AU1266300A - Rubber adhesive based on a stabilized polyvinyl acetate dispersion - Google Patents
Rubber adhesive based on a stabilized polyvinyl acetate dispersion Download PDFInfo
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- AU1266300A AU1266300A AU12663/00A AU1266300A AU1266300A AU 1266300 A AU1266300 A AU 1266300A AU 12663/00 A AU12663/00 A AU 12663/00A AU 1266300 A AU1266300 A AU 1266300A AU 1266300 A AU1266300 A AU 1266300A
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- AU
- Australia
- Prior art keywords
- adhesive
- weight
- whole
- polyvinyl alcohol
- polyvinyl acetate
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Classifications
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- 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
- C09J131/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an acyloxy radical of a saturated carboxylic acid, of carbonic acid, or of a haloformic acid; Adhesives based on derivatives of such polymers
- C09J131/02—Homopolymers or copolymers of esters of monocarboxylic acids
- C09J131/04—Homopolymers or copolymers of vinyl acetate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2666/00—Composition of polymers characterized by a further compound in the blend, being organic macromolecular compounds, natural resins, waxes or and bituminous materials, non-macromolecular organic substances, inorganic substances or characterized by their function in the composition
- C08L2666/02—Organic macromolecular compounds, natural resins, waxes or and bituminous materials
- C08L2666/04—Macromolecular compounds according to groups C08L7/00 - C08L49/00, or C08L55/00 - C08L57/00; Derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2666/00—Composition of polymers characterized by a further compound in the blend, being organic macromolecular compounds, natural resins, waxes or and bituminous materials, non-macromolecular organic substances, inorganic substances or characterized by their function in the composition
- C08L2666/28—Non-macromolecular organic substances
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Materials For Medical Uses (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The aim of the invention is to simplify the production of conventional rubber adhesives based on stabilized polyvinyl acetate dispersions and to improve the drying and adhesive properties thereof. To these ends, the concentration of the protective colloid polyvinyl alcohol or starch ether is increased without adding an aqueous polymer solution of polyvinyl alcohol or dextrin. Adding an interfacially active substance accelerates the activation of the adhesive after drying the same at temperatures above 160 DEG C.
Description
WO 00/27943 1 PCT/EP99/08106 Rubber Adhesive Based on a Stabilized Polyvinyl Acetate Dispersion "Adhesive Based on a Polyvinyl Acetate Dispersion" This invention relates to an adhesive based on a polyvinyl acetate dispersion stabilized with protective colloids, to its production and to its use. There are numerous publications concerned with the production of polyvinyl acetate dispersions and their use. DE 33 23 851 describes an 5 aqueous polymer dispersion of vinyl esters and optionally 50% by weight of other ethylenically unsaturated compounds in the presence of starch ethers as protective colloid. In addition, other protective colloids, for example polyvinyl alcohol, may be added. However, these auxiliaries are preferably added - if at all - to the final dispersion, i.e. on completion of polymerization, 10 because otherwise they can often interfere undesirably with the polymerization process or can cause unwanted changes in the products. These known dispersions are used as such for the production of adhesives, more particularly for paper and films, and for the waterproof gluing of wood. However, they are preferably used for the production of redispersible 15 polymer powders for the production of wallpaper adhesives. There is no mention of their use as a gumming adhesive. Gumming is understood to be the coating of a substrate with a water-reactivatable adhesive. The substrate is generally a water-absorbing product, more particularly of paper or paperboard. It may be used, for 20 example, as a postage stamp, envelope, label, adhesive strip, etc. The gumming adhesive is applied to the substrate in liquid form and then dried, losing its tackiness in the process. Only when moistened with water does it become tacky again. Gumming adhesives are normally based, for example, on gluten or starch derivatives (dextrin), although fully synthetic WO 00/27943 2 PCT/EP99/08106 polymers, for example polyvinyl alcohol and polyvinyl acetate, may also be used. The production of gumming adhesives based on a polyvinyl acetate dispersion is described in DD 275 069. According to this document, an 5 aqueous solution of polyvinyl alcohol and, preferably, glycerol have to be added to the polyvinyl acetate dispersion. The remoistenable adhesive has the following composition by weight: 50 to 60% of a 20% polyvinyl alcohol solution, 40 to 50% of a polyvinyl acetate dispersion and 0 to 5% by weight of glycerol. The glycerol acts as a plasticizer and the polyvinyl alcohol 10 improves reactivation by moisture. The production of a gumming adhesive is therefore complicated because the auxiliaries are added in a separate process step. In addition, some but not all of the requirements a gumming adhesive is expected to meet are satisfied to the required extent. This applies in particular to the stay-flat behavior of the gummed paper, to its 15 blocking resistance and to the setting time after remoistening. German patent application DE 196 36 590.2 describes an adhesive based on a stabilized polyvinyl acetate dispersion which is characterized in that it contains the following components: A) 35 to 45% by weight, based on the adhesive as a whole, of a 20 copolymer of vinyl acetate and 25 to 60% by weight, based on the monomers as a whole, of at least one ester of fumaric, maleic, acrylic and/or methacrylic acid, the alkyl group being branched or unbranched and being said to contain 4 to 18 carbon atoms and B) a protective colloid, namely 25 a) 0 to 30% by weight, based on the adhesive as a whole, of at least one nonionic starch ether and/or b) 0 to 12% by weight, based on the adhesive as a whole, of polyvinyl alcohol. There is no reference to the problem which arises when drying is carried 30 out at high temperatures, for example above 160 0 C, or to its solution.
