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WO2001010966A1 - Adhesif desodorisant - Google Patents

Adhesif desodorisant Download PDF

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Publication number
WO2001010966A1
WO2001010966A1 PCT/US2000/020949 US0020949W WO0110966A1 WO 2001010966 A1 WO2001010966 A1 WO 2001010966A1 US 0020949 W US0020949 W US 0020949W WO 0110966 A1 WO0110966 A1 WO 0110966A1
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WO
WIPO (PCT)
Prior art keywords
weight
composition
adhesive
styrene
molecular sieve
Prior art date
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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PCT/US2000/020949
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English (en)
Inventor
Charles J. Wasserman
Michael H. Simon
Harold G. Story
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bostik Inc
Original Assignee
Ato Findley Inc
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Filing date
Publication date
Application filed by Ato Findley Inc filed Critical Ato Findley Inc
Priority to AU65076/00A priority Critical patent/AU6507600A/en
Publication of WO2001010966A1 publication Critical patent/WO2001010966A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02—Non-macromolecular additives
    • C09J11/04—Non-macromolecular additives inorganic

Definitions

  • the present invention relates to adhesives, and more particularly to a water-based adhesive containing an adsorption agent or scavenger to eliminate undesirable odors and flavors from the adhesive.
  • a variety of solutions have been proposed for eliminating or at least inhibiting undesirable odors and flavors in such applications.
  • the solutions proposed are in one of two categories.
  • One approach is to mask the undesirable odors and/ or tastes by adding a substance with a relatively pleasant odor and/ or taste which overpowers the undesirable odor and/or taste with the dominant pleasant odor and/or taste.
  • These types of compounds have been problematic in that they may add their own strong odor and/ or taste which may result in yet a further undesirable odor and/or taste.
  • the second approach is to sequester the undesired odor and/ or taste in a non-volatile form either by chemical reaction, adsorption or absorption on a substance that sorbs the undesirable odor and/ or taste.
  • adsorbents such as zeolites, diatomaceous earth, clays, activated carbons such as activated charcoal or active carbon, silica gel, activated alumina, kieselguhr, Fuller's earth and other clay minerals, either alone or in combination, have been incorporated into certain polymer or copolymer films with varying results.
  • zeolites have been used as the adsorbent for air filter elements, and as a component in pet litter to control odors. Also, it has been used in polymer and copolymer films as noted above to control odors and flavors.
  • zeolites have not been employed in water-based adhesives since zeolites are known to absorb water. Thus, it was conventionally believed that if zeolites were incorporated with water-based adhesives, one would obtain an undesirable increase in viscosity or thickening of the adhesive and/ or block the pores in the zeolite with water and thereby not permit the pores to be available for adsorption of anything else.
  • the object of the present invention is to reduce or eliminate undesirable odors and/ or flavors in water-based adhesives so that certain of such adhesives, not here-to-fore capable of being used, can now be employed for food packaging and disposable non-woven applications as well as other applications.
  • the present invention provides an adhesive composition comprising a water- based adhesive, and an adsorption agent.
  • the preferred adsorption agent is a siliceous molecular sieve which is manufactured or subsequently treated to have high hydrophobicity.
  • the preferred molecular sieve is a zeolite having a pore diameter of at least 4 Angstroms, preferably at least 6 Angstroms, and having a water adsorption capacity of less than 10% by weight at 25°C, most preferably less than 6% by weight.
  • the adsorption agent will comprise at least 0.1-20% by weight of the composition, more preferably at least 0.5% by weight of the composition.
  • the amount of adsorbent in the adhesive composition will depend upon various factors including the particular polymer or copolymer used in the adhesive, the films used and the coatings or inks used in the structure.
  • a water- based adhesive contains an adsorption agent in the form of a siliceous molecular sieve for reducing or eliminating undesirable odors and flavors from adhesives.
  • the preferred molecular sieve is a zeolite having a pore size of at least 4 Angstroms, preferably of at least 6
  • Angstroms and manufactured or subsequently treated to have a sorption capacity for water of less than 10% by weight at 25°C, and preferably, less than 6% by weight at 25°C.
  • an adhesive may be formulated having the following composition:
  • Zeolite(s) (Molecular Sieves(s)) 0.1 to 20
  • the components totaling 100% by weight of the water-based adhesive composition.
  • the preferred embodiment of the adhesive composition comprises the following: Ingredient % Range by Weight
  • Stabilizer(s) 0.0 to 1.0
  • Zeolite(s) (Molecular Sieve(s)) 0.1 to 5.0
  • the components totaling 100% by weight of the adhesive composition.
