Classifications

• • 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
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10S428/00—Stock material or miscellaneous articles
  • Y10S428/907—Resistant against plant or animal attack

Definitions

• a cotton fabric is reacted with the chlorine atoms of p-N(4,6-dich1oro)-striazinylaminobenzene-carboxylic or -sulfonic acid and the acid group is thereafter reacted with a bactericidal quaternary ammonium salt or an N-chloro-phenyl-alkylene polyamine.
• the resulting products are bactericidal, free from attack by mildew and suitable for autosterile surgical dressings.
• the present invention relates to the antimicrobial finishing of textile materials, especially cellulose-containing textile material.
• Textile articles are often prone to attack by microorganisms such as mildew, fungi, and the like, resulting in discoloration, odor and, frequently, destruction. Attempts have been made to overcome this problem by impregnation with various agents but this is often attended by a change in hand, e.g. stiffening, by its own change in color, loss of abrasion resistance, etc. Moreover, the treatment is not permanent, the agent being lost in washing or dry cleaning. It is accordingly an object of the present invention to provide textile materials which are resistant to microorganisms but retain all the usual desirable characteristics of textiles and which, further, permanently retain the desired properties.
• Any textile material having a reactive hydrogen may be used for the instant purposes including cotton, rayon, paper, cellulose acetate, polyvinyl alcohol, wool, and the like, the cellulosics being especially preferred.
• reactive ionic substances which can be linked chemically with the textile material, for example cotton, so that a lastingly, partially anion-active textile material is formed
• the textile material for example cotton
• p-N(4,6-dichloro-)s-triazinyl-aminobenzoic acid and p-N-(4,6-dichloro-)s-triazinyl-aminobenzene-sulfonic acid as well as monochloroacetic acid, chloromethylphosphonic acid and unsaturated aliphatic carboxylic acids, for example haloacrylic acids and acetylenemonoor dicarboxylic acid.
• Such compounds aifix themselves to the textile base by losing their halogen atoms which react with the reactive hydrogen of the base or by condensation at the unsatu- 3,817,702 Patented June 18, 1974 without loss of anti-microbial effectiveness, bactericidal quaternary ammonium salts and N-chloro-phenyl-alkylenepolyamines are suitable; for example benzyl-dimethyltetradecylammonium chloride, 3,4-dichlorobenzyl-dimethyl-dodecylammonium chloride, N -pentachlorophenyl-N dimethylbenzyltrimethylenediaminium chloride, N -pentachlorophenyl-N -dimethyl-(3,4-dichloro)benzyl trimethylenediaminium chloride (cf. Deutsche Offenlegungschrift (German Published Specification) 1,493,745) and N pentachlorophenyl hexamethylenediamine acetate (cf
• partially anion-active material for example, cotton fabric
• the production of partially anion-active material can be effected by treating the fabric with a 2-5 strength alkaline-aqueous solution of the reactive ionic substances concerned, possibly with addition of an electrolyte (for example NaCl, Na SO for 10-40 minutes at 40-60 C. It is also possible to proceed by impregnating the fabric at room temperature with an alkaline-aqueous solution of the reactive ionic substances concerned, subsequently squeezing off and, possibly after a preliminary drying at about 70 C., thermofixing at l50 C.
• an electrolyte for example NaCl, Na SO for 10-40 minutes at 40-60 C.
• the subsequent fixation of the cation-active microbicide concerned may be effected by causing it to be absorbed by the alkaline-reacting, partially anion-active textile material from an aqueous solution for about half an hour at 50-60 C.; squeezing off may then be effected and the textile material freed from unfixed portions of active compound by washing.
• the amounts of cation-active microbicides required for the lasting antimicrobial finishing of partially anion-active textile material are governed by what is demanded of the finish, and can in each case be readily ascertained by preliminary experiments; in general, 0.251% in the treatment bath is sufiicient.
• the cation-active microbicides concerned are absorbed better and more lastingly on partially anion-active textile material than on normal textile material; the antimicrobial finish of textile material attainable with the aid of the process according to the invention is therefore distinguished by a particularly high fastness to washing.v
• the textile materials produced in accordance with the invention are microbicidal since it might have been expected that the agents would lose their potency when tied to the textile material in salt formation.
• certain hygiene problems such as may occur in textile materials, can be successfully solved.
• the process is useful in the control of pathogenic bacteria and fungi, as well as in avoiding or reducing cross-infections during laundering or other cleaning.
• the process according to the invention permits the production of autosterile dressings and other microbicidal textile material which can be used in hospitals, for example for wrapping sterilized surgical instruments, or in bacterio EXAMPLE 1
• De-sized cotton fabric is treated at 40 C. with a suspension of 2% p-N-( 4,6-dichloro) s triazinylaminobenzoic acid (I) in water which also contains 0.05%
• the fabric is soapecl at EXAMPLE 3
• De-sized cotton fabric is impregnated (2 passages) at room temperature with a freshly prepared solution which, per liter contains 50 g. NaOH, 25 g. chloroacetic acid and 1 g. of a non-ionic wetting agent.
• the fabric is subsequently dried at 120-140 C. for thermofix-ation and then transferred to a bath having a temperature of 55 C. and containing, per liter, 2.5 g. N -pentachlorophenylhexamethylenediamine acetate; liquor ratio 1: 15.
• the pH of the bath is adjusted to 8.5 after introduction of the fabric.
• EXAMPLE 4 De-sized cotton fabric is treated as stated in Example 3, with the difference that N -pentachlorophenyl-N -dimethylbenzyltrimethylene diaminium chloride is used g./liter) as cation-active compolmd and there is no regulation of pH. After rinsing, the fabric is, in the manner indicated in Example 1, watered and tested for resistance to rotting; the losses of resistance to tearing are, on average, 2% compared with 100% and 88% respectively, in the case of a fabric which was only partially carboxymethylated and a fabric which was only treated with the cation-active compound.
• EXAMPLE 5 De-sized cotton fabric is treated and tested for resistance to rotting in the manner indicated in Example 3 except that, as cation-active compound, N -pentachlorophenyL-N- -dimethyl (3,4-dichloro) benzyltrimethylenediaminium chloride is used (5 g./liter). The losses of resistance to tearing are on average, 4%, compared with 82% in the case of a fabric which was only treated with the cation-active compound.
• EXAMPLE 6 De-sized cottom fabric is treated as stated in Example 5, with difference that not 5 g./liter but 10 g./liter of cation-active compound are used. After rinsing and watering, the fabric is 12 times soaped at the boil or washed 12 times with a commercial cold-washing agent and then, in the manner indicated in Example 2, tested for anti-bacterial effectiveness. In both cases, the fabric still possesses a good anti-bacterial effectiveness. A fabric which was not carboxymethylated and was only treated with the cation-active compound, however, no longer shows any anti-bacterial effectiveness after soaping 5 times or cold-washing 5 times.
• EXAMPLE 7 De-sized cotton fabric is impregnated (3 passages) at room temperature with a freshly prepared solution which contains per liter, 70 g. NaOH and 50 g. chloromethylphosphonic acid. After squeezing off, drying at ISO-140 C. is effected, followed by thermofixation for a further 5 minutes at 130-140" C., before the fabric is transferred for 30 minutes to a bath which, per liter, contains 10 g. benzyldimethyltetradecylammonium chloride. After rinsing and Watering twice in the manner indicated in Example 1, testing for resistance to rotting is effected: the tear value losses are, on average, 3%. As against this, a fabric treated only with chloromethylphosphonic acid or only with the cation-active compound rots completely loss of resistance to tearing).
• EXAMPLE 8 De-sized cotton fabric is impregnated (3 passages) with a solution which, per liter, contains 200 g. NaOH, 50 g. acetylenedicarboxylic acid and 1 g. of a non-ionic wetting agent. After squeezing otf, drying at 100 C. is effected, followed by thermofixation for 10 minutes at 100 C. Treatment with cation-active compound is then carried out in the manner indicated in Example 2.
• the fabric Before testing for rot resistance as indicated in Example l, the fabric is watered twice for 24 hours. The fabric proves to be so rot-resistant that no measurable loss of rot resistance occurs. Moreover, the fabric is outstandingly anti-bacterially effective, even after soaping 12 times with a non-ionic detergent; 4 times soaping at the boil with an anion-active detergent likewise does not adversely affect the anti-bacterial effectiveness.
• the textile material can be rendered anion-active by a treatment in fabric form.
• the treatment can be carried out on the textile in the form of a yarn or staple fibers.
• synthetic fibers it is even posible to carry out the treatment at the resin stage or possible even during the formation of the resin as by copolymerization.
• the treatment with the cationic microbicide can similarly be carried out at various stages of processing such as on finished garments, fabrics, yarns, fibers, resins or even monomers.
• the cationic microbicide treatment can immediately follow the treatment to render the material anion-active or it can be carried out one or more steps later.
• anion-active sites can be varied widely and the particular selection will depend upon the type and extent of microbicidal treatment desired.
• its content of anion-active sites will have to be greater to impart the desired level of activity to the resulting product.
• the degree of substitution should not be so great that the usual desirable properties of the textile material suffer unduly.
• the eflicacy and purpose of the microbicidal agent attached to the anionactive site is also significant. Thus stronger agents can be utilized in lesser amounts; if it is merely desired to prevent growth of undesirable organisms a lesser amount is needed than if it is desired that the textile material actively attack undesired microorganisms in the vicinity.
• microbicidal agent need not be employed in such quantity as will form salts with all of the anion-active sites, i.e. the desired level of microbicidal activity may be achieved with only some of the anion-active sites neutralized with microbicide.
• microbicide is fixed to the anion-active textile material by being absorbed thereon from an aqueous solution in which the textile material is maintained at about 50-60" C., followed by squeezing 011 and washing ofi unfixed portions of active material.

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• Life Sciences & Earth Sciences (AREA)
• Chemical & Material Sciences (AREA)
• Biochemistry (AREA)
• Chemical Kinetics & Catalysis (AREA)
• General Chemical & Material Sciences (AREA)
• Microbiology (AREA)
• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
• Agricultural Chemicals And Associated Chemicals (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=5753950

Family Applications (1)

Country Status (8)

Cited By (17)

Family Cites Families (2)

• 1969
  • 1969-12-16 DE DE1962899A patent/DE1962899B2/de active Granted
• 1970
  • 1970-11-20 GB GB1295375D patent/GB1295375A/en not_active Expired
  • 1970-12-02 US US00094532A patent/US3817702A/en not_active Expired - Lifetime
  • 1970-12-11 NL NL7018137A patent/NL7018137A/xx not_active Application Discontinuation
  • 1970-12-14 SE SE7016920A patent/SE387669B/xx unknown
  • 1970-12-16 FR FR7045415A patent/FR2070889B1/fr not_active Expired
  • 1970-12-16 CH CH1864270D patent/CH1864270A4/xx unknown
  • 1970-12-16 CH CH1864270A patent/CH537696A/de unknown
  • 1970-12-16 BE BE760411A patent/BE760411A/fr unknown

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