WO 00/27943 3 PCT/EP99/08106 Accordingly, the problem addressed by the present invention was to provide a gumming adhesive which would be easy to produce, which would dry more quickly after application of its solution and which would become tacky again more quickly when moistened, even if it has been dried at more 5 than 160 0 C, but which would be largely blocking-resistant. In broad terms, the problem addressed by the invention was to provide a gumming adhesive with improved production, application and performance properties. The solution to this problem is defined in the claims and is 10 essentially based on the fact that, to produce the gumming adhesive, an aqueous polymer solution, more particularly a solution of polyvinyl alcohol and starch ether, is not added to the polyvinyl acetate dispersion, instead the polyvinyl acetate dispersion is prepared under special conditions, among which the nature and quantity of the protective colloid are 15 particularly important. Preparation of the polyvinyl acetate dispersion under particular conditions results in a gumming adhesive based on a stabilized polyvinyl acetate dispersion which is characterized by the following components: A) 35 to 45% by weight, based on the adhesive as a whole, of a 20 copolymer of vinyl acetate and 25 to 50% by weight, based on the monomers as a whole, of at least one alkyl ester of fumaric, maleic, acrylic and/or methacrylic acid, the alkyl groups optionally being branched or unbranched and having to contain 4 to 18 and more particularly 4 to 8 carbon atoms, 25 B) at least one protective colloid, namely a) 0 to 30% by weight and more particularly 15 to 25% by weight, based on the adhesive as a whole, of a nonionic starch ether and/or WO 00/27943 4 PCT/EP99/08106 b) 0 to 12% by weight, more particularly 8 to 12% by weight and above all 10.5 to 12% by weight, based on the gumming adhesive as a whole, of a polyvinyl alcohol, C) 0.05 to 10% by weight of at least one surface-active agent. 5 The solids content is from 50 to 60% by weight and preferably from 55 to 60% by weight, based on the gumming adhesive. Suitable "nonionic starch ethers" are, in particular, hydroxyalkyl ether starches, for example hydroxyethyl, hydroxypropyl and hydroxybutyl ether starches. The alkyl chains contain from 2 to 8 carbon atoms and, more 10 particularly, from 2 to 4 carbon atoms. Both degraded starches, for example starches degraded by acidic hydrolysis, and native starches may be used as starting products for the starches mentioned. In general, no particular requirements have to be satisfied in selecting these starting products. Thus, virtually any starch of vegetable origin, for example corn 15 starch, wheat starch, potato starch, tapioca starch, rice starch, sago starch and millet starch, may be used. Basically, hydroxyalkylation is a known process and, for this reason, need not be described in any further detail here. The degrees of substitution are also not crucial to the success of the process and, in many cases, degrees of substitution of about two are 20 sufficient. Many of the starch derivatives suitable for use in accordance with the invention are commercially available. The nonionic starch ether is preferably used as sole protective colloid in a quantity of 15 to 30% by weight and, more particularly, in a quantity of 15 to 35% by weight. 