  • the adhesive composition may contain other additives or components which can modify the adhesive properties of, or add adhesive properties to, the above basic adhesive composition.
  • Such components may be those conventionally employed in the art for various purposes in adhesive compositions, such as, for example, dyes, pigments, antioxidants, and the like. When such optional ingredients are employed, their usage is generally in the range or loading level typically utilized in the art for such purposes, as will hereinafter be described.
  • the odorous compounds suitably treated in the present process can be any organic molecular species having pleasant as well as unpleasant odors as perceived by human beings. Accordingly, since the greatest benefit of odor control involves the elimination of those which are generally unpleasant, it is preferred that the organic compounds treated in the present process are classifiable in one of the following subgeneric classes: (a) saturated or unsaturated aliphatic acids and aldehydes containing a single -COOH or -CHO group and containing less than 12 carbon atoms, such as acetic, propionic, butyric, valeric, isovaleric (alpha- methyl-butyric), caproic and caprylic acids.
  • saturated or unsaturated aliphatic acids and aldehydes containing a single -COOH or -CHO group and containing less than 12 carbon atoms such as acetic, propionic, butyric, valeric, isovaleric (alpha- methyl-butyric), caproic and caprylic acids
  • organic sulfur-containing compounds in which the valence of the sulfur atom is less than 6, especially those in which the valence of sulfur is 2, such as the sulfhydryl compounds, i.e. mercaptans and thiophenols of the general formula R-S-H wherein "R” represents an alkyl or alkenyl group containing from 1 to 8 carbon atoms or a phenyl or substituted phenyl group containing from 6 to 9 carbon atoms; the sulfides of the general formula R-(S) n -R wherein n has a value of from 1 to 4 and "R" represents the same groups as in the case of the aforesaid sulfhydryl compounds; the thioaldehydes and thioketones of the general formula
  • R' is hydrogen or R, and R is an alkyl or alkenyl group containing from 1 to 8 carbon atoms or a phenyl or substituted phenyl group containing from 6 to 9 carbon atoms; and (c) organic nitrogen-containing compounds in which the valence of the nitrogen atom is 3, such as the aliphatic amines of the general formula R 2 NR' wherein R is hydrogen and R' is an alkyl or alkenyl group having from 1 to 6 carbon atoms; and the heterocyclic nitrogen compounds containing an imino group in which the nitrogen atom is a part of the heterocyclic ring, particularly the pyrroles, and especially the pyrroles in which the alpha position is unsubstituted, and the condensed pyrroles which are the indoles, i.e. indole per se and the substituted derivatives thereof.
  • the siliceous molecular sieves suitably employed in the practice of the invention include the microporous crystalline aluminosilicates, i.e. the zeolitic molecular sieves as well as the so-called silica polymorphs. With respect to the latter compositions, their crystal lattices are ideally formed entirely of SiO 2 tetrahedral units, but the as-synthesized forms commonly contain at least trace amounts of aluminum derived from aluminum impurities in the synthesis reagents.
  • the alumino silicate molecular sieves comprise the large class of well-known crystalline zeolites.
  • high-silica molecular sieves are either commercially available or are prepared by methods, well-known in the art, involving direct hydrothermal synthesis or involving certain types of crystal lattice dealuminations. Suitable and preferred siliceous molecular sieves are commercially available under the trademark "Abscents" from UOP.
  • the amount of adsorbent in the polymer or copolymer composition according to the invention will depend upon various factors including the particular copolymer or polymer used. Typically the adsorbent agent will comprise at least 0.1% by weight of the composition, more typically 0.1% to 20% by weight of the composition. The preferred range is 1% to 5% by weight of the adhesive composition.
  • Suitable siliceous molecular sieves are known in the art, see e.g. UOP's "Abscents" noted above, and have a frame-work of tetrahedral oxide units, in which at least 90% of the tetrahedral oxide units are SiO tetrahedra and have a pore diameter greater than 4.0 Angstroms (preferably at least 6.0 Angstroms) and have a sorption capacity for water of less than 10% by weight at 25°C and 4.6 torr (preferably less than 6% by weight).
  • Preferred such sieves will have a framework S1O2/AI2O3 molar ratio greater than 35, more preferably 200 to 500.
  • the water-based adhesive is typically interposed between two or more substrates and functions to bond the substrates together.
  • the adhesive comprises, as a primary ingredient thereof, 20% to 99.9% by weight, preferably 80% to 90% by weight, of a polymer containing one or more monomers which may be polymerized or copolymerized to yield desired adhesive properties.
  • Monomers useful herein include, but are not limited to styrene, methylmethacrylate, vinyl acetate, vinyl chloride, and diphenylmethane diisocyanate.
  • the monomers that can be either homopolymerized or copolymerized to obtain these polymers include but are not limited to:
  • Monomers that produce main chain acyclic carbon polymers such as:
  • dienes that result in polydienes such as neoprene, poly butadiene, polyisoprene, and others;
