CN86104811A - Soluble polyvinyl acetals adhesive - Google Patents
Soluble polyvinyl acetals adhesive Download PDFInfo
- Publication number
- CN86104811A CN86104811A CN86104811.3A CN86104811A CN86104811A CN 86104811 A CN86104811 A CN 86104811A CN 86104811 A CN86104811 A CN 86104811A CN 86104811 A CN86104811 A CN 86104811A
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- China
- Prior art keywords
- water
- caking agent
- polyvinyl alcohol
- acetalization
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
A kind of novel polyethylene acetal class aqueous adhesive is a solvent with water, is the product of polyvinyl alcohol and dialdehyde reaction.This caking agent is neutral transparent liquid, nontoxic, tasteless, do not contain any additives, temperature resistant range (40～150 ℃) and better waterproof that broad is arranged, successfully overcome existing acetals caking agent, the degree of acetalization height is water insoluble, non-water-tight again shortcoming behind the degree of acetalization low filming, and raw material sources are wide, produce simply, of many uses, material of construction, metal, woollen goods, cloth, wood, paper etc. all there are sticking power and bonding force preferably.
Description
The present invention relates to a kind of soluble polyvinyl acetals adhesive and preparation method thereof.
Existing polyvinylacetal caking agent, mostly with monoaldehyde as raw material.Though this type of caking agent has hardness height, electrical insulating property is good, winter hardiness is strong advantage, above-mentioned acetal is water insoluble when degree of acetalization is high, only is dissolved in organic solvent; Though degree of acetalization is low water-soluble, again can not waterproof after the film forming, bring inconvenience to use.
Aqueous adhesive of the present invention is the reaction product of polyvinyl alcohol and dialdehyde, and the existing linear structure of its molecular structure also has reticulated structure; Not only contain the hydrophilic radical water soluble, and have water-repellancy after the film forming.
Novel polyethylene acetal class aqueous adhesive is solvent with water, polyvinyl alcohol and oxalic dialdehyde ratio at 6: 1～7: 1, can with the water infinite dilution.During making, with polyvinyl alcohol in water all after the dissolving, remain on 95 ℃ about 30 minutes, be cooled to 55 ℃ and slowly drip oxalic dialdehydes, reaction is 90 minutes under 85～90 ℃ temperature.
Novel polyethylene acetal class aqueous adhesive is neutral transparent liquid, and is nontoxic, tasteless, energy normal temperature self-drying film forming, and glued membrane is insoluble to normal-temperature water after doing.Except that having excellent waterproofness, also have the characteristics of chemical reagent such as acid-and base-resisting, acetone, ethanol, oils.Temperature resistant range-40～150 ℃.This caking agent use range is wide, and material of construction, metal, woollen goods, cloth, wood, paper product etc. are all had sticking power and bonding force preferably.After tested, the rotary viscosity of this aqueous adhesive can be 700 centipoises, uses the bonding material of this caking agent, and after differing temps and long-time immersion oven dry, the shearing resistance of its interface is about two times of polyvinyl acetate (PVA) (white glues).
This caking agent raw material sources are wide, do not need any additives, and making method are simple.
Claims (4)
1, a kind of is the neutral clear aqueous caking agent of solvent with water, it is characterized in that being raw material with polyvinyl alcohol and oxalic dialdehyde only, polyvinyl alcohol and oxalic dialdehyde weight ratio at 6: 1～7: 1, can with the water infinite dilution.
2, the making method of the said caking agent of claim 1 is characterized in that polyvinyl alcohol all is dissolved in water, remain on 95 ℃ about 30 minutes.
3,, it is characterized in that oxalic dialdehyde will slowly drip when polyvinyl alcohol solution is cooled to 55 ℃ according to the making method of the said caking agent of claim 2.
4, according to the making method of claim 2 or 3 said caking agents, it is characterized in that adding after the oxalic dialdehyde, reaction is 90 minutes under 85 ℃～90 ℃ temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86104811 CN1008528B (en) | 1986-07-19 | 1986-07-19 | Soluble polyvinyl acetals adhesive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86104811 CN1008528B (en) | 1986-07-19 | 1986-07-19 | Soluble polyvinyl acetals adhesive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN86104811A true CN86104811A (en) | 1988-02-17 |
| CN1008528B CN1008528B (en) | 1990-06-27 |
Family
ID=4802609
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86104811 Expired CN1008528B (en) | 1986-07-19 | 1986-07-19 | Soluble polyvinyl acetals adhesive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1008528B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102676089A (en) * | 2012-04-17 | 2012-09-19 | 青阳县真信涂料化工有限责任公司 | Polyvinyl acetal adhesive without free formaldehyde release and preparation method of polyvinyl acetal adhesive |
| CN103059486A (en) * | 2012-12-03 | 2013-04-24 | 云南云天化股份有限公司 | Manufacturing method of water-resistant polyvinyl alcohol film |
-
1986
- 1986-07-19 CN CN 86104811 patent/CN1008528B/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102676089A (en) * | 2012-04-17 | 2012-09-19 | 青阳县真信涂料化工有限责任公司 | Polyvinyl acetal adhesive without free formaldehyde release and preparation method of polyvinyl acetal adhesive |
| CN102676089B (en) * | 2012-04-17 | 2016-03-23 | 青阳县真信涂料化工有限责任公司 | A kind of JSF stick without free formaldehyde release and preparation method thereof |
| CN103059486A (en) * | 2012-12-03 | 2013-04-24 | 云南云天化股份有限公司 | Manufacturing method of water-resistant polyvinyl alcohol film |
| CN103059486B (en) * | 2012-12-03 | 2016-03-02 | 云南云天化股份有限公司 | The manufacture method of water-resistant polyvinyl alcohol film |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1008528B (en) | 1990-06-27 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C13 | Decision | ||
| C14 | Grant of patent or utility model | ||
| C19 | Lapse of patent right due to non-payment of the annual fee |