25 It is known that polyvinyl alcohol can be used in a quantity of about 2 to 5% by weight as protective colloid in the polymerization.of polyvinyl acetate. According to the invention, this concentration should be increased despite the preconceived notion that this might adversely affect the properties of the polyvinyl acetate. It has surprisingly been found that 30 reactivation of the gum after moistening takes place just as quickly when 8 WO 00/27943 5 PCT/EP99/08106 to 12% by weight of polyvinyl alcohol are added during the polymerization process as when more than 10% by weight of polyvinyl alcohol is sub sequently added to the final polyvinyl acetate dispersion. Accordingly, the polyvinyl alcohol content of the sodium acetate 5 dispersion to be used in accordance with the invention is from 0 to 12% by weight, based on the gumming adhesive as a whole, preferably from 8 to 12% by weight and more preferably from 10.5 to 12% by weight. The percentage content can be larger during the polymerization process because, after polymerization, the final specification requirements are 10 fulfilled by addition of water. According to the invention, the polyvinyl acetate is a copolymer of vinyl acetate and 25 to 50% by weight, based on the monomers as a whole, of at least one mono- or di-ester of fumaric, maleic, itaconic, crotonic, acrylic and/or methacrylic acid, the alkyl chain either being linear 15 or branched and having to contain from 4 to 18 and, more particularly, from 4 to 8 carbon atoms. Preferred alkyl groups are ethyl, propyl, butyi and ethylhexyl or octyl groups. The preferred comonomer is an alkyl ester of maleic acid, more particularly monooctyl maleate. Terpolymers of the above-mentioned comonomers may also be 20 used. The third comonomer is used in a quantity of up to 10% by weight and preferably in a quantity of 0.1 to 2% by weight, based on the comonomers. The copolymerization may largely be carried out by the process described in DE-OS 33 23 851, the composition of the mixture having to be 25 such that a solids content of 50 to 60% by weight and, more particularly, 55 to 60% by weight, based on the dispersion to be used as a.gumming adhesive in accordance with the invention, is obtained. More particularly, the polyvinyl acetate may be produced by suspension or emulsion polymerization, preferably by emulsion polymerization. The particular WO 00/27943 6 PCT/EP99/08106 conditions of this process are generally known, cf. in particular DE 33 23 861. The process for producing aqueous polymer dispersions comprises in particular polymerizing vinyl esters together with 25 to 50% by weight, 5 based on the total weight of the monomers, of other ethylenically unsaturated compounds with at least partly water-soluble initiators which yield free radicals at reaction temperatures of +10 to +100*C in the presence of hydroxyalkylated starch and/or the other stabilizer, polyvinyl alcohol, at most one third of the monomer total being introduced at the 10 beginning and the rest of the monomers being added during the polymerization reaction. Besides the polyvinyl acetate, the gumming adhesive according to the invention contains 0.05 to 10% by weight and more particularly 0.1 to 1.5% by weight of at least one surface-active agent, based on the adhesive 15 as a whole. Surface-active agents are substances which reduce the interfacial tension to water. Generally, they contain a hydrophilic group and a hydrophobic group, more particularly a lipophilic group or groups. Actual examples of such substances are anionic surfactants, such as fatty alcohol sulfates, fatty alcohol ether sulfates and alkyl phenolether sulfates and alkyl 20 benzene or alkylaryl sulfonates and sulfosuccinates, and nonionic surfactants, such as fatty alcohol polyglycol ethers, fatty alcohol EO/PO adducts and alkyl phenol EO/PO adducts. The surface-active agent is added during the polymerization. The gumming adhesive according to the invention additionally 25 contains up to 10% by weight and more particularly 1 to 5% by weight of at least one hygroscopic substance, based on the adhesive as a whole. A hygroscopic substance in the context of the invention is one which attracts moisture from the air up to a certain equilibrium when stored under normal conditions. The hygroscopic substances are preferably organic substances 30 such as, for example, sugars, glycerol or polyethylene glycol.