  • alkenes that result in polyalkenes such as polybutene- 1, polybutylethylene, polyethylene, polyisobutylene, polymethylene, polypropylene, and others;
  • acrylic acid and acrylic acid esters that result in polyacrylics and polyacrylates such as polyacrylic acid, polybenzyl acrylate, polybutyl acrylate, polyethyl acrylate, polycyano acrylates, and others
  • acrylamides that result in polyacrylamides such as polyacrylamide, polybutylacrylamides, polyisopropylacrylamide, and others
  • methacrylic acid and methacrylic acid esters that result in polymethacrylics and polymethacrylates such as polybutylmethacrylate, polyethylmethacrylate, polymethacrylic acid, polymethylmethacrylate, polypropylmethacrylate and others;
  • acrylamides and methacrylamides that result in polyacrylamide and polymethacrylamides such as poly (4- butoxycarbonylphenylmethacrylamide), poly (N-tert- butylmethacrylamide), poly (N-carboxyphenylmethacrylamide), and others;
  • alpha or beta substituted acrylics or methacrylics that result in polyacrylics and polymethacrylics such as polybutychloroaciylate, polybutylcyanoaciylate, polyethylchloroacrylate, and others
  • vinyl ethers and vinyl thioethers that result in polyvinylethers and polyvinyl thioethers such as poly butoxye thy lene, polybutylthiothylene, polyethoxyethylene, polymethoxyethylene, polymethylthioethylene, and others;
  • polystyrene that result in polystyrenes such as polybutylstyrenes, polychlorostyrenes, polyethylstyrenes, polymethylstyrenes, polystyrene, and others;
  • Monomers that produce main chain carbocyclic polymers such as: (a) phenylenes that result in polyphenylenes such as poly (2-bromo- l ,4-phenyleneethylene), poly (2,5-dichloro- l ,4- phenyleneethylene), poly (1 ,4-phenyleneethylene), and others;
  • polyoxides such as polyoxyethylenes, polyoxymethylene, polyoxypropylene, and others;
  • polycarbonates such as poly(oxycarbonyloxy-2-chloro- 1 ,4-phenyleneisopropylidene-3-chloro- 1 ,4-phenylene) , poly(oxycarbonyloxy-2,2,3,3,4,4,5,5-octafluorohexamethylene), poly(oxycarbonyloxy- 1 ,4-phenylenecyclohexylidene- 1 ,4-phenylene) and others;
  • polyesters such as poly(ethylene adipate), poly(ethylene terephthalate) , poly(oxyethyleneoxyadipoyl) and others;
  • polyanhydrides such as poly(oxycarbonyl- 1 ,4- phenylenehexafluorotrimethylene- 1 ,4-phenylene-carbonyl) , poly(oxycarbonyl- 1 ,4-phenylenepentamethylene- 1 ,4-phenylenecarbonyl) , poly(oxyisophthaloyl), poly(methacrylic anhydride) and others;
  • polyamides such as poly(imino-5-tert- butylisophthaloyliminomethylene- 1 ,4-phenylenemethylene), poly(iminocarboxyl- 1 ,4-cyclohexylenemethylene) , poly(iminoisophthaloyliminohexamethylene) and any of the numerous nylons known in the art; and others;
  • polyacetals such as poly(2-ethyl-l,3-dioxa-4,6- cyclohexylenemethylene), poly(vinyl acetal), poly (vinyl butyral) and others; and
  • polypiperazines such as poly(l,4-piperazinediyladipoyl), poly(l,4- piperazinediylcarboxyloxyethyleneoxycarbonyl), poly(l,4- piperazinediylisophthaloyl) and others;
  • the polymers useful in the present compositions include a polymer or copolymer containing one or more monomers previously listed, but preferably is selected from SIS (styrene-isoprene- styrene); SBS (styrene- butadiene-styrene); SEBS (styrene-ethylene-butylene-styrene); EVA (ethylene-vinyl acetate); APAO (amorphous polyalpha olefin); SBR (styrene- butadiene-rubber); (VA) vinyl acetate homopolymer; acrylic polymers and copolymers; as well as styrene acrylic polymers and copolymers.
  • SIS styrene-isoprene- styrene
  • SBS styrene- butadiene-styrene
  • SEBS styrene-ethylene-butylene-styrene
  • EVA ethylene
  • the most preferred amount of polymer or blend of polymers is from about 80% to 99.9% by weight.
  • the tackifying resins which are used in the adhesives of the present invention are those which extend the adhesive properties and improve the specific adhesion of the polymer.
  • the present formulation includes from about 0% to about 80% by weight of a tackifying resin.
  • tackifying resin includes: (a) natural and modified rosin such as, for example, gum rosin, wood rosin, tall-oil rosin, distilled rosin, hydrogenated rosin, dimerized rosin and polymerized resin;
  • glycerol and pentaerythritol esters of natural and modified rosins such as, for example, the glycerol ester of pale wood rosin, the glycerol ester of hydrogenated rosin, the glycerol ester of polymerized rosin, the pentaerythritol ester of pale wood rosin, the pentaerythritol ester of hydrogenated rosin, the pentaerythritol ester of tall oil rosin and the phenolic modified pentaerythritol ester of rosin;
  • natural and modified rosins such as, for example, the glycerol ester of pale wood rosin, the glycerol ester of hydrogenated rosin, the glycerol ester of polymerized rosin, the pentaerythritol ester of pale wood rosin, the pentaerythritol ester of hydrogenated rosin,
  • phenolic-modified terpene resins such as, for example, the resin product resulting from the condensation, in an acidic medium, of a terpene and a phenol;
  • polymerized rosins may be secured from Arizona Chemical Company under the trade designations "Sylvatac 295, RX, R85, 95, and 140," respectively. Additionally, Hercules, Inc. produces a suitable dimerized rosin under the trade designation "Demerex.”
