EP0129322B1 - Method of treating wool - Google Patents

Method of treating wool Download PDF

Info

Publication number
EP0129322B1
EP0129322B1 EP84303233A EP84303233A EP0129322B1 EP 0129322 B1 EP0129322 B1 EP 0129322B1 EP 84303233 A EP84303233 A EP 84303233A EP 84303233 A EP84303233 A EP 84303233A EP 0129322 B1 EP0129322 B1 EP 0129322B1
Authority
EP
European Patent Office
Prior art keywords
wool
polymer
weight
amino
dry
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP84303233A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0129322A3 (en
EP0129322A2 (en
Inventor
Ronald James Haslam
Kenneth Michael Huddlestone
Herbert Martin Longbottom
Anthony Szpala
Petrus Theodorus Cornelia De Waal
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Precision Processes Textiles Ltd
Original Assignee
Precision Processes Textiles Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Precision Processes Textiles Ltd filed Critical Precision Processes Textiles Ltd
Priority to AT84303233T priority Critical patent/ATE57546T1/de
Publication of EP0129322A2 publication Critical patent/EP0129322A2/en
Publication of EP0129322A3 publication Critical patent/EP0129322A3/en
Application granted granted Critical
Publication of EP0129322B1 publication Critical patent/EP0129322B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • 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
    • 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
    • D06M15/263—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acids; Salts or esters thereof
    • D06M15/267—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of unsaturated carboxylic acids; Salts or esters thereof of unsaturated carboxylic esters having amino or quaternary ammonium groups