WO 00/27943 7 PCT/EP99/08106 Auxiliaries may also be added to meet special requirements and include, for example, dyes, perfumes, biocides, etc. Since they are only optionally present in the adhesive, they are not included in the weight related expression "based on the adhesive as a whole". 5 There is no need to add an aqueous polymer solution, for example of polyvinyl alcohol or dextrin, in order to improve activation behavior after moistening, nor is such an addition appropriate. The gumming adhesive according to the invention is distinguished by quick drying and by quick activation after moistening - despite drying 10 temperatures of more than 160 0 C - and also by a very intensive adhesive effect by comparison with known gumming adhesives. A particularly surprising feature is that, in spite of this, it still gives a high-gloss film characterized by high blocking resistance. Last but not least, the production of the gumming adhesive according to the invention is easier 15 because, for example, polyvinyl alcohol only has to be added once. The adhesive according to the invention increases the operational reliability of automatic inserting machines during the sealing of envelopes because it can be activated sufficiently quickly irrespective of the drying conditions. The other properties are not impaired. Thus, gloss ranges from 20 glossy to high-gloss, the color is slightly yellowish, blocking resistance at 40 0 C is at least 85% and the stay-flat behavior of a test paper with a 40 pm thick adhesive film is good to very good. The invention is illustrated by the following Examples. 25 A) Production of the polyvinyl acetate dispersion a) Prior art In a reaction vessel equipped with a stirrer, thermometer, two metering vessels and a reflux condenser, a pH buffer, 22.5 kg of a modified 30 potato starch (hydroxypropyl ether) and 0.05 kg of a commercial defoamer WO 00/27943 8 PCT/EP99/08106 are dissolved at >800C in 36.275 kg of deionized water. A solution of 10 kg of deionized water and 0.5 kg of K2S208 is separately prepared at room temperature. This solution is placed in metering vessel 1. A mixture of 24.26 kg of vinyl acetate and 16.165 kg of dibutyl maleate is prepared at 5 room temperature in metering vessel 2. The polymerization reaction begins at a temperature of >65 0 C by simultaneous introduction of the components from metering vessels 1 and 2 into the reaction vessel. After the onset of polymerization, the continuous introduction from vessels 1 and 2 is controlled so that a reaction temperature of 80 to 850C is established. 10 The reaction time is about 3.5 to 4 h. On completion of polymerization, the characteristic data of the dispersion are adjusted with water to a solids content of about 55% by weight. 15 b) Invention Besides water, modified potato starch and defoamer, the solution contains 0.2 kg of sulfosuccinate. Besides vinyl acetate and dibutyl - maleate, the monomer mixture contains 0.125 kg of acrylic acid. 20 B) Properties The polyvinyl acetate dispersions described above were used unchanged as a gumming adhesive. The properties are set out in the following Table and were determined as follows: 25 - Viscosity was determined by the Brookfield method according to ISO 2555 under the following conditions: RVT, spindle 4, 20 r.p.m., 25*C. - The solids content was determined in accordance DIN 53189, Method C, after 3 hours at 1050C by weighing out. 30 - To determine the drying time, a 40 pm thick film of a dispersion having a solids content of 55% by weight was applied using a box knife coater WO 00/27943 9 PCT/EP99/08106 and was dried in non-circulated air at 230C/55% relative air humidity. The drying time (wet tack time) is the time elapsing from application to the moment when the coating is no longer tacky. This time was determined by different methods according to the substrates used 5 (glass plate or 70 g/m 2 writing paper according to DIN 19307, use class 4a): In the case of the glass plate, the degree of drying of an adhesive film can be visually determined by sliding a finger over the surface of that film. As drying progresses, the finger test is repeated at 10 approximately2 second intervals until the film surface shows no sign of damage. This time is measured in seconds and represents the drying time of an adhesive on glass. In the case of writing paper, the time in seconds after which the surfaceof the adhesive is dry is determined by pressing one corner at a 15 time ofa ZK form folded crosswise 4 times onto the film surface with the thumb. The adhesive is dry when the paper does not lift and tear. The time measured in seconds is the drying time of an adhesive on paper. 