CN104559831A - Modified starch adhesive for coating - Google Patents
Modified starch adhesive for coating Download PDFInfo
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- CN104559831A CN104559831A CN201310488694.3A CN201310488694A CN104559831A CN 104559831 A CN104559831 A CN 104559831A CN 201310488694 A CN201310488694 A CN 201310488694A CN 104559831 A CN104559831 A CN 104559831A
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Abstract
An embodiment of the invention discloses a modified starch adhesive for coating. The modified starch adhesive comprises components in percentage by mass as follows: 25%-45% of corn starch, 5%-8% of a 30% sodium hydroxide solution, 0.5%-2% of a 30% hydrogen peroxide solution, 0.05%-0.4% of borax, 3%-8% of polyvinyl alcohol, 5%-10% of epichlorohydrin, 0.2%-0.4% of a catalyst and the balance of water. The modified starch adhesive takes corn starch as the raw material, is prepared after chemical modification, can be used for coating copper printing paper, and has the advantages of easiness in obtaining of raw materials and low cost.
Description
Technical field
The present invention relates to chemical field, particularly relate to a kind of manufacture be coated with modified starch adhesive.
Background technology
Starch is by glucose unit with the form of α-glucosides, and a kind of irreducibility polyhydroxy substance be combined into by Isosorbide-5-Nitrae, molecular formula is C
6h
10o
5, be the white powder of no color or smell, starch and hydrolyzate glucose thereof are also important industrial raw material, and can produce the organic compound such as alcohol, aldehyde, ketone, acid, ester and ether, wherein many is important industrial chemicals.
Starch resource enriches, and low price, easy to use, available other materials carries out modification again.By the source of post kind, starch can be divided into W-Gum, potato starch, tapioca (flour), sweet potato starch, Starch rice etc., and their form, composition, granular size, the polymerization degree and gelatinization point are all different.Starch is mainly made up of amylose starch and amylopectin two portions.Amylose starch is linear structure, and in starch, content is about 10% ~ 30%, and energy is water-soluble and do not become pasty state, meets iodine in blue.Amylopectin is highly branched, insoluble in cold water, and expanding with hot water effect pool forms pasty state, and meeting iodine is red-purple.
Enamelled paper is the coating with the modulation such as white pigment and tackiness agent, coats the surface of copper coin body paper, a kind of converted paper made through supercalendering.Papery is pure white, smooth surface, for the printing of polychrome or monochromatic copperplate and senior hectograph.And be used as the tackiness agent of enamelled paper coating, domestic main use casein food grade and import treated starch.
Summary of the invention
Embodiment of the present invention technical problem to be solved is, provides a kind of coating modified starch adhesive, comprises following component in mass ratio:
W-Gum 25% ~ 45%
Sodium hydroxide (30% solution) 5% ~ 8%
Hydrogen peroxide (30% solution) 0.5% ~ 2%
Borax 0.05% ~ 0.4%
Polyvinyl alcohol 3% ~ 8%
Epoxy road propane 5% ~ 10%
Catalyzer 0.2% ~ 0.4%
Water adds to 100%.
In order to solve the problems of the technologies described above, embodiments provide a kind of technique preparing described coating modified starch adhesive, comprising the following steps:
A () first adds water and starch in the reactor of belt stirrer;
B () adds sodium hydroxide solution after stirring and water being mixed completely with starch, make solution pH value be 8 ~ 9;
C () adds hydrogen peroxide, and temperature is risen to 50 ~ 60 DEG C and carry out oxidizing reaction;
D () adds epoxy road propane and catalyzer carries out etherification reaction;
E () adds all the other raw materials, stir discharging packaging after 20 minutes.
Further, the time of described oxidizing reaction is 15 ~ 20 minutes.
Further, the time of described etherification reaction is 7 ~ 9 hours, along with etherification reaction carries out, the viscosity degradation of glue, epoxy chloropropane add-on very little time, etherificate is not enough, and hydroxypropyl substitution value is low, and product viscosity is higher; Otherwise when add-on is too much, viscosity stability can decline.
Implement the present invention, there is following beneficial effect:
The present invention is raw material with W-Gum, makes after chemical modification, can be used as enamelled paper coating and sticks with glue agent, have the advantage that starting material are easy to get, price is low.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below the present invention is described in further detail.
Embodiment
W-Gum 40g
Sodium hydroxide (30% solution) 7g
Hydrogen peroxide (30% solution) 1g
Borax 0.3g
Polyvinyl alcohol 6g
Epoxy road propane 8g
Catalyzer 0.3g
Water adds to 100g.
Water and starch is first added in the reactor of belt stirrer.
