Classifications

• • D—TEXTILES; PAPER
  • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
  • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
  • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
  • D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
  • D01F6/60—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyamides
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
  • C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
  • C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
  • C08G69/04—Preparatory processes
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
  • C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
  • C08G69/08—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from amino-carboxylic acids
  • C08G69/14—Lactams
  • C08G69/16—Preparatory processes
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
  • C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
  • C08G69/08—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from amino-carboxylic acids
  • C08G69/14—Lactams
  • C08G69/16—Preparatory processes
  • C08G69/18—Anionic polymerisation
  • C08G69/20—Anionic polymerisation characterised by the catalysts used
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
  • C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
  • C08G69/26—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
  • C08G69/28—Preparatory processes
• • 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
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
• • 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
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
  • Y10T428/2913—Rod, strand, filament or fiber
• • 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
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
  • Y10T428/2913—Rod, strand, filament or fiber
  • Y10T428/2933—Coated or with bond, impregnation or core
  • Y10T428/2964—Artificial fiber or filament
  • Y10T428/2967—Synthetic resin or polymer
• • 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
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
  • Y10T428/2913—Rod, strand, filament or fiber
  • Y10T428/2933—Coated or with bond, impregnation or core
  • Y10T428/2964—Artificial fiber or filament
  • Y10T428/2967—Synthetic resin or polymer
  • Y10T428/2969—Polyamide, polyimide or polyester
• • 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.]
  • Y10T442/10—Scrim [e.g., open net or mesh, gauze, loose or open weave or knit, etc.]
  • Y10T442/102—Woven scrim
  • Y10T442/183—Synthetic polymeric fiber
• • 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.]
  • Y10T442/30—Woven fabric [i.e., woven strand or strip material]

Definitions

• the present invention relates to a process for the preparation of aguimolar mixtures of monomers (I), selected from the group consisting of actams, w-aminocarboxylic acids, w-aminocarboxylic acid nitriles, w-aminocarboxylic acid amides, w-aminocarboxylic acid salts, w-aminocarboxylic acid esters Diamines and dicarboxylic acids, dicarboxylic acid / diamine salts, dinitriles and diamines or mixtures of such monomers, accessible polyamides (VIII), characterized in that polymerization of the monomers (I) in the presence of
• (II), (III), (IV), (V), (VI) and (VII) are bonded to the polymer chain via amide bonds and the sum of the amounts required for amide formation visibly the polymer chain capable of amine groups of components (II), (IV) and (V) is smaller than the sum of the carboxylic acid groups of components (II), (III), (VI) and (VII) capable of amide formation with respect to the polymer chain.
• polyamides obtainable by this process, the use of such polyamides for the production of fibers, fabrics and moldings, and fibers, fabrics and moldings obtainable from such polyamides.
• polyamides for the production of fibers and yarns is generally known, for example from: Ulimann's Encyclopedia of Industrial Chemistry, 5th Ed., Vol. A10, VCH Verlagsgesellschaft mbH, Weinheim, Germany, 1987, pages 567-579 ,
• the yarn is produced in a manner known per se by melting the polyamide, spinning the polyamide into a fiber, drawing and texturing this fiber and, if appropriate, post-treating the fiber. This can be followed by cabling and heat fixation of the yarn.
• Fixing methods are known per se, such as the heat set method from Hörauf-Suessen, Germany.
• An essential step in fixing is guiding the yarn through a climatic chamber under defined process conditions, such as the dwell time of the yarn and the temperature and relative humidity of the atmosphere in the climatic chamber.
• the disadvantage here is that the quality, for example the APHA (Hazen) number according to the European standard EN 1557 (corresponding to US standard ASTM D1003) and the relative viscosity of yarns made from polyamides known per se, deteriorates significantly with this fixation.
• the drop in the relative viscosity and the increase in the APHA number are indications of degradation, ie damage, of the polymer.
• the object of the present invention was to provide polyamides from which fibers, films or moldings, in particular yarns, can be produced which do not have the disadvantage mentioned, and processes which make the production of such polyamides technically simple and enable economical way.
• polyamides defined at the outset polyamides
• polyamides 'the use of such polyamides for preparing were Fibers, fabrics and moldings, as well as fibers, fabrics and moldings, which are available from such polyamides, found.
• Polyamides are understood to mean homopolymers, copolymers, mixtures and grafts of synthetic long-chain polyamides which, as an essential component, have recurring amide groups in the main polymer chain.
• polyamides are nylon 6 (polycaprolactam), nylon 6.6 (polyhexamethylene adipamide), nylon 4.6 (polytetramethylene adipamide), nylon 6.10 (polyhexamethylene sebacamide), nylon 6.12 (poly-hexamethylene-1, 10 -decanedicarboxylic acid amide), nylon 7 (polyenantholactam), nylon 11 (polyundecanolactam), nylon 12 (polydodecanolactam).
• polyamides are known to have the generic name of nylon.
• polyamines are also understood the so-called aramids (aromatic polyamides), such as poly-metaphenylene isophthalamide (NOMEX ® fiber ÜS-A-3,287,324) or poly-para-phenyleneterephthalamide (KEVLAR ® fiber, US-A-3, 671 , 542).
• polyamides can be produced by two processes.
• the amino and carboxyl end groups of the starting monomers or starting oligomers react with one another to form an amide group and Water.
• the water can then be removed from the polymer mass.
• the amino and amide end groups of the starting monomers or starting oligomers react with one another to form an amide group and ammonia.
• the ammonia can then be removed from the polymer mass.
• This polymerization reaction is usually referred to as polycondensation.
• polyaddition The polymerization from lactams as starting monomers or starting oligomers is usually referred to as polyaddition.
• monomers (I) selected from the group consisting of lactams, w-aminocarboxylic acids, w-aminocarboxylic acid nitriles, w-aminocarboxylic acid amides, w-aminocarboxylic acid salts, w-aminocarboxylic acid esters, equimolar mixtures of diamines and dicarboxylic acids, dicarboxylic acid / diamine salts and dinitriles Diamines or mixtures of such monomers.
• Monomers or oligomers of C 2 - to C 2 o -amino acids such as 6-aminocaproic acid amide, 11-aminoundecanoic acid amide and their dimers, trimers, tetramers, pentamers or hexamers,
• Esters preferably C 1 -C 4 -alkyl esters, such as methyl, ethyl, n-propyl, i-propyl, n-butyl, i-butyl, s-butyl ester, from C 2 - to C 2 o ⁇ / preferably C 3 - to Ci ⁇ - aminocarboxylic acids, such as 6-aminocaproic acid esters, for example methyl 6-aminocaproic acid ester, 11-aminoundecanoic acid esters, for example methyl 11-aminoundecanoic acid,
• C 2 - to Co - preferably C 2 - to C 14 - aliphatic dicarboxylic acid or its mono- or dinitriles, such as sebacic acid, decanedicarboxylic acid, adipic acid, sebaconitrile, decanoic dinitrile or adiponitrile,
• Cs - to C 2 o - / preferably C 8 - to C12 - aromatic dicarboxylic acid or its derivatives for example chlorides, such as 2,6-naphthalenedicarboxylic acid, preferably isophthalic acid or terephthalic acid,
• C 9 - to C 2 o - preferably C 9 - to -C 8 - arylaliphatic dicarboxylic acid or its derivatives, for example chlorides, such as o-, m- or p-phenylenediacetic acid,
• C - to C 2 o - preferably C 2 - to C 14 - aliphatic dicarboxylic acid or its mono- or dinitriles, such as sebacic acid, decanedicarboxylic acid, adipic acid, sebaconitrile, decanoic dinitrile or adiponitrile,
• C 8 - to C 2 n - preferably C 8 - to -C - aromatic dicarboxylic acid or its derivatives, for example chlorides, such as 2, 6-naphthalenedicarboxylic acid, preferably isophthalic acid or terephthalic acid,
• Cg - to C 2 o - preferably C 9 - to C 8 - arylaliphatic dicarboxylic acid or its derivatives, for example chlorides, such as o-, - or p-phenylenediacetic acid,
• C 2 - to C 2 o ⁇ preferably C 2 - to C1 - aliphatic dicarboxylic acid or its mono- or dinitriles, such as sebacic acid, decanedicarboxylic acid, adipic acid, sebaconitrile, decanoic dinitrile or adiponitrile, as well as their dimers, trimers, tetramers, pentamers or hexamers,
• the weight fractions mentioned for the compounds (II), (III), (IV), (V), (VI) and (VII) relate to the amount of monomer (I) used, unless stated otherwise.
• the polymerization of monomer (I) is carried out in the presence of a sterically hindered piperidine derivative (II) which has a group capable of amide formation with respect to the polymer main chain of polyamide (VIII), or mixtures thereof.
• Preferred compounds (II) are those of the formula
• R 1 stands for a functional group which is capable of forming amides with respect to the polymer main chain of polyamide (VIII), preferably a group - (NH) R 5 , where R 5 stands for hydrogen or -CC 8 alkyl, or a carboxyl group or a carboxyl derivative or a group - (CH) X (NH) R 5 , where X is 1 to 6 and R5 is hydrogen or Ci-C ⁇ -alkyl, or a group - (CH 2 ) y COOH, where Y represents 1 to 6, or a - (CH 2 ) y COOH acid derivative, where Y represents 1 to 6, in particular represents a group -NH 2 ,
• R 2 represents an alkyl group, preferably a C 1 -C 4 -alkyl group, such as methyl, ethyl, n-propyl, i-propyl, n-butyl, i-butyl, s-butyl, s-butyl, in particular one methyl group,
• R 3 represents hydrogen, C 1 -C 4 -alkyl or OR 4 , where R 4 represents hydrogen or C 1 -C 7 alkyl, in particular R 3 represents hydrogen,
• the tertiary, in particular secondary, amino groups of the piperidine ring systems usually do not react because of steric hindrance.
• compound (II) is used in amounts of at least 0.01% by weight, preferably at least 0.05% by weight, in particular at least 0.1% by weight.
• compound (II) is used in amounts of at most 0.5% by weight, preferably at most 0.3% by weight, in particular at most 0.2% by weight.
• the polymerization of monomer (I) is carried out in the presence of a sulfonated compound (III) with several, such as two, three or four, preferably two, carboxyl groups or mixtures thereof which are capable of forming amides with regard to the polymer main chain of polyamide (VIII) ,
• Such compounds (III) can carry substituents, such as halogens, for example fluorine, chlorine or bromine, or can be substituted by us.
• compound (III) is used in amounts of at least 0.1% by weight, preferably at least 0.5% by weight, in particular at least 1% by weight.
• compound (III) is used in amounts of at most 5% by weight, preferably at most 2% by weight, in particular at most 1.5% by weight.
• the polymerization of monomer (I) is carried out, if appropriate in the presence of a compound (IV) having several, such as two, three or four, preferably two, amine groups or mixtures thereof which are capable of forming amides with respect to the polymer main chain of polyamide (VIII) by.
• compound (IV) there are advantageously C - to C 2 o -, preferably C 2 - to C 12 - alkyl diamines, such as tetramethylene diamine or preferably hexamethylene diamine, Cs - to C o -, preferably ⁇ - to Cio ⁇ aromatic diamines, such as m- or p-phenylenediamine, or C - to C 2 o ⁇ ⁇ preferably C 8 - to C ⁇ 8 - arylaliphatic diamines, such as m- or p-xylylenediamine, or such compounds (IV) as are used in the polymerization of Monomer (I) are usually used as chain regulators. Hexamethylene diamine is particularly preferred.
• Such compounds (IV) can carry substituents, such as halogens, for example fluorine, chlorine or bromine, sulfonic acid groups or their salts, such as lithium, sodium, potassium salts, or be unsubstituted.
• substituents such as halogens, for example fluorine, chlorine or bromine, sulfonic acid groups or their salts, such as lithium, sodium, potassium salts, or be unsubstituted.
• Compound (IV) can advantageously be used in amounts of 0 to 0.5% by weight, preferably 0 to 0.35% by weight, in particular 0 to 0.25% by weight.
• compound (IV) in amounts such that the molar amount of the amine groups of compound (IV) capable of amide formation with regard to the polymer main chain of polyamide (VIII) is smaller than the molar amount of the amide group with respect to the polymer main chain of polyamide (VIII) capable carboxylic acid groups of compound (III).
• the polymerization of monomer (I) is carried out, if appropriate, in the presence of a compound (V) which differs from monomer (I) and has an amino group or mixtures which are capable of amide formation with respect to the polymer main chain of polyamide (VIII).
• Suitable compound (V) is advantageously C 2 - to C 2 o ⁇ ⁇ preferably C - to C12 - alkyl amines, such as cyclohexylamine, C 6 - to C 20 ⁇ , preferably C - to Cio ⁇ aromatic monoamines such as aniline, or C7 - to C20 - # preferably C 8 - to C ⁇ 8 - arylaliphatic monoamines, such as benzylamine, or such compounds (V) as are customarily used as chain regulators in the polymerization of monomer (I).
• Such compounds (V) can carry substituents, such as halogens, for example fluorine, chlorine or bromine, sulfonic acid groups or their salts, such as lithium, sodium, potassium salts, or be unsubstituted.
• substituents such as halogens, for example fluorine, chlorine or bromine, sulfonic acid groups or their salts, such as lithium, sodium, potassium salts, or be unsubstituted.
• Compound (V) can advantageously be used in amounts of 0 to 0.5% by weight, preferably 0 to 0.35% by weight, in particular 0 to 0.25% by weight.
• the polymerization of monomer (I) is carried out, if appropriate, in the presence of a compound (VI) which differs from monomer (I) with a carboxylic acid group which is capable of forming amides with regard to the main polymer chain of polyamide (VIII) or mixtures thereof.
• compound (VI) there are advantageously C 2 - to C 20 -, preferably C 2 - to C 2 - carboxylic acids, such as acetic acid, propionic acid, C - to C 21 -, preferably C 7 - to Cn - aromatic carboxylic acids, such as benzoic acid, or C 8 - to C 21 -, preferably C9 - to C 19 - arylaliphatic carboxylic acids, or such compounds (VI) as are usually used, for example, as chain regulators in the polymerization of monomer (I).
• C 2 - to C 20 - preferably C 2 - to C 2 - carboxylic acids, such as acetic acid, propionic acid, C - to C 21 -, preferably C 7 - to Cn - aromatic carboxylic acids, such as benzoic acid, or C 8 - to C 21 -, preferably C9 - to C 19 - arylaliphatic carboxylic acids, or such compounds (VI) as are
• Such compounds (VI) can carry substituents, such as halogens, for example fluorine, chlorine or bromine, sulfonic acid groups or their salts, such as lithium, sodium, potassium salts, or be unsubstituted.
• Compound (VI) can advantageously be used in amounts of 0 to 0.5% by weight, preferably 0 to 0.35% by weight, in particular 0 to 0.25% by weight.
• the polymerization of monomer (I) is carried out, if appropriate, in the presence of a compound (VII) which differs from compound (III) and contains several, such as two, three or four, preferably two, carboxylic acid groups capable of amide formation with respect to the polymer main chain of polyamide (VIII) or Mixes of these by.
• a compound (VII) which differs from compound (III) and contains several, such as two, three or four, preferably two, carboxylic acid groups capable of amide formation with respect to the polymer main chain of polyamide (VIII) or Mixes of these by.
• compound (VII) there are advantageously C 2 - to C 20 ⁇ , preferably C 2 - to C 12 - dicarboxylic acids, such as sebacic acid, dodecanoic acid, cyclohexane-1, 4-dicarboxylic acid, or preferably adipic acid, C 8 - bis C22 - / preferably C 8 - to C ⁇ 2 - aromatic dicarboxylic acids, such as benzene and naphthalenedicarboxylic acids, preferably 2, 6-naphthalenedicarboxylic acid, isophthalic acid or terephthalic acid, or C 9 - to C 22 -, preferably C 9 - to C 20 - arylaliphatic dicarboxylic acids or such compounds (VII) as are usually used as chain regulators in the polymerization of monomers (I). Terephthalic acid and isophthalic acid are particularly preferred.
• Such compounds (VII) can carry substituents, such as halogens, for example fluorine, chlorine or bromine, sulfonic acid groups or their salts, such as lithium, sodium or potassium salts, or be unsubstituted.
• substituents such as halogens, for example fluorine, chlorine or bromine, sulfonic acid groups or their salts, such as lithium, sodium or potassium salts, or be unsubstituted.
• sulfonated dicarboxylic acids in particular sulfoisophthalic acid
• salts such as alkali salts, for example lithium, sodium, potassium salts, preferably lithium or sodium salt, in particular lithium salt.
• Compound (VII) can advantageously be used in amounts of 0 to 0.5% by weight, preferably 0 to 0.35% by weight, in particular 0 to 0.25% by weight.
• the amounts of (I), (II), (III), (IV), (V), (VI) and (VII) add up to 100%.
• components (II), (III), (IV), (v), (VI) and (VII) are bound to the polymer chain via amide bonds.
• the sum of the amine groups of components (II), (IV) and (V) capable of amide formation with regard to the polymer chain is smaller than the sum of those with regard to amide formation the polymer chain capable carboxylic acid groups of components (II), (III), (VI) and (VII).
• the compounds of the formulas (II), (III), (IV), (V), (VI) and (VII) can be added to the starting monomers (I) or the polymerizing reaction mixture and by reacting at least one of the amide-forming groups on the main polymer chain of the polyamide are bound.
• the process according to the invention gives polyamides with the advantageous properties mentioned at the outset.
• the polymerization or polycondensation of the starting monomers (I) in the presence of the compounds (II), (III), (IV), (V), (VI) and (VII) is preferably carried out by the customary processes.
• the polymerization of caprolactam as monomer (I) in the presence of (II), (III), (IV), (V), (VI) and (VII) can be carried out, for example, according to the methods described in DE-A 14 95 198, DE- A 25 58 480, DE-A 44 13 177, Polymerization Processes, Interscience, New York, 1977, pp. 424-467 and Handbuch der Technische Polymerchemie, VCH Verlagsgesellschaft, Weinheim, 1993, pp.
• the polymerization of AH salt as (I) in the presence of (II), (III), (IV), (V), (VI) and (VII) can be carried out by the customary batch process (see: Polymerization Processes, Interscience, New York, 1977, pp. 424-467, in particular 444-446) or by a continuous process, e.g. according to EP-A 129 196.
• (II), (III), (IV), (V), (VI), (VII) and starting monomers (I) can be fed to the reactor separately or as a mixture.
• the polymerization or polycondensation is carried out by the process according to the invention in the presence of at least one pigment.
• Preferred pigments are titanium dioxide, with titanium dioxide preferably being in the anatase modification, or coloring compounds.
• the polyamides according to the invention can advantageously be used for the production of threads, fibers, foils, fabrics and moldings. Threads obtained from polyamides, in particular polycaprolactam, by rapid spinning at take-off speeds of at least 4000 m / min are particularly advantageous.
• the threads, fibers, films, sheets and moldings obtained using the polyamides according to the invention can be used in a variety of ways, for example as textile clothing or carpet fibers.
• the heat was fixed using the Hörauf-Suessen heat set method on a GVA 5000 yarn finishing system with the following parameters:
• the APHA number was determined according to the European standard EN 1557 compared to the Pt-Co standard.
• Example 1 Yarns of caprolactam as monomer (I) were produced with the compositions according to Table 1 and the APHA values were determined before and after heat setting.
• TAD 4-amino-2, 2,6, 6-tetramethylpiperidine
• HMD hexamethylene diamine
• LiSIP lithium sulfoisophthalate

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• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Health & Medical Sciences (AREA)
• Medicinal Chemistry (AREA)
• Polymers & Plastics (AREA)
• Organic Chemistry (AREA)
• General Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Polyamides (AREA)
• Artificial Filaments (AREA)
• Woven Fabrics (AREA)
• Manufacture Of Macromolecular Shaped Articles (AREA)

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  • 2001-06-22 MX MXPA02011988 patent/MX231964B/es active IP Right Grant
  • 2001-06-22 WO PCT/EP2001/007126 patent/WO2002000765A1/de active IP Right Grant
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  • 2001-06-22 AU AU2001283880A patent/AU2001283880A1/en not_active Abandoned
  • 2001-06-22 BR BR0111940-0A patent/BR0111940A/pt not_active IP Right Cessation
  • 2001-06-22 DE DE50108393T patent/DE50108393D1/de not_active Expired - Lifetime
  • 2001-06-22 SK SK1795-2002A patent/SK17952002A3/sk unknown
  • 2001-06-22 HU HU0300956A patent/HUP0300956A2/hu unknown
  • 2001-06-25 AR ARP010103007A patent/AR029276A1/es active IP Right Grant
  • 2001-06-26 PH PH12001001591A patent/PH12001001591B1/en unknown
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