CN102757747B - Aldehyde-free odorless environment-friendly and transparent polyvinyl alcohol (PVA) glue and preparation method thereof - Google Patents
Aldehyde-free odorless environment-friendly and transparent polyvinyl alcohol (PVA) glue and preparation method thereof Download PDFInfo
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- CN102757747B CN102757747B CN201210275985.XA CN201210275985A CN102757747B CN 102757747 B CN102757747 B CN 102757747B CN 201210275985 A CN201210275985 A CN 201210275985A CN 102757747 B CN102757747 B CN 102757747B
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Abstract
The invention relates to aldehyde-free odorless environment-friendly and transparent polyvinyl alcohol (PVA) glue and a preparation method thereof, and can effectively solve the problem of complex technology or containing of harmful substances such as aldehydes in the prior art. The technical scheme includes that the glue is produced by the PVA, water, a modifier and a preservative, wherein, by weight, the PVA accounts for 1-15% of the glue, the modifier accounts for 0.5-10% of the PVA, the preservative accounts for 0.01-0.05% of the PVA and the balance water. The method includes mixing the PVA with the water at a room temperature of 18-25 DEG C, heating up to 85-100 DEG C after evenly stirring, cooling to 45-80 DEG C after completely dissolving, adding in the modifier and modifying for 0.5-2 hours at a temperature of 45-85 DEG C, cooling to the room temperature of 18-25 DEG C, adding in the preservative, and obtaining the glue. According to the PVA glue and the preparation method thereof, the reaction condition is relatively mild, the operation is simple, the glue is aldehyde-free, odorless, transparent, innovative, high in viscosity, low in production cost and prone to industrial production.
Description
Technical field
The present invention relates to chemical field, particularly a kind of without the tasteless environment friendly transparent PVA of aldehyde glue and preparation method thereof.
Background technology
Transparent Wall paper adhesive, for office, transparent glue, label glue etc. are mostly made main raw material with PVA (being polyvinyl alcohol), but majority contains aldehyde like harmful substance matter, also have partial monopoly report without aldehyde PVA glue, but complicated process of preparation.
Chinese patent (CN1280373C) has been reported a kind of modified PVA adhesive, has used hydrophobizing agent A, modifier R, acrylamide or ammonium thiocyanate 10% aqueous sodium hydroxide solution in patent.This patent scheme has advantages of not aldehyde-containing type of environmental protection, but more, the stealthy composition of material used is more numerous and diverse, is not easy to suitability for industrialized production; Chinese patent (CN101445710B) provides a kind of preparation method of cross linking modified PVA environment-friendly watertight tackiness agent, used silicone emulsion, hydrochloric acid, formaldehyde, sodium hydroxide, trimeric cyanamide, urea, oxalic dialdehyde, the material such as aziridine, Kathon CG, this patent contains formaldehyde, oxalic dialdehyde etc. aldehydes, simultaneously complex process.
In existing patent, relate to environmental protection PVA type tackiness agent or complex process or itself and just contain the objectionable impuritiess such as aldehydes, utilize PVA itself to there is good tackiness, it is carried out to modification, and at transparent Wall paper adhesive, for office, the field such as transparent glue, label glue reaches better result of use becomes the key issue of being badly in need of solution.
Summary of the invention
For above-mentioned situation, for solving the defect of prior art, the present invention's object is just to provide a kind of without the tasteless environment friendly transparent PVA of aldehyde glue and preparation method thereof, can effectively solve the problem that prior art processes is complicated or contain the objectionable impuritiess such as aldehydes.
The technical scheme that the present invention solves is, by PVA, water, properties-correcting agent and sanitas, made, wherein, PVA content is the 1-15% of glue weight, modifier content is the 0.5-10% of PVA weight, antiseptic content is the 0.01-0.05% of PVA weight, and surplus is water, wherein, at room temperature 18-25 ℃, PVA is mixed with water, after stirring, be warmed up to 85-100 ℃, after dissolve complete, be cooled to 45-85 ℃, add properties-correcting agent, at 45-85 ℃, modification 0.5-2 hour, be down to room temperature 18-25 ℃, add sanitas to mix, obtain.
Described properties-correcting agent is for reaching the polyvalent alcohol of modified function, and described polyvalent alcohol is 1，2-ethandiol, Glycerin, 1，2，3，4-butantetraol, xylit, 1,2,3,4,5,6-hexan-hexol, the mixture of one or more of 1,2,3,4,5,6,7-volemitol; Described sanitas is boric acid or Whitfield's ointment.
Reaction conditions of the present invention is relatively gentle, simple to operate, without aldehyde, tasteless, transparent, viscosity is high, production cost is low, be easy to suitability for industrialized production, is the innovation on glue.
Embodiment
Below in conjunction with embodiment, the specific embodiment of the present invention is described in further detail.
