CN1117052A - Dodecene modifier starch and its preparing method - Google Patents
Dodecene modifier starch and its preparing method Download PDFInfo
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- CN1117052A CN1117052A CN 94115807 CN94115807A CN1117052A CN 1117052 A CN1117052 A CN 1117052A CN 94115807 CN94115807 CN 94115807 CN 94115807 A CN94115807 A CN 94115807A CN 1117052 A CN1117052 A CN 1117052A
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Abstract
Dodecene starch as a filler has biological degradation and strong binding force with polythene, which raises the mechanical performance of starchy polythene film. The side product is not only used as plastics filler but also be used as plastics filler, in textile, papermaking, medical, chemical and other industries.
Description
The invention belongs to starch, particularly a kind of chemically modified starch.
Starch has a purposes widely industrial, as on paper-making industry as sizing agent, in polymer industry, be used as ground film additive or the like.Along with the develop rapidly of macromolecular material industry, the synthetic macromolecular compound that more and more is difficult to degrade is abandoned in the natural material cycle.This not perishable environmental pollution that is caused with " specific refuse " of burning has become serious social effects of pollution.According to the statistics made by the departments concerned, soil compaction, the soil property that causes owing to the accumulation of indissoluble discarded mulch film degenerates to offset and uses the economic benefit that mulch film brought.For this reason, exploitation degradable polymer material has become heat subject in recent years.So-called Devlopment of Degradable Plastics is comparatively sophisticated at present to be to add starch or modification starch and other auxiliary agent to make in ordinary resin.Filling has the numerous species type with starch, as ative starch, physical modification starch or chemically modified starch etc.Chemically modified starch also has many kinds, as the acid property handed over starch, dialdehyde starch, hypochlorite oxidation starch, cross-linking starch, graft starch or the like.These starch have characteristics separately, but shortcoming are can not reach with polyethylene consistency and free-flowing property are preferably arranged after handling through certain modification.In addition, at present glue used in paper-making mostly adopts Sumstar 190, tapioca (flour), and it is all not ideal enough to use paper strength and water tolerance that above-mentioned sizing agent produces.
The dodecene modifier starch that the object of the present invention is to provide a kind of and resin to have consistency and free-flowing property preferably and can improve paper quality, and its preparation method is provided.
Dodecene modifier starch of the present invention, its general formula is:
Its physicals is: product appearance is tenderly white toner end, and feel is smooth, fine and smooth, moisture 2-15%, ash content 0.35-0.6%, 300 order transmitance 98-99.6%, pH value 6.0-7.5.
The preparation method of above-mentioned dodecene modifier starch, carry out as follows:
(a) with starch and water with 1: the ratio preparation starch solution of 1.2-1.5, control its temperature and be not higher than 50 ℃, stir,
(b) slowly add the laurylene Succinic anhydried that accounts for amount of starch 2-2.5%, stir,
(c) add the alkaline solution that accounts for amount of starch 0.2-0.5%, make the pH value of reaction system be controlled at alkaline range 8.0-10.0, reacted 2～4 hours,
(d) dewater, dry, sieve, get finished product.
Ative starch of the present invention can be W-Gum or potato starch.
Among the preparation method of dodecene modifier starch of the present invention, the alkali that is used to adjust the system pH value can be NaOH.The prepared dodecene modifier starch of aforesaid method can be used as glue used in paper-making.
In order to increase the flowability of starch, can in reaction system, add Tai-Ace S 150.In the method for the invention, after C step, can increase by a step again and promptly slowly add the alum liquor that accounts for amount of starch 1-5%, and to adjust pH value with alkali be 6.5-7.5, and then dehydration, oven dry, filter, get product.Have fabulous free-flowing property by the prepared dodecene modifier starch of aforesaid method, can be used as the resin filled with starch.
The present invention is raw materials used to be commercially available, and all can adopt technical grade.
The present invention is directed to existing shortcoming of filling, succeeded in developing dodecene modifier starch with modified starch.Dodecene modifier starch is on the grape unit of starch, with laurylene group part substituted hydroxy.Because laurylene is a hydrophobicity long-chain shape group, to the PE resin similar structure is arranged, its introducing strengthens the consistency of starch and resin as set up one " bridge " between starch and resin greatly.Therefore, as filled with starch, both kept its biological degradability, strengthened again and poly bonding force, thereby improved the mechanical property of starch polyethylene film with laurylene starch.And the good free-flowing property that it possessed, having overcome in the blown film process deposition on the filtering net again is detained drawback, makes that the technical barrier that serialization is produced in the film-blowing process is solved.This product not only can be used as the plastics filling and uses starch, and can be used for many industries such as textile sizing, paper-making sizing, medication chemistry.Particularly in the application of paper-making industry, laurylene starch is compared with Sumstar 190, tapioca (flour) as paper internal sizing agent and Surface Size, can increase substantially strength of paper and water tolerance, is a kind of good new type of paper sizing agent.
Embodiment 1
In the 3KL reactor, add 1500L water, the control temperature of reaction system is about 40 ℃, when stirring, add after 1 ton of starch stirs well, slowly add 20L laurylene Succinic anhydried, stir half an hour, it is uniformly dispersed, adds 2.0%NaOH solution continuously, the pH value of reaction system is controlled at about 8.0, after reacting about 3 hours, pacifying adds 3%Al slowly
2(SO
4)
3150L stirs half an hour, and adjusting reacting system PH value with NaOH is 6.5-7.5, with whizzer starch is dewatered, and makes the starch drying by drying plant again, crosses 300 mesh sieves, is finished product after the packing.This product appearance is a white powder, and feel is smooth, fine and smooth, no moisture absorption caking phenomenon.After measured: moisture content 1.8% ash content≤0.45%, 300 order transmitance is not less than 99.0%, and pH value 7.0, repose angle a are 19 °.This product can be used as the filled with starch of resin.