Stirring adds sodium hydroxide solution after water is mixed completely with starch, makes solution pH value be 9.
Add hydrogen peroxide, and temperature is risen to 55 DEG C and carry out oxidizing reaction.
Add epoxy road propane and catalyzer carries out etherification reaction.
Add all the other raw materials, stir discharging packaging after 20 minutes.
Further, the time of described oxidizing reaction is 18 minutes.
Further, the time of described etherification reaction is 8 hours.
Above disclosedly be only a kind of preferred embodiment of the present invention, certainly can not limit the interest field of the present invention with this, therefore according to the equivalent variations that the claims in the present invention are done, still belong to the scope that the present invention is contained.
Claims (4)
1. a coating modified starch adhesive, is characterized in that, comprises following component in mass ratio:
W-Gum 25% ~ 45%
Sodium hydroxide (30% solution) 5% ~ 8%
Hydrogen peroxide (30% solution) 0.5% ~ 2%
Borax 0.05% ~ 0.4%
Polyvinyl alcohol 3% ~ 8%
Epoxy road propane 5% ~ 10%
Catalyzer 0.2% ~ 0.4%
Water adds to 100%.
2. prepare a technique for coating modified starch adhesive described in claim 1, it is characterized in that, comprise the following steps:
A () first adds water and starch in the reactor of belt stirrer;
B () adds sodium hydroxide solution after stirring and water being mixed completely with starch, make solution pH value be 8 ~ 9;
C () adds hydrogen peroxide, and temperature is risen to 50 ~ 60 DEG C and carry out oxidizing reaction;
D () adds epoxy road propane and catalyzer carries out etherification reaction;
E () adds all the other raw materials, stir discharging packaging after 20 minutes.
3. technique according to claim 2, is characterized in that, the time of described oxidizing reaction is 15 ~ 20 minutes.
4. technique according to claim 2, is characterized in that, the time of described etherification reaction is 7 ~ 9 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310488694.3A CN104559831A (en) | 2013-10-18 | 2013-10-18 | Modified starch adhesive for coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310488694.3A CN104559831A (en) | 2013-10-18 | 2013-10-18 | Modified starch adhesive for coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104559831A true CN104559831A (en) | 2015-04-29 |
Family
ID=53076929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310488694.3A Pending CN104559831A (en) | 2013-10-18 | 2013-10-18 | Modified starch adhesive for coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104559831A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105481992A (en) * | 2016-01-19 | 2016-04-13 | 南通通地生物技术有限公司 | Composite modified starch for paper making |
| CN106316698A (en) * | 2016-08-28 | 2017-01-11 | 天长市天兴园林绿化工程有限公司 | Inorganic-organic compound fertilizer for garden flowers |
| CN106365795A (en) * | 2016-08-28 | 2017-02-01 | 天长市天兴园林绿化工程有限公司 | Compound coated slow-release fertilizer for garden planting and method for preparing compound coated slow-release fertilizer |
| CN107254271A (en) * | 2017-06-29 | 2017-10-17 | 荆州市九天化工科技有限公司 | A kind of production technology of starch base cigarette overlapping glue |
| CN107384248A (en) * | 2017-08-16 | 2017-11-24 | 成都市九华义远包装有限公司 | Cardboard adhesive based on starch and preparation method thereof |
| CN111605284A (en) * | 2020-05-26 | 2020-09-01 | 戴武军 | Preparation method of novel bamboo leaf filament woven composite material |
-
2013
- 2013-10-18 CN CN201310488694.3A patent/CN104559831A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105481992A (en) * | 2016-01-19 | 2016-04-13 | 南通通地生物技术有限公司 | Composite modified starch for paper making |
| CN106316698A (en) * | 2016-08-28 | 2017-01-11 | 天长市天兴园林绿化工程有限公司 | Inorganic-organic compound fertilizer for garden flowers |
| CN106365795A (en) * | 2016-08-28 | 2017-02-01 | 天长市天兴园林绿化工程有限公司 | Compound coated slow-release fertilizer for garden planting and method for preparing compound coated slow-release fertilizer |
| CN107254271A (en) * | 2017-06-29 | 2017-10-17 | 荆州市九天化工科技有限公司 | A kind of production technology of starch base cigarette overlapping glue |
| CN107384248A (en) * | 2017-08-16 | 2017-11-24 | 成都市九华义远包装有限公司 | Cardboard adhesive based on starch and preparation method thereof |
| CN111605284A (en) * | 2020-05-26 | 2020-09-01 | 戴武军 | Preparation method of novel bamboo leaf filament woven composite material |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150429 |
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| WD01 | Invention patent application deemed withdrawn after publication |