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
  • 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
  • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
  • D06M11/01—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with hydrogen, water or heavy water; with hydrides of metals or complexes thereof; with boranes, diboranes, silanes, disilanes, phosphines, diphosphines, stibines, distibines, arsines, or diarsines or complexes thereof
  • D06M11/05—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with hydrogen, water or heavy water; with hydrides of metals or complexes thereof; with boranes, diboranes, silanes, disilanes, phosphines, diphosphines, stibines, distibines, arsines, or diarsines or complexes thereof with water, e.g. steam; with heavy water
• • 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
  • D06M13/50—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with organometallic compounds; with organic compounds containing boron, silicon, selenium or tellurium atoms
  • D06M13/51—Compounds with at least one carbon-metal or carbon-boron, carbon-silicon, carbon-selenium, or carbon-tellurium bond
  • D06M13/513—Compounds with at least one carbon-metal or carbon-boron, carbon-silicon, carbon-selenium, or carbon-tellurium bond with at least one carbon-silicon bond
• • 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
  • D06M23/00—Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process
  • D06M23/02—Processes in which the treating agent is releasably affixed or incorporated into a dispensing means

Definitions

• the present invention relates to a method of ironing clothes, an aqueous composition for use in a steam iron to carry out the method, and to a concentrate suitable for adding to water to produce an aqueous composition for use in the method.
• compositions which are diluted with water to give a aqueous product for addition to the water reservoirs of steam irons are commercially available in a number of countries. These compositions are used to prevent the formation of lime scale in the iron if water containing dissolved calcium and magnesium salts is used, and to give a pleasant fragrance to the cloth being ironed.
• US 5 409 619 discloses a composition for use in the steam chamber of a steam iron which comprises propylene glycol, glycerine, and optionally a volatile fragrance in deionized water.
• the composition is said to provide improved glide characteristics.
• a process for ironing cloth which comprises directing steam on to the surface of the cloth to deliver a lubricant to the cloth in the steam directed on to the cloth while applying heat and pressure to the cloth,wherein the lubricant is a steam-volatile silicone.
• an aqueous composition suitable for use in the water reservoir of a steam iron comprising a steam-volatile lubricant wherein the composition comprises a steam-volatile silicone and a sequestering agent.
• a concentrate suitable for addition to water to give a liquid suitable for use in a steam iron comprises a steam-volatile lubricant which is a steam-volatile silicone and a sequestering agent.
• the process of the present invention may be carried out using a conventional domestic steam iron having a reservoir for water communicating with openings in the sole (base) plate of the iron through which steam can be directed on to cloth which is being ironed.
• the reservoir may be incorporated in the iron or may be a separate component connected to the iron by a flexible tube.
• the lubricant is a silicone which is volatile in steam so that it can be carried to the cloth in the steam generated by the steam iron.
• the lubricant will not adversely affect the appearance or the feel of the cloth. It is preferred for the lubricant to be dispersible in water . If the lubricant is not itself dispersible in water, then a surfactant may be used to keep it dispersed.
• polydimethyl siloxanes modified by incorporation of polyoxyalkylene groups are also known as dimethicone polyols. Such compounds having surfactant properties are commercially available.
• Two types of block co-polymers are available. One type is a linear polydimethylsiloxane to which polyethers have been grafted (by a hydrosilation reaction) to give an alkyl pendant (AP) polymer with the polyalkylene groups linked to the siloxane backbone by Si-C bonds, which are hydrolytically stable.
• the preferred polymers have the formula where PE is a pendant group which is -CH 2 CH 2 CH 2 O(EO) m (PO) n Z and Z is lower alkyl, e.g. C 1 -C 4 .
• ethoxy and propoxy groups may be present in a ratio corresponding to an ethylene oxide to propylene oxide molecular ratio of 40/60 to 100/0 and molecular weights in the range 4000 to 81000. It is preferred to use dimethicone polyols with molecular weights in the range 10000 to 30000, e.g. 10000 to 22000.
• Another class of block co-polymer silicone surfactants are those obtained by condensing polyethers at the ends of the siloxane backbone through Si-O-C bonds.
• silicone compounds are the cyclic polydimethyl siloxanes, which are also known as cyclomethicones.
