WO2006067516A2 - Textile possedant une activite biocide - Google Patents

Textile possedant une activite biocide Download PDF

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Publication number
WO2006067516A2
WO2006067516A2 PCT/GB2005/005092 GB2005005092W WO2006067516A2 WO 2006067516 A2 WO2006067516 A2 WO 2006067516A2 GB 2005005092 W GB2005005092 W GB 2005005092W WO 2006067516 A2 WO2006067516 A2 WO 2006067516A2
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Prior art keywords
composition
textile
formula
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PCT/GB2005/005092
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English (en)
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WO2006067516A3 (fr
Inventor
Michael John Stephens
Thomas David Evans
Richard Sciama
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Endurocide Limited
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Priority claimed from GB0428288A external-priority patent/GB0428288D0/en
Priority claimed from GB0500741A external-priority patent/GB0500741D0/en
Application filed by Endurocide Limited filed Critical Endurocide Limited
Publication of WO2006067516A2 publication Critical patent/WO2006067516A2/fr
Publication of WO2006067516A3 publication Critical patent/WO2006067516A3/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
    • A01N25/34—Shaped forms, e.g. sheets, not provided for in any other sub-group of this main group
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
    • D06M15/6436—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain containing amino groups
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/643—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain
    • D06M15/647—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain containing polyether sequences
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M16/00—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic

Definitions

  • the present invention relates to a biocidal textile, a method of preparing a biocidal textile and composition for use in providing a textile with biocidal activity.
  • Biocidal compositions are widely used for sterilising and protecting by applying the composition to an area on an ad hoc basis.
  • Articles which are provided with an inherent biocidal capability are advantageous because they operate on a preventative basis to stop colonisation of areas with undesirable microbes such as bacteria, fungus and the like.
  • Textiles are in general kept clean by repeated washing, but in between washing operations are susceptible to unwanted microbial colonisation.
  • the present invention seeks to provide a textile with an inherent capacity to inhibit the growth and spread of unwanted organisms in order to protect the textile from colonisation.
  • a method of providing a textile with a biocidal property comprising the steps of:
  • the method may further comprise the step of drying the textile to remove excess composition following the impregnation step.
  • the drying step may comprise a heating step.
  • the impregnation step may comprise applying composition to the textile and passing it through a mangle.
  • the mangle may be a pad mangle.
  • the textile may be soaked with composition as part of the impregnation process.
  • the fixing step may comprise a baking step.
  • the fixing step may cross-link the composition to the textile.
  • the properties of durable biocidal activity regardless of repeated laundering are particularly advantageous.
  • the method of the present invention may therefore render the composition resistant to being washed out of the textile.
  • the composition may be non-flammable and/or a non-irritant.
  • a textile formed in accordance with the present invention may be used to make articles such as bed sheets, mattress covers, pillowcases, clothing and domestic furnishings like curtains and tablecloths.
  • the symbols T which are identical or different, represent a phenyl, a C.sub.l to C.sub.6 alkyl radical, or a polyoxyalkylene ether residue of formula: ⁇ R--O-(R'O).sub.n R" or a amino group of formula:
  • R' and R are identical or different and represent a Csubl to Csubl9 alkyl radical or Csub3 to Csubl 5 alkylene group or branched Csub4 to 15 alkylene group, the unit (R 1 O). sub.n represents a poly(ethylenoxy) or poly(propylenoxy) group, n is an average value ranging from 5 to 200, and Z represents an acetate anion.
  • a textile treated with a composition comprising a polyorganosiloxane having the formula A or Q and an active agent.
  • the polyorganosiloxane of the invention has the formula B:
  • T represents an amino group of formula: -(NMe(CHsub2)subl 1/13Me) + Z " wherein Z represents an acetate anion.
  • the polyorganosiloxane acts as a carrier to introduce the active agent to the fibres of the textile.
  • the amino and/or poly ether functions on the polyorganosiloxane allow adhesion to the textile by preferentially interacting with the biocidal agents and the textile.
  • composition of the invention provides protection of textiles for a considerable time after application and will remain active after washing. This is advantageous over conventional biocides which quickly lose their efficacy after application particularly if the textile is washed.
  • the biocides in the composition of the invention may be held to the textile by a polymer which is based on a polyorganosiloxane. This helps to prevent the biocides from leaving the textile during washing.
  • the composition may be effective at killing micro organisms under dry or wet conditions.
  • composition may be diluted before applying it to the textile, such as by 1 to 100 fold or 1 to 1000 fold.
  • the method of the present invention may utilise the composition of the present invention.
  • the present invention also provides a textile having a biocidal composition impregnated thereon which is durable to repeated washing of the textile so as to provide durable biocidal activity. Fabrics treated according to the method of the present invention have been found to retain biocidal properties after ten and more washes.
  • the textile may be a flame retardant textile.
  • the treated textile may be a plain fabric.
  • the present invention also provides a textile having biocidal activity.
  • Other 'dual function' or multi-function textiles may also be prepared, including waterproof/biocidal, crease proof/biocidal and stain resistant/biocidal textiles.
  • the present invention also provides a flame retardant textile having biocidal activity.
  • Articles may include cubicle curtains, mattress covers and sheets.
  • the present invention also provides an article formed from a textile as described herein.
  • a composition for use in providing a textile with a biocidal property comprising a polyorganosiloxane polymer having the formula Q: T 1 R 1 R 2 SiO(R 3 R 4 SiOMR 5 T 2 SiO) 8 SiR 6 R 7 T 3 wherein, the symbols R 1 , R 2 , R 3 , R 4 , R 5 , R 6 and R 7 , which are identical or different, represent a phenyl or a Ci to C 6 alkyl radical, and the symbols T 1 , T 2 and T , which are identical or different, represent a phenyl or a Ci to Ce alkyl radical, or an alkyl radical of the formula: -R 8 -O-R 9 -X wherein, the symbols R 8 and R 9 , which are identical or different, represent a Ci to Ce alkyl radical, and the symbol X represents a primary alcohol, or a quaternary amine of the formula:
  • R 10 , R 1 1 , R 12 which are identical or different, represent a Ci to C i 9 alkyl or alkylene group, linear or branched chain, z represents an acetate anion; r is an average value ranging from 1 to 500; s is an average value ranging from 1 to 10; and
  • Formula Q may be further defined in that the Ci to C 6 alkyl radical of at least one of the R 8 or R 9 groups contains at least one secondary alcohol group.
  • Formula Q may be further defined in that R comprises -(CH 2 )3-.
  • Formula Q may be further defined in that R 9 comprises -CH 2 CHOHCH 2 -.
  • Formula Q may be further defined in that X represents at least one primary alcohol group.
