EP0147759A2 - Geruchsinhibitoren enthaltendes Latex - Google Patents

Geruchsinhibitoren enthaltendes Latex Download PDF

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Publication number
EP0147759A2
EP0147759A2 EP84115554A EP84115554A EP0147759A2 EP 0147759 A2 EP0147759 A2 EP 0147759A2 EP 84115554 A EP84115554 A EP 84115554A EP 84115554 A EP84115554 A EP 84115554A EP 0147759 A2 EP0147759 A2 EP 0147759A2
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EP
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Prior art keywords
latex
weight parts
methyl
bis
mixtures
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EP84115554A
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English (en)
French (fr)
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EP0147759B2 (de
EP0147759B1 (de
EP0147759A3 (en
Inventor
Pravinchandra Kantilal Shah
George John Antlfinger
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Goodrich Corp
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BF Goodrich Corp
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Priority to AT84115554T priority Critical patent/ATE65557T1/de
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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D04H1/64—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D04H1/587—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives characterised by the bonding agents used

Definitions

  • a nonwoven fabric is a textile structure consisting of a mat of fibers held together with a bonding material.
  • the fibers can be partially oriented or they can be completely randomly distributed.
  • Latex is often used as the binder for the fibers in nonwoven fabrics.
  • Nonwoven fabrics are popular owing to the simplicity and economy of their production since the traditional weaving operations are not used; hence, less equipment, less space, and fewer personnel are required. Nonwoven fabrics can also be produced from what would normally be considered as waste fibers, and useful characteristics are obtained which may not be provided by woven or knitted fabrics.
  • Enormous quantity of fibers are consumed annually in applications of nonwoven fabrics such as clothing, interliners, filters, automotive door panels, heat and electrical insulation, packaging, sanitary napkins, fillers for quilted structures, wiping cloths, towels, masks, wall coverings, shoe uppers and liners, curtains and draperies, tea bags, simulated leather, gaskets, luggage, ribbons, and diapers.
  • nonwoven fabrics such as clothing, interliners, filters, automotive door panels, heat and electrical insulation, packaging, sanitary napkins, fillers for quilted structures, wiping cloths, towels, masks, wall coverings, shoe uppers and liners, curtains and draperies, tea bags, simulated leather, gaskets, luggage, ribbons, and diapers.
  • nonwoven fabrics are used in surgical drapes, surgical caps and gowns, as wraps for surgical instruments and the like.
  • the surgical use requires that the fabric used be sterilized.
  • latex-impregnated fabric used for drapes, gowns and caps such items are wrapped and sealed in polyolefin bags and then are sterilized with gamma ray radiation.
  • the bags are opened and the doctors and nurses put on the caps and gowns and use the drapes to cover the patient during surgery.
  • the bags are opened, they often emit odors.
  • surgical instruments after being washed, surgical instruments are stacked in a tray and then wrapped in the latex-impregnated nonwoven fabric and sterilized in steam. After steam sterilization, the wrapped instrument trays are removed from the sterilization unit. When the door to the sterilization unit is opened to remove the wrapped instrument tray, an odor is emitted from the fabric that can be quite potent.
  • antioxidants have been added to unsaturated latexes to prevent degradation of the unsaturated polymer backbone in the presence of air, ozone, heat, and light.
  • unsaturated latexes include polybutadiene, poly(butadiene-styrene), poly(butadiene-acrylonitrile), polyisoprene, and polychloroprene.