• the cyclic compounds are commercially available as the tetramers or pentamers. They may be obtained from Dow Corning under the designations Dc 244, 245, 344, and 345. These materials are water-insoluble and but may be emulsified with surfactants to give oil-in-water emulsions. The formula of the tetramer is given below.
• silicones which may be used in the invention are the lower molecular weight polydimethyl silicones -[Si(CH 3 ) 2- O-[Si(CH 3 ) n ]-O-[Si(CH 3 ) 2 ]- which are available in a range of molecular weights and viscosities. It is preferred to use polydimethyl silicones with a molecular weight in the range 1000 to 20000.
• the aqueous composition preferably contains a sequestering agent.
• the purpose of the sequestrant is to prevent the deposition of scale in the iron.
• suitable sequestering agents are diethylene triamine penta-acetate.
• the aqueous composition may contain a fragrance, as is used in known additives for steam irons.
• a fragrance solubilizer may be included in the composition.
• This may for example be a nonionic surfactant, for example sorbitan monolaurate 20EO, i.e. the product of reacting 20 molecules of ethylene oxide with each molecule of the sorbitan monolaurate.
• the composition preferably contains a preservative to protect it against microbial attack. Suitable preservatives are well-known. Thus 4,4-dimethyl oxazolidine may be used.
• the amounts of lubricant in the liquid which is vapourized to give the steam required in the ironing process may be in the range 0.001 to 5 % w/w of the total composition, preferably 0.001% to 0.4% w/w.
• the amount of any sequestering agent present may be, for example, in the range 0.003% to 5% w/w, preferably 0.003% to 0.2% w/w
• the concentrate which is mixed with water to give the aqueous composition used to deliver the lubricant in the ironing process may be a liquid, e.g. an aqueous liquid. Alternatively it may be a gel or a powder.
• the amount of lubricant in the concentrate may be 0.05% to 20%, preferably 2 to 8%, e.g. 5% w/w.
• the amount of any sequestering agent in the concentrate may be 0.2 to 10.00 % w/w, preferably 0.3 to 0.7% w/w.
• the amount of any fragrance present in the concentrate may be in the range 0.05% to 0.3%, e.g. 0.10% w/w.
• the amount of any fragrance solubilizer in the concentrate may be from 0.1 to 0.3% w/w, e.g. 0.2%.
• the remainder of the liquid may be water, preferably deionized water.
• a composition was prepared from the following ingredients. Ingredient %wt/wt Deionized water 96.10 Preservative 0.10 Perfume 0.10 Sequestering agent 1.00 Lubricant 2.5 Surfactant 0.2
• the preservative was 4,4-dimethyl oxazolidine, commercially available under the trade name "Bioban CS 1135".
• the sequestering agent was diethylene triamine penta-acetate, commercially available under the trade name "Dissolvine D50".
• the lubricant was a polyalkylene oxide silicone copolymer surfactant commercially available under the trade name "Silwet L7200" from OSi Specialities of Harefield, Middlesex, UK.
• the polymer was an alkyl-pendant (AP) polymer as described above. It had a molecular weight of about 19000 and the polyoxyalkylene oxide component was derived from a mixture of ethylene oxide and propylene oxide in the molecular ratio 75:25.
• the composition was prepared by mixing the ingredients together.
• a composition was prepared as in Example 1 except that the lubricant was a cyclic polydimethyl silicone pentamer commercially available from Dow Corning as DC 245.
• a composition was prepared as in Example 1 except that it contained no lubricant.
• compositions of Examples 1, 2, and comparative Test A were subjected to a test with a panel of users who tested them in random order using a separate ironing board and iron for each product.
• the products of Examples 1, 2 and Test A were tested at two different dilutions with tap water, namely 1:60 and 1:120 by volume.
• the composition of Comparative Test A was tested at a dilution of 1:60. The testers were then asked questions about the products tested. The higher the score reported, the greater the agreement with the proposition put to the testers.
• Example 1 (1:120) 5.92
• Example 1 (1:60) 5.83
• Example 2 (1:60) 5.75 Test A a low score was obtained

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• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Inorganic Chemistry (AREA)
• Organic Chemistry (AREA)
• Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
• Chemical Or Physical Treatment Of Fibers (AREA)

Applications Claiming Priority (2)

Publications (2)

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Family Applications (1)

Country Status (4)

Cited By (8)

Citations (3)

Family Cites Families (1)

• 1996
  • 1996-07-16 GB GBGB9614937.2A patent/GB9614937D0/en active Pending
• 1997
  • 1997-07-15 DE DE69726500T patent/DE69726500D1/de not_active Expired - Lifetime
  • 1997-07-15 EP EP97305222A patent/EP0819789B1/de not_active Expired - Lifetime
  • 1997-07-15 AT AT97305222T patent/ATE255654T1/de not_active IP Right Cessation

Patent Citations (3)

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