CN1517422A - Stripping-type emulsion pressure sensitive adhesive and prossure sentitire adhesive tape - Google Patents
Stripping-type emulsion pressure sensitive adhesive and prossure sentitire adhesive tape Download PDFInfo
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- CN1517422A CN1517422A CNA03113629XA CN03113629A CN1517422A CN 1517422 A CN1517422 A CN 1517422A CN A03113629X A CNA03113629X A CN A03113629XA CN 03113629 A CN03113629 A CN 03113629A CN 1517422 A CN1517422 A CN 1517422A
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- pressure
- emulsion
- sensitive adhesive
- pressure sensitive
- emulsion polymer
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Abstract
An stripping-type emulsion-type pressure-sensitive adhesive able to be easily stripped from substrate without any residue contains the acrylate-type emulsion polymer prepared from the alkyl acrylate and polar hydroxy monomer through copolymerizing, and the cross-linking agent containing dispersed-in-water polyisocyanate. Its advantages are low stripping strength, high durability and high resistance to high temp.
Description
The present invention relates to peelable release emulsion pressure sensitive sticking agent and pressure sensitive adhesion sheet, comprise pressure sensitive adhesion sheet and the pressure-sensitive adhesive tape made with this pressure sensitive adhesive.
The preparation method of the used pressure-sensitive adhesive of relevant peelable release pressure sensitive adhesion sheet, existing before this many reports.With (methyl) esters of acrylic acid is principal monomer, adopts the pressure-sensitive adhesive of solution polymerization process preparation, though because of adopting a large amount of organic solvents, there are problems such as safety, health risk and contaminate environment in better performances.One of purpose of the present invention is to adopt emulsion pressure-sensitive adhesive to replace the solvent-borne type pressure-sensitive adhesive, to reach safety, environmental protection, to reduce cost.
Before the present invention, the report that adopts emulsion pressure-sensitive adhesive to prepare peelable release pressure sensitive adhesion sheet is arranged." with the high stable of polyfunctional monomer preparation, can removal type water-based acrylic ester class emulsion pressure-sensitive " (United States Patent (USP) 5,763,555 1998) described a kind of peelable release water-based acrylic ester class emulsion pressure-sensitive, it is the system of high gel content.Similarly method is also seen " can removal type acrylic emulsion pressure sensitive adhesive " (United States Patent (USP) 5,240,989 1993).Except that adopting polyfunctional monomer, also use softening agent in this patent.All there is a serious defective in the emulsion pressure-sensitive adhesive of above-mentioned two patents preparation, and promptly the bonding force of tackiness agent and base material is not enough.By the adhesive sheet of their preparations, from by on the bonding object plane during strip off, cause coming off of tackiness agent easily, and when selected base material was low interfacial energy material such as plastics, problem was more serious.The latter has introduced a kind of terms of settlement, promptly before the coating emulsion pressure-sensitive adhesive, carries out earlier primary coat on coated article.Obviously, this has increased operation and cost.Therefore, another object of the present invention is to solve in the peelable release pressure sensitive adhesion sheet bonding bad problem between the pressure-sensitive adhesive and base material, only needs once coating, has simplified technology.
The technology of the present invention belongs to the preparation of peelable release emulsion pressure-sensitive adhesive of low stripping force and pressure sensitive adhesion sheet, especially is fit to the occasion of non-polar plastics such as polyethylene and polypropylene as base material, and its Application Areas mainly is sealing tape and label.Made adhesive sheet has following performance and feature: peeling force less (less than 4N/25mm), and adjustable, and good endurance promptly after pasting the long period, is not still stayed cull during strip off with adhesive sheet from base material, and peeling force increases lessly, and resistance toheat is good.
The emulsion polymer of the peelable release pressure-sensitive adhesive that the present invention relates to is synthetic by the following monomer of forming:
(a) general formula of 80～99.9% weight (I)
CH
2＝CH(R
1)COOR
2 (I)
(I) Biao Shi acrylic ester monomer, R in the formula
1Represent hydrogen atom or methyl, R
2Representative contains the alkyl of 2～14 carbon atoms, and
(b) the esters of acrylic acid polar monomer of 0.1～20% weight, wherein the hydroxyl monomer of 0.1～8% weight.
Described polymkeric substance is synthetic with emulsion polymerization, and the solid content of gained emulsion is 35～65%.By selecting monomer kind and consumption, the second-order transition temperature that makes polymkeric substance is at-20～-70 ℃.In the used monomer, contain the polar monomer of the hydroxy functional groups of 0.1% weight at least, as Hydroxyethyl acrylate, hydroxyethyl methylacrylate, Propylene glycol monoacrylate, Rocryl 410, n-methylolacrylamide etc.