  • Saturated latexes are prepared by homopolymerizing esters of acrylic or methacrylic acids or copolymerizing esters of acrylic or methacrylic acids with other vinyl monomers such as acrylonitrile, styrene, vinyl chloride, and vinyl acetate.
  • the saturated latexes do not need protection of antioxidants and whenever antioxidants were added to saturated latexes, they were added for colloidal stabilization, which is unrelated to the antioxidant function.
  • Hydrophilic acrylic latexes based on poly(ethyl acrylate) have been available in the past for bonding nonwoven fibers.
  • Such latexes were prepared by polymerizing in excess of 90 weight parts ethyl acrylate; less than 5 parts of each N-methylol acrylamide, acrylamide, or acrylonitrile; a low level of an emulsifier; and less than 1 weight part of an antioxidant selected from hindered and partially hindered phenols, such as a mixture of 2,2'-di-t-butyl Bisphenol A, 2-t-butyl-2'-a-methylbenzyl Bisphenol A, 2,6-di-t-butylphenol, 2-t-butyl-isopropylphenol, etc.
  • the antioxidant was added as an emulsion to provide additional colloidal stability.
  • This invention relates to nonwoven fabrics bonded with latexes comprising 65 to 85 weight parts of a soft hydrophobic monomer, 10 to 30 weight parts of a hard hydrophobic monomer, 0.1 to 5 weight parts of an unsaturated carboxylic acid, and 0.1 to 5 parts of an N -alkylol acrylamide or methacrylamide, said latex having admixed thereto 0.01 to 5 weight parts of an odor inhibition agent selected from amine-type antioxidants, and hindered or partially hindered phenols.
  • This invention is based on a latex that is used as a binder in making nonwoven fabrics that are used in medical/surgical applications.
  • This latex when used as a binder for making nonwoven fabrics, provides a balance of softness, physical strength, hydrophobicity, adhesion, low skin toxicity, and minimal odor after sterilization. All of these properties are requisites for a fabric that is used in medical/surgical applications.
  • the acrylic latex of this invention is prepared by free radical polymerization of 65 to 85 weight parts soft hydrophobic monomer, 10 to 30 weight parts of hard hydrophobic monomer, 0.1 to 5 weight parts of an unsaturated carboxylic acid, and 0.1 to 5 weight parts of an N-alkylol acrylamide or methacrylamide. Polymerization is carried out in the presence of 0.1 to 2 weight parts of a suitable free radical initiator and usually with less than one weight part of an emulsifier. To this latex is admixed about 0.01 to 5 weight parts of an odor inhibition agent selected from hindered or partially hindered phenols and amine-type antioxidants.
  • the odor inhibition agents as defined herein, also include free radical terminators or shortstops.
  • free radical polymerization is carried out in the presence of 0.3 to 1 part of a free radical initiator and 0.1 to 0.5 part of an emulsifier with the monomers to be polymerized including 70 to 80 parts of a soft hydrophobic monomer, 15 to 25 parts of a hard hydrophobic monomer, 0.5 to 4 parts of unsaturated carboxylic acid, and 0.5 to 4 parts of N-alkylol acrylamide or methacrylamide.
  • Amount of the odor inhibition agent in the preferred embodiment is in the range of 0.1 to 1 part, based on the weight of latex solids.
  • Typical polymerizations for the preparation of the latexes described herein are conducted by charging the reactor with appropriate amount of water, emulsifier and a portion of the initiator sufficient to initiate polymerization.
  • the reactor is then evacuated, heated to the initiation temperature of about 80°C and charged with a portion of the monomer premix which has been previously prepared by mixing water, emulsifier, the monomers, and polymerization modifiers, if any are employed.
  • the proportioning of the remaining monomer premix is begun, the rate of proportioning being varied depending on the polymerization temperature, the particular initiator employed, and the amount of the monomer(s) being polymerized.
  • the final addition of initiator is made and the reactor and the latex heated with agitation for a length of time necessary to achieve the desired conversion.
  • the pH of the latex is generally in the range of about 2 to 7.
  • the particle size may be in the range of about 3000 angstroms.
