CN101230117A - Method for preparing white emulsion by using polyvinyl acetal acid as emulsion stabilizer - Google Patents
Method for preparing white emulsion by using polyvinyl acetal acid as emulsion stabilizer Download PDFInfo
- Publication number
- CN101230117A CN101230117A CNA2007100605911A CN200710060591A CN101230117A CN 101230117 A CN101230117 A CN 101230117A CN A2007100605911 A CNA2007100605911 A CN A2007100605911A CN 200710060591 A CN200710060591 A CN 200710060591A CN 101230117 A CN101230117 A CN 101230117A
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- Prior art keywords
- polyvinyl acetal
- emulsion
- latex
- vinyl acetate
- acetal acid
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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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- Adhesives Or Adhesive Processes (AREA)
- Polymerisation Methods In General (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
The invention relates to white latex preparation method that polyvinyl acetal is taken as latex stabilizer. The latex polymerization reaction of vinyl acetate monomer, OP emulsifier, ammonium peroxysulfate initiator and water-latex polymerization system is performed under the existence of the polyvinyl acetal of the latex stabilizer, to obtain the strong white latex with high stability. The weight ratio of the vinyl acetate and the polyvinyl acetal in the system is 5 to 15:1. The product is suitable for the adhesive bonding of the lumber, the veneer and the paper products in the architectural decoration industry.
Description
Technical field
The present invention relates to a kind of is the white glue with vinyl preparation method of emulsion stabilizer with polyvinyl acetal acid, proposes a kind of adhesive preparation method that is particularly suitable for timber, facing plate and the paper product of architectural decoration, belongs to the macromolecule chemical industry field.
Background technology
Polyvinyl acetate (PVA) claims white glue with vinyl again, has advantage cheap, easy to use, nontoxic, pollution-free and that viscosity is good, and the timber, facing plate and the paper product that are widely used in architectural decoration are bonding.
The tradition white glue with vinyl exists cold-resistant, poor water resistance, the high and slow shortcoming of rate of drying of film-forming temperature.Many improved patents of carrying out are disclosed at these problems, but not basic the solution.
Summary of the invention
The present invention has added polyvinyl acetal acid as emulsion stabilizer when carrying out emulsion polymerization with vinyl acetate, emulsifying agent, initiator and water, obtain the powerful white latex of high stability.
The monomer vinyl acetate adds reactor stablizing in batches under the reflux conditions, make product solid content 30%-50%.
Polyvinyl acetal acid does not have Industrial products, preparation in the laboratory.Vinyl acetate and polyvinyl acetal acid weight ratio are 5-15: 1.
Emulsifying agent adopts non-ionic type OP emulsifying agent and anionic dodecyl sodium sulfonate mixture, adds 0.4%-2%.
Initiator ammonium persulfate consumption 0.2%-1.0%, the water-soluble solution of making adds reactor in batches.
70-90 ℃ of letex polymerization temperature control.
Innovation part of the present invention is to adopt polyvinyl acetal acid as emulsion stabilizer.Since introduced carboxyl in the polymkeric substance, can be crosslinked with multiple group, increased its water tolerance and bonding strength.
Embodiment
The objective of the invention is to realize in the following ways, describe in detail below in conjunction with embodiment:
Embodiment 1
In the 500ml four-hole bottle of agitator, thermometer and dropping funnel is housed, add 180ml deionized water and 17g polyvinyl alcohol, be heated to 85 ℃, polyvinyl alcohol is all dissolved with electric mantle.Under agitation add 40% glyoxylic acid solution 7.4g, drip 10% hydrochloric acid soln control pH value of solution 1-3.Continuation when reaction system retrogradation gradually, stops condensation when occurring a large amount of bubbles in the system or having floss to produce at 85 ℃ of following stirring reactions, and regulating the pH value with 8% sodium hydroxide solution is 7-8, and cooling obtains heavy-gravity polyvinyl acetal acid stablizer.
