Classifications

• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
  • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
  • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
  • D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
  • D04H1/64—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions
  • D04H1/645—Impregnation followed by a solidification process
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L29/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical; Compositions of hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Compositions of derivatives of such polymers
  • C08L29/02—Homopolymers or copolymers of unsaturated alcohols
  • C08L29/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
  • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
  • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
  • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
  • D04H1/4282—Addition polymers
  • D04H1/4291—Olefin series
• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
  • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
  • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
  • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
  • D04H1/4282—Addition polymers
  • D04H1/43—Acrylonitrile series
• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
  • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
  • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
  • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
  • D04H1/4326—Condensation or reaction polymers
  • D04H1/4334—Polyamides
• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
  • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
  • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
  • D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
  • D04H1/587—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives characterised by the bonding agents used
• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
  • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
  • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
  • D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
  • D04H1/64—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions
  • D04H1/645—Impregnation followed by a solidification process
  • D04H1/65—Impregnation followed by a solidification process using mixed or composite fibres
• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
  • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
  • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
  • D04H1/74—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being orientated, e.g. in parallel (anisotropic fleeces)
• • 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
  • D06L4/657—Optical bleaching or brightening combined with other treatments, e.g. finishing, bleaching, softening, dyeing or pigment printing
• • 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
  • D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
  • D06M15/327—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated alcohols or esters thereof
  • D06M15/333—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated alcohols or esters thereof of vinyl acetate; Polyvinylalcohol
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
  • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
  • D06P1/38—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using reactive dyes
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
  • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
  • D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
  • D06P1/52—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing synthetic macromolecular substances
  • D06P1/5207—Macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
  • D06P1/5214—Polymers of unsaturated compounds containing no COOH groups or functional derivatives thereof
  • D06P1/5228—Polyalkenyl alcohols, e.g. PVA
• • 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
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
  • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
  • Y10T442/2582—Coating or impregnation contains an optical bleach or brightener or functions as an optical bleach or brightener [e.g., it masks fabric yellowing, etc.]
• • 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
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
  • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
  • Y10T442/2738—Coating or impregnation intended to function as an adhesive to solid surfaces subsequently associated therewith

Definitions

• This invention relates to a process for the production of nonwoven fabrics containing binders suitable to be dyed by reactive dyes including optical brighteners which comprises impregnation of the nonwoven by means of a binder preparation containing in addition to the binder (a) a polyvinyl alcohol,
• This invention relates to a process for the production of nonwoven fabrics containing binders suitable to be dyed by reactive dyes including optical brighteners which comprises impregnation of the nonwoven by means of a binder preparation containing in addition to the binder (a) a polyvinyl alcohol,
• Binders obtained by emulsion polymerization e.g. in the presence of an emulsifier, are preferred, unless selfemulsifying polymers are selected.
• binders depends on the properties which are to be imparted to the final nonwoven article, such as stiffness, flexibility, elasticity, tensile strength and heat stability.
• binders of any desired type if preferred in the form of latices, can be used, for example polymers or copolyrners deriving from acrylic acid, acrylic acid derivatives (e.g. acrylic esters and/or acrylonitrile); butadiene; styrene; vinyl alcohol derivatives (e.g. vinyl acetate), e.g.
• Component (a) may be pure polyvinylalcohol or partly esterified by acetate groups (saponification degree between 5 and 100 preferably between and '90; the molecular weight ranging between 10,000 and 50,000 preferably between 15,000 and 20,000).
• Component (a) is employed preferably in the form of an aqueous solution.
• Component (b) may be, for example, formaldehyde, or acetaldehyde or higher aldehydes.
• suitable compounds yielding formaldehyde are paraformaldehyde, trioxan and/or hexamethylene tetramine.
• dialdehydes such as glyoxal and glutaraldehyde may be successfully used.
• cyclic dimethylolurea derivatives may be used for example dimethylol ethyleneor dimethylolpropyleneurea, dihydroxyethyleneor dihydroxypropylene-dimethylol urea, methylol-melamine derivatives, compounds of formula o I! o where R represents lower alkyl or oxalkyl having e.g. 1 to 4 carbon atoms, or mixtures of the above mentioned compounds.
• metal or ammonium salts of a strong mineral acid having a pH value below 7 in aqueous solution are used.
• the magnesium or zinc salts of a strong mineral acid such as hydrochloric or nitric acid are preferred; the first choice is magnesium chloride, the second zinc nitrate.
• Any desired reactive dyes bearing at least one fibre-reactive radical can be employed as for instance dyes containing at least one halogenotriazine-, halogenoquinoxaline, halogenophthalazine ,S-oxyethylsulfonamidesulfonic ester or halogenopyridimidine radical.
• the process of this invention is especially noteworthy in that it is applicable with nonwovens of polyvinylchloride, polyester, polypropylene, polyacrylonitrile, and glass fibres since said fibres are not dyeable at all with reactive dyes.
• the nonwoven fabric is first impregnated under slightly acid to alkaline conditions, with the binder preparations containing the compounds and
• the compounds (a) and (b) are present in the impregnation liquor preferably in the ratio of 4:1 to 1:1 and more preferably 2:1.
• the liquor is preferably made alkaline with volatile alkali, for instance ammonia.
• the compound (c) acting as catalyst is present preferably in amounts of l-2% on the weight of the impregnating liquor.
• a wetting agent can be optionally added to the impregnating liquor in order to improve the wettability of the non-woven.
• the impregnating liquor can be applied by any suitable technique such as spraying, screen or foam impregnation, or by padding methods. It is best applied at low-temperatures, e.g. 5 C. to 50 C., the optimum range being 34 C.
• the impregnated nonwoven is dried by heating, e.g. at 70-120 C. which eliminates the volatile alkali until a slightly acid pH value is reached.
• the nonwoven fabric is then heat treated to condense the binder.
• the temperature range for this treatment is 130-200 C., optimally 150 C. and the time which is in inverse proportion to the temperature, is about 600 to 30 seconds (approximately 300 seconds at 150 C.).
• the temperature range is also conditioned by the nature of the fibre compositions.
• the bonded nonwoven can then be dyed, printed and/or optically brightened by one of the appropriate methods.
• an exhaust method can be employed on a padding technique such as the pad-steam, pad-batch, padroll or pad-thermosol processes.
• the nonwovens produced by the present process are also highly suitable for printing processes.
• Another suitable technique is to apply reactive dye components or metallizable dyes and to aftertreat the nonwoven to form the final or metallized dye on the fibre.
• the dyeings (the term dyeing comprising both dyeing and optical brightening) and prints thus produced are notable for very good light fastness, good rubbing fastness and very good fastness to wet treatments such as washing, water and perspiration.
• a binder preparation obtained by copolymerization of 36 parts of acrylic acid ethylester with 4 parts of acrylonitrile in the presence of 3 parts of the reaction product of 1 mole nonylphenyl with 12 moles ethylene oxide, 0.5 part of potassium persulphate and 0.2 part of sodium bisulphite in 56.3 parts of water;
• the liquor has a pH of 8.0 to 8.5.
• said liquor is filtered through a sieve of fine mesh size prior to application.
• a nonwoven spunbounded polyester is impregnated at 25-30 with said liquor until increase of 180% over its dry weight.
• the impregnated nonwoven is then dried at 110, and subsequently heated to 150 for 5 min. on which condensation takes plate.
• the treated nonwoven is dried at and thermofixed for 5 minutes at It is then rinsed first with cold and then with warm water (70%); rinsed at 80 with 5000 parts of an aqueous solution of 0.1% of a partially carboxymethylated alkylpolyglycolether and 0.25% sodium tripolyphosphate, rinsed again with water at 70 and dried.
• a nonwoven having a yellow shade is obtained which has very good light and wet rubbing fastness properties (wash ing at 60 and the severe water fastness test), together with good fastness to dry rubbing.
• the print After drying, the print is thermofixed for 5 minutes at The nonwoven is then rinsed cold with overflow and washed in two consecutive baths, each consisting of an aqueous solution of 0.1% of a partially carboxymethylated alkylpolyglycol ether and 0.25 sodium tripolyphosphate, at 80 and liquor ratio 50:1, the first time for 1 minute and the second time for 5 minutes. Finally it is rinsed at 70 and dried.
• a yellow print is obtained on the nonwoven by this procedure which has very good light and wet rubbing fastness properties (washing at 60 and the severe water test), with good dry rubbing fastness.
• Table 1 gives details of further examples of dyeings and prints obtainable by the procedures of Examples 1(b) and (c) respectively. They are distinguished by the shade of the dyeing or print on a nonwoven produced in accordance with Example 1(a).
• amino-naphthalene-3,6,5-trisulphonic acid 1-amino4-(3-trichloropyrimidylaminophenylamino)-anthraquinone-2,4',6- Reddish blue.
• EXAMPLE 20 (a) A nonwoven of polypropylene fibre is impregnated as described in Example 1 with a liquor of the following composition:
• Acronal 500D an acrylic butylester-vinyl acetate copolymer with a dry content of approximately 45%
• the roll is stored for 24 hours at room temperature, preferably with rotation. After treatment is carried out as in Example 1.
• a yellow dyeing is obtained on the nonwoven which has very good fastness to light, wet rubbing fastness (Washing at and the: severe Water fastness test) and dry rubbing fastness.
• the nonwoven is rolled up and the roll wrapped in (a)
• a carded nonwoven of regenerated cellulosic and polyamide fibres (:25) is impregnated in accordance with the procedure of Example 1 with a liquor of the following composition:
• Impregnation is followed by drying and condensation.
• the nonwoven After padding, the nonwoven is heated up to 70 and rolled up. For fixation of the dye it is stored in the enclosed chamber of the pad-roll range for 3 hours at a wet bulb temperature of 70 and a dry bulb temperature of 75. Subsequently it is aftertreated as described in Example 1. A blue dyeing is obtained on the nonwoven which has very good fastness to light, wet rubbing fastness (washing at 60 and the severe water test) and dry rubbing fastness.
• any other of the dyes listed in Table 1 can be used with the same good results.
• EXAMPLE 30 (a) A carded nonwoven of polyamide and polyacrylonitrile fibres (80:20) is impregnated as disclosed in Example 1 with the following liquor:
• synthorner 3500 an anionically stabilized copolymer containing carboxylic groups based on butadiene-styrene; approximate dry content 45
• 2.5 parts of a 1:1 mixture of glyoxal and propylene dimethylolurea 1.8 parts of ammonia nitrate 0.2 part of dioctyl sulphosuccinate and 9.5 parts of water.
• Impregnation is followed by drying and condensation.
• the padded nonwoven is dried in a hot flue and the dyeing fixed by treatment for 15 minutes in saturated steam. It is aftertreated as in Example 1. The procedure results in a blue dyeing showing good fastness to light, wet rubbing fastness (washing at 60 and the severe water test) and dry rubbing fastness.
• Glaubers salt 20 parts of sodium hydroxide 5 parts of sodium m-nitrobenzenesulphonate and 725 parts of water.
• the moist nonwoven is steamed for 1 minute at with saturated steam and aftertreated as in Example 1.
• a blue dyeing is obtained on the nonwoven which has good fastness to light, wet rubbing fastness (washing at 60 and the severe water test) and dry rubbing fastness.
• Example 31 A nonwoven produced as described in Example 25 is entered into an exhaust dyebath at room temperature and at a liquor to goods ratio of 10:1. The bath is raised in 30 minutes to the temperature given in Table 3 for the dye bath. During the heating-up period, Glaubers salt is added in three portions after 10, 20 and 30 minutes. When the respective dyeing temperature is reached, sodium carbonate is added and dyeing continued for 60 minutes for fixation. The nonwoven is rinsed and soaped as given in Example 1.
• composition of the dyebath is as follows:
• a nonwoven fabric is impregnated with a binder preparation
• the improvement, whereby said nonwoven fabric is rendered suitable for dyeing and optical brightening with fiber reactive dyestuffs and optical brighteners which comprises incorporating in the binder preparation, in addition to the binder (a) a polyvinyl alcohol (b) a member of the group consisting of reactive cyclic methylol compounds, aldehydes, compound yielding formaldehyde and mixtures thereof, and
• the weight ratio of said component (a) to said component (b) being in the range 4:1 to 1:1, and subsequently drying said binder preparation and condensing under acid conditions.
• binder preparation contains a volatile alkali when applied to the fabric and the alkali is volatilized by heat to render the binder preparation acidic for condensation.
• a process according to claim 2 which includes the step of dyeing or optically brightening the nonwoven fabric with a reactive dye or a reactive optical brightener following condensation of the binder preparation.

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Dispersion Chemistry (AREA)
• General Chemical & Material Sciences (AREA)
• Health & Medical Sciences (AREA)
• Medicinal Chemistry (AREA)
• Polymers & Plastics (AREA)
• Organic Chemistry (AREA)
• Coloring (AREA)
• Compositions Of Macromolecular Compounds (AREA)
• Nonwoven Fabrics (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=4264972

Family Applications (1)

Country Status (9)

Cited By (12)

• 1970
  • 1970-03-16 CH CH385870D patent/CH385870A4/xx unknown
  • 1970-03-16 CH CH385870A patent/CH520805A/de not_active IP Right Cessation
• 1971
  • 1971-03-09 US US00122556A patent/US3759736A/en not_active Expired - Lifetime
  • 1971-03-11 DE DE19712111668 patent/DE2111668B2/de active Pending
  • 1971-03-12 FR FR7108687A patent/FR2083305B1/fr not_active Expired
  • 1971-03-15 NL NL7103399A patent/NL7103399A/xx unknown
  • 1971-03-15 ES ES389246A patent/ES389246A1/es not_active Expired
  • 1971-03-15 JP JP46014359A patent/JPS5030192B1/ja active Pending
  • 1971-04-19 GB GB24242/71A patent/GB1301058A/en not_active Expired
• 1976
  • 1976-04-14 HK HK225/76*UA patent/HK22576A/xx unknown

Also Published As

Similar Documents