  • a generally satisfactory particle size may be, however, from about 500 to about 5000 angstroms.
  • the total solids of the latexes may be varied up to about 70% and may relate to the fluidity wanted in the composition. Generally, it is desired to use a latex containing 45 to 55% solids.
  • Suitable soft hydrophobic monomers that can be used to prepare the latex of this invention include those monomers homopolymers of which have Tg falling within the range of about -80°C to -20°C, preferably -60 to -30°C. Specific examples of such monomers include n-butyl acrylate, 2-ethylhexyl acrylate, and isobutyl acrylate.
  • Preferred soft hydrophobic monomers are acrylic monomers that include n-butyl acrylate and isobutyl acrylate. Since ethyl acrylate forms a hydrophilic polymer, it is excluded from the class of monomers defined herein.
  • suitable hard hydrophobic monomers are those that form homopolymers having Tg in the range of about +40°C to +120°C, preferably +80 to +110°C.
  • specific examples of such hard hydrophobic monomers include styrene, a-methyl styrene, methyl methacrylate, butyl methacrylate, and 2-ethylhexyl methacrylate.
  • Preferred-monomers in this class include styrene and methyl methacrylate.
  • a small amount of an acid is used in conjunction with N-alkylol acrylamide to facilitate curing at a lower temperature.
  • Suitable acids for this purpose include monounsaturated, diunsaturated, monocarboxylic and dicarboxylic acids generally containing at least 3 carbon atoms and up to about 12 carbon atoms, preferably 3 to 6 carbon atoms.
  • Such acids include acrylic, methacrylic, itaconic, fumaric, and maleic.
  • Preferred acids are acrylic, methacrylic, and itaconic.
  • N-alkylol acrylamide is also included in the polymerization formulation as a cross-linking agent.
  • Such amides are derivatives of acrylic and methacrylic acids that contain 1 to 10, preferably 1 to 4 carbon atoms in the alkyl group.
  • This class of amides includes N-methylol acrylamide, N-methylol methacrylamide, n and iso-butoxy methyl acrylamide.
  • Preferred example of such amides is N-methylol acrylamide.
  • anionic and nonionic emulsifiers include alkali metal or ammonium salts of the sulfates of alcohols containing 8 to 18 carbon atoms such as sodium lauryl sulfate, alkali metal and ammonium salts of sulfonated petroleum and paraffin oils, sodium salts of sulfonic acids, alkylaryl sulfonates, alkali metal and ammonium salts of sulfonated dicarboxylic acid esters, and the like.
  • Nonionic emulsifiers such as octyl or nonylphenyl polyethyoxyethanol, can also be used.
  • Latices of excellent stabilty can be prepared with emulsifiers selected from alkali metal and ammonium salts of aromatic sulfonic acids, alkylaryl sulfonates, long chain alkyl sulfonates, and poly(oxyalkylene) sulfonates.
  • emulsifiers selected from alkali metal and ammonium salts of aromatic sulfonic acids, alkylaryl sulfonates, long chain alkyl sulfonates, and poly(oxyalkylene) sulfonates.
  • Commonly used free radical initiators include the various peroxygen compounds such as persulfates, benzoyl peroxide, t-butyl hydroperoxide,and cumene hydroperoxide; and azo compounds such as azodiisobutyronitrile and dimethylazodiisobutyrate.
  • Particularly useful initiators are the water-soluble peroxygen compounds such as hydrogen peroxide and the sodium, potassium and ammonium persulfates used by themselves or in an activated redox system.
  • Typical redox systems include alkali metal persulfates in combination with a reducing substance such as polyhydroxyphenols and oxidizable sulfur compounds, a reducing sugar, dimethylaminopropionitrile, a diazomercaptan compound, and a water-soluble ferrous sulfate compound.
  • a reducing substance such as polyhydroxyphenols and oxidizable sulfur compounds
  • a reducing sugar such as polyhydroxyphenols and oxidizable sulfur compounds
  • a reducing sugar such as polyhydroxyphenols and oxidizable sulfur compounds
  • a reducing sugar such as polyhydroxyphenols and oxidizable sulfur compounds
  • a reducing sugar such as polyhydroxyphenols and oxidizable sulfur compounds
  • dimethylaminopropionitrile such as polyhydroxyphenols and oxidizable sulfur compounds
