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
  • D06M15/6436—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicon in the main chain containing amino groups

Definitions

• a process for improving the crease strength of cellulose containing textiles wherein they are impregnated with clear to opalescent solutions or finely dispersed, permanent water-in-oil emulsions which contain emulsified water soluble methylol compounds of urea or cyclic alkylene ureas, about 2% to 8% water, a hardening catalyst in hydrocarbons or chlorated hydrocarbons with selected emulsifiers. They are then dried and if necessary condensed. This process again requires the use of a comparatively high amount of emulsifiers which considerably disturb the following hydrophobing. Furthermore, the resulting crease resistance is not satisfactory in all cases.
• agents for making water repellent organic fibrous materials which contain, among others, alkylhydrogenpolysiloxanes and aluminumisoalcoholates as catalysts.
• This known process discloses the simultaneous use of urea formaldehyde resins and melamine formaldehyde resins. This process has the drawback that due to hydrolysis sensitivity of the aluminum alcoholates it is necessary to operate entirely without Water. When operating without the use of protective gases a quick hydrolysis of the catalyst and a decomposition of the baths must be expected. In addition, water repellent effects produced by this process and possible crease resistance produced after the combination with artificial resins are extremely poor.
• An object of the present invention is the provision of a process for refining cellulose containing textiles with aminoplastresins and organopolysiloxanes from organic solvents which does not have the drawbacks of processes known in prior art.
• conditionally moist textiles are treated with baths containing solved 5 gr./l. to 60 gr./l. of an organically soluble artificial resin preferably etherified with lower monovalent alcohols, 5 gr./l. to 50 gr./l. of a hydrogenalkylpolysiloxane, at least 25 ml./l. of a polar solvent and at least 1.5 gr./l. of a dialkyltinacylate in a non-polar water-insoluble solvent.
• the textiles are freed from excessive bath, dried and condensed.
• All organically soluble preferably etherified aminoplastresins are suitable for the process of the present invention. It was found that particularly suitable aminoplastresins are uron-, melamine, and dihydroxylethyleneurea resins etherified with lower monovalent alcohols.
• aminoplast compounds can be mentioned individually: dimethoxy-d-imethylolethylene urea, dimethoxy-dimethylol propylene urea, d'imethoxyand dipropoxy-dimethyloltriazone, dimethoxydimethylole'thyland dimethoxy-di- .methyloloxy-ethylcarbamate, tetramethoxy-tetra-methylol- 3 acetylenediurea, acetal or hemiacetal of diethylene glycol, dimethoxy-dimethylolurea, highly etherified pentaor hexamethylolmel-amine, dimethoxyand di-n-butoxydimethyloluron and tetramethoxy-dimethyloldihydroxyethylene urea.
• the amount of etherified aminoplastresins is 5 gr. to 60 gr., preferably gr. to 40 gr. per liter of the treating bath, whereby the amount also depends upon
• catalysts for the process of the present invention are suitable d ialkyl-tinacylates, whereby their commercially available quality can be used.
• Alkyl residue has then more than 2, particularly 4 to 12 carbon atoms.
• acids those are used which have more than 1, particularly 4 to 18 carbon atoms.
• saturated or unsaturated dioarbonic acids with 4 and more carbon atoms.
• the following catalysts can be individually named: dibutyltindilaurate, dibutyltindiacetate, dibutyltinmaleate, dioctyltinmaleate, dioctyltindioctoate, dilauryltinsuccinate, dihexyltinadipate, dioctyltindistearate and dibutyltindi-Z-ethylhexoate. Particularly preferred are dibutyltindilaurate, d-ibutyltindiacetate and dibutyltinmale'ate.
• the amount of the catalysts is then at least 1.5 gr., preferably 2 gr. to 10 gr. per liter of the treating bath.
• polar solvents are suitable dimethylformamide, dimethylacetamide and specially lower alcohols, particularly mixtures of lower alcohols.
• polar solvents particularly suitable was found a mixture of methanol and isopropanol in the volume ratio of 3:1.
• the amount of the polar solvent is at least '25 ml., preferably 50 ml. to 200 ml. per liter of the treating bath.
• Hydrocarbons particularly halogenated hydrocarbons of technical quality were found to be suitable as organic, non-polar water-insoluble solvents used for the making of treating baths.
• solvents can be named: trichloroethylene, tetrachloroethylene, methylene chloride, chloroform, tetraehlorcarbon, 1,1,Z-trifiuortrichloroethane and 1,1,1-trichloroethane.
• Toluol, xylol, benzol and testbenzin are less suitable due to their combustibility.
• the baths can be made in any desired manner.
• the aminoplastresin and the hydrogenpolysiloxane, as well as the polar solvent are stirred jointly and diluted with the non-polar solvent.
• the catalyst is added.
• a waiting time of 3 to 8 hours is sufficient. Thereupon the bath is ready for use and the best possible results are then produced. Only after 2 or 3 days standing time there is a drop, particularly in the crease angle.
• the process of the present invention can be used for treating fabrics of cellulose fibers as well as those of regenerated cellulose fibers. Obviously it is also possible to treat mixed fabrics of cellulose; fibers and synthetic fibers, particularly polyester, -polyamideand polyaciylonitrile fibers to make them crease proof and hydrophobic in accordance with the process of the present invention. To carry out theprocess of the present invention it is absolutely necessary that the above-mentioned fabrics should be treated with the bath not when they are abso-' lutely dry but when they are in a conditionally moist state. It was found that already the action of the normal relative air moisture upon the moisture in the fabric is sufficient to provide very good results.
• conditionally moist textiles means the amount of moisture in percentage of the weight of the textiles received at the room temperature under certain relative moisture after the balance is set (see German book Handbuch der Maschinenstoffpriifung, 2 ed., vol. 5, pages 27-8 to 282 and 379 to 382). If for some reason the material is provided with less moisture then prior to the treatment it can be conditioned for a short time, for example, by treatment with steam.
• conditionally moist fabric is immersed into the bath, pressed in the usual manner to bath reception of to 130%, then dried at 80 to C. and finally condensed for a few minutes at to about C.
• the fabric thus treated has an exceptionally good crease resistance and water repellency determined according to the spray test (AATCC 22- 1952) is also good.
• baths of the present invention do not have an emulsifier they provide a much greater possibility of combination with other textile auxiliary agents. It should be particularly stressed that for cotton and cotton mixed fabrics the process of the present invention in addition to an exceptionally good crease resistance also produces a good hydrophobic action.
• a treating bath was prepared from gr. dimethoxy-dimethylolethyleneurea, 15 gr. methylhydrogenpolysiloxane (viscosity at 20 C. 30 cp.), 100- ml. dimethylacetamide and 6 gr. technical dibutyltinmaleate.
• the baths were diluted to 1 l. with the following solvents:
• Warp Weft The spray test according to AATCC produced for all samples the value 100.
• EXAMPLE 3 28 gr. of an hereinafter described aminoplastresin are stirred with 15 gr. ethylhydrogenpolysiloxane (viscosity at 20 C. about 38 cp.), 100 ml. dimethylformamide and 6 8 gr. technical dibutyltindiacetate (acid number 170) and filled with tetrachlororethylene to 1 l.
• the resins were:
• EXAMPLE 5 To the bath produced as described in Example 4 were added 0.2% (based on weight of fabric) of an optical brightener having the formula and cotton poplin was treated therewith. The treatment shows a clear brightening without any diminution of mechanical-technical examined values.
• hydrophilizing agent din-octyl-sodium-sulfosuccinate
• EXAMPLE 8 A cotton-polyamide mixed fabric 80:20 (qm. weight about 112 gr.) was treated at 80% relative air moisture with a bath containing 30 gr./l. ethoxydimethyloluron, 12 gr. methylhydrogenpolysiloxane (see Example 1 for details), 3 gr. dimethylpolysiloxane (viscosity 750 cp.), 150 ml. ethanol and 8 gr. technical dioctyltindilaurate per 1 l. (solvent tetrachlorethylene). The fabric was heated for 10 minutes to 50 C., then cooled to 20 C., impregnated, pressed to a bath reception of 110% and fixed in the usual manner by drying and condensing. The fabric thus treated has an excellent crease resistance (measured according to DIN 53890) and a good water repellent effect (measured according to AATCC 22-1952).
• a process for finishing at least partly cellulose containing textiles comprising preparing and activating a bath containing (a) 5 gr./l. to 60 gr./l. of an organic soluble artificial resin selected from the group consisting of methylolated ureas, methylolated carbamate, methylolated melamine, acetals and hemi-acetals of diethyleneglycol, and their etherified derivatives, etherified with alkyl alcohols with 1 to 4 C-atoms,
• a polar solvent selected from the group consisting of alkyl alcohols containing 1 to 3 C-atoms, dimethyltormamide, dimethylacetamide and their mixtures and (d) at least 1.5 gr./l. of dialkyltinacylate, the alkyl groups containing 3 to 12 C-atoms and the acyl groups containing 2 to 18 C-atoms, the substances (a) to (d) being dissolved in a non polar water-insoluble organic solvent, the activating being effected before using the bath by remaining it at room temperature to C.
• the remaining time is inversely proportional to the temperature, impregnating the textile having at least a humidity content corresponding to the humidity obtained by storing the textile at a relative humidity of at least 30% till equilibrium is reached, in said bath, then removing excessive bath from said textile, drying at C. to C. and condensing it at C. to about C. v.
• organic soluble artificial resins are selected from the group consisting of methylolated ureas, methylolated carbamates, and methylolated melamine, etherified with alkylalcohols containing 1 to 4 C-atoms;
• organic soluble artificial resins are selected from the group consisting of methylolated dihydroxyethylene urea, methylolated uron, and methylolated melamine, etherified with alkyl alcohols with 1 to 4 C-atoms.
• alkylpolysiloxanes containing hydrogen atoms bound to silicon are selected from the group consisting of hydrogenmethylpolysiloxanes and hydrogenethylpolysiloxanes.
• dialkyltinacylate is selected from the group consisting of dibutyltindilaurate, dibutyltindiacetate and dibutyltinmaleate.

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• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

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Family Applications (1)

Country Status (7)

Cited By (2)

Families Citing this family (1)

• 1972
  • 1972-05-31 CH CH805672D patent/CH805672A4/xx unknown
  • 1972-05-31 CH CH805672A patent/CH556428A/xx unknown
  • 1972-06-01 US US00258772A patent/US3829288A/en not_active Expired - Lifetime
  • 1972-06-02 NL NL7207519A patent/NL7207519A/xx unknown
  • 1972-06-02 FR FR7219979A patent/FR2140214B1/fr not_active Expired
  • 1972-06-02 BE BE784323A patent/BE784323A/fr unknown
  • 1972-06-03 IT IT50671/72A patent/IT958197B/it active
  • 1972-06-05 GB GB2621572A patent/GB1389741A/en not_active Expired

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