  • partially hydrogenated rosins may be secured from Hercules, Inc. under the trade designations “Foral AX” and “Stabelite.” Finally, partial ester of dibasic modified tall oil rosins may be secured from Arizona Chemical Company under the trade designation “Sylvatec 203,” and “Beckacite 4901.”
  • Both water soluble and water insoluble plasticizers can be present in the composition of the present invention either alone or in any desired combination in amounts of about 0% to about 50% by weight in order to provide desired viscosity control without substantially decreasing the adhesive strength or the service temperature of the adhesive. Both liquid and solid plasticizers can be used in the composition of the present invention.
  • the water soluble plasticizers used herein comprise low molecular weight polyethylene glycols, multifunctional alcohol and the general class of surfactants wherein the molecules contain both a hydrophilic group and a hydrophobic group.
  • the hydrophilic group of the molecule generally consists of, but is not limited to, polyethylene glycol, polypropylene glycol, a mono- or di- hydroxylated amino group, an ethoxylated amino radical, polyalkylene glycol esters of carboxylic group, substituted or unsubstituted glycerol, glucose, sucrose and sorbitan groups.
  • the hydrophobic group of the molecule generally consist of, but is not limited to, a hydrocarbon radical such as, alkylphenol groups, dialkyl phenol groups, or a linear or branched aliphatic radicals.
  • the preferred soluble plasticizers include ethoxylated alkyphenols, ethoxylated fatty acids and ethoxylated fatty alcohol having a HLB value in the range of 8.0-20.0.
  • a suitable insoluble plasticizer may be selected from the group which includes dipropylene glycol dibenzoate, pentaerythritol tetrabenzoate; polyethylene glycol 400-di-2-ethylhexoate; 2-ethylhexyl diphenyl phosphate; butyl benzyl phthalate, dibutyl phthalate, dioctyl phthalate, various substituted citrates, and glycerates.
  • Suitable dipropylene glycol dibenzoate and pentaerythritol tetrabenzoate may be purchased from Velsicol Chemical Company of Chicago, Illinois under the trade designations "Benzoflex 9-88 and S-552", respectively.
  • a suitable polyethylene glycol 400-di-2-ethylhexoate may be purchased from C.P. Hall Company of Chicago, Illinois under the trade designation "Tegner 809".
  • a suitable 2-ethylhexyl diphenyl phosphate, and a butyl benzyl phthalate may be purchased from Monsanto Industrial Chemical Company of St. Louis, Missouri under the trade designation "Santicizer 141 and 160", respectively.
  • a suitable plasticizer may be selected from the group which not only includes the usual plasticizing oils, such as mineral oil, but also olefin oligomers and low molecular weight polymers, as well as vegetable and animal oil and derivatives of such oils.
  • the petroleum derived oils which may be employed are relatively high boiling temperature materials containing only a minor proportion of aromatic hydrocarbons. In this regard, the aromatic hydrocarbons should preferably be less than 30% and more particularly less than 15%, by weight, of the oil. Alternately, the oil may be totally non-aromatic.
  • the oligomers may be polypropylenes, polybutenes, hydrogenated polyisoprene, hydrogenated butadiene, or the like having average molecular weights between about 350 and about 10,000.
  • Suitable vegetable and animal oils include glycerol esters of the usual fatty acids and polymerization products thereof.
  • the plasticizer that finds usefulness in the present invention can be any number of different plasticizers but the inventors have discovered that mineral oil such as Kaydol manufactured by Witco, is particularly useful in the present invention.
  • Benzoflex 9-88 a dipropylene glycol dibenzoate manufactured by Velsicol, as also been found to be an appropriate plasticizer.
  • plasticizers have typically been employed to lower the viscosity of the overall adhesive composition without substantially decreasing the adhesive strength and/ or the service temperature of the adhesive.
  • the choice of plasticizer can be useful in formulation for specific end uses (such as wet strength core applications).
  • the present invention may include a stabilizer or antioxidant in an amount of from about 0% to 3% by weight, but preferably from about 0.1% to 1%.
  • the stabilizers which are useful in the adhesive compositions of the present invention are incorporated to help protect the polymers noted above, and thereby the total adhesive system, from the effects of thermal and oxidative degradation which normally occurs during the application of the adhesive as well as in the ordinary exposure of the final product to the ambient environment. Such degradation is usually manifested by a deterioration in the appearance, physical properties and performance characteristics of the adhesive.
  • stabilizers or antioxidants are phosphites, thioesters, substituted amines, mercaptobenzimidazole derivatives, hydroquinone derivatives, hindered phenols and multifunctional phenols, such as sulfur and phosphorus- containing phenols.
  • Particularly useful stabilizers or antioxidants are hindered phenols.
  • Hindered phenols are well known to those skilled in the art and may be characterized as phenolic compounds which also contain sterically bulky radicals in close proximity to the phenolic hydroxyl group thereof.
  • Representative hindered phenols include: l ,3,5-trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxbenzyl) benzene; n-octadecyl-3-(3,5-ditert-butyl-4-hydroxyphenyl) propionate;