Definitions

  • This invention relates to improvements in the treatment of wool to impart shrink resistance thereto and is more especially concerned with the treatment of materials consisting of or containing wool which are available in continuous lengths, or which can readily be joined together into a continuous form to enable the same to be subjected to substantially uniform treatment.
  • Woollen materials which are available in continuous lengths include yarns, tops and woven and knitted fabrics consisting of or containing wool. Such lengths may also be formed by sewing together knitted garments such as socks: these are then separated after completion of the treatment.
  • the invention can also be applied to loose wool.
  • means are required for transporting loose wool in a continuous fashion.
  • Such means are known in the field and include conveyor belts and rotating rake systems.
  • Amino-acrylic polymers are well known and are described, for example, in British Patent Nos. 1318781 and 1393273. The use of such polymers for the shrink-proofing of wool has been suggested, for example in U.S. Patent Nos. 3678098 and 3842054, although not it is believed in a two-stage continuous process.
  • FR-A-2156036 describes a shrink-resist process which comprises treating wool fibres with an oxidizing agent and then with an aqueous composition comprising a minor proportion of a water-soluble cationic resin and a major proportion of a dispersed acrylic copolymer capable of reaction with the cationic resin.
  • the present invention results from our discovery that certain polymers containing quaternized amino groups confer surprisingly good shrink-resistance and other advantages when used in a two-stage treatment of the conventional kind.
  • Preferred forms of the invention overcome each of the three disadvantages noted above.
  • a major advantage of the present process is that it requires significantly less energy than other conventional shrink-proofing processes, in order to achieve a comparable degree of drying of the wool. Indeed, it is estimated that there is at least a 20% saving in energy over such processes.
  • wool treated by the present process requires less heat treatment than wool treated by known processes.
  • the wool is preferably dried to a moisture level of 12-15% (by weight), whereas conventional processes involve drying to a lower moisture content. A low moisture level may lead to handling difficulties during subsequent processing of the wool.
  • the temperature of the drier can be reduced, thus saving power.
  • the drying time can be reduced, thus increasing throughput.
  • chlorinating pretreatment is a conventional procedure and a number of suitable treatments are already well known.
  • Chlorinating agents such as hypochlorite or sodium dichloroisocyanurate may be employed, (optionally together with potassium permanganate or permonosulphate) at levels of 0.25-2.0% active chlorine, by weight on the weight of the dry wool (O.W.W.), most preferably 0.5-1.2%.
  • active chlorine by weight on the weight of the dry wool (O.W.W.), most preferably 0.5-1.2%.
  • the pretreatment wii by itself, produce a small degree of shrink-resistance in the wool.
  • the wool is subjected to antichlorination treatment with sulphite and rinsed and is then ready for the polymer application stage.
  • the polymer used contains quaternized amino groups in sufficient proportion to cause the polymer to exhaust from aqueous solution on to the (anionic) wool fibres.
  • the polymer is derived from a monomer or polymer containing tertiary amino groups, some or preferably all of these are quaternized, sufficient to confer the desired cationic character on the polymer.
  • the polymers may be homopolymers or copolymers. Two classes of such polymers are described, of which B) is preferred:-A) Polymers derived from at least one acrylic monomer and one or more monomers at least one of which is a heterocyclic compound carrying an ethylenically unsaturated group.
  • Heterocyclic compounds with tertiary nitrogen atoms which can be quaternized include pyridine and imidazole.
  • Monomers from which the polymers can be derived include 2- and 4-vinyl pyridines and 2- and 4-vinyl imidazoles.
  • Tertiary nitrogen atoms may be quaternized before or after polymerisation of the monomers. Quaternisation techniques are well known in the art and will not be described here. Quaternizing agents may be monofunctional or polyfunctional, and it may be useful to use a polyfunctional agent either alone or in admixture with a monofunctional one, in order to achieve some degree of cross-linking of the polymers after application to the wool fibres.
  • Suitable quaternizing agents include:
  • Monomers containing tertiary nitrogen atoms may be homopolymerized, or alternatively may be copolymerized with one or more other monomers such as:-
  • this other monomer may be chosen to impart desired properties to the copolymer.
  • acrylamide may give rise to a copolymer having greater water-solubility than does methyl methacrylate.
  • the molar proportion of the amino-group-containing monomer in the polymer (100% in homopolymers, less than 100% in copolymers) is chosen with various factors in mind. The proportion must be sufficiently large for the polymer to be soluble in water at the required concentration and to exhaust on to wool fibres. at a satisfactory rate. If the proportion is too high, then the shrink-resist properties of the polymer on the wool may not be realised immediately or may be affected by subsequent dyeing or washing treatments, or dye uptake and fastness may be adversely affected.
  • the polymers may be prepared by solution polymerisation in a water-miscible organic solvent.
  • the proportion of amino-group-containing monomer(s) needs to be chosen bearing in mind the need to perform the polymerisation and subsequent quaternization reactions in solution.
  • a chain transfer agent may be included. Isopropanol is a suitable solvent and has the advantage of acting also as a chain transfer agent.
  • Polymerization conditions are well known in the art and not critical. Preferred conditions result in a concentrated solution of polymer in 50:50 isopropanol:water. This is diluted with water to 5% solids for eventual use as make-up for the treatment bath. In continuous operation, the polymer concentration in the bath reaches an equilibrium value generally in the range 0.1 % to 1% by weight.
  • polymers are water-soluble under acid conditions, and are preferably stored and transported at a pH of from 3 to 6. Under alkaline conditions, cross-linking may occur, particularly when quaternization has been effected using a difunctional agent such as epichlorhydrin.
  • a feature of the present process is that very low levels of polymer may be used and still produce acceptable shrink-resist properties.
  • the precise level of polymer employed will depend on the concentration of chlorine used in the pretreatment, i.e. use of a high level of chlorine will generally mean that a lower level of polymer is required and vice-versa.
  • the polymer should be applied to the wool at a level of 0.4-2.0% (o.w.w.), preferably 0.5-0.8%.
  • the aqueous polymer solution should be acid stabilised (preferably pH 3.5-4.0) and diluted to approximately 5% solids before being fed to the application bowl.
  • the application bowl itself should be previously set at an alkaline pH (in the range pH 7-10 preferably pH 8.5-9.5) and maintained at this value by the addition of an agent such as sodium carbonate.
  • a preferred solution to the problem comprises the use of a water-soluble cationic material which may be either monomeric or polymeric. This material should react preferentially with the proteinaceous material and keep it in solution or suspension. It should be used in an amount small enough as not to substantially affect the exhaustion of the polymer on to the wool fibres; an amount of from 2% to 20% by weight on the weight of the polymer is suitable.
  • the material may be added to the polymer concentrate followed by dilution of the mixture to the desired concentration for addition to the treatment bath.
  • Suitable materials are available commercially; their chemical constitutions are often not published in detail, but it is believed that they generally contain tertiary or quaternary nitrogen atoms:-
  • the wool is dried.
  • the drying stage requires significantly less energy than that required by other comparable shrink-proofing processes, in order to achieve the same degree of drying of the wool. Indeed, care must be taken to avoid over drying the wool since this may cause handling problems due to the development of static electricity.
  • Example 1 demonstrates the effectiveness of various polymers according to the present invention in imparting shrink-resistance to wool.
  • Examples 2 and 3 are comparative Examples serving to demonstrate the advantages of the present process over various other commercially available shrink-proofing processes.
  • Example 4 relates to a number of industrial trials which have been carried out to illustrate the improved drying properties exhibited by the process of the invention.
  • Example 5 is a comparative Example illustrating the effectiveness of the additive in reducing turbidity and precipitation in the polymer bowl.
  • Wool tops were oxidatively treated by the chlorination process ii) of Example 1 and spun and knitted into fabric.
  • Polymer was then applied to the fabric by exhaustion from a bath at pH 9.0.
  • Wool tops were treated according to the process of the invention on a commercial backwasher range and dried by passing through a 3 drum dryer operating deliberately at a high temperature of 90°C. A quantity of tops were removed before entering the dryer and allowed to dry at room temperature. Samples were then immediately spun to 2/24's worsted count, knitted and tested according to the TM 185 test.
  • Example 1 ii) using polymer b The treatment substantially as described in Example 1 ii) using polymer b), has been applied in a series of trials on three industrial plants which normally operate the same oxidative process as that being used for the pretreatment in these experiments. In each case the trials were run for approximately 1 hour with the machine speed and the initial dryer temperature being the same as for normal production.
  • This plant has a 3 drum dryer, normal temperature being 100,90 and 85°C. Using these conditions the emerging wool was excessively over-dried.
  • Dryer temperature were reduced to 75-80°C on all drums, the wool being well dried throughout.
  • Normal dryer temperature is 60-70°C.
  • the wool was over-dry and gave problems on leaving the dryer due to electrostatic charge. Rapid cooling of the dryer by opening the side doors improved the running, the wool still being dry.
  • Dryer temperature was at 50-60°C. Problems were still encountered at the beginning of the run. Steam was turned off entirely and the run was completed with the wool satisfactorily dry.
  • the wool was dried to a moisture content below 18% using at least 20% less energy than had been required to dry to the same moisture content the wool routinely shrink-resist treated in that plant.
  • the pre-treated sliver then passed through a four bowl backwasher where they were successively given an antichlorination treatment, a water rinse, application of a polymer, and finally, application of a cationic softener.
  • the sulphite bowl was maintained at a concentration of 1% and pH 8.5-9.0 by appropriate addition of sulphite solution and alkali.
  • the polymer bowl was fed with a 5% solution of polymer type (b) at a rate to give 0.75% polymer solids on weight of wool passing through the bowl.
  • the pH of the bath was maintained at pH 8.5-9.0 by addition of alkali.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Fertilizers (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Laminated Bodies (AREA)
EP84303233A 1983-05-13 1984-05-11 Method of treating wool Expired - Lifetime EP0129322B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84303233T ATE57546T1 (de) 1983-05-13 1984-05-11 Verfahren zum behandeln von wolle.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8313262 1983-05-13
GB838313262A GB8313262D0 (en) 1983-05-13 1983-05-13 Method of treating wool