  • diazomercaptan compound a diazomercaptan compound
  • a water-soluble ferrous sulfate compound such as polyhydroxyphenols and oxidiz
  • the latexes described herein can be compounded with, or have mixed herein, other known ingredients before impregnation and before curing.
  • ingredients include curing agents, fillers, water repellent materials, plasticizers, antioxidants or stabilizers, antifoaming agents, dying adjuvants, pigments, and other compounding aids.
  • thickeners or bodying agents may be added to the polymer latices so as to control the viscosity of the latexes and thereby achieve the proper flow properties for the particular application desired.
  • the odor inhibition agent can be added during polymerization of the latex or to the latex any time before the latex is used to form a nonwoven fabric or it can be added with other compounding ingredients either by itself or together with the compounding ingredients. Following addition of the odor inhibition agent, the latex is cured on the nonwoven fabric.
  • the odor inhibition agent is selected from fully hindered and partially hindered phenols and amine-type antioxidants.
  • the phenols can be partially or fully hindered, meaning that one or both of the ortho positions to the hydroxyl group on the benzene ring are substituted, preferably with tertiary alkyl groups of 4 to 6 carbon atoms each.
  • the hindered phenolic antioxidants also include free radical terminators or shortstops, especially the oil-soluble shortstops, such as di-t-amyl hydroquinone.
  • shortstops are not considered to be hindered phenols or antioxidants in the conventional chemical parlance.
  • the amine-type of antioxidants include ketone-amine condensation products, diaryldiamines, diarylamines, and ketone-diarylamine condensation products.
  • hindered phenolic antioxidants that can function as odor inhibition agents in the manner described herein.
  • suitable hindered phenolic antioxidants that can be admixed with an acrylic latex in order to reduce odor upon sterilization with irradiation or steam, include the following:
  • Preferred hindered phenolic antioxidants include trifunctional hindered phenols based alkylated benzenes, isocyanuric acid, and on hydrocinnamic acid.
  • Preferred hindered phenolic antioxidants also include the alkylated hydroquinones and phenols having the following general structures A, B, C and D: where R groups are individually selected from hydrogen and alkyl groups of 1 to 12 carbon atoms with at least one R group being selected from the alkyl groups; R groups are individually selected from lower alkyl groups and hydroxyl groups; X is selected from lower alkylene groups and sulfur; and Y is selected from lower alkylene groups and sulfur.
  • the R groups are individually selected from hydrogen and alkyl groups of 3 to 12 carbon atoms, especially tertiary alkyl groups of 4 to 8 carbon atoms such as t-amyl and t-butyl, with at least one of the R groups being selected from the alkyl groups; the R 1 groups are selected from hydroxyl and alkyl groups of 1 to 3 carbon atoms; X is either methylene or sulfur; and Y is either methylene or sulfur.
  • hindered phenolic antioxidants include 2,2'-methylene- bis(4-ethyl-6-t-butylphenol) sold as A0425, 2,2'-methylene-bis(4-methyl-6-nonylphenol) sold as Naugawhite, 2,2'-methylene-bis(4-t-butyl-6-t-butylphenol) sold as Isonox 128, 2,2-methylene-bis(4-methyl-6-t-butylphenol) sold as AO 2246, 2,2'-thio-bis(4-methyl-6-t-butylphenol) sold as CAO-6, 4,4'-thio-bis(3-methyl-6-t-butylphenol) sold as Santowhite Crystals, butylated reaction product of p-cresol and dicyclopentadiene that is sold under the trade name of Wingstay L®, l,3,5-trimethyl-2,4,6-tris (3,S-t-butyl-4-hydroxybenzyl) benzene sold as
  • reaction product of 4,4-isopropylidene-di-phenol, isobutylene, and styrene which includes 2,2'-di-t-butyl bisphenol A, 2-t-butyl-2'-a-methylbenzyl bisphenol A, 2,6-di-t-butylphenol, and 2-t-butyl-4-isopropylphenol.
  • This type of antioxidant is available under the trade name Superlite antioxidant.