  • An especially preferred antioxidant is Irganox 1010, a tetrakis(methylene(3.5-di-tert-butyl-4-hydroxyhydrocinnamate)methane manufactured by Ciba Geigy.
  • These stabilizers may be further enhanced by utilizing, in conjunction therewith; (1) synergists such as, for example, thiodipropionate esters and phosphates; and (2) chelating agents and metal deactivators such as, for example, ethylenediaminetetraacetic acid, salts thereof, and disalicylalpropylenediimine.
  • synergists such as, for example, thiodipropionate esters and phosphates
  • chelating agents and metal deactivators such as, for example, ethylenediaminetetraacetic acid, salts thereof, and disalicylalpropylenediimine.
  • Waxes in the composition of the present invention ranging from 0% to 10% are used to reduce the surface tack of the adhesives without appreciably decreasing their adhesive bonding characteristics. These waxes also are used to reduce the blocking of the composition without effecting the temperature performance.
  • useful waxes are:
  • low molecular weight that is, 1000-6000, polyethylene having a hardness value, as determined by ASTM method D- 1321 of from about 0.1 to 120 and ASTM softening points of from about 150°F to 250°F.
  • polyolefm waxes refers to those polymeric or long-chain entities comprised of olef ⁇ nic monomer units. These materials are commercially available from Eastman Chemical Co. under the trade name "Epolene.” The materials which are preferred to use in the compositions of the present invention have a Ring and Ball softening point of 200°F to 350°F. As should be understood, each of these wax diluents is solid at room temperature.
  • Other useful substances include hydrogenated animal, fish and vegetable fats and oils such as hydrogenated tallow, lard, soya oil, cottonseed oil, castor oil, menhadin oil, cod liver oil, etc., and which are solid at ambient temperature by virtue of their being hydrogenated, have also been found to be useful with respect to functioning as a wax diluent equivalent.
  • hydrogenated materials are often referred to in the adhesives industry as "animal or vegetable waxes.”
  • hydrocarbon oils, especially naphthenic or paraffinic process oils may also be employed herein as the wax diluent.
  • Fillers may also be incorporated into the adhesive composition in amounts ranging from 0% to 80% by weight, preferably 0% to 10% by weight. These are inert in the formulation, and are typically added as an anti-blocking agent. Fillers may include hydrated alumina (AI2O3-3H2O), silicates such as magnesium silicates, aluminum silicate, sodium silicate, potassium silicate and the like, mica, calcium carbonate (CaCO 3 ) and silica. Other commonly employed fillers may also be used as long as they do not materially alter the function of the remaining ingredients in the formulation.
  • hydrated alumina AI2O3-3H2O
  • silicates such as magnesium silicates, aluminum silicate, sodium silicate, potassium silicate and the like
  • mica calcium carbonate (CaCO 3 ) and silica.
  • CaCO 3 calcium carbonate
  • Other commonly employed fillers may also be used as long as they do not materially alter the function of the remaining ingredients in the formulation.
  • Optional conditioning additives may be incorporated into the adhesive composition in order to modify particular physical properties.
  • These additives may include colorants, such as titanium dioxide, defoamers, sequestrants, deionized water, preservatives, biocides, antiblocking agents, anticling agents, pH adjusters, surfactants, thickeners and other commonly known and used additives. As noted above, such additives can be present in amounts ranging from 0% to about 38% by weight.
  • pH adjusters of from 0% to 5%, preferably 0.1% to 1.5%, by weight, may be added to the adhesive composition.
  • Typical pH adjusters include ammonia, alkanol amines, primary amines, secondary amines, tertiary amines, sodium hydroxide, potassium hydroxide, 2-amino- l-propanol, 3-amino-l-propanol, various salts such as, carbonates, phosphates, citrates, acetates, along with their corresponding acids, and other common chemicals used for adjusting pH.
  • a biocide which functions to prevent degradation of the adhesive by microorganisms such as yeast, fungi, bacteria, molds and mildew, as packaged for shelf life preservation
  • Typical biocides are benzoates, phenols, aldehydes, halogen containing compounds, nitrogen compounds, and metal containing compounds, such as, mercurials, zinc compounds and tin compounds with the preferred biocide being Proxel GXL, a l,2-benzisothiazolin-3-one available from Zeneca, Inc.
  • Defoamers in the amount of 0% to 5%, preferably 0.05% to 1.5% may also be added to the adhesive composition.
  • Typical defoamers include silicone-based, mineral oil-based, surfactant-based, and kerosene-based compounds with the preferred defoamer being DEEFO-97-2, a mineral oil- based defoamer available from Ultra Additives, Inc.
  • Opacifers in amounts ranging from 0% to 5%, preferably 0% to 2.5% may also be added to the adhesive composition. Opacifers are added to the adhesive composition to insure that one substrate cannot be seen through or bleed through to the other substrate, particularly when one substrate is a paper.
  • Typical opacifers include titanium dioxide, calcium carbonate, barium sulfate, and other light reflecting powdered minerals or metallic oxides with the preferred opacifer being Contax AQ White, a titanium dioxide dispersion, available from Sun Chemical.