Publications (3)

Publication Number Publication Date
EP0129322A2 EP0129322A2 (en) 1984-12-27
EP0129322A3 EP0129322A3 (en) 1987-08-05
EP0129322B1 true EP0129322B1 (en) 1990-10-17

Family

ID=10542701

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84303233A Expired - Lifetime EP0129322B1 (en) 1983-05-13 1984-05-11 Method of treating wool

Country Status (8)

Country Link
EP (1) EP0129322B1 (enrdf_load_stackoverflow)
JP (1) JPS59228082A (enrdf_load_stackoverflow)
AT (1) ATE57546T1 (enrdf_load_stackoverflow)
BE (1) BE899657A (enrdf_load_stackoverflow)
DE (1) DE3483407D1 (enrdf_load_stackoverflow)
GB (1) GB8313262D0 (enrdf_load_stackoverflow)
IT (1) IT1173633B (enrdf_load_stackoverflow)
ZA (1) ZA843625B (enrdf_load_stackoverflow)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3544958A1 (de) * 1985-12-19 1987-06-25 Hansa Textilchemie Gmbh Verfahren zum ausruesten von maschenware
GB8725921D0 (en) * 1987-11-05 1987-12-09 Precision Proc Textiles Ltd Treatment of wool
FR2708943B1 (fr) * 1993-08-09 1995-09-29 Protex Manuf Prod Chimiq Procédé d'amélioration de la stabilité des fibres de laine.
FR2827314B1 (fr) * 2001-07-13 2004-07-23 Protex Additif exempt de formaldehyde pour une composition de traitement destinee a ameliorer l'infroissabilite et/ou la stabilite dimensionnelle d'un support textile
DE102005062164A1 (de) * 2005-12-22 2007-06-28 Lanxess Deutschland Gmbh Verfahren zur Antifilzausrüstung von Wolle