20 In order to imitate the rigorous drying conditions in the production of envelopes, the adhesive film dried at room temperature was additionally exposed for 10 secs. to temperatures of 150 to 2000C, after which the setting time after remoistening and wettability were determined. To determine wettability, the heat-treated adhesive film was wiped with a 25 sponge soaked with water and its wetting behavior was visually determined: = water film over entire adhesive film = water film over ca. 50 to 80% of the adhesive film (-) = no water film WO 00/27943 10 PCT/EP99/08106 - To determine the setting time after remoistening, a dry adhesive film of a 40 pm thick layer of a 55% by weight dispersion on a paper (see drying time) is moistened with water using a sponge. Strips of paper (80 g, wood-free) are applied to the adhesive thus reactivated. The 5 strips are removed every half second. The time at which fibers are torn out when the strip of paper is removed counts as the end of the setting time. - In order to determine the beginning of blocking, 40 pm thick films were applied to writing paper using a surface coater and dried for 24 hours 10 under ambient conditions. The paper is then cut into pieces measuring 10 x 10 cm. An uncoated sheet of paper of the same type and size is placed on a coated sheet. The stack obtained should consist of 15 coated sheets and 15 uncoated sheets. Two equally large pieces of paperboard are added as top and bottom covers. The stack is then 15 placed in a conditioning cabinet (40*C/70% relative humidity) and a weight of 1 kg is attached. The test specimen remains in this atmosphere for 48 hours. For inspection, the weight is removed and the stack is examined for blocking. Blocking is said to have started when the adhesive film becomes tacky. If there is no sign of blocking, 20 the weight is re-attached to the test specimen. The relative air humidity is then increased by 5%, followed by storage for another 48 hours. This procedure is continued until blocking occurs. - The quantity applied represents the quantity of solids per unit area. - The pH value is determined with a glass electrode in accordance with 25 DIN 53785/ISO 1148. - To determine gloss, an Erichsen surface coater and writing paper (70 g/m 2 ; for example "Multi Bright", a product of Stora Fine Papier, NYMOLLA, SE) are required. A 40 pm thick, 6 cm wide strip of adhesive is applied by coating knife to a sheet of writing paper 30 measuring 20 x 20 cm. It is important that the strip of adhesive is WO 00/27943 11 PCT/EP99/08106 applied without interruption in the direction of travel of the paper. After drying (ca. 15 minutes), the adhesive film is evaluated for gloss. The gloss is differentiated as follows: Standard 5 very high gloss DH 4094 high gloss DH 4093 glossy DH 4084 mat A 4520 Gloss was always evaluated against one of the above standards. 10 - To determine stay-flat behavior, a 40 pm thick, 6 cm wide strip of adhesive (55% dispersion) is applied by coating knife to a 20 x 20 cm sheet of writing paper (80 g/m 2 , wood-free). It is important that the strip of adhesive is applied without interruption in the direction of travel of the paper. The adhesive is dried at 23 0 C/55% relative air humidity. 15 The stay-flat behavior should be evaluated after ca. 5 minutes, 1 hour and 24 hours. It is important to ensure that the coated papers are not exposed to circulated air. The evaluation should also include a direct comparison with a standard adhesive because the stay-flat behavior changes as a function of ambient temperatures and atmospheric 20 humidity. The stay-flat behavior is differentiated according to the following criteria: - paper stays flat - paper curls slightly - paper curls fairly sharply 25 - paper rolls up - paper turns wavy - paper develops folds Adhesin A 4520 of Henkel KGaA is used as a standard adhesive with very good stay-flat behavior. The stay-flat evaluation should be carried 30 out at the same ambient temperature and atmospheric humidity.
WO 00/27943 12 PCT/EP99/08106 Other properties, such as color and the beginning of blocking, were in a favorable range. Table 1. Characterization and processing/performance properties Example a) Example b) Characteristics: Viscosity [mPas] 6250 6400 pH value 4.0 4.1 Solids [% by weight] 56 57 Properties: Drying times [mins.] on paper 1.4 1.3 on glass 3.0 2.5 Setting time after remoistening [secs.] - drying at 230 only 2.5 2.5 - additional drying for 10 secs. a) at 150 0 C 2.5 1.5 b) at 160*C 3 1.5 c) at 170*C a) 1.5 d) at 180*C a) 2 e) at 190 0 C a) 2 f) at 200*C a) 2 a) There could be no question of wetting (-). No water film was formed, only water droplets, as on siliconized paper for example. By contrast, the film of the adhesive according to the invention was completely covered with a film of water ( D) at all temperatures.
Claims (10)
1. An adhesive based on a stabilized polyvinyl acetate dispersion, characterized in that it contains the following components: A) 35 to 45% by weight, based on the adhesive as a whole, of a 5 copolymer of vinyl acetate and 25 to 50% by weight, based on the monomers as a whole, of at least one alkyl ester of fumaric, maleic, itaconic, crotonic, acrylic and/or methacrylic acid, the alkyl groups optionally being branched or unbranched and having to contain 4 to 18 carbon atoms, 10 B) a protective colloid, namely a) 0 to 30% by weight, based on the adhesive as a whole, of a nonionic starch ether and/or b) 0 to 12% by weight, based on the gumming adhesive as a whole, of polyvinyl alcohol, 15 C) 0.05 to 10% by weight of at least one surface-active agent.