  • a thickener may also be added to the adhesive composition.
  • Thickeners are used to increase the viscosity of the resultant adhesive without substantially affecting its adhesive characteristics.
  • Typical thickeners include polyacrylic acid, polyvinyl alcohol, cellulosic thickeners, acrylic emulsion copolymers, polyacrylic salts, alginates, xanthan gumas, guar, starch bentonites, attapulgates, and other thickening or gelling agents.
  • the preferred thickener is Alcogum L-15, an acrylic emulsion copolymer, available from ALCO Chemical Corp.
  • melt flow modifiers in amounts ranging from 0% to 25% preferably 0% to 20%, may be added to the adhesive composition. Melt flow modifiers are added to the composition to improve the flow of the dried adhesive film under heat and pressure.
  • Typical melt flow modifiers include: phosphate esters, benzoate esters, phthalate esters, wood rosin esters, gum rosin esters, tall oil rosin esters, aromatic hydrocarbon resins, aliphatic hydrocarbon resins, cycloaliphatic resins, all their hydrogenated counterparts, and any combinations of the aforementioned.
  • the preferred melt flow modifiers are phosphate esters, tall oil rosin ester, and solid benzoate esters, with the most preferred being Santicizer 141, a phosphate ester plasticizer available from Monsanto.
  • the adhesive composition useful in the method of the present invention may be formulated using any of the techniques known in the art.
  • a representative example of the procedure involves placing all the components in a mixing kettle equipped with a rotor. They are then mixed under agitation and the mixing is allowed to continue until a smooth and uniform mixture is formed.
  • the adhesive composition of the present invention may be used in a variety of applications.
  • the resulting pressure sensitive adhesives may be coated on paper and plastic film substrates to form food packages, peelable tape and label stocks.
  • the nonpressure sensitive adhesives may be utilized in manufacturing corrugated boxes, in carbon sealing and bookbinding applications.
  • They may also be used in manufacturing of toilet tissues, paper towels, wipes and other consumer products as the laminating adhesive to bind a plurality of substrate layers.
  • the adhesives of the present invention are especially useful in assembly or constructions of food packaging to bind a substrate composed of plastic film, paper, metal foil or the like to another substrate.
  • This second substrate may be another plastic film, paper, or metal foil.
  • the plastic material may be, for example, polyethylene or polypropylene film.
  • the adhesives of the present invention can be coated or applied with a variety of application techniques known in the art, which include, for example, slot die, spray, gravure, extrusion, application wheel, or other known application apparatus.
  • application techniques known in the art, which include, for example, slot die, spray, gravure, extrusion, application wheel, or other known application apparatus.
  • the invention is further illustrated by way of the example which are set forth below:
  • EXAMPLE 1 An adhesive was prepared by charging into a mixing vessel equipped with an agitator, and then stirring at room temperature until a smooth and uniform mixture was formed, the following ingredients:
  • Test # 1 was devised to evaluate the effect of odors on the taste of foods.
  • the food chosen was milk chocolate.
  • the procedure used was as follows:
  • the samples were then taken out of the jars and evaluated one at a time using a testing scale of 0 to 4 with 4 being the most different tasting from the control and 0 being indistinguishable from the control.
  • the substrate used in these 2 tables was a laminated structure using printed polypropylene film, MF10, to polypropylene film, RLS.
  • Control 3 2 1 0 0 0.7 0.8
  • Table 1 shows how by adding different odorants, the taste of food (milk chocolate) can be affected.
  • Table 2 shows how one odorant, vanillan, can have the opposite effect on two similar formulations.
  • EXAMPLE 7 Test #2 was devised to evaluate the effect of odors on the taste of foods.
  • the food chosen was milk chocolate.
  • the procedure used was as follows: 1. All adhesive samples were applied to the particular substrate used in the application, using a #7 wire wound rod and dried for 30 seconds at 180°F in a forced air oven.
  • the substrate used in these tables was a polypropylene film, RLS without printing.
  • Example 1 The following peel testing was performed to determine whether the incorporation of a zeolite into the adhesive composition of Example 1 affects peel strength of the adhesive.
  • Example 1 445 336 390 Adhesive - sample 1 side to side
  • Example 1 463 308 386 Adhesive - sample 2 side to side
  • Example 1 436 290 363 Adhesive - sample 3 side to side
  • Example 1 409 254 331 Adhesive - sample 4 side to side
  • Example 1 The following block testing was performed to determine whether the incorporation of a zeolite into the adhesive composition of Example 1 affects blocking of the adhesive.
  • Example 8 The identical peel testing according to Example 8 and block testing according to Example 9 was performed on the adhesive formulation 1286- 192E of Example 4 with 20 ppm vanillin added as an odor masking agent, rather than a zeolite adsorption agent.