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3678098A (en) * 1969-04-04 1972-07-18 Rohm & Haas Unsaturated quaternary monomers and polymers
US3842054A (en) * 1971-04-05 1974-10-15 Hercules Inc Vinyl-type addition polymers containing a plurality of tertiary nitrogens quaternized with an epihalohydrin
BE789701A (fr) * 1971-10-06 1973-02-01 Iws Nominee Co Ltd Procede en vue de rendre la laine irretrecissable

Also Published As

Publication number Publication date
BE899657A (fr) 1984-08-31
ATE57546T1 (de) 1990-11-15
DE3483407D1 (de) 1990-11-22
EP0129322A3 (en) 1987-08-05
EP0129322A2 (en) 1984-12-27
IT8420894A0 (it) 1984-05-11
IT8420894A1 (it) 1985-11-11
JPS633077B2 (enrdf_load_stackoverflow) 1988-01-21
JPS59228082A (ja) 1984-12-21
IT1173633B (it) 1987-06-24
ZA843625B (en) 1985-04-24
GB8313262D0 (en) 1983-06-22

Similar Documents

Publication Publication Date Title
US4520143A (en) Compositions for the treatment of textile materials
US3995998A (en) Method of polymerizing and fixing carboxyl-containing vinyl monomers in high conversion on fibrous substrates
US3491169A (en) Oil and water repellent
US5951719A (en) Process of after-treating dyed cellulose fabrics with a glyoxalated acrylamide polymer
US5082697A (en) Polymer salt complex for fiber or fabric treatment
EP0315477A2 (en) Method for the treatment of wool
US3220869A (en) Process for improving textile fabrics
US3125405A (en) Method of crease-proofing cellulosic
JPH0364634B2 (enrdf_load_stackoverflow)
EP0129322B1 (en) Method of treating wool
US3446761A (en) Stain-resistant article,and composition for preparing same
US4753999A (en) Copolymer, process for its preparation, and its use
WO2004035908A2 (en) Method of treating fibers, carpet yarns and carpets to enhance repellency
US4810254A (en) Wet-fastness properties of sulphur dyestuffs dyeings on cellulose treated with poly-di-allyl-ammonium salt
US3291560A (en) Method of forming polymers on fibrous substrates through high velocity impingement with solutions containing unsaturated monomers and chemical catalysts
US3100674A (en) Process for shrink-proofing proteinaceous textile materials and the product therefrom
US5976196A (en) Process for preparing a dyed textile fabric wherein the dyed fabric is coated with a mixture of resins
US3656885A (en) High strength wrinkle resistant cotton fabrics produced by a process involving both monosubstitution and crosslinking of the cotton
EP0057792A2 (en) A process for imparting durable press properties to cellulose or cellulose-containing textile materials and the materials having such properties
US4077771A (en) Process for treating fibrous material
JPS6163709A (ja) 耐洗浄性の抗菌的に活性な繊維と糸およびそれらの製造
US3811835A (en) Treatment of wool
US3770494A (en) Modified acrylonitrile polymer fibers
JP3191476B2 (ja) 繊維材料の処理方法
US2846423A (en) Process for improving polymers of acrylonitrile

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT CH DE FR GB LI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT CH DE FR GB LI

17P Request for examination filed

Effective date: 19880122

17Q First examination report despatched

Effective date: 19881110

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT CH DE FR GB LI

REF Corresponds to:

Ref document number: 57546

Country of ref document: AT

Date of ref document: 19901115

Kind code of ref document: T

REF Corresponds to:

Ref document number: 3483407

Country of ref document: DE

Date of ref document: 19901122

ET Fr: translation filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19910523

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19910531

Year of fee payment: 8

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19920303

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19920507

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Effective date: 19920511

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19920518

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19920531

Ref country code: CH

Effective date: 19920531

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19930511

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19930511

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19940131

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST