CN103923581A - Modified white latex - Google Patents
Modified white latex Download PDFInfo
- Publication number
- CN103923581A CN103923581A CN201310012677.2A CN201310012677A CN103923581A CN 103923581 A CN103923581 A CN 103923581A CN 201310012677 A CN201310012677 A CN 201310012677A CN 103923581 A CN103923581 A CN 103923581A
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- CN
- China
- Prior art keywords
- butyl acrylate
- vinylformic acid
- initiator
- white latex
- acrylic 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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- Polymerisation Methods In General (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses a modified white latex which comprises the following components in parts by weight: 10 parts of vinyl acetate, 0.7 part of acrylic acid, and 1.5 pars of butyl acrylate; the amount of an initiator is 0.3% of the sum of the amounts of acrylic acid and butyl acrylate, and the amount of an emulsifier is 2%-3% of the sum of the amounts of acrylic acid and butyl acrylate. The white latex after modification has high viscosity, can form a film at room temperature, has the advantages of relatively good bonding strength, relatively good water resistance and the like, and has relatively great market popularization value.
Description
Technical field
The invention belongs to chemical production technical field, especially relate to a kind of modified latex.
Background technology
Polyvinyl acetate emulsion is a kind of broad-spectrum water accack, and its annual requirement is only second to urea-formaldehyde glue.As polyvinyl acetate (PVA) (PVAC) emulsion (being commonly called as white glue with vinyl) of aqueous adhesive because possess cheap, produce easily; Easy to use, bonding strength is high; Nontoxic, non-environmental-pollution, the nonflammable advantage such as explosive and be widely used.But polyvinyl acetate (PVA) milky white adhesive is Shortcomings part also, as water tolerance and the shortcoming such as winter hardiness is poor, limited its application prospect.
Summary of the invention
The present invention, in order to solve the shortcomings such as Virgin's milk acid water tolerance and winter hardiness is poor, provides a kind of method of modified polyvinyl acetate emulsion acid.
The technical solution used in the present invention is:
A modified latex, comprises following component (calculating by weight):
10 parts of vinyl acetates, 0.7 part, vinylformic acid, butyl acrylate 1.5;
Initiator is 0.3% of aforementioned vinylformic acid and butyl acrylate consumption sum;
Emulsifying agent is 1%～5% of aforementioned vinylformic acid and butyl acrylate consumption sum.
Preferably, described emulsifying agent is polyvinyl alcohol (PVA), and content is 2.8% of vinylformic acid and butyl acrylate consumption sum.
White glue with vinyl after modification of the present invention, has viscosity large, and in film forming at room temperature, the advantage such as bonding strength, water resistance are better, has larger market popularization value.
Embodiment
Below in conjunction with following preferred embodiment, the present invention is specifically described.
Preparation process, comprises the steps:
Step 1: take into account in the reactor of dropping funnel electric mixer, reflux exchanger, temperature are housed, add successively deionized water, polyvinyl alcohol, stir and be warming up to 90 ℃ of left and right polyvinyl alcohol is dissolved completely.
Step 2: be cooled to 60 ℃ of initiator ammonium persulfates that add people NP-10 and 1/3 and 1/3 vinyl acetate, butyl acrylate, vinylformic acid mix monomer.After emulsification 30min, be warming up to 70～75 ℃.
Step 3: when reaction mass has blue-fluorescence, drip remaining 2/3 mix monomer and initiator.Temperature is controlled at 75 ℃ of left and right, has appropriateness to reflux and is advisable, and time for adding is controlled at 2.5～3h.
Step 4: after dropwising, continue the about 1h of reaction at this temperature, till essentially no backflow.Be warming up to 90 ℃ and add initiator, continue reaction 0.5h, then stop heating, cooling while stirring.
Step 5: when temperature of reaction is down to 70 ℃, with concentration 10% sodium bicarbonate.Some of solution, regulate the pH of reactant between 6～7, add dibutyl phthalate, stir.When being down to 60 ℃, temperature of reaction adds people's ethanol, zinc chloride., mix evenly, be cooled to discharging after room temperature.
