WO2018067092A2 - Fibre dyeing method - Google Patents

Fibre dyeing method Download PDF

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Publication number
WO2018067092A2
WO2018067092A2 PCT/TR2017/050369 TR2017050369W WO2018067092A2 WO 2018067092 A2 WO2018067092 A2 WO 2018067092A2 TR 2017050369 W TR2017050369 W TR 2017050369W WO 2018067092 A2 WO2018067092 A2 WO 2018067092A2
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WO
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Prior art keywords
fibre
acrylic
dyes
dyeing method
chemical
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Application number
PCT/TR2017/050369
Other languages
French (fr)
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WO2018067092A3 (en
Inventor
İlhan CANPOLAT
Yoshikatsu Mizukami
Original Assignee
Aksa Akri̇li̇k Ki̇mya Sanayi̇i̇ Anoni̇m Şi̇rketi̇
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Publication of WO2018067092A2 publication Critical patent/WO2018067092A2/en
Publication of WO2018067092A3 publication Critical patent/WO2018067092A3/en

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Classifications

    • 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
    • D06P1/5264—Macromolecular compounds obtained otherwise than by reactions involving only unsaturated carbon-to-carbon bonds
    • D06P1/5278—Polyamides; Polyimides; Polylactames; Polyalkyleneimines
    • 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
    • D06P1/5242—Polymers of unsaturated N-containing compounds
    • 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
    • D06P1/60—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 polyethers
    • D06P1/607—Nitrogen-containing polyethers or their quaternary derivatives
    • D06P1/6076—Nitrogen-containing polyethers or their quaternary derivatives addition products of amines and alkylene oxides or oxiranes
    • 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
    • D06P1/64—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 low-molecular-weight organic compounds without sulfate or sulfonate groups
    • D06P1/642—Compounds containing nitrogen
    • D06P1/645—Aliphatic, araliphatic or cycloaliphatic compounds containing amino groups
    • 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
    • D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
    • D06P3/70—Material containing nitrile groups
    • 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
    • D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
    • D06P3/82—Textiles which contain different kinds of fibres
    • D06P3/8204—Textiles which contain different kinds of fibres fibres of different chemical nature
    • D06P3/8271—Textiles which contain different kinds of fibres fibres of different chemical nature mixtures of fibres containing amide and nitrile groups
    • 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
    • D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
    • D06P5/002—Locally enhancing dye affinity of a textile material by chemical means