  • Suitable amine-type antioxidants include ketone-amine condensation products such as the polymeric dihydrotrimethylquinoline and 6-ethoxy-1,2-dihydro-2,2,4-tri-methylquinoline; diaryldiamines such as N,N'-diphenyl-p-phenylenediamine and N,N'-di-B-naphthyl-p-phenylenediamine; diarylamines include alkylated diphenylamines such as monooctyl diphenylamine and dioctyl diphenylamine; and ketone-diarylamine condensation products that include complex mixtures obtained by the reaction of diphenylamine and acetone.
  • the preferred amine-type of antioxidants suitable for purposes herein are the diaryldiamines, especially N,N'-di-B-naphthyl-p-phenylenediamine.
  • the latex After admixing the odor inhibiting agent to the acrylic latex, the latex is compounded with fluorocarbons, cationic additives, and other additives to prevent static build-up and achieve other results.
  • the finished latex is then applied to the web or mat of fibers in any suitable fashion such as by spraying, dipping, roll-transfer, or the like.
  • Application of the latex to the fibers is preferably made at room temperature to facilitate cleaning of the associated apparatus.
  • the solids concentration of the latex can be in the range of 5% to 60% by weight, and preferably from 5% to 35% when applied by dipping. When applied by roll-transfer, solids concentration of the latex is generally about 50% whereas with the spraying technique, it an range widely.
  • the proportion of the latex polymer that is applied to the web or mat is such as to provide 10 to 100%, preferably 25% to 40% by weight of the polymer, based on the total weight of the polymer and fibers.
  • the impregnated or saturated web is dried either at room temperature or at elevated temperature.
  • the web is subjected, either after completion of the drying or as the final step of the drying stage itself, to a baking or curing operation which may be effected at a temperature of about 210° to about 500°F for a period which may range from about one-half hour at the lower temperatures to as low as five seconds at the upper temperatures.
  • the conditions of drying and curing are controlled so that no appreciable deterioration or degradation of the fibers or polymer occurs.
  • the curing is effected at a temperature of 240° to 350°F for a period under 3 minutes.
  • the fibers that are bonded with the latices described herein are formed into nonwoven mats or webs in which they are ordered or are randomly distributed.
  • the fibers may comprise natural textile fibers such as jute, sisal, ramie, hemp and cotton, as well as many of the artificial organic textile fibers including rayon, those of cellulose esters such as cellulose acetate, vinyl resin fibers such as those of polyvinyl chloride and copolymers thereof, polyacrylonitrile and copolymers thereof, polymers and copolymers of olefins such as ethylene and propylene, condensation polymers such as polyimides or nylon types, polyesters, and the like.
  • the fibers used can be those of a single composition or mixtures of fibers in a given web.
  • the preferred fibers for purposes herein are hydrophilic, especially cellulosic fibers, and blends of hydrophobic and hydrophilic fibers.
  • hydrophobic fibers include polyester, polypropylene, and nylon fibers.
  • the acrylic latexes described herein, together with an odor inhibition agent admixed therein, can be further compounded with fluorocarbons, cationic additives, and other additives, in order to reduce static build-up, to obtain repellency, and achieve other results.
  • the finished latex is then used to bond fibers which are subsequently formed into a nonwoven fabric, which, in turn, is used to make products that are used in the medical/surgical applications. Examples of such products, as already disclosed, include surgical caps, gowns, drapes, and wraps for surgical instruments. Since surgical uses require sterilized fabric, such products are wrapped in a plastic bag and sterilized, as by gamma ray irradiation.
  • the plastic bag can be any suitable plastic including polyolefins, polyesters, polyvinyl chloride, and the like.
  • the instrument wrap is used to wrap surgical instruments and then is sterilized, as with steam.
  • Sterilization by irradiation is generally accomplished using cobalt 60 at about 2.5 mega rads. Sterilization with steam is accomplished by the following schedule:
