CN1165528A - Aqueous adhesive composition, adhesive film and process for producing it - Google Patents

Aqueous adhesive composition, adhesive film and process for producing it Download PDF

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Publication number
CN1165528A
CN1165528A CN96191054A CN96191054A CN1165528A CN 1165528 A CN1165528 A CN 1165528A CN 96191054 A CN96191054 A CN 96191054A CN 96191054 A CN96191054 A CN 96191054A CN 1165528 A CN1165528 A CN 1165528A
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bonding coat
adhesive composition
aqueous adhesive
bonding
lining
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阿部秀俊
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3M Co
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Minnesota Mining and Manufacturing Co
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
    • C08J3/09—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in organic liquids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
    • C08J3/09—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in organic liquids
    • C08J3/091—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in organic liquids characterised by the chemical constitution of the organic liquid
    • C08J3/095—Oxygen containing compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
    • C09J7/38—Pressure-sensitive adhesives [PSA]

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • General Chemical & Material Sciences (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Adhesive Tapes (AREA)

Abstract

An adhesive layer having minimal coating failure and little thickness variation is diclosed. An aqueous adhesive composition comprises a mixed solvent of water and a co-solvent, and an adhesive component dissolved or dispersed in the mixed solvent, the co-solvent containing a compound (A) represented by formula (1) wherein R1 is a methyl group or an ethyl group; and R2 is an alkylene group having 3 to 5 carbon atoms.

Description

Aqueous adhesive composition, bonding film and the method for preparing bonding film
The field of the invention
The present invention relates to aqueous adhesive composition.More specifically, the present invention relates to be suitable for make the aqueous adhesive composition of the product that contains bonding coat (as bonding film etc.).Moreover, the present invention relates to comprise the bonding film of the bonding coat of making by above-mentioned aqueous adhesive composition, and preparation method thereof.
Background of the present invention
Making the product that scribbles bonding coat (below be sometimes referred to as " bonding film ") at least one surface of base material wherein, as bonding film (film etc. of for example drawing), self adhesive tape (for example mending tape etc.), during pavement strip material etc., use up to now contain water-soluble or aqueous dispersion polymers as the aqueous adhesive composition of adhesive component as the coating solution of making its bonding coat.The example of making the method for these products comprises following method:
(i) be included in base material (for example film etc.) and go up the preparation bonding coat, will contain substrate (hereinafter referred to as " lining ") lamination such as the release layer of silicon layer etc. get on the method for protection bonding coat and
(ii) be included on the release layer of lining and prepare bonding coat, then the method for laminate substrate thereon.
Yet,, (ii) apply aqueous adhesive composition as stated above and be difficult on lining, prepare bonding coat usually because the surface (being sometimes referred to as " release surface ") of release layer is a waterproof.That is to say, for conventional aqueous adhesive composition, be inadequate to the wetting of water-proof surface to be coated, and the destruction (for example shrinking depression etc.) of coating can be taken place.Therefore, can not form coating fully thick and that thickness is constant.
In order to prevent above-mentioned breakdown of coating, it is effective adding thickening material.For example, in Japanese publication publication 61-101555, disclosed a kind of aqueous adhesive composition that contains this thickening material.Said composition comprises a kind of thickening material, as xanthan gum being dissolved in such as alcohol, ethylene glycol, the slurry that obtains in the non-solvent of ethylene glycol one ether etc.Yet thickening material has improved the viscosity of composition, has destroyed the flowability of composition.Therefore, be difficult to form the constant coating of thickness that can obtain well balanced coating performance.
Moreover in order to prevent to be coated with fault, it also is effective adding nonionic surface active agent.For example, in Japanese publication publication 55-30967, disclosed a kind of aqueous adhesive composition that comprises this nonionic surface active agent.This publication has disclosed and a kind of surface protective plate has been adhered to the water soluble adhesive that comprises nonionic surface active agent on the synthetic resin board.The disclosed useful nonionic surface active agent of this publication comprises the hydrophobic grouping of higher molecular weight, for example contains the alkyl or the aralkyl that are no less than 12 carbon atoms.Therefore, hydrophilic nmature and with the consistency of polymeric constituent on be poor, make that polymeric constituent is easy to separate with bonding coat.As time goes on, divide defection to make poor adhesion.
On the other hand, known the additive of the compound of use hydroxyl replacement already, the bounding force of control tackiness agent as binding compositions.For example, in Japanese publication publication 3-149280 and 3-149281, disclosed a kind of water-soluble binder that comprises this compound.In addition, in Japanese publication publication 57-186, disclosed can use the water-soluble phenolic resin solidifying agent (as diacetate glycol ester) as other additive.Yet this additive can not be used for preventing the generation of breakdown of coating, so it is poor preventing on the function of breakdown of coating.
And, know that also the miscible water miscibility organic solvent of use and water is as cosolvent.For example, in Japanese publication publication 4-337381, disclosed a kind of under low pressure can be smooth and equably paint treat the lip-deep adhesive resin that contains of adherent, water, water miscibility organic solvent, the solid adhesive of jelling agent and alkyl glycoxide.The disclosed useful water miscibility representative examples of organic of this publication comprises the compound of hydroxyl, as cellosolve (glycol monoethyl ether), and diethylene glycol monobutyl ether (Diethylene Glycol monobutyl ether), glycerine etc.The water miscibility organic solvent also is used for paint, for example lacquer of industrial high glossiness.Yet coating thick and that thickness is constant does not have enough validity to these solvents to form fully on surface to be coated to improving water-proof material (as siloxanes) wettability of the surface.
Know that equally the water-containing acrylic acid pressure sensitive adhesive comprises aforesaid thickening material and tensio-active agent.What for example, can commodity be to use the acrylic latex thickening material available from " the AROSET resin " of Ashland Co. is the acrylic pressure-sensitive adhesive of base with milk sap.Similarly, William R.Dougherty (Air Productsand Chemicals, Inc., _ _ _) article " tensio-active agent in pressure sensitive adhesive " shown has been mentioned is the surface energy of the nonionic surface active agent of the base aquifer coating composition that reduces acrylic pressure-sensitive adhesive and the generation that improves wettability and bubble effectively with ethylene glycol.Yet, as mentioned above, add thickening material and tensio-active agent and can not address the above problem.
General introduction of the present invention
At the problems referred to above in the prior art, the invention provides a kind of aqueous adhesive composition with following characteristics:
(1) it has enough flowabilities (for example viscosity in suitable scope etc.) applying when operation.
(2) can (do thickly, for example dried weight be 4-100g/m with thickness sufficient 2) on the surface with its paint water-repellancy object (for example lining etc.).
(3) it can form coating and seldom destroys the bonding coat that (for example shrink, depression etc.) and thickness seldom change to apply operation through routine.
(4) it can form the stable in time bonding coat of bounding force.
The invention provides a kind of aqueous adhesive composition that comprises the mixed solvent and the dissolving of water and cosolvent or be dispersed in the adhesive component in the mixed solvent, described cosolvent comprises the compd A by following formula (I) expression: R wherein 1Be methyl or ethyl; R 2For containing the alkylidene group of 3-5 carbon atom.Another aspect of the present invention also provides the bonding film that contains above-mentioned improvement bonding coat.Another aspect of the present invention provides the method for making the bonding film that contains above-mentioned improvement bonding coat.Further aspect of the present invention and feature disclose in the description of following embodiment.
Embodiment of the present invention
As mentioned above, aqueous adhesive composition comprises the mixed solvent and the dissolving of water and cosolvent or is dispersed in the adhesive component that mixes in the solvent, and described cosolvent comprises the compd A by following formula (I) expression:
Figure A9619105400052
R wherein 1Be methyl or ethyl; R 2For containing the alkylidene group of 3-5 carbon atom.
Contained compd A improves dissolving and the dispersing property of adhesive component in mixed solvent in the mixed solvent, influences the flowability and the rate of drying of binding compositions thus, so that they are controlled in the suitable scope.As a result, aqueous adhesive composition above-mentioned applies character and the bounding force stability in time of the bonding coat made by binding compositions can be improved.That is to say, these character of compd A can be confirmed from such fact from its chemical structure, that is exactly its not hydroxyl but comprise methoxyl group (or oxyethyl group) and acetoxyl group, and has the alkylidene group that contains 3-5 carbon atom between these functional groups.
Better embodiment of the present invention is characterised in that the water in 100 weight parts is benchmark, and the amount of contained compd A is the 20-100 weight part.When this amount was lower than 20 weight parts, flowability is reached was enough to be convenient to apply operation.Otherwise when this amount was higher than 100 weight parts, it needed long-time dry, so production efficiency is tending towards variation.
When the flowability of binding compositions was represented with the viscosity of binding compositions, viscosity was 500-10 preferably, 000cps.When this viscosity is lower than 500cps, be tending towards being difficult to obtain coating fully thick and that thickness is constant.Otherwise when this viscosity is higher than 10, during 000cps, flowability is poor, therefore very likely is difficult to apply operation and is difficult to binding compositions is sent into the equipment of applying.And when viscosity was too big, captive bubble was difficult for discharging during dispersion, was easy to produce the annular hole in coating, aperture etc.
In another embodiment, the invention provides a kind of bonding film of the bonding coat that comprises membranaceous base material and form on base material, described bonding coat evaporates mixed solvent and forms from aqueous adhesive composition as claimed in claim 1.Because this bonding film makes from above-mentioned binding compositions, it can not occur in apply produce in the operation such as contraction, the breakdown of coating of depression etc.And it contains the bonding coat that thickness changes in specialized range, and the bounding force of bonding coat is stable in time.
Be preferably, the modulus of compression that this bonding coat records in the time of 20 ℃ is 1 * 10 4-10 7Dyne/cm 2When modulus of compression is lower than 10 4Dyne/cm 2The time, cohesiveness diminishes, and is tending towards becoming insufficient as the bond properties of retention value and so on.Otherwise, when modulus of compression is higher than 10 7Dyne/cm 2The time, poor adhesion, and very likely be difficult to apply at normal temperatures bonding film.
In a further embodiment, the invention provides a kind of manufacturing and method of the bonding film formed mutually laminated together in this order by membranaceous base material, bonding coat and lining, it comprises the steps:
(a) on the release surface with aqueous adhesive composition paint lining as claimed in claim 1, at least one surface of lining is a release surface, removes the mixed solvent in the composition, forms bonding coat; With
(b) membranaceous substrate layer is pressed onto on the bonding coat is sealed.This manufacture method is convenient to make above-mentioned bonding film to improve production efficiency.In bonding film, when modifying substrate material, when thickness or base material, the form of base material (for example ornamental characteristic etc.) is looked product and is become.Yet general lining can use in different products.Therefore, if make the lining that has bonding coat in advance in large quantities, the lining that depository gets, the corresponding base material of product of preparation and customization uses base material and the above-mentioned lining that has bonding coat to make bonding film then, and the service efficiency that then applies equipment can improve.As a result, the production efficiency of bonding film is able to raising.
Compd A is that with the difference of the water miscibility organic solvent (for example cellosolve etc.) of hydroxyl in molecule compd A does not have very big solubleness to water.That is to say, compd A has predetermined solubleness in a certain scope to improve solvability or the dispersiveness of adhesive component in mixed solvent to being included in water in the mixed solvent, influence the flowability and the rate of drying of binding compositions thus, so that they are controlled in the suitable scope.Compd A is generally 1-30ml/100ml water to the solubleness of water, is 5-20ml/100ml water preferably.
In formula (I), R 2Carbonatoms be 3-5.When carbonatoms during less than 3, the above-mentioned character that applies of aqueous adhesive composition can't be improved.Otherwise, when carbonatoms during, need long-time dryly greater than 5, so production efficiency can variation.R 2Alkylidene group can be the straight or branched structure.And, R 1Be methyl preferably.Because relatively good to the solubleness of water, it helps to improve the character that applies of binding compositions.
When the velocity of evaporation of butylacetate was 100, the velocity of evaporation of compd A was good with 5-50, and 8-40 is good especially.
And the solubility parameter of compd A is 8.0-10.0 preferably, is 8.2-9.5 particularly well.
The unrestricted example of compd A comprises:
(PGM-AC: by Kuraray Co., Ltd makes propylene glycol monomethyl ether acetic ester; ) R 1=methyl, R 2Carbonatoms=3, solubility parameter=9.2, velocity of evaporation (when the velocity of evaporation of butylacetate is 100)=34 is to the solubleness=18.5ml/100ml of water
(PE-AC: by Kuraray Co., Ltd makes ethoxy propyl acetate; ) R 1=ethyl, R 2Carbonatoms=3, velocity of evaporation (when the velocity of evaporation of butylacetate is 100)=19 is to the solubleness=9.5ml/100ml of water
Acetate 3-methyl-3-methoxyl group butyl ester (Sorfit TM-AC: by Kuraray Co., Ltd makes; ) R 1=methyl, R 2Carbonatoms=5, solubility parameter=8.4, velocity of evaporation (when the velocity of evaporation of butylacetate is 100)=10 is to the solubleness=6.8ml/100ml of water
Acetate 3-methoxyl group butyl ester, R 1=methyl, R 2Carbonatoms=4, solubility parameter=8.5
And these compounds can separately or combine use.
With optional adhesive component that adds and additive dissolving or be dispersed in water and contain in the mixed solvent of cosolvent of compd A, obtain the aqueous adhesive composition solution that available method of application applies.
Unless effect of the present invention is destroyed, cosolvent can comprise the water miscibility organic solvent except compd A.In this case, be benchmark in the water of 100 weight parts, the amount of contained water miscibility organic solvent is not more than 20 weight parts preferably.
To polymkeric substance contained in the adhesive component and without particular limitation, general water-soluble or water dispersible adhesive polymer all can use.Its example comprises polyacrylic ester, polyvinyl acetate, polyvinyl alcohol, urethane, urea, melamine, siloxanes, natural rubber, synthetic rubber etc.When using this polymkeric substance, earlier with its dissolving or be dispersed in the mixed solvent.And contained polymkeric substance can be the elastic microsphere body of polymkeric substance after disperseing.This elastic microsphere body has description in Japanese publication publication 2-194079.
In order to improve the performance of tackiness agent, can in adhesive component, add tackifier, the additive of softening agent etc. such as linking agent.
Unless purpose of the present invention is destroyed, binding compositions can comprise such as thickening material, the additive of tensio-active agent etc.
Add the viscosity of thickening material with the control binding compositions.Alkalescence thickening type acrylic emulsion is preferably, for example, can use Primal ASE-60 and Primal TT-615 (by Rohm and Haas (R﹠amp; H) Co. makes).In 100 weight part adhesive polymers is benchmark, and the amount that is preferably solid matter to be added is the 0.2-3.0 weight part.When this measures less than 0.2 weight part, because inadequate thickening effectiveness is tending towards being difficult to obtain the constant coating of thickness.Otherwise when this amount during greater than 3.0 weight parts, dry required time is long, so production efficiency variation very likely.
Add the surface tension that tensio-active agent can be regulated binding compositions.The amount of the tensio-active agent that adds is generally the 0.005-0.5 weight part.For example, can use Tryton X-100 (polyglycol surfactants, R﹠amp; HCo. make), Tryton GR-5M (sulfosalt surfactant, R﹠amp; H Co. makes) and FC-129 (fluorochemical surfactant, 3M Co. makes).
In addition, in binding compositions, also can add defoamer, wetting enhancer, levelling agent, uv-absorbing agent, antioxidant, pigment etc.
Binding compositions of the present invention can prepare like this: with the water of predetermined amount, compd A, adhesive component, if needs and various additive add hitherto known mixed equipment or dispersing apparatus, dissolve equably then or disperse each material.The example of equipment comprises the high speed blender, planetary blender, extrusion machine, homogenizer, sand mill etc.
When using alkaline thickening type thickening material, form except the material of alkaline reagents (for example ammonia etc.) by uniform dissolution or dispersive midbody composite, and the adding alkaline reagents makes the midbody composite multiviscosisty.
Aqueous adhesive composition of the present invention can be used for making the bonding coat of bonding film as described below, and also can be used as solvent evaporation type tackiness agent.
On the release surface with aqueous adhesive composition paint base material of the present invention or lining, the dry then bonding coat that forms.For instance, use the conventional equipment that applies, as doctor knife coater, the gravure formula is coated with machine, and roller coating machine, mould are coated with machine and wait and apply.Usually after applying under 80-120 ℃ temperature dry 3-10 minute.When making bonding film, the coating wt of tackiness agent (dried weight) is 4-100g/m 2, and the visual purposes of this weight and selecting arbitrarily.
Bonding film of the present invention can be made like this: bonding coat is laminated on one or two surface of membranaceous substrate material, described material is as polyethylene, polypropylene, polyester, polyvinyl chloride, polymethylmethacrylate, polycarbonate, paper, tinsel, ceramic membrane etc., then with the bonding coat driving fit on base material.When bonding coat is difficult for being adhered on the base material, the substrate surface of laminate adhesive layer is carried out linging handle and improve bounding force.
The thickness of base material is generally 5-500 μ m, is 20-200 μ m preferably.
In routine is made, for with the dry then bonding film that contains bonding coat that obtains on the direct paint base material of binding compositions, with lining the surface coverage of formed bonding coat is got up, perhaps handle carrying out releasing agent with the surperficial relative substrate surface that contains bonding coat, preserve with roll-good form the cooling back.
And, on direct paint lining in the manufacturing processed of the dry then lining that obtains to have bonding coat with binding compositions, the surface of formed bonding coat is covered by another lining, perhaps handle carrying out releasing agent with the surperficial relative liner surface that contains bonding coat, preserve with roll-good form the cooling back.
Usually the releasing agent layer that forms silicon-containing compound on lining comes that lining is carried out releasing agent to be handled.
Embodiment
Following embodiment and Comparative Examples further describe the present invention.
Embodiment 1-3 and Comparative Examples 1-3
Tackiness agent
Use pressure sensitive adhesive as tackiness agent.Use set of monomers to become IOA: the polymkeric substance of the monomer mixture of BA: AA (90: 7: 3) is as adhesive polymer, add epoxy compounds (by Soken Kagaku Co., Ltd. make) make above-mentioned pressure sensitive adhesive as linking agent, IOA wherein, BA and AA are meant Isooctyl acrylate monomer respectively, butyl acrylate and vinylformic acid.
Compd A
Use Kuraray Co., acetate 3-methyl-3-methoxyl group butyl ester (Sorfit that Ltd makes TMAC).
The method of the perparation of specimen
Mixed and disperse the tackiness agent listed of predetermined amount as table 1, thickening material, tensio-active agent and compd A stir the mixture and use ammonia to carry out multiviscosisty, obtain binding compositions.The amount of each material of being prepared is listed in the table 1.On the lining that the binding compositions paint of gained was handled with silicon (RHC11T, by Sanei Kagaku Co., Ltd makes), making dried coating wt is 10g/m 2, subsequent drying forms bonding coat.Under 105 ℃, carried out drying 5 minutes.This is had the lining of bonding coat and above-mentioned binding compositions as sample, carry out following test.
The detailed description of test method
The flowability of solution
With filling the polythene container inclination 45 of binding compositions, estimate by following standard.
Zero: flow of solution
*: solution does not flow
Shrink
After on just with binding compositions paint lining, whether the surface of visual inspection gained coating exists depression, and hole or contraction are estimated by following standard.
Zero: do not have to destroy and take place
*: have to destroy and take place
Viscosity
Use 23 ℃ the time SA7 spindle to measure by JIS K7117.
Modulus of compression
In the time of 20 ℃, use the visco-elasticity spectrometer RSA II that makes by Rheometrix Co. to measure modulus of compression.At diameter is 5mm, and thickness is that the tackiness agent for the treatment of test in the cylinder of 7mm carries out molding, and cylinder is connected on the parallel plate anchor clamps.Then, change temperature in-80-150 ℃ scope, the frequency with 1 rad/second provides compressive strain to measure the relation of temperature and Young's modulus simultaneously.
Test-results is listed in the table below in 1.
Table 1
Solids content (%) Comparative Examples 1 Comparative Examples 2 Comparative Examples 3 Embodiment 1 Embodiment 2 Embodiment 3
Adhesive A SE-60 TT-615 FC-129 ammoniacal liquor compd A ????50 ????28 ????30 ????1 ????27 ????- 100.00 - 1.65 - 0.30 - 100.00 - 0.17 0.05 0.03 - 100.00 2.15 - - 0.15 - 100.00 - 1.65 0.05 0.30 30.00 100.00 3.58 - 0.05 0.25 10.00 100.00 - 2.48 0.05 0.45 45.00
The flowability of solution is shunk × ○ ○ × ○ × ○ ○ ○ ○ ○ ○
Viscosity (cps) modulus of compression (* 10 6) retention value (%) of peel adhesion 55000 2.3 79 1400 2.0 84 3000 2.1 71 4000 2.0 84 15000 1.9 74 6400 2.2 81
In table 1, ASE-60, TT-615 and FC-129 are meant the acrylic emulsion thickening material available from Rohm and Haas Co. respectively, available from the acrylic emulsion thickening material of Rhom and Haas Co. with available from the fluorochemical surfactant of Sumitomo 3M.
Be clear that from table 1 tackiness agent of Comparative Examples 1 has problems on flow of solution, and the tackiness agent of embodiment 1-3 is given its good flowability owing to adding cosolvent.Comparative Examples 2 and 3 tackiness agent can take place such as the destruction that contraction is arranged on lining, and the tackiness agent of embodiment 1-3 can form the good coating with improved wettability.The shortcoming of Comparative Examples seemingly makes them have that lower viscosity and its rate of drying cause too soon owing to not containing compd A; And the dispersed variation of adhesive component, adhesive component can take place coalescent.Embodiment 1-3 shows the medium rate of drying due to the viscosity variation, equally also show the good dispersiveness of adhesive component, and this good dispersiveness has reduced the generation of shrinking.
The lining that has tackiness agent and the thickness that use embodiment 1 and Comparative Examples 1-3 to make are the polychloroethylene film of 50 μ m, through conventional method base material and bonding coat are bonded together, and form bonding film.Base material is placed on the lining that has tackiness agent, add then depress make they between two rollers by finishing the bonding process.This bonding film is applied on the plate (by NTP Co., the Ltd. manufacturing) that applied with the alkyd melamine, and placement after 1 day in 80 ℃ baking oven, before solidity test and measure respectively afterwards and compare peel adhesion.As a result, the bounding force retention value of any bonding film all is about 70-85% after test.Measure peel adhesion by JIS Z 0237 (1980), wherein peel angle is 90 °, and peeling rate is 300mm/sec.Measuring result is listed in the table 1.And, the bonding film of buying with commodity as the reference sample is cured test, measure the bounding force retention value.As a result, this value is 85%.The film that should buy with commodity is the Scotchcal that 3M Co. makes TM" ModelNo.3650 ".Base material is that thickness is the polyvinyl chloride of 50 μ m, and tackiness agent is an acrylic pressure-sensitive adhesive.Show that from these results the bonding coat that the present invention makes has stable in time bounding force, and have high peel adhesion retention value.
Useful part of the present invention
By the present invention, provide a kind of aqueous adhesive composition with following characteristics:
(1) it has enough flowabilities (such as viscosity in suitable scope etc.) applying when operation.
(2) can (do thickly, for example dried weight be 4-100g/m with sufficient thickness2) on the surface with its paint water proofing property object (such as lining etc.).
(3) it can form coating and seldom destroys the adhesive layer that (for example shrink, depression etc.) and thickness seldom change to apply operation through routine.
(4) it can form in time stable adhesive layer of bonding force.
And the bonding film of being made by this binding compositions comprises that above-mentioned coating is few to be destroyed and the adhesive layer of thickness changes little, and it demonstrates stable in time bonding force.
Moreover above-mentioned binding compositions is all on the surface of even easily paint water proofing property object. Therefore, bonding film can make through following process, described process comprises on the release surface with above-mentioned binding compositions paint lining, remove the solvent mixture and obtain an adhesive layer, substrate layer is pressed onto on the adhesive layer and base material is sealed to step on the adhesive layer, can improve production efficiency thus.
Embodiment of the present invention had been described already. Claim is as follows.