Definitions

  • the invention relates to a method which enables acrylic and modacrylic fibers to be dyed with both cationic and anionic dyes.
  • the polyacrylonitrile (PAN) polymer used in the manufacturing of acrylic fibres is obtained by free radical chain polymerization of acrylonitrile monomers.
  • the tacticity and crystallization rate of the acrylic fibre produced as a homopolymer with the polymerization of 100% acrylonitrile at first is very high. For this reason, its properties such as coloration and moisture absorption are negative and the process of dyeing is very hard. It has been converted into copolymer with the addition of a second monomer to improve these properties and to bring in staining capability, and their properties have been optimized for use in textiles.
  • the structure of the initiators, catalyzers, terminator chemicals and secondary monomer (comonomer) used in the polarization process the crystal structure of the polymer chain decreases and the amorphous region increases and the polarity of the polymer becomes anionic or cationic.
  • the solubility of the polymer in some solvents and the dyeing capability increases.
  • Partially positive or partially negative charged monomers are used as comonomers in the polyacrylonitrile polymerization process.
  • Partially positively charged secondary monomers are monomers such as vinyl pyridine, diethylaminomethylacryl. They turn into polymer cationically charged state due to the initiators, catalyzers and terminators with positive charges such as NH3, NH4, used in the polymerization process together with these monomers. Thus, they can be dyed with anionic dyes.
  • partially negatively charged secondary monomers are monomers such as vinyl acetate, methyl acrylate etc. They turn into polymer anionically charged state due to the initiators, catalyzers and terminators with positive charges such as SO 4 , SO 3 used in the polymerization process together with these monomers. Thus, they can be dyed with cationic dyes.
  • polymer of acrylic fibre becomes anionic or cationic depending on its comonomer structure and the initiators, catalyzers, terminators used.
  • Fibres containing at least 85% acrylonitrile in the chemical structure are called acrylic fibres, and those containing acrylonitrile between 35% -85% by weight are called modacrylic fibres.
  • Cationic dyestuff is the most important group in dyeing of anionically charged acrylic fibres in the fibre dyeing stage.
  • Cationic dyestuffs are within the group of dyestuffs which dissociate into positively (+) charged color ions in aqueous solutions. In practice, they are suitable for acrylic and some polyester fibres. They provide adequate lighting, wet fastness and bright colors in acrylic which is the main usage area.
  • the dyeing of acrylic fibres with cationic (basic) dyestuffs is due to an ion exchange.
  • dyestuffs are chemically bonded to the anionic sub-chains (such as SO 3 -, OSO 3 -, COO-) present in the polymer. They form salt bonds with anionic groups.
  • the number of negatively charged sub-chains present in the polymer varies depending on the polymerization and the fibre manufacturing process.
  • the maximum number of dyestuff molecules that can be attached to the fiber is the number of acid groups in the fiber. The maximum dyeing depends on the negatively charged (sulphonate and sulphate etc.) groups in the fibre or bonded at the end of the polymer chains.
  • the structure of the polymer When the structure of the polymer is cationic, it can be dyed with anionic (acidic) dyestuffs.
  • anionic (acidic) dyestuffs The basic groups at the end of the polymer chain enables the fibre to be dyed forming chemical bonds with the acidic dyes.
  • the present invention makes it necessary to remove the above-mentioned problems and to make technical innovation in the relevant field.
  • the main objective of the invention is to provide a method structure which enables the acrylic fibre to be dyed with anionic or cationic dye optionally by modification performed in the acrylic fibre manufacturing process without changing the existing fibre manufacturing line.
  • Another objective of the invention is to ensure that the fibre is obtained in such a structure providing it to be dyed with both negatively charged (anionic) and positively charged (cationic) dyes.
  • Another objective of the invention is to provide fibre with positively charged end groups. Another objective of the invention is to make the fibre manufactured with the negative end group turn into a fibre with positive end group fiber by the help of the auxiliary chemical. Another objective of the invention is to make it possible to dye acrylic / modacrylic fibres using acidic dye. Another objective of the invention is to make it possible to dye new fibres with acid dyes, metal complex dyes and reactive dyes.
  • Another objective of the invention is to make the use of acrylic fibers widespread in businesses that only have acid dyeing capabilities.
