Classifications

• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
  • D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
  • D06L4/60—Optical bleaching or brightening
• • 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
  • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
  • D06M13/322—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing nitrogen
  • D06M13/35—Heterocyclic compounds
  • D06M13/355—Heterocyclic compounds having six-membered heterocyclic rings
  • D06M13/358—Triazines
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D251/00—Heterocyclic compounds containing 1,3,5-triazine rings
  • C07D251/02—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings
  • C07D251/12—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members
  • C07D251/26—Heterocyclic compounds containing 1,3,5-triazine rings not condensed with other rings having three double bonds between ring members or between ring members and non-ring members with only hetero atoms directly attached to ring carbon atoms
  • C07D251/40—Nitrogen atoms
  • C07D251/54—Three nitrogen atoms
  • C07D251/68—Triazinylamino stilbenes
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/16—Organic compounds
  • C11D3/26—Organic compounds containing nitrogen
  • C11D3/28—Heterocyclic compounds containing nitrogen in the ring
• • 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
  • D06M2200/00—Functionality of the treatment composition and/or properties imparted to the textile material
  • D06M2200/25—Resistance to light or sun, i.e. protection of the textile itself as well as UV shielding materials or treatment compositions therefor; Anti-yellowing treatments

Definitions

• the present invention relates to a process for improving the sun protection factor (SPF) of cellulosic fibre materials and blends thereof, which comprises treating the cellulosic fibre materials with at least fluorescent whitening agent (FWA) and preferably additionally at least one reactive UV absorber.
• FWA fluorescent whitening agent
• the invention moreover relates to new fluorescent whitening agents useful for that process.
• UV radiation The skin-damaging effect of UV radiation is well known. Protection from strong sunlight is usually sought by applying a sun cream, a composition that contains a UV absorber, directly to the skin. In particularly sunny regions, for example in Australia or America, however, the rate of skin damage due to UV radiation has recently been increasing dramatically. Accordingly, more attention is paid in these countries to protecting the skin from solar irradiation.
• the skin should be protected not just directly, but also to reduce the UV transmissibility of the clothing and also of other sun protection articles, such as awnings or parasols.
• cellulosic fibre materials are at least partially transparent to UV radiation, so that the mere wearing of clothing does not offer adequate protection to the skin from damage due to UV radiation.
• a remedy is possible here by incorporating UV absorbers and/or FWA's into the fibre material.
• the present invention provides a process for improving the sun protection factor (SPF) of cellulosic fibre materials and blends thereof, which comprises contacting said materials with at least one compound of formula
• M is hydrogen, an alkali metal atom, ammonium or a cation formed from an amine
• Pv, and P ' independently of each other are hydrogen, hydroxy, optionally substituted alkyl, 4-morpholinyl, -NH-R 3 , -N(R 3 ) 2 or -O-R 3 , wherein R 3 is optionally substituted alkyl or optionally substituted aryl, R 2 is a group of formula
• X is -O- or -NH- and F is C C 4 -alkyl which carries at least one hydrophilic substituent and R 2 ' has the meaning of ⁇ or R 2 .
• R 2 and R 2 ' can have different meanings. Preferably, however, they are identical.
• alkyl radicals are to be understood as being generally open-chain or branched alkyl radicals containing from 1 to 6 carbon atoms, for example methyl, ethyl, n- or iso-propyl, n-, sec- or tert-butyl or n-hexyl, n-octyl.
• Cycloalkyl is preferably cyclopentyl or cyclohexyl.
• R 3 as aryl is preferably independently of each other phenyl or naphthyl which are unsubstituted or substituted e.g. by Ci-Ce-alkyl, CrC 6 -alkoxy or a hydrophilic substituent.
• R-i and R ⁇ are identical and especially preferred is the use of a compound of formula (1), wherein Ri and R ⁇ are each are hydrogen, hydroxy, optionally substituted alkyl, -NH-R 3 , -N(R 3 ) 2 or -O-R 3 , wherein R 3 is optionally substituted alkyl or optionally substituted aryl.
• Ri and R ⁇ are hydrogen, hydroxy, unsubstituted C 1 -C 4 - alkyl or C ⁇ -C 4 -hydroxyalkyl, 4-morpholinyl, -NH-R 3> -N(R 3 ) 2 or -O-R 3 , wherein R 3 is unsubstituted CrC -alkyl or CrC 4 -hydroxyalkyl or unsubstituted phenyl or phenyl substituted by sulfo, C ⁇ -C 4 -alkylsulfonyl or C C 4 -hydroxyalkylsulfonyl.