  • Formula Q may be further defined in that X represents at least one quaternary amine group.
  • Formula Q may be further defined in that X represents a quaternary amine group of the formula:
  • Formula Q may be further defined in that T comprises -(CH 2 ) 3 NH 2 .
  • Formula Q may be further defined in that at least one of T 1 or T 3 is a Methyl group.
  • Formula Q may be further defined in that r has a value ranging from 1 to 300, preferably ranging from 1 to 200 and more preferably 1 to 80.
  • r represents a value of 80.
  • Formula Q may be further defined in that s represents a value ranging from 1 to 10, preferably ranging from 1 to 5.
  • Formula Q may be defined as:
  • the symbol W occurs in the molecule at least four times, and is defined by at least two hydroxyl groups and at least two amine groups of the formula: -N(Me 2 Y) + Z- wherein, the symbol Y represents a Cu to Cn alkyl radical; the symbol Z represents an acetate anion, and r is an average value ranging from 1 to 200; s is an average value ranging from 2 to 5.
  • Formula Q can take the form:
  • the reason for having a large r value such as 80 (shown above) is to prevent steric hindrance which may be caused by the large quaternary amine groups. Accordingly, s has a small value such as 2 (shown above) to minimise the number of repeat units, which may contain large quaternary amine groups, thereby further preventing steric hindrance.
  • the terminal quaternary amine groups are attached to the siloxane backbone with the aid of linking ether groups, such as ROR (-CH 2 CHOHCH 2 -O-(CH 2 ) 3 -) because the quaternary amine groups in themselves are too large to attach to the siloxane backbone directly. Once again this form of structure prevents steric hindrance, thereby providing stability to the overall structure.
  • Formula Q may be defined as:
  • Formula Q hereinafter referred to as Polymer 2
  • Polymer 2 may take the form:
  • r has a value of 300 and s has a value of 6.
  • This form of Formula Q effectively defines a second polymer which may be used in combination with a first polymer described earlier.
  • the repeating units within the polymer chain may be partly, predominantly or completely defined by dimethylsiloxane.
  • the active agent may be selected from the group consisting of a biocidal, anti- microbial, bactericidal, fungicidal, germicidal, yeasticidal, moldicidal, algicidal and virucidal agent.
  • a composition formed in accordance with the present invention may be incorporated into a functional textile material.
  • a process for use in treating a surface comprising applying an effective amount of a composition comprising one or more polyorganosiloxane polymers formed according to the present invention and an active agent to the surface.
  • a textile treated with a composition as described herein and an active agent there is provided a textile treated with a composition as described herein and an active agent.
  • composition for use in treating a surface comprising at least two different polyorganosiloxane polymers.
  • the polyorganosiloxane (which may comprise one polymer type or a blend of two or more polymer types) may be present in the composition in an amount of 5% to 95% by weight based on the weight of the composition. It is preferred that the polyorganosiloxane is present in an amount of from 10% to 50% and particularly preferred from 30% to 40% by weight based on the weight of the composition.
  • the composition may comprise a blend of between 5 to 95% of each polymer.
  • the active agent may be contained in a non-volatile carrier.
  • the active agent of the composition of the invention may be selected from the group consisting of a biocidal, anti-microbial, bactericidal, fungicidal, germicidal, yeasticidal, moldicidal, algicidal and virucidal agent.
  • the active agent or combination of agents selected may depend on the polymer composition used and on the intended use of the composition, in particular may be based on the type of micro organism that is required to be killed by treatment of the surface or implement with the composition of the invention.
  • the active agent may comprise one or more biocidal agents.
  • the biocidal agent may be selected from cationic, amphoteric, amino, phenolic and halogen containing biocides.
  • biocides which may be used include:
  • Cationic biocides such as quaternary monoammonium salts, for example Cocoalkylbenzyldimethylammonium, Q 2 - Ci 4 alkylbenzyldimethylarnrnonium, cocoalkyldichlorobenzyldimethylarnmoniurn, tetradecylbenzyldimethylammonium, didecyldimethylammonium and dioctyldimethylammonium chlorides,
  • quaternary monoammonium salts for example Cocoalkylbenzyldimethylammonium, Q 2 - Ci 4 alkylbenzyldimethylarnrnonium, cocoalkyldichlorobenzyldimethylarnmoniurn, tetradecylbenzyldimethylammonium, didecyldimethylammonium and dioctyldimethylammonium chlorides,
  • Myristyltrimethylammonium and cetyltrimethylammonium bromides Monoquaternary heterocyclic amine salts such as laurylpyridinium, cetylpyridinium and C 12 - Cn alkylbenzyldimethylammonium chlorides, Triphenylphosphonium fatty alkyl salts such as myristyltriphenylphosphonium bromide;
  • Polymeric biocides such as those derived from the reactions Of epichlorohydrin and dimethylamine or diethylamine, Of epichlorohydrin and imidazole, Of 1, 3-dichloro-2-propanol and dimethylamine,
  • Amphoteric biocides such as derivatives of N-(N'- C 8 - Ci 8 alkyl-3- aminopropyl)glycine, of N-(N'-(N"- C 8 - Ci 8 alkyl-2-aminoethyl)-2-aminoethyl) glycine, of N,N-bis(N'- C 8 - Ci 8 alkyl-2-aminoethyl)glycine, such as (dodecyle) (aminopropyl) glycine and (dodecyl) (diethylenediamine) glycine;
  • Amines such as N-(3-aminopropyl)-N-dodecyl-l,3-propanediarnine;
  • Phenolic biocides such as para-chloro-meta-xylenol, dichloro-meta- xylenol, phenol, cresols, resorcinol, resorcinol monoacetate, and their derivatives or water-soluble salts; Halogenated biocides such as iodophores and hypochlorite salts, for example sodium dichloroisocyanurate;
  • the active agent may be contained in a non volatile carrier.
