CN101519456B - Method for preparing coating starch - Google Patents
Method for preparing coating starch Download PDFInfo
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- CN101519456B CN101519456B CN2009100381407A CN200910038140A CN101519456B CN 101519456 B CN101519456 B CN 101519456B CN 2009100381407 A CN2009100381407 A CN 2009100381407A CN 200910038140 A CN200910038140 A CN 200910038140A CN 101519456 B CN101519456 B CN 101519456B
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Abstract
The invention provides a method for preparing coating starch. The method comprises the following steps: (1) oxidation modification, in which, after 200 weight portions of starch and 300 weight portions of distilled water are evenly mixed, the starch and the distilled water are moved into a three-neck flask, pH value of starch slurry is adjusted to be 9.8-10.0 by a 3 percent sodium hydroxide solution, and sodium hypochlorite solution accounting for 15 to 20 percent of the starch by weight is added into the starch slurry to perform an oxidation reaction at room temperature for 2 to 4 hours; (2) crosslinking modification, in which, the pH value of the starch slurry is adjusted to be 11.0-11.2 by the 3 percent sodium hydroxide solution, and sodium trimetaphosphate accounting for 0.5 to 1 percent of the starch by weight is added into the starch slurry to perform a crosslinking reaction at room temperature for 0.5 to 2 hours; (3) oxidation modification, in which, sodium hypochlorite solutionaccounting for 15 to 20 percent of the starch by weight is added into the starch slurry to perform the oxidation reaction at room temperature for 2 to 4 hours, and chlorine is removed; and (4) the pH value of the starch slurry is adjusted to be 6.2-6.3 by a dilute hydrochloric acid solution, and the coating starch finished product can be obtained through dehydrating, drying and crushing. The meth od has the advantages that the coating starch prepared by the method can replace about 30 percent of latex, improve quality of paper making, reduce cost, and contribute to environmental protection.
Description
Technical field
The preparation method of a kind of coating starch of the present invention relates to the preparation method of starch for paper-making.
Background technology
Paper industry generally adopts Sumstar 190, enzyme converted starch as auxiliary adhesive now, and there is poor heat resistance in these starch, and water-retentivity is bad, the relatively poor deficiency that waits of paint flow sex change, and for overcoming above-mentioned deficiency, people constantly develop new starch and preparation method thereof.
Summary of the invention
Technical problem to be solved by this invention is exactly the preparation method that a kind of coating starch is provided in order to overcome above-mentioned deficiency.Advantages such as the present invention adopts oxidation-crosslinked-oxidative deformation to prepare coating starch, and this starch has good heat resistance, and water-retentivity is good, the paint flow sex change is good.
The present invention adopts following technical scheme.
A kind of preparation method of coating starch comprises under the parts by weight and preparation process of used material as described below, material:
1.. oxidative deformation: with parts by weight is that 200 parts starch joins in 300 parts of distilled water, move in the there-necked flask after stirring, with concentration is that the pH value that 3% sodium hydroxide solution is regulated starch slurry is 9.8～10.0, add the chlorine bleach liquor, add-on is 15～20% of a starch weight, oxidizing reaction is 2～4 hours under the room temperature, obtains starch slurry A;
2.. crosslinked sex change: with concentration is that the pH value that 3% sodium hydroxide solution is regulated starch slurry A is 11.0～11.2, adds Trisodium trimetaphosphate, and add-on is 0.5～1% of a starch weight, carries out crosslinking reaction under the room temperature 0.5～2 hour, obtains starch slurry B;
3.. oxidative deformation: add the chlorine bleach liquor in starch slurry B, add-on is 15～20% of a starch weight, and oxidizing reaction is 2～4 hours under the room temperature, and dechlorination obtains starch slurry C;
4.. make finished product: the pH value of regulating the starch slurry C after oxidation-crosslinking-oxidization sex change with dilute hydrochloric acid solution is 6.2～6.3, through dehydration, dry, pulverize and obtain the coating starch finished product.