• the hydrophilic substituent in the radical R> is preferably -OM, -COOM or SO 3 M in which M is hydrogen, an alkali metal atom, ammonium or a cation formed from an amine.
• the quantities of compound (1) to be applied to the cellulosic material according to the process of the invention may vary over a wide range. However, when used in amounts of between 0.001 and 2% by weight, based on the weight of the fibre material, useful effects may be obtained. Preferably, however, the amount of the compound of formula (1) used is from 0.005 to 1% and especially from 0.01 to 0,5% by weight, based on the weight of the fibre material.
• Cellulosic fibre materials are to be understood as meaning, for example, the natural cellulose fibre, such as cotton, linen and hemp, and also cellulose pulp and regenerated cellulose.
• the process of the invention is also suitable for treating hydroxyl-containing fibres present in blend fabrics, for example, blends of cotton with polyester fibres or polyamide fibres.
• the fibre materials used have a density of between 30 and 200g/m 2 , preferably between 100 and 150g/m 2 , the porosity of the material lying in the range of 0.1 to 3%, preferably 0.1 to 1.5%.
• the cellulosic fibre material used is cotton or a cotton blend.
• the fibres mentioned may be present in various forms, for example, as staple or yarns or as wovens or knits.
• a further aspect of the invention is to provide excellent sun protection factors for cellulosic fibre materials by the combined use of a fluorescent whitening agents of formula (1 ) and a UV absorber. Usually little or no observable reduction of the degrees of whiteness of the so-treated materials results.
• application of the UV absorber may be performed before, during or after treatment of the material with the FWA of formula (1 ).
• any UV absorber suitable for cellulosic fibre materials may be applied for this purpose.
• the UV absorber used may be, e.g., an o-hydroxybenzophenone, an o-hydroxy- phenylbenzotriazole, a 2-aryl-2H-benzotriazole, a salicylic acid ester, a substituted acrylonitrile, a substituted acrylaminoethylene, a nitrilohydrazone, o-hydroxyaryl-1 ,3,5- triazine, a sulphonated 1 ,3,5-triazine or preferably an oxalic anilide.
• UV absorbers are used and particularly preferred are the UV absorbers described in the U.S. Patent No. 5,700,295, especially the oxalic anilides.
• UV absorber Especially preferred as UV absorber are the compounds of formula:
• Li and L 2 independently of each other are hydrogen, sulpho, hydroxy, C 1 -C 4 -alkyl or
• C C 12 -alkoxy, x and y independently of each other are 1 , 2 or 3,
• n 2 or 3.
• a fibre-reactive group is to be understood as meaning such a group which is capable of reacting with the hydroxyl groups of the cellulosic fibre or with the amino groups of polyamide fibre materials to form covalent chemical bonds.
• Many such reactive groups are known, in particular from the chemistry of the so-called "reactive dyes".
• preferred fibre-reactive groups Z are those in which Z is a radical of the formula:
• Y' representing vinyl, ⁇ -sulphatoethyl, . ⁇ -thiosuiphatoethyl, ⁇ -phosphatoethyl, ⁇ -acyloxyethyl or ⁇ -haloethyl, especially those in which Z is a radical of formula (6) and Y represents - CH 2 CH 2 OSO 3 M, M being as defined previously.
• the liquor ratio can be chosen within a wide range, for example, from 3:1 to 200:1, preferably from 10:1 to 40:1. It is advantageous to operate at a temperature of 20 to 120°C, preferably 40 to 110°C.
• the fibre-reactive UV absorbers are applied advantageously in the presence of acid-binding agents, for example, sodium hydroxide, sodium carbonate, sodium bicarbonate, sodium formate, potassium carbonate, sodium silicate, sodium trichloroacetate or sodium triphosphate, in the presence or absence of neutral salts, for example, sodium sulphate or sodium chloride.
• acid-binding agents for example, sodium hydroxide, sodium carbonate, sodium bicarbonate, sodium formate, potassium carbonate, sodium silicate, sodium trichloroacetate or sodium triphosphate
• neutral salts for example, sodium sulphate or sodium chloride.
• the quantities of the UV absorbers to be applied to the cellulosic material according to the process of the invention may vary over a wide range. However, when used in amounts of between 0.005 and 1% by weight, based on the weight of the fibre material, useful effects may be obtained. Preferably, however, the amount of the compound of formula (1) used is from 0,01 to 0,5% by weight, based on the weight of the fibre material.
• the liquor add-on is advantageously 40-700, preferably 40-500, % by weight.
• the fibre material is then subjected to a heat treatment process to fix the applied FWA's and UV absorbers. This fixing can also be effected by the cold batching method.
• the heat treatment preferably takes the form of a steaming process in a steamer with ordinary or superheated steam at a temperature of 98 to 105°C for, for example,1-7, preferably 1-5 minutes.