  • nonwoven fabrics bonded with acrylic latexes and subjected to sterilization conditions noted above produced foul odors that have been described as acidic and irritating to eyes and nose.
  • This acrylic latex was prepared by polymerizing certain monomers in the presence of about 0.5 weight part sodium persulfate initiator and about 0.5 weight part of sodium lauryl sulfate emulsifier.
  • the latex was prepared by polymerizing the following monomers, in the indicated amounts, at about 80°C:
  • the polymerization procedure utilized consisted of the initial preparation in a premix pot of a premix of the monomers, some water and some emulsifier. Remainder of water and emulsifier were added to a reactor which was then heated to the polymerization temperature of about 80°C. While heating to the polymerization temperature, a portion of the initiator was added to the reactor. After reaching the desired temperature, the premix was added at a controlled rate. Once all of the premix was added to the reactor, remainder of the initiator was also added to the reactor and the reaction was maintained for about two hours under constant agitation. When the desired conversion of 99%+ was reached, the latex was cooled and stripped. The resulting latex had 47.5% solids.
  • the odor rating was obtained by opening a pack of nonwoven fabric that was sterilized with gamma radiation.
  • the pack was opened in a closed room measuring about 10' by 10'.
  • Each pack contained 20 square yards of a nonwoven fabric, all of which was spread out in the room.
  • a panel of 10 persons entered the room and rated the odor intensity on a scale of 1 to 5, defined as follows:
  • A0330 is l,3,5-trimethyl-2,4,6-tris (3,5-t-butyl-4-hydroxybenzyl) benzene
  • DTAHQ is di-t-amyl hydroquinone
  • both Agerite SKT and Goodrite 3125 are 3,5-di-t-butyl-4-hydroxyhydrocinnamic acid triester with 1,3,5-tris (2-hydroxyethyl)-s-triazine-2,4,6-(lH,3H,5H)trione.
  • the latexes described herein are adapted for use as binders for fibers which are made into nonwoven fabrics. These fabrics have applications in the medical/surgical field which require repellancy to body fluids such as blood, urine, and perspiration.
  • the repellency is measured in terms of repellency to alcohol and saline solution. Due to the particular applications wherein the nonwoven fabric comes in contact with human body, the latexes of this invention require properties such as softness, physical strength, hydrophobicity, low skin toxicity, adhesion during forming of the nonwoven fabric, and of course, minimal odor after sterilization.
  • hydrophobic latex that will have the repellency property
  • hydrophobicity of the latex can be enhanced by compounding the latex with materials such as fluorocarbons.
  • An anionic emulsifier level of 3 phr, per 100 parts of dry latex, is normally considered high whereas less than 1.0 phr is normally considered to be low.
  • a high content of anionic emulsifier in a latex recipe will not result in a repellent latex, however, the desired repellency may result if the latex is compounded with materials such as fluorocarbons.
  • a higher level of nonionic emulsifier of up to about 5 phr can be used, relative to anionic emulsifier, to maintain repellency.
  • the use of an unsaturated acid in conjunction with a N-alkylol acrylamide allows the curing to proceed more efficiently and at a lower temperature.
  • an acid-containing latex made on a commercial scale had to contain in excess of 1.0 phr emulsifier to remain stable and whenever amount of emulsifer was less than 1.0 phr, the resulting latex was unstable, meaning that it contained floc, i.e., agglomerated particles.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Polymerisation Methods In General (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
EP84115554A 1983-12-27 1984-12-15 Geruchsinhibitoren enthaltendes Latex Expired - Lifetime EP0147759B2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84115554T ATE65557T1 (de) 1983-12-27 1984-12-15 Geruchsinhibitoren enthaltendes latex.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US56568983A 1983-12-27 1983-12-27
US565689 1983-12-27