  • the non-volatile carrier may be water, a glycol, an ester derivative of a glycol or an ether derivative of a glycol.
  • alkylene glycols and poly alkylene glycols such as diethylene glycol and polyethylene glycol may be used.
  • the carrier may be an alcohol having from 3 to 30 carbon atoms, preferably at least 10 carbon atoms.
  • the active agent in the composition may be present in an amount of from 0.1% to 20% by weight based on the weight of the composition. It is particularly preferred that the active agent is present in an amount of from 0.2% to 11 % by weight based on the weight of the composition.
  • the active agent may comprise one or a combination of Bac 50,DDQ 50, SPX and MBS.
  • the polyorganosiloxane and the active agent may represent the main ingredients of the composition of the invention.
  • the composition may further comprise other ingredients, such as surfactants, chelating agents (such as aminocarboxylates, (ethylenediaminetetra-acetates, nitrilotriacetates, N,N-bis(carboxymethyl)- glutamates, citrates), alcohols (ethanol, isopropanol, glycols) detergency adjuvants (phosphates, silicates), dyes, and fragrances.
  • surfactants such as aminocarboxylates, (ethylenediaminetetra-acetates, nitrilotriacetates, N,N-bis(carboxymethyl)- glutamates, citrates), alcohols (ethanol, isopropanol, glycols) detergency adjuvants (phosphates, silicates), dyes, and fragrances.
  • chelating agents such as aminocarboxylates, (ethylene
  • the composition may further comprise a surfactant.
  • the surfactants which may be present in the composition of the invention may include: non-ionic surfactants such as ethylene oxide/propylene oxide block polymers, polyethoxylated sorbitan esters, fatty esters of sorbitan, ethoxylated fatty esters (containing from 1 to 25 units of ethylene oxide) polyethoxylated C 8 - C 22 alcohols (containing from 1 to 25 units of ethylene oxide), polyethoxylated Ce - C22 alkylphenols (containing from 5 to 25 units of ethylene oxide), alkylpolyglycosides, amine oxides (such as Cio - Ci 8 alkyldimethylamine oxides, C 8 - C 22 alkoxyethyldihydroxyethylamine oxides) amphoteric or zwitterionic surfactants such as C O - C 20 alkylamphoacetates or amphodiacetates (such as cocoamphoacetates),
  • the composition may be in the form of an aqueous composition.
  • the polyorganosiloxane acts as a carrier to introduce the active agent to the surface, implement or the like to be treated by the composition of the invention.
  • the amino and/or polyether functions on the polyorganosiloxane allow adhesion to the treated surface by preferentially interacting with the biocidal agents and the surface.
  • the composition of the invention provides disinfection of surfaces for a considerable time after application and will remain active after washing and/or abrading (polishing). This is advantageous over conventional biocides which quickly lose their efficacy after application particularly when the treated surface is washed or abraded.
  • composition When the composition is applied to a surface or instrument, it may form a coating layer thereon which contains one or more active agents, preferably biocidal agents, so that any micro organisms present on or subsequently contacting the surface or instrument are killed. If the composition further comprises a surfactant, this may enhance the spreading ability of the composition over substantially the entire surface whilst imparting cleaning and detergent properties to the composition.
  • active agents preferably biocidal agents
  • the composition is effective at killing micro organisms under dry or wet conditions.
  • composition may be used in different environments, that is in the medical or health care industry, for example in hospitals, in the food industry, for example in manufacturing plants and restaurants, in the commercial environment.
  • the composition may be diluted before applying it to a surface or implement, such as by 1 to 100 fold or 1 to 1000 fold.
  • the composition may be effective at controlling the proliferation and/or elimination of many types of micro organisms, including gram-positive and gram- negative bacteria, such as: Bacillus cereus, Bacillus subtilis, Brevibacterium ammoniagenes, Brucella abortus, Klebsiella pneumonia, Lactobacillus casei, Proteus vulgaris, Listeria monocytogenes, Pseudomonas aeruginosa, Salmonella gallinarum, Salmonella typhosa, Staphylococcus aureus, Steptococcus faecalis, Flavobacterium species, Bacillus species, Escherichia species, Aeromonas species, Anchromobacter species and Alcaligenes species, fungi such as: Cephalosporium species, Cladosporium species, Fusarium species, Paecilomyces species, Penicillium species
  • composition as described herein for use in providing a textile with a biocidal property.
  • the formulation was prepared by measuring the required volume of the biocides with a pipette and adding them to a 100ml volumetric flask. The volume of polymer required was also measured and added.
  • the formulation was prepared according to the following recipe:
  • Raw Material 1 8.0 % (1.5 % active 3 : 1 CIT:MIT)
  • Raw Material 2 20 % (50 % active Quaternary alkylbenzyl dimethylammonium chloride)
  • Raw Material 3 30 % (Approx. 20 % active polymer)
  • the solution was mixed on a shaker and the volume adjusted to 100ml with water. Three dilutions of the formulation were tested, concentrated, 1 in 10 and lin 20. The diluent used was water.
  • CFU colony forming units
  • solution 1 demonstrates a greater durability to washing and wiping then solution 2.
  • Raw Material 1 is a mixture of benzisothiazolone and methylisothiazolone at 5% total activity.
  • Raw Material 2 is a mixture of chloromethylisothiazolone and methylisothiazolone at 1.5% total activity. CAS Nos. 26172-55-4 and 2682-20-4
  • Raw Material 3 is a solution of cocoalkyl dimethylbenzyl ammonium chloride at 50% activity. CAS No. 61789-71-7
  • Raw Material 4 is a solution of 50% di-n-decyl dimethyl ammonium chloride stablised with 20% propan-2-ol.