  • Another objective of the invention is to reduce the manufacturing process and costs according to alternative embodiments.
  • the dyeing process is carried out with monomers having positively charged end groups.
  • the chemical comprises at least 0.05 mmol/g, preferably 0.15 mmol/g of primer amine having a molecular weight of at least 1000 in order to prevent surface deformation and preferably more than 5000 in order to be safe for health.
  • all the end groups in the new fibre obtained do not convert to the positive end group. It is known that there are still negative end groups on the polymer chain.
  • the new fiber obtained can be dyed with both anionic and cationic dyes.
  • cationically charged acrylic fibers become to be dyed with acid dyes, metal complex dyes and reactive dyes.
  • the fibre dyeing process of the present invention will hereinafter be referred to as acrylic fibre and can be used in the process of modacrylic fibre manufacturing similar to the same process steps.
  • the invention relates to a method which enables the acrylic fibers, which can be dyed with basic dyes, to be dyed with acidic dyes by modification in finishing baths optionally included in the finishing process without any change of the present acrylic fibre polymerization process.
  • the polymer chain is represented.
  • the negatively charged main structure represents the polyacrylonitrile copolymer.
  • the positively charged (two ends) structures represent diamines of 1 -20 carbons or polydiamines (polyetheramine (jeffamine), poly allylamine (poly allylamine)).
  • the acrylic fibre manufactured with the negative end groups in the polymerization process undergoes transformation as having positive end groups with the help of an auxiliary chemical added to the finishing baths.
  • the invention is used in the present system, and the positively charged end groups are obtained as a result of the modifications made in the finishing baths, which are involved in the finishing process, within the acrylic fibre manufacturing obtained by the wet spinning method of the known art.
  • fibres from coming from the spinneret during the manufacturing of the acrylic fiber to be dyed are subjected to washing step and curing in the coagulation baths.
  • the novelty of the present invention the number of finishing baths is increased to two (priorly one) and the polymer with positively charged end groups is obtained by applying chemical in the second finishing bath before finishing process.
  • the preferred chemical may be positively charged monomer (two ends) such as diamine, triamine, tetramine or may be polymer with low molecular weight.
  • the chemical that enables the acrylic fibre to have cationic end groups should be chosen as polymers with positive charged end groups and with a molecular weight of up to 30,000. While the effectiveness of polymers with high molecular weight is reduced, the health risks are increased in polymers with low molecular weight. For this reason, polymers which have between 10000 and 15000 molecular weight are the ideal polymer groups.
  • polyetheramine jeffamine
  • poly allylamine poly allylamine
  • poly diamine poly diamine
  • the chemical comprises at least 0.05 mmol/g, preferably 0.15 mmol/g of primer amine having a molecular weight of at least 1000 in order to prevent surface deformation and preferably more than 5000 in order to be safe for health.
  • the positively charged polymer which can be dyed with negatively charged acidic dyes, is obtained due to the positively charged (two ends) monomer (cationic) or polymer applied in the finishing bath.
  • the chemical concentration is between maximum 0.1 % to 30%, preferably 0.1 % to 10%.
  • the application temperature of the chemical to be fed to the acrylic fibre having negatively charged ions in the finishing bath is between 20 °C and 100 °C.
  • Negatively charged acid dyes with acrylic fibre in which cationic chemicals with two positive charges in the finish baths are applied, metal complex dyes or reactive dyes, in which metals such as copper-zinc form complex structures around the molecules, can be applied. Due to the fact that acrylic fibres with positive end groups obtained by chemical application have negative end groups at the same time, they can be dyed with basic dyes which have a positive charge optionally.
  • the wool fibre having positive end groups and the new fibre having both positive and negative end groups can be dyed with acidic and metal complex dyes as the same color at the same time in the same boiler.
  • the melange can be formed by using wool fibres having positive end groups and new fibre basic dyes having both positive and negative end groups in the same boiler.
  • the basic dye is used in the dyeing process, the wool fiber remains unpainted, while the new fibre changes color.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Coloring (AREA)