Claims (6)

1. aqueous adhesive composition, it comprises:
The mixed solvent of water and cosolvent dissolves or is dispersed in adhesive component in the mixed solvent, and cosolvent comprises the compd A that is expressed from the next:
Figure A9619105400021
R wherein 1Be methyl or ethyl; R 2For containing the alkylidene group of 3-5 carbon atom.
2. aqueous adhesive composition as claimed in claim 1, wherein the water in 100 weight parts is benchmark, the amount of contained compd A is the 20-100 weight part.
3. aqueous adhesive composition as claimed in claim 1, wherein the viscosity of binding compositions is 500-10,000cps.
4. the bonding film of a bonding coat that comprises membranaceous base material and form on base material, described bonding coat are that the mixed solvent in the evaporation aqueous adhesive composition as claimed in claim 1 obtains.
5. bonding film as claimed in claim 4, wherein the modulus of compression of the bonding coat that records in the time of 20 ℃ is 1 * 10 4To 10 7Dyne/cm 2
6. a manufacturing is by membranaceous base material, bonding coat and the lining method with the mutual bonding film of being formed laminated together of this order, and it comprises the steps:
(a) on the release surface with aqueous adhesive composition paint lining as claimed in claim 1, at least one surface of lining is a release surface, removes the mixed solvent in the composition, forms bonding coat; With
(b) membranaceous substrate layer is pressed onto on the above-mentioned bonding coat sealing.
CN96191054A 1995-09-11 1996-08-08 Aqueous adhesive composition, adhesive film and process for producing it Pending CN1165528A (en)

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JP7232418A JPH0987608A (en) 1995-09-11 1995-09-11 Water-base adhesive composition, adhesive film, and production of adhesive film
JP232418/95 1995-09-11

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CN1165528A true CN1165528A (en) 1997-11-19

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KR970707216A (en) 1997-12-01
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AU6767696A (en) 1997-04-01
JPH0987608A (en) 1997-03-31
EP0791030A1 (en) 1997-08-27

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