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

L'invention concerne un adhésif à base d'eau comprenant un agent d'adsorption ou d'épuration destiné à éliminer les odeurs et les exhalaisons indésirables de l'adhésif. L'agent d'adsorption est un tamis moléculaire siliceux cristallin caractérisé par un diamètre des pores supérieur à 4 angströms et une capacité d'adsorption de l'eau inférieure ou égale à 10 %. Le tamis moléculaire préféré est une zéolite hydrophobe.
PCT/US2000/020949 1999-08-09 2000-08-01 Adhesif desodorisant Ceased WO2001010966A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU65076/00A AU6507600A (en) 1999-08-09 2000-08-01 Deodorizing adhesive

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US37042599A 1999-08-09 1999-08-09
US09/370,425 1999-08-09

Publications (1)

Publication Number Publication Date
WO2001010966A1 true WO2001010966A1 (fr) 2001-02-15

Family

ID=23459608

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/020949 Ceased WO2001010966A1 (fr) 1999-08-09 2000-08-01 Adhesif desodorisant

Country Status (2)

Country Link
AU (1) AU6507600A (fr)
WO (1) WO2001010966A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110178223A1 (en) * 2009-12-19 2011-07-21 Rolefs Mike Method of making an elastic film, in particular for a hygienci article
FR2993897A1 (fr) * 2012-07-30 2014-01-31 Bostik Sa Auto-adhesif thermofusible pour emballage refermable a proprietes organoleptiques ameliorees
CN108441149A (zh) * 2018-04-17 2018-08-24 李阳 一种多孔透气涂层热封胶及其制备方法与涂布工艺
CN109161034A (zh) * 2018-08-20 2019-01-08 辽阳辽化奇达化工有限责任公司 一种非晶态α-烯烃共聚物的乳化方法
CN110003800A (zh) * 2019-04-10 2019-07-12 广东绿洲化工有限公司 一种改性丁苯胶乳环保喷胶及其制备方法
WO2022047036A1 (fr) * 2020-08-27 2022-03-03 Crescent City Seafood Inc. Processus et système pour fumer des fruits de mer et de la viande avec réduction des odeurs de gaz et amélioration du goût
IT202300002070A1 (it) * 2023-02-07 2024-08-07 Alfashield S R L Supporto cartaceo di tipo migliorato