Embodiment 1
In 1L four-necked bottle, add 368ml water, under stirring, slowly add 32gPVA, at room temperature 18-25 ℃, after stirring, be warmed up to 90 ℃, after dissolve complete, cool to 60 ℃, add properties-correcting agent 1，2-ethandiol 1.28g, at 55-60 ℃, modification 1 hour, be down to room temperature 18-25 ℃, add 0.01g sanitas boric acid, obtain transparent PVA glue.
Embodiment 2
In 1L four-necked bottle, add 384ml water, under stirring, slowly add 16gPVA, at room temperature 18-25 ℃, after stirring, be warmed up to 92 ℃, after dissolve complete, cool to 70 ℃, add properties-correcting agent 1,2,3-glycerol 0.32g, at 65-70 ℃, modification 45 minutes, is down to room temperature 18-25 ℃, add 0.005g sanitas boric acid, obtain transparent PVA glue.
Embodiment 3
In 1L four-necked bottle, add 360ml water, under stirring, slowly add 40gPVA, at room temperature 18-25 ℃, after stirring, be warmed up to 95 ℃, after dissolve complete, cool to 75 ℃, add properties-correcting agent 1,2,3,4,5-pentitol 2.4g, at 70-75 ℃, modification 45 minutes, is down to room temperature 18-25 ℃, add 0.02g sanitas boric acid, obtain transparent PVA glue.
Embodiment 4
In 1L four-necked bottle, add 460ml water, under stirring, slowly add 51gPVA, at room temperature 18-25 ℃, after stirring, be warmed up to 95 ℃, after dissolve complete, cool to 50 ℃, add properties-correcting agent 1,2,3,4,5-pentitol 1.5g, 1,2,3,4-butantetraol 1.5g, at 45-50 ℃, modification 45 minutes, be down to room temperature 18-25 ℃, add 0.025g sanitas Whitfield's ointment, obtain transparent PVA glue.
Embodiment 5
In 1L four-necked bottle, add 484ml water, under stirring, slowly add 20gPVA, at room temperature 18-25 ℃, after stirring, be warmed up to 92 ℃, after dissolve complete, cool to 80 ℃, add properties-correcting agent 1,2,3-glycerol 0.2g, 1,2,3,4,5,6-hexan-hexol 0.3g, at 75-80 ℃, modification 45 minutes, be down to room temperature 18-25 ℃, add 0.006g sanitas Whitfield's ointment, obtain transparent PVA glue.
Embodiment 6
In 1L four-necked bottle, add 468ml water, under stirring, slowly add 36gPVA, at room temperature 18-25 ℃, after stirring, be warmed up to 90 ℃, after dissolve complete, cool to 85 ℃, add properties-correcting agent 1,2-ethylene glycol 1g, 1,2,3,4,5,6,7-volemitol 0.6g, at 80-85 ℃, modification 1 hour, be down to room temperature 18-25 ℃, add 0.015g sanitas Whitfield's ointment, obtain transparent PVA glue.
What the present invention realized is a kind of without the tasteless environment friendly transparent PVA of aldehyde glue, through repetition test meet transparent Wall paper adhesive, the real requirement such as transparent glue, label glue for office, good to paper product cementability, water tolerance is superior, unharmful substance discharges, and belongs to without aldehyde, tasteless, environmental protection, opaque products.The performance index of modified PVA adhesive detect as follows:
| Outward appearance | Water white transparency thickness colloid |
| Viscosity/mPas (30 ℃) | 35000 |
| Solid content/% | 8 |
| PH value | 6-7 |
| Just sticky time/s (30 ℃) | 50 |
| Resistance to normal temperature water-based/h (25 ℃) | 180 |
| Cold-resistant water-based/h (5 ℃) | 260 |
| Shelf lives/month | 12 |
Product of the present invention have reaction conditions relatively gentle, simple to operate, without aldehyde, tasteless, transparent, viscosity is high, production cost is low, be easy to the advantages such as suitability for industrialized production, is the innovation on glue, has good economic and social benefit.
Claims (5)
1. the preparation method without the tasteless environment friendly transparent PVA of aldehyde glue, it is characterized in that: by PVA, water, properties-correcting agent and sanitas are made, wherein, PVA content is the 1-15% of glue weight, modifier content is the 0.5-10% of PVA weight, antiseptic content is the 0.01-0.05% of PVA weight, surplus is water, wherein, at room temperature 18-25 ℃, PVA is mixed with water, after stirring, be warmed up to 85-100 ℃, after dissolve complete, be cooled to 45-85 ℃, add properties-correcting agent, at 45-85 ℃, modification 0.5-2 hour, be down to room temperature 18-25 ℃, add sanitas to mix, obtain transparent PVA glue, described properties-correcting agent is for reaching the Glycerin of modified function, 1，2，3，4-butantetraol, 1,2,3,4,5-pentitol, Sorbitol, the mixture of one or more of 1,2,3,4,5,6,7-volemitol, described sanitas is boric acid or Whitfield's ointment.