In the above-described embodiments, the mensuration of physical index repose angle α is such: with the starch sample of 10 gram oven dry, Sui Sui flows into one and has the funnel of certain altitude with smooth glass, because the free-flowing property of starch, just can make the starch of stream on sheet glass form a starch cone, the high h and the radius r calculating of measuring cone with ruler can draw the α angle.Measurement result is got 11 mean value.
Embodiment 2
In the 3KL reactor, add 1500L water, the control temperature of reaction system is about 40 ℃, at stir about simultaneously, add after 1 ton of starch stirs well, slowly add 20L laurylene Succinic anhydried, stir half an hour, it is uniformly dispersed, adds 2.0% NaOH solution continuously, make the pH value of reaction system be controlled at about 8.0 reactions after about 3 hours, adjusting PH with rare Hcl is 3.0, kept 2 hours in this acid system, adjusting system PH with NaOH again is 6.5-7.5, dehydrates then, cross 100 mesh sieves, be finished product after the packing.This product is a white powder, moisture content 10.9%, and ash≤0.45%, pH value are 7.0, viscosity is 24 cp (5% sticks with paste liquid).This product is as paper internal sizing agent and Surface Size, raising strength of paper and water tolerance that can be by a relatively large margin.
Claims (5)
1. dodecene modifier starch is characterized in that general formula is:
2. one kind prepares the method for dodecene modifier starch according to claim 1, connects following steps and carries out:
(a) with starch and water with 1: the ratio preparation starch solution of 1.2-1.5, control its temperature at 30-50 ℃, stir,
(b) account for the about laurylene Succinic anhydried of amount of starch 2-2.5% peaceful the adding slowly, stir,
(c) add the alkaline solution that accounts for amount of starch 0.2-0.5%, make the pH value of reaction system be controlled at 8.0-10.0, reacted 2～4 hours,
(d) dewater, dry, sieve, get finished product.
3. method as claimed in claim 2 is characterized in that said starch can be W-Gum or potato starch.
4. method as claimed in claim 2 is characterized in that said alkali can be sodium hydroxide.
5. method as claimed in claim 2 is characterized in that can increasing a step and promptly slowly add the alum liquor that accounts for amount of starch 1-5% in reactant after (c) step, and is 6.5-7.5 with alkaline solution adjustment system pH value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94115807A CN1039232C (en) | 1994-08-18 | 1994-08-18 | Dodecene modifier starch and its preparing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94115807A CN1039232C (en) | 1994-08-18 | 1994-08-18 | Dodecene modifier starch and its preparing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1117052A true CN1117052A (en) | 1996-02-21 |
| CN1039232C CN1039232C (en) | 1998-07-22 |
Family
ID=5037639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94115807A Expired - Fee Related CN1039232C (en) | 1994-08-18 | 1994-08-18 | Dodecene modifier starch and its preparing method |
Country Status (1)
| Country | Link |
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| CN (1) | CN1039232C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101880335B (en) * | 2010-02-03 | 2012-05-23 | 内蒙古奈伦农业科技股份有限公司 | Method for preparing modified starch by oxidation and succinic anhydride esterification |
| CN103159863A (en) * | 2011-12-15 | 2013-06-19 | 财团法人工业技术研究院 | Enteric and intestinal enzyme decomposable material and preparation method thereof |
| US20200199053A1 (en) * | 2018-12-21 | 2020-06-25 | Shin-Etsu Chemical Co., Ltd. | Processes for preparing 4-methyl-5-nonanone and 4-methyl-5-nonanol |
| US10882805B2 (en) | 2018-12-21 | 2021-01-05 | Shin-Etsu Chemical Co., Ltd. | Processes for preparing 4-methyl-5-nonanone and 4-methyl-5-nonanol |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2517097A (en) * | 1946-02-08 | 1950-08-01 | Rhodiaceta | Manufacture of cellulose esters |
| EP0204353B1 (en) * | 1985-05-08 | 1989-05-31 | Akzo N.V. | Process for the preparation of an ester from starch and a monocarboxylic acid, and a composition based on the starch ester thus prepared |
| US5321132A (en) * | 1992-12-23 | 1994-06-14 | National Starch And Chemical Investment Holding Corporation | Method of preparing intermediate DS starch esters in aqueous solution |
-
1994
- 1994-08-18 CN CN94115807A patent/CN1039232C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101880335B (en) * | 2010-02-03 | 2012-05-23 | 内蒙古奈伦农业科技股份有限公司 | Method for preparing modified starch by oxidation and succinic anhydride esterification |
| CN103159863A (en) * | 2011-12-15 | 2013-06-19 | 财团法人工业技术研究院 | Enteric and intestinal enzyme decomposable material and preparation method thereof |
| US8957202B2 (en) | 2011-12-15 | 2015-02-17 | Industrial Technology Research Institute | Enterosoluble and intestinal-enzyme-biodegradable materials and method for preparing the same |
| US20200199053A1 (en) * | 2018-12-21 | 2020-06-25 | Shin-Etsu Chemical Co., Ltd. | Processes for preparing 4-methyl-5-nonanone and 4-methyl-5-nonanol |
| US10882805B2 (en) | 2018-12-21 | 2021-01-05 | Shin-Etsu Chemical Co., Ltd. | Processes for preparing 4-methyl-5-nonanone and 4-methyl-5-nonanol |
| US10882806B2 (en) * | 2018-12-21 | 2021-01-05 | Shin-Etsu Chemical Co., Ltd. | Processes for preparing 4-methyl-5-nonanone and 4-methyl-5-nonanol |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1039232C (en) | 1998-07-22 |
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