Embodiment 2
Elder generation is dissolved in Potassium Persulphate 0.2g in the 8ml water standby, and it is standby that the 60ml vinyl-acetic ester adds dropping funnel.
In the 500ml four-hole bottle of agitator, condenser, thermometer is housed, add 10% polyvinyl acetal acid aqueous solution 60ml, OP-10 2ml, dodecyl sodium sulfonate 1.0g, distilled water 24ml, vinyl-acetic ester 10ml and potassium persulfate solution 2ml respectively.Begin to stir, and heat to 68-70 ℃.Gradation drips residual monomers and initiator in 2 hours, and adding speed is stable to keep prolong to reflux.Progressively improve temperature of reaction to 90 ℃ when under this temperature, do not have refluxing, continue reaction and not removing water-bath to there being when backflow.Reaction mixture is cooled to 50 ℃, and adding 10% sodium bicarbonate aqueous solution regulation system pH is 2-5, and through fully stirring postcooling to room temperature, discharging obtains stable white glue with vinyl.
Claims (4)
1. vinyl acetate, emulsifying agent, initiator and water carry out the powerful white latex that emulsion polymerization obtains high stability in the presence of the emulsion stabilizer polyvinyl acetal acid.
2. method according to claim 1 is characterized in that vinyl acetate and polyvinyl acetal acid weight ratio are 5-15: 1.
3. method according to claim 1, monomer vinyl acetate and initiator ammonium persulfate add reactor in batches.
4. method according to claim 1, the solid content of emulsion is selected 30%-50% according to purposes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100605911A CN101230117A (en) | 2007-12-29 | 2007-12-29 | Method for preparing white emulsion by using polyvinyl acetal acid as emulsion stabilizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100605911A CN101230117A (en) | 2007-12-29 | 2007-12-29 | Method for preparing white emulsion by using polyvinyl acetal acid as emulsion stabilizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101230117A true CN101230117A (en) | 2008-07-30 |
Family
ID=39896967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100605911A Pending CN101230117A (en) | 2007-12-29 | 2007-12-29 | Method for preparing white emulsion by using polyvinyl acetal acid as emulsion stabilizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101230117A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102040928A (en) * | 2010-11-24 | 2011-05-04 | 广东三和化工科技有限公司 | Modified waterproof frost-resisting white latex |
| CN102295903A (en) * | 2011-06-24 | 2011-12-28 | 浙江农林大学 | Production method for rapidly-precured white latex |
| CN110256793A (en) * | 2019-07-31 | 2019-09-20 | 成都世友海绵制品有限公司 | A kind of memory coconut palm cream and preparation method thereof |
| CN110372835A (en) * | 2019-07-31 | 2019-10-25 | 成都世友海绵制品有限公司 | A kind of negative oxygen ion memory coconut palm cream and preparation method thereof |
-
2007
- 2007-12-29 CN CNA2007100605911A patent/CN101230117A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102040928A (en) * | 2010-11-24 | 2011-05-04 | 广东三和化工科技有限公司 | Modified waterproof frost-resisting white latex |
| CN102295903A (en) * | 2011-06-24 | 2011-12-28 | 浙江农林大学 | Production method for rapidly-precured white latex |
| CN102295903B (en) * | 2011-06-24 | 2012-09-05 | 浙江农林大学 | Production method for rapidly-precured white latex |
| CN110256793A (en) * | 2019-07-31 | 2019-09-20 | 成都世友海绵制品有限公司 | A kind of memory coconut palm cream and preparation method thereof |
| CN110372835A (en) * | 2019-07-31 | 2019-10-25 | 成都世友海绵制品有限公司 | A kind of negative oxygen ion memory coconut palm cream and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| DD01 | Delivery of document by public notice |
Addressee: Li Jiansheng Document name: Notification of before Expiration of Request of Examination as to Substance |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080730 |