  • Raw Material 5 is an appoximate 20 % solution of a di-quaternary terminated polydimethylsiloxane polymer stabilised with an alophatic alcohol ethoxylate at ⁇ 5% (CAS Nos. not available).
  • Versions may also be formulated without the isothiazolanes, where a quick contact kill rate is not necessarily required. This is appropriate to fabric treatment because what is required of the textile is the prevention of organism growth rather than contact killing.
  • An alternative formulation may comprise Polymer 2. This formulation is the same as described in Table 1 except that polymer 2 is added to polymer 1 (pre-mixed) before adding to the remaining components.
  • the combination of polymers 1 and 2 may amount to at least 10% Active Ingredient. Accordingly, the amount of water in the formulation would be reduced to compensate for the addition of the second polymer.
  • the ratio of different polymer derivatives in the composition polymer component in such formulations where multiple polymers are used may be any suitable level, usually between 5% and 95%.
  • Polymer 2 may, of course, also be used independently of Polymer 1.
  • the isothiazolone type and content of each formulation influences in particular, the shelf life of the formulation.
  • the shelf life of formulation C is greater than that of formulation B, which in turn is greater than that of formulation B, as exemplified below:
  • Formulation C has an indefinite shelf life, as shown from accelerated ageing tests at up to 60 0 C for 48 hours, where no visible changes were observed.
  • Formulation B has a shelf-life of at least 3 months. However, a colour change is observed after 40 hours during accelerated ageing tests carried out at 60 0 C. The concentration of CIT in the formulation dropped to about 60 % of its original value after 3 months natural storage, whilst the MIT concentration remained at over 90
  • Formulation A demonstrated a shelf-life of at least six months in corresponding accelerated ageing tests.
  • formulation C remained unchanged, whilst formulation A demonstrated only marginal changes.
  • the observed changes affected only the isothiazolones in the formulation and do not compromise the remainder of the formulation.
  • F. Kill Rates The kill rate per minute was measured for each formulation against E.coli (0157), S.enteritidis, K.pneumoniae, C. albicans and MRSA by applying a 7 day application of a 1 :20 dilution. This 7 day application of a 1 :20 dilution involves challenging treated surfaces with bacteria after increasing lengths of time to see if the bactericide was still working, as follows: A batch of clean plates were sprayed with the appropriately diluted formulation and leaving to dry. After various time intervals, the plates were then challenged with bacterial cultures and incubated for testing. The resulting plates were then compared with plates sprayed with the same bactericide in the absence of polymer.
  • a 100 % kill rate in 1 minute was achieved against all the above-mentioned bacteria by a 1 :20 dilution of the formulation.
  • the speed of kill for each formulation appears to corresponds to the stability of the formulation in that the lower the stability of the formulation, the greater the speed of kill, such that formulation B demonstrates a greater speed of kill that formulation A, which in turn demonstrates a greater speed of kill than formulation C.
  • speed of kill is less important since, by definition, residual biocides have long contact times.
  • the formulations exemplified above exhibit antibacterial activity, as evidenced by the biocidal properties of the formulations.
  • the kill spectrum is very similar for all of formulations A, B and C.
  • these particular formulations also have proven fungicidal properties. This ability to effectively disinfect surfaces of bacteria, fungi (including yeast) as well as remain useable over a significant period of time allows the use of the formulations as disinfecting agents for the treatment of surfaces in, for example, the food and beverage industry, hospitals and the veterinary industry, where the formulations may be used, for example, to treat working surfaces and equipment, all industries in which high regulatory standards are applied and strict controls are maintained in respect of hygiene.
  • formulations A, B and C demonstrate a low speed of kill for Mycobacterium.
  • the pH needs to be carefully controlled.
  • formulation D (detailed below) demonstrates excellent results against Mycobacterium.
  • Raw Materials 4 and 5 are as for formulations A, B and C
  • Raw material 6 is 2-aminoethanol, CAS No. 141-43-5.
  • Raw Material 7 is a 30% solution of trisodium ethylenediamine disuccinate, CAS No. 178949-82-1.
  • Raw Material 8 is a 90% solution of an alcohol ethoxylate, CAS No. 68439-45-2.
  • Raw Material 7 can be replaced by 6% of Raw Material 9, a 40% solution of tetrasodium ethylenediamine tetra-acetate, CAS No. 64-02-8, increasing the water to 37.0% to make Formulation E.]
  • FIG. 1 there is shown a flow diagram illustrating the steps in a method according to the present invention.
  • the treatment method generally indicated 10 commences at step 20 by dipping a sheet of textile (such as cotton, polyester, nylon or wool) into a volume of liquid biocidal composition so as to saturate the textile with composition.
  • a sheet of textile such as cotton, polyester, nylon or wool
  • the textile is passed through a pad mangle to impregnate the composition into the fibres of the textile and remove some excess composition.
  • the impregnated textile is dried by heating, for example in a stentor heating machine. This drying step may be carried out, for example, by a temperature between 50 0 C to 200 0 C, 50 0 C to 100 0 C, 100 0 C to 150 0 C or 150 0 C to 200 C. A temperature of 200 C is preferred in some cases.
  • the composition is fixed into the textile by baking in a baker.
  • the baking temperature may, for example, be in the range of 100 0 C to 300 0 C, 100 0 C to 200 0 C, 200 0 C to 300 0 C or 150 0 C to 250 0 C.
  • a textile treated in this way has been found to provide biocidal activity which persists even after repeated washing.