During letex polymerization, use a kind of anionic emulsifier at least, its consumption is less than 1.5% (with respect to the monomer total amount), to improve the water tolerance of emulsion pressure-sensitive adhesive.Can use traditional non-reacted anionic emulsifier or the nonionic emulsifying agent of all or part of replacement of reactive emulsifier, with preparation water tolerance emulsion pressure-sensitive adhesive.
The peelable release pressure sensitive adhesive that the present invention relates to is made up of above-mentioned emulsion polymkeric substance and additional crosslink agent, and its total solid content surpasses 30%.Used additional crosslink agent has comprised at least a water dispersible polyfunctional isocyanate.Can be used for polyfunctional isocyanate of the present invention and comprise aromatic isocyanate, alicyclic ring isocyanic ester, and aliphatic isocyanate.Having improved the modified version polyfunctional isocyanate of water-dispersion performance and blocked polyisocyanates that heating the time can be emitted isocyanate group is the preferred of this patent.These polyisocyanates can be used separately, or with they two or more formations mixture and be used.The consumption of polyisocyanates active substance accounts for 0.3～10%, preferred 0.3～6% of emulsion polymer solid part weight in the additional crosslink agent.
The peelable release pressure sensitive adhesion sheet that the present invention relates to is made up of substrate and the pressure-sensitive adhesive layer of being made by above-mentioned pressure-sensitive adhesive that forms in the one or both sides of base material.This pressure sensitive adhesion sheet comprises pressure-sensitive adhesive tape, Pressuresensitive Label and pressure sensitive adhesion sheet, can be by at substrate for example plastic film or sheet, paper, yarn fabric, nonwoven fabric, tinsel, or the one or both sides of the laminate of these materials are coated this pressure-sensitive adhesive and are made.
Provide embodiment below with the explanation this patent.
The preparation of acrylic acid emulsion polymer
One, proportioning
Reactor bed material (quality)
Deionized water: 260
Na
2CO
3：1.1
Pre-emulsion: 77.2
Pre-emulsion
Deionized water: 380
Isooctyl acrylate monomer: 820
Hydroxyethyl acrylate: 8.2
Sodium dodecylbenzene sulfonate: 9
Initiator
Reactor ammonium persulphate/water: 5/15
Drip ammonium persulphate/water: 2.2/50
Two, technology:
In reactor, add 8% pre-emulsion, be warmed up to 75 ℃, add initiator, reacted 30 minutes, dripped pre-emulsion 2.5 hours, initiator 3 hours.Be warmed up to 90 ℃, be incubated 1 hour.Cool to 40 ℃, transfer pH value to 7～8, the packing discharging with ammoniacal liquor.
The preparation of peelable release emulsion pressure-sensitive adhesive and adhesive sheet
Preparation (quality):
Above-mentioned emulsion: 100
But water decentralized MDI:4
With above-mentioned mixing of materials, and stir about 30 minutes.The material of mixing is applied on the biaxially oriented polypropylene film of 30 μ m,, makes the adhesive sheet that binder layer thickness is 20 μ m 110 ℃ of dryings 2 minutes.The performance of this adhesive sheet is as follows:
180 ° of peeling force: 2.8N/25mm (to stainless steel plate)
Initial bonding strength (ball number): 12#
Weather resistance: adhesive tape is affixed on the materials such as PVC, stainless steel or aluminium alloy, after 1 year, the strip off adhesive tape does not have any cull; The above-mentioned subsides that are used for testing 180 ° of peeling forces the sample of adhesive tape, after normal temperature is placed 60 days, test 180 ° of peeling forces, its value is 3.1N/25mm
Thermotolerance: will post the stainless steel plate of above-mentioned made adhesive tape, place 80 ℃ constant temperature oven, place 48 hours, while hot or cooling back strip off adhesive tape, no any cull on adherend.
Claims (6)
1, a kind of emulsion-type pressure-sensitive adhesive, pressure sensitive adhesion sheet prepared therefrom have lower stripping strength (less than 4N/25mm), do not stay cull when multiple base material is peeled off.This emulsion pressure-sensitive adhesive is made up of emulsion polymer and additional crosslink agent.Before the painting process of preparation pressure sensitive adhesion sheet, additional crosslink agent is added the letex polymerization objects system stir evenly.The synthon of emulsion polymer is composed as follows:
(a) general formula of 80～99.9% weight (I)
CH
2＝CH(R
1)COOR
2 (I)
(I) Biao Shi acrylic ester monomer, R in the formula
1Represent hydrogen atom or methyl, R
2Representative contains the alkyl of 2～14 carbon atoms, and
(b) the interior olefin(e) acid class polar monomer of 0.1～20% weight, wherein the hydroxyl monomer of 0.1～8% weight.
2, the second-order transition temperature of the described emulsion polymer of claim 1 is at-20～-70 ℃.
3, the solid content of the described emulsion pressure-sensitive adhesives of claim 1 is greater than 30%.
4, the described additional crosslink agent of claim 1 has comprised at least a water dispersible polyisocyanates.
5, the described water dispersible polyisocyanates of described additional crosslink agent of claim 1 and claim 4, its consumption were 0.2～10% (mass ratio refers to that solid part wherein accounts for the per-cent of solid part in the emulsion polymer).
6, the described pressure sensitive adhesion sheet of claim 1, it comprises a substrate and the bonding coat that forms in a side of this substrate.The feature of this bonding coat is, the emulsion pressure-sensitive adhesive by claim 1 and the described emulsion polymer of claim 5 and additional crosslink agent are formed forms after drying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA03113629XA CN1517422A (en) | 2003-01-18 | 2003-01-18 | Stripping-type emulsion pressure sensitive adhesive and prossure sentitire adhesive tape |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA03113629XA CN1517422A (en) | 2003-01-18 | 2003-01-18 | Stripping-type emulsion pressure sensitive adhesive and prossure sentitire adhesive tape |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1517422A true CN1517422A (en) | 2004-08-04 |
Family
ID=34283758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA03113629XA Pending CN1517422A (en) | 2003-01-18 | 2003-01-18 | Stripping-type emulsion pressure sensitive adhesive and prossure sentitire adhesive tape |
Country Status (1)
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| CN (1) | CN1517422A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102471658A (en) * | 2009-08-25 | 2012-05-23 | 乐金华奥斯有限公司 | Water-based adhesive composition , method for manufacturing same, and adhesive film |
| CN106327994A (en) * | 2016-08-18 | 2017-01-11 | 广州市金万正印刷材料有限公司 | Antimicrobial sealing label capable of being torn and stuck for plurality of times and preparation method and application of antimicrobial sealing label |
| CN106749874A (en) * | 2016-12-27 | 2017-05-31 | 无锡海特新材料研究院有限公司 | Controllable pressure sensitive adhesive of a kind of peeling force and preparation method thereof |
| CN107189700A (en) * | 2017-06-26 | 2017-09-22 | 俞惠英 | A kind of water-borne pressure sensitive adhesive and preparation method thereof |
| CN112760067A (en) * | 2021-01-19 | 2021-05-07 | 济宁明升新材料有限公司 | Preparation method of water-based adhesive for stretching and debonding adhesive tape and stretching and debonding adhesive tape |
-
2003
- 2003-01-18 CN CNA03113629XA patent/CN1517422A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102471658A (en) * | 2009-08-25 | 2012-05-23 | 乐金华奥斯有限公司 | Water-based adhesive composition , method for manufacturing same, and adhesive film |
| US9458360B2 (en) | 2009-08-25 | 2016-10-04 | Lg Hausys, Ltd. | Water-based adhesive composition, method for manufacturing same, and adhesive film |
| CN106327994A (en) * | 2016-08-18 | 2017-01-11 | 广州市金万正印刷材料有限公司 | Antimicrobial sealing label capable of being torn and stuck for plurality of times and preparation method and application of antimicrobial sealing label |
| CN106327994B (en) * | 2016-08-18 | 2018-07-17 | 广州市金万正印刷材料有限公司 | Antimicrobial seal laber of patch and its preparation method and application can repeatedly be torn |
| CN106749874A (en) * | 2016-12-27 | 2017-05-31 | 无锡海特新材料研究院有限公司 | Controllable pressure sensitive adhesive of a kind of peeling force and preparation method thereof |
| CN107189700A (en) * | 2017-06-26 | 2017-09-22 | 俞惠英 | A kind of water-borne pressure sensitive adhesive and preparation method thereof |
| CN112760067A (en) * | 2021-01-19 | 2021-05-07 | 济宁明升新材料有限公司 | Preparation method of water-based adhesive for stretching and debonding adhesive tape and stretching and debonding adhesive tape |
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