio of catalyzer and 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride reagent is 1.4～2.8: 1, and the mol ratio of 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride reagent and starch is 0.05～0.15: 1;
2. catalyzer and 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride reagent are mixed with solution and mix, with the vaporific reaction machine that sprays into;
3. the circulating hot water heating is adopted in reaction, and temperature of reaction is controlled at 50～90 ℃.
The described particle diameter that sprays into the vaporific particle of reaction machine is 30～40 microns.
Described catalyzer is NaOH, KOH, Ca (OH)
2, Na
2O, K
2O, CaO, Na
2CO
3, Na
2SO
4In one or more.
The key equipment of system of the present invention preparation is the hybrid reaction machine, it is on the basis of Luo Si company mixing tank, to mix and unite two into one with reaction and add the broken flitch broken material ring of weldering, adopt the automatic control reaction temperature of circulating hot water, select nozzle control spray particle diameter to overcome the solution hydrojet and meet starch knot grain problem, adopt automatic gauge control according to reaction mechanism preparation speed-change control device soup, solved technical problems such as expecting ring is broken, knot burl piece in the reaction process.
The present invention combines the advantage of wet processing and dry process, and catalyzer with 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride reagent and starch uniform mixing, was reacted 1～4 hour at 50～90 ℃.The advantage of this technology is no aftertreatment, the no three wastes, technology is simple, reaction time is short, reaction conditions is gentle, reaction conversion ratio is high.Semidrying preparation technology is a kind of method of the production cationic starch that is worth of widely use very much.
Embodiment
Embodiment 1: adding W-Gum 30 grams in the tubular vial, add catalyzer and reagent mix solution 5.5 grams, and stirring at room 80 ℃ of reactions 3 hours, got quaternary ammonium cation starch 30 grams after 10 minutes.
Claims (4)
1, a kind of technology of preparing quaternary ammonium cation starch by semi-dry method comprises proportioning raw materials, preparation catalyst solution, heating, it is characterized in that:
1. proportioning raw materials: the mol ratio of catalyzer and 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride reagent is 1.4～2.8: 1, and the mol ratio of 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride reagent and starch is 0.05～0.15: 1;
2. catalyzer and 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride reagent are mixed with solution and mix, with the vaporific reaction machine that sprays into;
3. the circulating hot water heating is adopted in reaction, and temperature of reaction is controlled at 50～90 ℃.
2, the preparation method of quaternary ammonium cation starch according to claim 1 is characterized in that: the water content of reaction system is 20-40%.
3. the preparation method of quaternary ammonium cation starch according to claim 1, it is characterized in that: the particle diameter that sprays into the vaporific particle of reaction machine is 30～40 microns.
4, the preparation method of quaternary ammonium cation starch according to claim 1 is characterized in that: catalyzer is NaOH, KOH, Ca (OH)
2, Na
3O, K
2O, CaO, Na
2CO
3, Na
2SO
4In one or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01131573 CN1352196A (en) | 2001-11-27 | 2001-11-27 | Process for preparing quaternary ammonium cation starch by semi-dry method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01131573 CN1352196A (en) | 2001-11-27 | 2001-11-27 | Process for preparing quaternary ammonium cation starch by semi-dry method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1352196A true CN1352196A (en) | 2002-06-05 |
Family
ID=4670698
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|---|---|---|---|
| CN 01131573 Pending CN1352196A (en) | 2001-11-27 | 2001-11-27 | Process for preparing quaternary ammonium cation starch by semi-dry method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100484961C (en) * | 2006-07-28 | 2009-05-06 | 武汉科技学院 | Irradition initiating process for preparing cationic starch |
| CN1990392B (en) * | 2005-12-07 | 2011-04-06 | 中国科学院成都有机化学有限公司 | High substitution quaternary ammonium cationic starch flocculating agent and method for synthesizing same |
| CN102827294A (en) * | 2012-09-21 | 2012-12-19 | 山东农业大学 | Method for producing cationic starch by using homogeneous phase drying method |
| CN101759880B (en) * | 2010-01-13 | 2013-01-30 | 广东省造纸研究所 | Method for preparing amphiprotic starch solution for papermaking |
| CN103012613A (en) * | 2012-12-06 | 2013-04-03 | 青岛利邦达海洋科技有限公司 | Preparation method for cationic polysaccharide tamarind |
| CN104945523A (en) * | 2015-07-08 | 2015-09-30 | 广东汇美淀粉科技有限公司 | Environment-friendly cation starch flocculant and preparing method thereof |
| CN106188319A (en) * | 2016-07-13 | 2016-12-07 | 广西梧州市明阳生化科技有限公司 | A kind of composite modified starch |
| CN110305230A (en) * | 2018-03-20 | 2019-10-08 | 上海兖华新材料科技有限公司 | A kind of papermaking enhancing starch and preparation method thereof |
-
2001
- 2001-11-27 CN CN 01131573 patent/CN1352196A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1990392B (en) * | 2005-12-07 | 2011-04-06 | 中国科学院成都有机化学有限公司 | High substitution quaternary ammonium cationic starch flocculating agent and method for synthesizing same |
| CN100484961C (en) * | 2006-07-28 | 2009-05-06 | 武汉科技学院 | Irradition initiating process for preparing cationic starch |
| CN101759880B (en) * | 2010-01-13 | 2013-01-30 | 广东省造纸研究所 | Method for preparing amphiprotic starch solution for papermaking |
| CN102827294A (en) * | 2012-09-21 | 2012-12-19 | 山东农业大学 | Method for producing cationic starch by using homogeneous phase drying method |
| CN103012613A (en) * | 2012-12-06 | 2013-04-03 | 青岛利邦达海洋科技有限公司 | Preparation method for cationic polysaccharide tamarind |
| CN103012613B (en) * | 2012-12-06 | 2016-04-06 | 青岛利邦达海洋科技有限公司 | A kind of preparation method of cationic polysaccharide tamarind |
| CN104945523A (en) * | 2015-07-08 | 2015-09-30 | 广东汇美淀粉科技有限公司 | Environment-friendly cation starch flocculant and preparing method thereof |
| CN106188319A (en) * | 2016-07-13 | 2016-12-07 | 广西梧州市明阳生化科技有限公司 | A kind of composite modified starch |
| CN110305230A (en) * | 2018-03-20 | 2019-10-08 | 上海兖华新材料科技有限公司 | A kind of papermaking enhancing starch and preparation method thereof |
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