Step 1. described chlorine bleach liquor's add-on is 17% or 20% of a starch weight, and oxidizing reaction is 2 hours or 3 hours under the room temperature.
The step 2. add-on of described Trisodium trimetaphosphate is 0.8% or 1% of a starch weight, and the time of carrying out crosslinking reaction under the room temperature is 1 hour or 1.5 hours.
Step 3. described chlorine bleach liquor's add-on is 17% or 20% of a starch weight, and the time of oxidizing reaction is 2 hours or 3 hours under the room temperature.
The invention has the advantages that: use the coating starch of the inventive method preparation, have advantages such as good heat resistance, water-retentivity is good, the paint flow sex change is good, be used for paper industry; alternative about 30% latex; improve the papermaking quality, it is about 20% to reduce the glue paste cost, helps environment protection.
Embodiment
Embodiment one:
A kind of preparation method of coating starch comprises under the parts by weight and preparation process of used material as described below, material:
1.. oxidative deformation: with parts by weight is that 200 parts starch joins in 300 parts of distilled water, move in the there-necked flask after stirring, with concentration is that the pH value that 3% sodium hydroxide solution is regulated starch slurry is 9.8～10.0, add the chlorine bleach liquor, add-on is 20% of a starch weight, oxidizing reaction is 2 hours under the room temperature, obtains starch slurry A;
2.. crosslinked sex change: with concentration is that the pH value that 3% sodium hydroxide solution is regulated starch slurry A is 11.0～11.2, adds Trisodium trimetaphosphate, and add-on is 1% of a starch weight, carries out crosslinking reaction under the room temperature 1 hour, obtains starch slurry B;
3.. oxidative deformation: add the chlorine bleach liquor in starch slurry B, add-on is 20% of a starch weight, and oxidizing reaction is 2 hours under the room temperature, and dechlorination obtains starch slurry C;
4.. make finished product: the pH value of regulating the starch slurry C after oxidation-crosslinking-oxidization sex change with dilute hydrochloric acid solution is 6.2～6.3, through dehydration, dry, pulverize and obtain the coating starch finished product.
Embodiment two:
A kind of preparation method of coating starch comprises under the parts by weight and preparation process of used material as described below, material:
1.. oxidative deformation: with parts by weight is that 200 parts starch joins in 300 parts of distilled water, move in the there-necked flask after stirring, with concentration is that the pH value that 3% sodium hydroxide solution is regulated starch slurry is 9.8～10.0, add the chlorine bleach liquor, add-on is 17% of a starch weight, oxidizing reaction is 3 hours under the room temperature, obtains starch slurry A;
2.. crosslinked sex change: with concentration is that the pH value that 3% sodium hydroxide solution is regulated starch slurry A is 11.0～11.2, adds Trisodium trimetaphosphate, and add-on is 0.8% of a starch weight, carries out crosslinking reaction under the room temperature 1.5 hours, obtains starch slurry B;
3.. oxidative deformation: add the chlorine bleach liquor in starch slurry B, add-on is 17% of a starch weight, and oxidizing reaction is 3 hours under the room temperature, and dechlorination obtains starch slurry C;
4.. make finished product: the pH value of regulating the starch slurry C after oxidation-crosslinking-oxidization sex change with dilute hydrochloric acid solution is 6.2～6.3, through dehydration, dry, pulverize and obtain the coating starch finished product.