2. the preparation method without the tasteless environment friendly transparent PVA of aldehyde glue according to claim 1, is characterized in that, adds 384ml water in 1L four-necked bottle, under stirring, slowly add 16gPVA, at room temperature 18-25 ℃, after stirring, be warmed up to 92 ℃, after dissolve complete, cool to 70 ℃, add properties-correcting agent Glycerin 0.32g, at 65-70 ℃, modification 45 minutes, is down to room temperature 18-25 ℃, add 0.005g sanitas boric acid, obtain.
3. the preparation method without the tasteless environment friendly transparent PVA of aldehyde glue according to claim 1, is characterized in that, adds 360ml water in 1L four-necked bottle, slowly adds 40gPVA under stirring, at room temperature 18-25 ℃, after stirring, be warmed up to 95 ℃, after dissolve complete, cool to 75 ℃, add properties-correcting agent 1,2,3,4,5-pentitol 2.4g, at 70-75 ℃, modification 45 minutes, be down to room temperature 18-25 ℃, add 0.02g sanitas boric acid, obtain.
4. the preparation method without the tasteless environment friendly transparent PVA of aldehyde glue according to claim 1, is characterized in that, adds 460ml water in 1L four-necked bottle, slowly adds 51gPVA under stirring, at room temperature 18-25 ℃, after stirring, be warmed up to 95 ℃, after dissolve complete, cool to 50 ℃, add properties-correcting agent 1,2,3,4,5-pentitol 1.5g, 1,2,3,4-butantetraol 1.5g, at 45-50 ℃, modification 45 minutes, be down to room temperature 18-25 ℃, add 0.025g sanitas Whitfield's ointment, obtain.
5. the preparation method without the tasteless environment friendly transparent PVA of aldehyde glue according to claim 1, is characterized in that, adds 484ml water in 1L four-necked bottle, slowly adds 20gPVA under stirring, at room temperature 18-25 ℃, after stirring, be warmed up to 92 ℃, after dissolve complete, cool to 80 ℃, add properties-correcting agent Glycerin 0.2g, 1,2,3,4,5,6-hexan-hexol 0.3g, at 75-80 ℃, modification 45 minutes, be down to room temperature 18-25 ℃, add 0.006g sanitas Whitfield's ointment, obtain.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210275985.XA CN102757747B (en) | 2012-08-06 | 2012-08-06 | Aldehyde-free odorless environment-friendly and transparent polyvinyl alcohol (PVA) glue and preparation method thereof |
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| CN201210275985.XA CN102757747B (en) | 2012-08-06 | 2012-08-06 | Aldehyde-free odorless environment-friendly and transparent polyvinyl alcohol (PVA) glue and preparation method thereof |
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| CN102757747B true CN102757747B (en) | 2014-02-05 |
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| CN105218991A (en) * | 2014-06-09 | 2016-01-06 | 宁波宝林达玩具有限公司 | Pearl mud and production technique thereof |
| CN105524573B (en) * | 2014-09-29 | 2018-07-24 | 中国石油化工集团公司 | A kind of trademark adhesive |
| CN105885713A (en) * | 2015-01-15 | 2016-08-24 | 张新建 | Pre-glued dry type trademark process technology |
| CN105368347A (en) * | 2015-11-23 | 2016-03-02 | 苏州盖德精细材料有限公司 | Polyvinyl alcohol instant glue and preparation method thereof |
| CN106381096A (en) * | 2016-11-01 | 2017-02-08 | 肇庆高新区飞越信息科技有限公司 | Water-based plastic product label adhesive |
| CN107236486A (en) * | 2017-06-27 | 2017-10-10 | 太仓市麦哲电子商务有限公司 | A kind of environment-friendly type office glue and preparation method thereof |
| CN112341957A (en) * | 2020-10-21 | 2021-02-09 | 齐皓宇 | Metal complex type high-strength polyvinyl alcohol glue and preparation method thereof |
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| US3632786A (en) * | 1968-11-12 | 1972-01-04 | Monsanto Co | Polyvinyl alcohol adhesive composition with high wet tack containing a boron compound and a cis 1 2 polyol compound |
| CN1293160C (en) * | 2005-02-25 | 2007-01-03 | 苏州市丛岭胶粘剂有限公司 | Watermark-free heat transfer printing adhesive |
| CN101624505A (en) * | 2008-07-10 | 2010-01-13 | 宁波松鹤文具有限公司 | Pressure-sensitive solid adhesive and preparation method thereof |
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