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  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Textile Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Pest Control & Pesticides (AREA)
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  • Agronomy & Crop Science (AREA)
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  • Wood Science & Technology (AREA)
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  • Biochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Microbiology (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)

Abstract

L'invention concerne un procédé de traitement (10) permettant d'obtenir un textile possédant une propriété biocide durable qui résiste au lavage. Ce procédé consiste à saturer le textile à l'aide d'une composition biocide liquide (20), à imprégner le textile d'une composition biocide à l'aide d'une machine à repasser (30), à sécher le textile pour éliminer l'excédent de composition par chauffage (40), puis à soumettre le textile à un séchage énergique pour fixer la composition (50). L'invention concerne également une composition destinée à être utilisée avec ce procédé.
PCT/GB2005/005092 2004-12-24 2005-12-23 Textile possedant une activite biocide WO2006067516A2 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB0428288.5 2004-12-24
GB0428288A GB0428288D0 (en) 2004-12-24 2004-12-24 A textile with biocidal activity
GB0500741.4 2005-01-14
GB0500741A GB0500741D0 (en) 2005-01-14 2005-01-14 A textile with biocidal activity

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WO2010097639A3 (fr) * 2009-02-27 2011-04-21 Bio Technics Limited Composition de désinfectant comprenant un composé de biguanide

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JPH07206615A (ja) * 1993-11-25 1995-08-08 Dainippon Jochugiku Co Ltd 防虫剤組成物
WO1998018998A1 (fr) * 1996-10-29 1998-05-07 Senecal Rene E Insecticide hydrofuge pour toile de tente
EP1045065A1 (fr) * 1999-04-14 2000-10-18 Toray Industries, Inc. Structure textile contenant des fibres cellulosiques
EP1464752A2 (fr) * 1994-03-21 2004-10-06 Craig A. Rubin Textile traité

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EP0607796A1 (fr) * 1993-01-19 1994-07-27 Th. Goldschmidt AG Non-tissés doux et méthode pour adoucir des non-tissés
JPH07206615A (ja) * 1993-11-25 1995-08-08 Dainippon Jochugiku Co Ltd 防虫剤組成物
EP1464752A2 (fr) * 1994-03-21 2004-10-06 Craig A. Rubin Textile traité
WO1998018998A1 (fr) * 1996-10-29 1998-05-07 Senecal Rene E Insecticide hydrofuge pour toile de tente
EP1045065A1 (fr) * 1999-04-14 2000-10-18 Toray Industries, Inc. Structure textile contenant des fibres cellulosiques

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010097639A3 (fr) * 2009-02-27 2011-04-21 Bio Technics Limited Composition de désinfectant comprenant un composé de biguanide
CN102387703A (zh) * 2009-02-27 2012-03-21 生物技术有限公司 包括一种双胍化合物的消毒剂组合物
CN102387703B (zh) * 2009-02-27 2015-11-25 生物技术有限公司 包括一种双胍化合物的消毒剂组合物

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