Claims (4)
1. the preparation method of a coating starch is characterized in that: comprise under the parts by weight and preparation process of used material as described below, material:
1.. oxidative deformation: with parts by weight is that 200 parts starch joins in 300 parts of distilled water, move in the there-necked flask after stirring, with concentration is that the pH value that 3% sodium hydroxide solution is regulated starch slurry is 9.8～10.0, add the chlorine bleach liquor, add-on is 15～20% of a starch weight, oxidizing reaction is 2～4 hours under the room temperature, obtains starch slurry A;
2.. crosslinked sex change: with concentration is that the pH value that 3% sodium hydroxide solution is regulated starch slurry A is 11.0～11.2, the adding Trisodium trimetaphosphate, add-on is 0.5～1% of a starch weight, carries out crosslinking reaction under the room temperature 0.5～2 hour, obtains starch slurry B;
3.. oxidative deformation: add the chlorine bleach liquor in starch slurry B, add-on is 15～20% of a starch weight, and oxidizing reaction is 2～4 hours under the room temperature, and dechlorination obtains starch slurry C;
4.. make finished product: the pH value of regulating the starch slurry C after oxidation-crosslinking-oxidization sex change with dilute hydrochloric acid solution is 6.2～6.3, through dehydration, dry, pulverize and obtain the coating starch finished product.
2. the preparation method of a kind of coating starch according to claim 1, it is characterized in that: step 1. described chlorine bleach liquor's add-on is 17% or 20% of a starch weight, oxidizing reaction is 2 hours or 3 hours under the room temperature.
3. the preparation method of a kind of coating starch according to claim 1, it is characterized in that: the step 2. add-on of described Trisodium trimetaphosphate is 0.8% or 1% of a starch weight, the time of carrying out crosslinking reaction under the room temperature is 1 hour or 1.5 hours.
4. the preparation method of a kind of coating starch according to claim 1, it is characterized in that: step 3. described chlorine bleach liquor's add-on is 17% or 20% of a starch weight, the time of oxidizing reaction is 2 hours or 3 hours under the room temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100381407A CN101519456B (en) | 2009-03-24 | 2009-03-24 | Method for preparing coating starch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100381407A CN101519456B (en) | 2009-03-24 | 2009-03-24 | Method for preparing coating starch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101519456A CN101519456A (en) | 2009-09-02 |
| CN101519456B true CN101519456B (en) | 2011-05-18 |
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| CN2009100381407A Expired - Fee Related CN101519456B (en) | 2009-03-24 | 2009-03-24 | Method for preparing coating starch |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101704896B (en) * | 2009-12-22 | 2011-07-20 | 中南林业科技大学 | Method for preparing crosslinking-oxidization jointly modified starch |
| CN101967290B (en) * | 2010-10-11 | 2011-11-30 | 内蒙古大学 | Method for preparing board by using oxidized starch adhesive and waste plant fiber |
| CN103215852B (en) * | 2013-03-28 | 2015-07-15 | 杭州澳沙科技有限公司 | Preparation method of starch glue for coating |
| CN106243234B (en) * | 2016-07-25 | 2019-03-26 | 山东熙来淀粉有限公司 | A kind of polynary coating starch and its production technology |
| CN108047341A (en) * | 2017-12-19 | 2018-05-18 | 东莞东美食品有限公司 | A kind of preparation method of rubber gloves interleaving agent converted starch |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1044662A (en) * | 1989-02-02 | 1990-08-15 | 李艺 | A kind of technology of producing oxidized starch glue |
| CN1317017A (en) * | 1998-09-11 | 2001-10-10 | 马铃薯及衍生产品合作销售生产阿韦贝公司 | Oxidation of starch |
| EP1015497B1 (en) * | 1997-09-10 | 2006-08-30 | Ciba SC Holding AG | Modified starch |
-
2009
- 2009-03-24 CN CN2009100381407A patent/CN101519456B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1044662A (en) * | 1989-02-02 | 1990-08-15 | 李艺 | A kind of technology of producing oxidized starch glue |
| EP1015497B1 (en) * | 1997-09-10 | 2006-08-30 | Ciba SC Holding AG | Modified starch |
| CN1317017A (en) * | 1998-09-11 | 2001-10-10 | 马铃薯及衍生产品合作销售生产阿韦贝公司 | Oxidation of starch |
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| CN101519456A (en) | 2009-09-02 |
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