Abstract

The invention relates to a method applied by feeding monomer or polymer having positively charged end groups, which are applied on the fibre before the finishing or in the finishing bath, on the fibre, enabling the acrylic or modacrylic fibres to be dyed with negatively charged acid dyes, metal complex dyes or reactive dyes in the polymerization process without using catalyzer.

Description

FIBRE DYEING METHOD TECHNICAL FIELD
The invention relates to a method which enables acrylic and modacrylic fibers to be dyed with both cationic and anionic dyes.
PRIOR ART
The polyacrylonitrile (PAN) polymer used in the manufacturing of acrylic fibres is obtained by free radical chain polymerization of acrylonitrile monomers.
The tacticity and crystallization rate of the acrylic fibre produced as a homopolymer with the polymerization of 100% acrylonitrile at first is very high. For this reason, its properties such as coloration and moisture absorption are negative and the process of dyeing is very hard. It has been converted into copolymer with the addition of a second monomer to improve these properties and to bring in staining capability, and their properties have been optimized for use in textiles. According to the structure of the initiators, catalyzers, terminator chemicals and secondary monomer (comonomer) used in the polarization process, the crystal structure of the polymer chain decreases and the amorphous region increases and the polarity of the polymer becomes anionic or cationic. Thus, the solubility of the polymer in some solvents and the dyeing capability increases.
Partially positive or partially negative charged monomers are used as comonomers in the polyacrylonitrile polymerization process.
Partially positively charged secondary monomers are monomers such as vinyl pyridine, diethylaminomethylacryl. They turn into polymer cationically charged state due to the initiators, catalyzers and terminators with positive charges such as NH3, NH4, used in the polymerization process together with these monomers. Thus, they can be dyed with anionic dyes. On the other hand, partially negatively charged secondary monomers (comonomer) are monomers such as vinyl acetate, methyl acrylate etc. They turn into polymer anionically charged state due to the initiators, catalyzers and terminators with positive charges such as SO4, SO3 used in the polymerization process together with these monomers. Thus, they can be dyed with cationic dyes.
For this reason, polymer of acrylic fibre becomes anionic or cationic depending on its comonomer structure and the initiators, catalyzers, terminators used. Fibres containing at least 85% acrylonitrile in the chemical structure are called acrylic fibres, and those containing acrylonitrile between 35% -85% by weight are called modacrylic fibres.
Wet spinning fibre manufacturing process consists of coagulation, washing, dyeing, curing, finishing, drying, crimping stages. Cationic dyestuff is the most important group in dyeing of anionically charged acrylic fibres in the fibre dyeing stage. Cationic dyestuffs are within the group of dyestuffs which dissociate into positively (+) charged color ions in aqueous solutions. In practice, they are suitable for acrylic and some polyester fibres. They provide adequate lighting, wet fastness and bright colors in acrylic which is the main usage area. The dyeing of acrylic fibres with cationic (basic) dyestuffs is due to an ion exchange. These dyestuffs are chemically bonded to the anionic sub-chains (such as SO3-, OSO3-, COO-) present in the polymer. They form salt bonds with anionic groups. The number of negatively charged sub-chains present in the polymer varies depending on the polymerization and the fibre manufacturing process. The maximum number of dyestuff molecules that can be attached to the fiber is the number of acid groups in the fiber. The maximum dyeing depends on the negatively charged (sulphonate and sulphate etc.) groups in the fibre or bonded at the end of the polymer chains.
When the structure of the polymer is cationic, it can be dyed with anionic (acidic) dyestuffs. The basic groups at the end of the polymer chain enables the fibre to be dyed forming chemical bonds with the acidic dyes.
However, only anionic or only cationic dyestuff can be used in a fibre manufacturing process. In the present technique, two different fibre manufacturing processes and production lines are required to be able to perform dyeing using both acidic and basic dyes. In the PCT document with reference no WO201 1010590, a method for dyeing fibers with acidic dyes has been mentioned. The related invention describes the dyeing of acrylic fibres with an acidic dye specifically prescribed.
It has been explained in Chinese patent document with reference no CN100449042 (C) that fibres can be dyed with both acidic and cationic dyes. However, dyeing of the cationic acrylic fiber obtained by using the catalyzer during the polymerization with acid dye has been discussed in the relevant invention.
As a result, all the above-mentioned problems have made it necessary to innovate in the relevant field.
OBJECTIVE AND BRIEF DESCRIPTION OF THE INVENTION
The present invention makes it necessary to remove the above-mentioned problems and to make technical innovation in the relevant field.
The main objective of the invention is to provide a method structure which enables the acrylic fibre to be dyed with anionic or cationic dye optionally by modification performed in the acrylic fibre manufacturing process without changing the existing fibre manufacturing line.
Another objective of the invention is to ensure that the fibre is obtained in such a structure providing it to be dyed with both negatively charged (anionic) and positively charged (cationic) dyes.
Another objective of the invention is to provide fibre with positively charged end groups. Another objective of the invention is to make the fibre manufactured with the negative end group turn into a fibre with positive end group fiber by the help of the auxiliary chemical. Another objective of the invention is to make it possible to dye acrylic / modacrylic fibres using acidic dye. Another objective of the invention is to make it possible to dye new fibres with acid dyes, metal complex dyes and reactive dyes.
Another objective of the invention is to make the use of acrylic fibers widespread in businesses that only have acid dyeing capabilities.
Another objective of the invention is to reduce the manufacturing process and costs according to alternative embodiments.
In another preferred embodiment of the invention, the dyeing process is carried out with monomers having positively charged end groups.
In a preferred embodiment of the invention, the chemical comprises at least 0.05 mmol/g, preferably 0.15 mmol/g of primer amine having a molecular weight of at least 1000 in order to prevent surface deformation and preferably more than 5000 in order to be safe for health.
In another preferred embodiment of the invention, all the end groups in the new fibre obtained do not convert to the positive end group. It is known that there are still negative end groups on the polymer chain. Thus, the new fiber obtained can be dyed with both anionic and cationic dyes.
In another preferred embodiment of the invention, cationically charged acrylic fibers become to be dyed with acid dyes, metal complex dyes and reactive dyes.
BRIEF DESCRIPTION OF FIGURES
In Figure 1 , two bipolar positively charged structures bound to the polymer chain are presented. DETAILED DESCRIPTION OF THE INVENTION
In this detailed description, the fibre dyeing method of the present invention is explained only by examples which will not have any limiting effect so that the subject can be understood better. The fibre dyeing process of the present invention will hereinafter be referred to as acrylic fibre and can be used in the process of modacrylic fibre manufacturing similar to the same process steps. The invention relates to a method which enables the acrylic fibers, which can be dyed with basic dyes, to be dyed with acidic dyes by modification in finishing baths optionally included in the finishing process without any change of the present acrylic fibre polymerization process. In Figure 1 , the polymer chain is represented. The negatively charged main structure represents the polyacrylonitrile copolymer. The positively charged (two ends) structures represent diamines of 1 -20 carbons or polydiamines (polyetheramine (jeffamine), poly allylamine (poly allylamine)).
In the method of the invention, the acrylic fibre manufactured with the negative end groups in the polymerization process undergoes transformation as having positive end groups with the help of an auxiliary chemical added to the finishing baths. The invention is used in the present system, and the positively charged end groups are obtained as a result of the modifications made in the finishing baths, which are involved in the finishing process, within the acrylic fibre manufacturing obtained by the wet spinning method of the known art.
In the acrylic fibre dyeing method of the present invention, fibres from coming from the spinneret during the manufacturing of the acrylic fiber to be dyed are subjected to washing step and curing in the coagulation baths.
The novelty of the present invention the number of finishing baths is increased to two (priorly one) and the polymer with positively charged end groups is obtained by applying chemical in the second finishing bath before finishing process. The preferred chemical may be positively charged monomer (two ends) such as diamine, triamine, tetramine or may be polymer with low molecular weight.
The chemical that enables the acrylic fibre to have cationic end groups should be chosen as polymers with positive charged end groups and with a molecular weight of up to 30,000. While the effectiveness of polymers with high molecular weight is reduced, the health risks are increased in polymers with low molecular weight. For this reason, polymers which have between 10000 and 15000 molecular weight are the ideal polymer groups. In the preferred embodiments of the invention, polyetheramine (jeffamine), poly allylamine (poly allylamine) and poly diamine (poly diamine) is used.
In a preferred embodiment of the invention, the chemical comprises at least 0.05 mmol/g, preferably 0.15 mmol/g of primer amine having a molecular weight of at least 1000 in order to prevent surface deformation and preferably more than 5000 in order to be safe for health.
The positively charged polymer, which can be dyed with negatively charged acidic dyes, is obtained due to the positively charged (two ends) monomer (cationic) or polymer applied in the finishing bath. Application of the preferred chemical
1 . It is applied by being diluted with water and feeding on fibre as more than 0,1 % concentration in the finishing bath. The chemical concentration is between maximum 0.1 % to 30%, preferably 0.1 % to 10%.
2. The application temperature of the chemical to be fed to the acrylic fibre having negatively charged ions in the finishing bath is between 20 °C and 100 °C.
Negatively charged acid dyes with acrylic fibre, in which cationic chemicals with two positive charges in the finish baths are applied, metal complex dyes or reactive dyes, in which metals such as copper-zinc form complex structures around the molecules, can be applied. Due to the fact that acrylic fibres with positive end groups obtained by chemical application have negative end groups at the same time, they can be dyed with basic dyes which have a positive charge optionally.
In the method of the invention, the wool fibre having positive end groups and the new fibre having both positive and negative end groups can be dyed with acidic and metal complex dyes as the same color at the same time in the same boiler.
In the method of the invention, the melange can be formed by using wool fibres having positive end groups and new fibre basic dyes having both positive and negative end groups in the same boiler. When the basic dye is used in the dyeing process, the wool fiber remains unpainted, while the new fibre changes color.

Claims

The invention relates to a method enabling the acrylic or modacrylic fibres to be dyed with negatively charged acid dyes, metal complex dyes, reactive dyes or positively charged basic dyes and enabling the application of monomer or polymer having positively charged end groups on the fibre by being fed in the finishing bath before the finishing characterized in that; it is to be acrylic and/or modacrylic fibre dyeing method consisting the following steps during the application of the chemical comprises at least 0.05 mmol/g of primer amine having a molecular weight of at least 1000 in order to prevent surface deformation on the acrylic or modacrylic fibre in the finishing bath:
• Applying by diluting with water and feeding on fibre, greater than 0.1 % concentration in finishing bath.
• Application of the chemical to be fed to acrylic fibres having negatively charged ions in the finishing bath between 20 ° C and 100 ° C.
The invention is a fiber dyeing method according to claim 1 or claim 2 characterized in that the chemical concentration used in the finishing bath is preferably between 0.1 % and %10.
The invention is a fiber dyeing method according to claim 1 characterized in that the chemical including at least 0.15 mmol / g primer amine.
The invention is a fiber dyeing method according to claim 1 characterized in that the molecular weight of the primer amine should be more than 5,000 in order to be safe for health.
The invention is a fiber dyeing method according to claim 1 characterized in that it includes polyetheramine (jeffamine), polyallylamine or poly-diamine as cationic chemicals.
The invention is a fiber dyeing method according to claim 1 characterized in that it includes diamine, triamine, tetraamine etc. of which two ends are bonded with amine groups of 1 -20 carbons (monomer) instead of polymer as cationic chemical.
PCT/TR2017/050369 2016-08-09 2017-08-03 Fibre dyeing method WO2018067092A2 (en)

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TR2016/11180 2016-08-09
TR201611180 2016-08-09

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WO2018067092A3 WO2018067092A3 (en) 2018-06-21

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Cited By (1)

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CN114134586A (en) * 2021-11-22 2022-03-04 唐山三友集团兴达化纤有限公司 Acid dye dyeable viscose fiber and preparation method thereof

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CN100449042C (en) 2005-12-22 2009-01-07 中国石化上海石油化工股份有限公司 Process of producing polyacrylic fiber dyeable with both cationic dye and acid dye
WO2011010590A1 (en) 2009-07-22 2011-01-27 日本エクスラン工業株式会社 Moisture-absorbing fiber dyeable with acid dyes and method for producing same

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US2899262A (en) * 1959-08-11 Method and composition for rendering
DE848687C (en) * 1949-07-27 1952-09-08 Bayer Ag Process for upgrading polyacrylonitrile or molded structures made of polyacrylonitrile
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Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
CN100449042C (en) 2005-12-22 2009-01-07 中国石化上海石油化工股份有限公司 Process of producing polyacrylic fiber dyeable with both cationic dye and acid dye
WO2011010590A1 (en) 2009-07-22 2011-01-27 日本エクスラン工業株式会社 Moisture-absorbing fiber dyeable with acid dyes and method for producing same

Cited By (2)

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CN114134586A (en) * 2021-11-22 2022-03-04 唐山三友集团兴达化纤有限公司 Acid dye dyeable viscose fiber and preparation method thereof
CN114134586B (en) * 2021-11-22 2023-10-10 唐山三友集团兴达化纤有限公司 Acid dye-dyeable viscose fiber and preparation method thereof

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