Embodiment 1:
Get vinyl acetate 100g, vinylformic acid 7g, butyl acrylate 15g; Initiator ammonium sulfate 0.066g, the 0.44g that emulsifying agent is, according to aforementioned preparation process, makes modified polyvinyl acetate emulsion tackiness agent.Measure its character as follows: solid content is 41%, emulsion viscosity is 200mPaS, and water tolerance is 31min.
Embodiment 2:
Get vinyl acetate 100g, vinylformic acid 7g, butyl acrylate 15g; Initiator ammonium sulfate 0.066g, emulsifying agent PVA is 0.55g, according to aforementioned preparation process, makes modified polyvinyl acetate emulsion tackiness agent.Measure its character as follows: solid content is 42%, emulsion viscosity is 450mPaS, and water tolerance is 57min.
Embodiment 3:
Get vinyl acetate 100g, vinylformic acid 7g, butyl acrylate 15g; Initiator ammonium sulfate 0.066g, emulsifying agent PVA is 0.616g, according to aforementioned preparation process, makes modified polyvinyl acetate emulsion tackiness agent.Measure its character as follows: solid content is 45%, emulsion viscosity is 850mPaS, and water tolerance is 79min.
Embodiment 4:
Get vinyl acetate 100g, vinylformic acid 7g, butyl acrylate 15g; Initiator ammonium sulfate 0.066g, emulsifying agent PVA is 0.66g, according to aforementioned preparation process, makes modified polyvinyl acetate emulsion tackiness agent.Measure its character as follows: solid content is 46%, emulsion viscosity is 1800mPaS, and water tolerance is 23min.
Above-described embodiment is typical embodiment of the present invention, and above-described embodiment is not used in and limits the scope of the invention.
Claims (2)
1. a modified latex, comprises following component (calculating by weight):
10 parts of vinyl acetates, 0.7 part, vinylformic acid, butyl acrylate 1.5;
Initiator is 0.3% of aforementioned vinylformic acid and butyl acrylate consumption sum;
Emulsifying agent is 2%～3% of aforementioned vinylformic acid and butyl acrylate consumption sum.
2. modified latex as claimed in claim 1, is characterized in that: initiator is ammonium persulphate, and described emulsifying agent is polyvinyl alcohol (PVA), and content is 2.8% of vinylformic acid and butyl acrylate consumption sum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310012677.2A CN103923581A (en) | 2013-01-14 | 2013-01-14 | Modified white latex |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310012677.2A CN103923581A (en) | 2013-01-14 | 2013-01-14 | Modified white latex |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103923581A true CN103923581A (en) | 2014-07-16 |
Family
ID=51141985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310012677.2A Pending CN103923581A (en) | 2013-01-14 | 2013-01-14 | Modified white latex |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103923581A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106832309A (en) * | 2016-12-28 | 2017-06-13 | 重庆市沙坪坝区尊越科技有限责任公司 | A kind of modified polyvinyl acetate and its manufacture craft |
| CN108753218A (en) * | 2018-05-07 | 2018-11-06 | 安徽盛美金属科技有限公司 | A kind of preparation method of Polyvinyl acetate adhesive |
| CN117264565A (en) * | 2023-09-22 | 2023-12-22 | 涿州市丰硕伟业精细化工有限公司 | Waterproof white latex and preparation method thereof |
-
2013
- 2013-01-14 CN CN201310012677.2A patent/CN103923581A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106832309A (en) * | 2016-12-28 | 2017-06-13 | 重庆市沙坪坝区尊越科技有限责任公司 | A kind of modified polyvinyl acetate and its manufacture craft |
| CN106832309B (en) * | 2016-12-28 | 2019-12-24 | 重庆市沙坪坝区尊越科技有限责任公司 | Modified polyvinyl acetate and preparation process thereof |
| CN108753218A (en) * | 2018-05-07 | 2018-11-06 | 安徽盛美金属科技有限公司 | A kind of preparation method of Polyvinyl acetate adhesive |
| CN117264565A (en) * | 2023-09-22 | 2023-12-22 | 涿州市丰硕伟业精细化工有限公司 | Waterproof white latex and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140716 |