• the fixing of the UV absorber by the cold batching process can be effected by storing the impregnated and preferably rolled-up material at room temperature (15 to 30°C) for 3 to 24 hours, for example, the cold batching time being known to depend on the UV absorber.
• the treated materials are conventionally rinsed, soaped, for example, for 20 minutes at 90°C with a solution containing 1g/I. of calcined sodium carbonate, and dried.
• the treatment bath may optionally contain other customary auxiliaries, for example, levelling, wetting deaerating and antifoaming agents, penetration accelerants or crease resisting agents.
• the cellulose fibre materials treated by the process of the present invention possess high sun protection factors.
• the sun protection factor is defined as the ratio of the harmful dose of UV energy on protected skin to the harmful dose of UV energy on unprotected skin. Accordingly, a sun protection factor is also a measure of the transmissivity of fibre materials untreated and of those treated with FWA's and reactive UV absorbers described in this invention.
• the sun protection factor can be determined, for example, by the method described by B.L.Diffey and J.Robson in J.Soc.Cosmet.Chem., 40, 127-133 (1989).
• M is hydrogen, an alkali metal atom, ammonium or a cation formed from an amine
• Ri and Ri' independently of each other are hydrogen, hydroxy, optionally substituted alkyl, 4-morpholinyl, -NH-R 3 , -N(Rs) 2 or -O-R 3 , wherein Rsis optionally substituted alkyl or optionally substituted aryl, R 2 is a group of formula
• X is -O- or -NH- and R4 is C C -alkyl which carries at least one hydrophilic substituent and R 2 ' has the meaning of R 1 or R 2 with the proviso that the compound of formula (1 ), wherein
• R T and R are each hydroxyethylamino
• R 2 and R 2 ' are each phenylamino which is substituted in p-position with hydroxyethyl- aminocarbonyl is excluded.
• the compounds of formula (1) can be prepared by known methods, e.g., by reacting, under known reaction conditions, cyanuric chloride, successively, in any desired sequence, with each of an aminostilbene-disulfonic acid and compounds capable of introducing the groups
• the compounds of formula (1) exhibit distinguished solubility in water combined with good affinity to cellulosic fibre material and aqueous formulations containing these compounds have excellent storage stability.
• the UV absorbers of formula (3) are known or may be prepared by known methods.
• the pH was controlled between 3 and 4.5 during the reaction using 2.77 g 20 % wt./vol. (17 % wt. ⁇ /vt.) sodium carbonate. Contents of the flask were light orange in color with the suspension having good stirability. HPLC verified that the reaction was complete, 96 - 97% purity.
• aqueous solution was prepared by diluting 5.98 g ethanolamine with 15 g water.
• the aqueous ethanolamine solution was added to the second step reaction product, slowly over a 2 hour period at 90 °C. pH was controlled between 7.5 and 8.0 by the addition of ethanolamine. During the addition, two phases were present.
• the reaction mixture was held at 90 °C with stirring. 25.2 g 32 % wt./wt. sodium hydroxide was used to make sure that the pH of the reaction mixture was maintained above 7.0. After 6.5 hours, HPLC indicated that the reaction was complete, 93 % pure.
• Example 9 If the procedure of Example 9 is repeated, but with samples of different cellulose fabric
• the temperature is then raised to 95 °C, g/l Glauber's salt (anhydr.) are added and the temperature is kept for 30 minutes. Then 10 g/l soda ash are added and after 20 minutes 0.2

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• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Life Sciences & Earth Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Wood Science & Technology (AREA)
• Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
• Compositions Of Macromolecular Compounds (AREA)
• Artificial Filaments (AREA)

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• 2002
  • 2002-02-11 US US10/504,945 patent/US7425222B2/en not_active Expired - Fee Related
• 2003
  • 2003-02-06 MY MYPI20030399A patent/MY139207A/en unknown
  • 2003-02-11 JP JP2003568152A patent/JP4359147B2/ja not_active Expired - Fee Related
  • 2003-02-11 CN CNA03804059XA patent/CN1633531A/zh active Pending
  • 2003-02-11 KR KR1020047012694A patent/KR100966483B1/ko not_active Expired - Fee Related
  • 2003-02-11 WO PCT/EP2003/001326 patent/WO2003069047A1/en not_active Ceased
  • 2003-02-11 MX MXPA04007994A patent/MXPA04007994A/es active IP Right Grant
  • 2003-02-11 EP EP20030704587 patent/EP1476601A1/en not_active Withdrawn
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  • 2003-02-11 BR BR0307736-5A patent/BR0307736A/pt not_active IP Right Cessation
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