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JPS55160035A (en) * 1979-05-30 1980-12-12 Japan Vilene Co Ltd Production of adsorptive sheet
US4293458A (en) * 1979-01-22 1981-10-06 Henkel Kommanditgesellschaft Auf Aktien Thermoplastic polymer composition materials for pretreating paper
JPS62209179A (ja) * 1986-03-11 1987-09-14 Toraya Uule Kk 消臭接着剤
US4963431A (en) * 1988-06-17 1990-10-16 Aquarium Pharmaceuticals, Inc. Zeolite-impregnated pads
US5306487A (en) * 1990-02-12 1994-04-26 Nancy Karapasha High capacity odor controlling compositions
US5436282A (en) * 1991-01-22 1995-07-25 Neste Oy Eliminating odor/taste-producing substances in plastic materials with zeolites
EP0664317A1 (fr) * 1994-01-19 1995-07-26 Du Pont De Nemours International S.A. Résines thermoplastiques désodorées

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US4293458A (en) * 1979-01-22 1981-10-06 Henkel Kommanditgesellschaft Auf Aktien Thermoplastic polymer composition materials for pretreating paper
JPS55160035A (en) * 1979-05-30 1980-12-12 Japan Vilene Co Ltd Production of adsorptive sheet
JPS62209179A (ja) * 1986-03-11 1987-09-14 Toraya Uule Kk 消臭接着剤
US4963431A (en) * 1988-06-17 1990-10-16 Aquarium Pharmaceuticals, Inc. Zeolite-impregnated pads
US5306487A (en) * 1990-02-12 1994-04-26 Nancy Karapasha High capacity odor controlling compositions
US5436282A (en) * 1991-01-22 1995-07-25 Neste Oy Eliminating odor/taste-producing substances in plastic materials with zeolites
EP0664317A1 (fr) * 1994-01-19 1995-07-26 Du Pont De Nemours International S.A. Résines thermoplastiques désodorées

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DATABASE CHEMABS [online] CHEMICAL ABSTRACTS SERVICE, COLUMBUS, OHIO, US; JAPAN VILENE CO., LTD., JAPAN: "Adsorbent sheets", XP002152428, retrieved from STN Database accession no. 94:157998 *
DATABASE CHEMABS [online] CHEMICAL ABSTRACTS SERVICE, COLUMBUS, OHIO, US; TANAKA, MAMORU: "Adhesives with deodorants", XP002152427, retrieved from STN Database accession no. 108:76686 *

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110178223A1 (en) * 2009-12-19 2011-07-21 Rolefs Mike Method of making an elastic film, in particular for a hygienci article
US8648139B2 (en) * 2009-12-19 2014-02-11 Mondi Gronau Gmbh Method of making an elastic film, in particular for a hygienic article
FR2993897A1 (fr) * 2012-07-30 2014-01-31 Bostik Sa Auto-adhesif thermofusible pour emballage refermable a proprietes organoleptiques ameliorees
WO2014020243A1 (fr) * 2012-07-30 2014-02-06 Bostik S.A. Auto-adhesif thermofusible pour emballage refermable a proprietes organoleptiques ameliorees
JP2015529715A (ja) * 2012-07-30 2015-10-08 ボスティク エス．アー． 感覚刺激性が改良された再密封性包装材料用ホットメルト感圧接着剤
US20150299535A1 (en) * 2012-07-30 2015-10-22 Bostik Sa Hot-melt pressure-sensitive adhesive for a reclosable packaging having improved organoleptic properties
AU2013298436B2 (en) * 2012-07-30 2016-11-03 Bostik S.A. Hot-melt pressure-sensitive adhesive for a reclosable packaging having improved organoleptic properties
CN108441149A (zh) * 2018-04-17 2018-08-24 李阳 一种多孔透气涂层热封胶及其制备方法与涂布工艺
CN109161034A (zh) * 2018-08-20 2019-01-08 辽阳辽化奇达化工有限责任公司 一种非晶态α-烯烃共聚物的乳化方法
CN110003800A (zh) * 2019-04-10 2019-07-12 广东绿洲化工有限公司 一种改性丁苯胶乳环保喷胶及其制备方法
WO2022047036A1 (fr) * 2020-08-27 2022-03-03 Crescent City Seafood Inc. Processus et système pour fumer des fruits de mer et de la viande avec réduction des odeurs de gaz et amélioration du goût
IT202300002070A1 (it) * 2023-02-07 2024-08-07 Alfashield S R L Supporto cartaceo di tipo migliorato

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