Publications (4)

Publication Number Publication Date
EP0147759A2 true EP0147759A2 (de) 1985-07-10
EP0147759A3 EP0147759A3 (en) 1988-07-27
EP0147759B1 EP0147759B1 (de) 1991-07-24
EP0147759B2 EP0147759B2 (de) 1999-05-06

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EP84115554A Expired - Lifetime EP0147759B2 (de) 1983-12-27 1984-12-15 Geruchsinhibitoren enthaltendes Latex

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EP (1) EP0147759B2 (de)
JP (1) JPS60155778A (de)
AT (1) ATE65557T1 (de)
CA (1) CA1264390A (de)
DE (1) DE3484848D1 (de)
MX (1) MX167885B (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0261378A3 (en) * 1986-09-26 1989-07-12 National Starch And Chemical Corporation Heat resistant binders
EP0264869A3 (en) * 1986-10-20 1990-02-14 The B.F. Goodrich Company Nonwoven fabric with an acrylate interpolymer binder and a process of making the nonwoven fabric
WO1992008835A1 (en) * 1990-11-14 1992-05-29 Vinamul Limited Improvements in or relating to non-woven fibrous materials
EP0709507A1 (de) * 1994-12-07 1996-05-01 Vinamul Ltd. Entkeimer in einem Polymer und dessen Anwendung in Vliesstoffen
US6063498A (en) * 1997-12-08 2000-05-16 Basf Aktiengesellschaft Sterile nonwovens bonded using polyurethane dispersions
US8217102B2 (en) 2009-12-30 2012-07-10 Rohm And Haas Company Low odor styrenic polymer dispersions
US12115290B2 (en) 2017-10-11 2024-10-15 Microban Products Company Odor control composition and carpet having a durable odor control property

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3318722A (en) * 1963-08-06 1967-05-09 Burlington Industries Inc Process for deodorizing resin-containing textiles by treatment with ammonia and steam
US3539434A (en) * 1967-12-27 1970-11-10 Goodrich Co B F Nonwoven compositions having improved aging properties
US4107120A (en) * 1976-06-17 1978-08-15 Rohm And Haas Company Heteropolymer acrylic latices and textiles treated therewith
DE3202093A1 (de) * 1982-01-23 1983-08-04 Röhm GmbH, 6100 Darmstadt Acrylkunststoffdispersion

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0261378A3 (en) * 1986-09-26 1989-07-12 National Starch And Chemical Corporation Heat resistant binders
EP0264869A3 (en) * 1986-10-20 1990-02-14 The B.F. Goodrich Company Nonwoven fabric with an acrylate interpolymer binder and a process of making the nonwoven fabric
WO1992008835A1 (en) * 1990-11-14 1992-05-29 Vinamul Limited Improvements in or relating to non-woven fibrous materials
EP0709507A1 (de) * 1994-12-07 1996-05-01 Vinamul Ltd. Entkeimer in einem Polymer und dessen Anwendung in Vliesstoffen
US6063498A (en) * 1997-12-08 2000-05-16 Basf Aktiengesellschaft Sterile nonwovens bonded using polyurethane dispersions
US8217102B2 (en) 2009-12-30 2012-07-10 Rohm And Haas Company Low odor styrenic polymer dispersions
US12115290B2 (en) 2017-10-11 2024-10-15 Microban Products Company Odor control composition and carpet having a durable odor control property

Also Published As

Publication number Publication date
MX167885B (es) 1993-04-20
EP0147759B2 (de) 1999-05-06
ATE65557T1 (de) 1991-08-15
EP0147759B1 (de) 1991-07-24
EP0147759A3 (en) 1988-07-27
JPH0582421B2 (de) 1993-11-18
CA1264390A (en) 1990-01-09
JPS60155778A (ja) 1985-08-15
DE3484848D1 (de) 1991-08-29

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