2. An adhesive as claimed in claim 1, characterized in that the comonomer is an alkyl ester of maleic acid containing 4 to 8 carbon atoms.
3. An adhesive as claimed in claim 1, characterized in that the copolymer is a terpolymer of vinyl acetate and 25 to 50% by weight of a 20 second and up to 10% by weight of a third comonomer.
4. An adhesive as claimed in claim 1, 2 or 3, characterized in that the protective colloid is a nonionic starch ether from the following group: hydroxyethyl, hydroxypropyl or hydroxybutyl ether starch.
5. An adhesive as claimed in at least one of claims 1 to 4, 25 characterized in that the nonionic starch ether makes up from 15 to 25% by weight of the adhesive as a whole.
6. An adhesive as claimed in at least one of claims I to 5, characterized by a percentage polyvinyl alcohol content of 8 to 12% by weight and, more particularly, 10.5 to 12% by weight, based on the 30 adhesive as a whole. WO 00/27943 14 PCT/EP99/08106
7. An adhesive as claimed in at least one of the preceding claims, characterized in that the solids content is from 50 to 60% by weight and preferably from 55 to 60% by weight, based on the adhesive as a whole.
8. A process as for the production of the adhesive claimed in at least 5 one of the preceding claims, characterized in that the copolymerization of the vinyl acetate is carried out in the presence of the surface-active agent and the entire quantity - more particularly 8 to 38% by weight, based on the adhesive as a whole, preferably on the polyvinyl acetate dispersion - of the nonionic starch ether and/or polyvinyl alcohol. 10
9. A process as claimed in claim 8, characterized in that, on completion of the copolymerization, no aqueous polymer solution and, in particular, no solution of polyvinyl alcohol or dextrin is added to the polyvinyl acetate dispersion.
10. The use of the adhesive claimed in at least one of the preceding 15 claims for gumming, more especially in automatic inserting machines.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19850887 | 1998-11-05 | ||
DE19850887 | 1998-11-05 | ||
PCT/EP1999/008106 WO2000027943A1 (en) | 1998-11-05 | 1999-10-27 | Rubber adhesive based on a stabilized polyvinyl acetate dispersion |
Publications (2)
Publication Number | Publication Date |
---|---|
AU1266300A true AU1266300A (en) | 2000-05-29 |
AU763054B2 AU763054B2 (en) | 2003-07-10 |
Family
ID=7886706
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU12663/00A Ceased AU763054B2 (en) | 1998-11-05 | 1999-10-27 | Rubber adhesive based on a stabilized polyvinyl acetate dispersion |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1127097B1 (en) |
AT (1) | ATE274041T1 (en) |
AU (1) | AU763054B2 (en) |
DE (2) | DE59910303D1 (en) |
WO (1) | WO2000027943A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005010446A1 (en) * | 2005-03-08 | 2006-09-14 | Henkel Kgaa | Gumming adhesive based on a filler-containing polymer dispersion |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0705896A1 (en) * | 1994-10-03 | 1996-04-10 | National Starch and Chemical Investment Holding Corporation | Synthetic remoistenable adhesive compositions |
AU726971B2 (en) * | 1996-09-10 | 2000-11-30 | Henkel Kommanditgesellschaft Auf Aktien | Use of an adhesive dispersion for gumming in inserting machines |
-
1999
- 1999-10-27 EP EP99955888A patent/EP1127097B1/en not_active Expired - Lifetime
- 1999-10-27 AT AT99955888T patent/ATE274041T1/en not_active IP Right Cessation
- 1999-10-27 AU AU12663/00A patent/AU763054B2/en not_active Ceased
- 1999-10-27 WO PCT/EP1999/008106 patent/WO2000027943A1/en active IP Right Grant
- 1999-10-27 DE DE59910303T patent/DE59910303D1/en not_active Expired - Lifetime
- 1999-10-28 DE DE19951803A patent/DE19951803A1/en not_active Withdrawn
Also Published As
Publication number | Publication date |
---|---|
AU763054B2 (en) | 2003-07-10 |
DE19951803A1 (en) | 2000-05-11 |
EP1127097B1 (en) | 2004-08-18 |
EP1127097A1 (en) | 2001-08-29 |
WO2000027943A1 (en) | 2000-05-18 |
ATE274041T1 (en) | 2004-09-15 |
DE59910303D1 (en) | 2004-09-23 |
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