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
  • D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
  • D01F6/18—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polymers of unsaturated nitriles, e.g. polyacrylonitrile, polyvinylidene cyanide
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
  • C08K5/00—Use of organic ingredients
  • C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
  • C08K5/0041—Optical brightening agents, organic pigments
• • 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
  • D01F1/00—General methods for the manufacture of artificial filaments or the like
  • D01F1/02—Addition of substances to the spinning solution or to the melt
  • D01F1/06—Dyes
• • 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
  • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10S8/00—Bleaching and dyeing; fluid treatment and chemical modification of textiles and fibers
  • Y10S8/92—Synthetic fiber dyeing
  • Y10S8/927—Polyacrylonitrile fiber

Definitions

• the invention relates to spin-dyed polyacrylonitrile filaments and to a process of producing the same. More particularly the process consists in dissolving in the spinning solution to be used for the production of polyacrylonitrile filaments a nigrosine base and spinning the solution by conventional methods.
• Nigrosine bases to be used in the present process are known under the classical name Nigrosine Spirit Soluble (Colour Index, 2nd Edition, vol. 3, No. 50415 and Farbstofitabellen by Schultz, 7th Edition, page 427) and are preferably produced by heating an arylamine such as aniline, aniline salts, and nitroor nitroso benzene in the presence of iron and/or iron salts at about 180 to 200 C. They are of more or less indefinite structure.
• the process is advantageously carried out by dissolving the afore-mentioned nigrosine bases into the vinyl polymer in dissolved state.
• the dyestuffs are preferably dissolved in the organic solvent commonly used for spinning of the polyacrylonitrile, such as in dimetlhyl formamide.
• the solution thus obtained is then mixed with the solution of the acrylonitrile polymer and then worked up into shaped articles, particularly into filaments and fibres respectively.
• the new process leads to dark spin-dyed polyacrylonitrile fibres which exhibit excellent fastness properties
• Example 15 kilograms of polyacrylonitrile and 0.150 kilogram of Nigrosine Spirit Soluble (Colour Index, 2nd Edition, No. 50415) are dissolved in kilograms of dimethylformamide and the solution is then spun in conventional manner. A deep black spin-dyed fabric is thus obtained which exhibits excellent fastness proper-ties.
• a process for the manufacture of spin-dyed polyacrylonitrile filaments which comprises dissolving in the spinning solution to be used for the production of polyacrylonitrile filaments a nigrosine spirit soluble dyestuff and spinning the solution.

Landscapes

• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• General Chemical & Material Sciences (AREA)
• Health & Medical Sciences (AREA)
• Toxicology (AREA)
• Manufacturing & Machinery (AREA)
• Medicinal Chemistry (AREA)
• Polymers & Plastics (AREA)
• Organic Chemistry (AREA)
• Artificial Filaments (AREA)
• Coloring (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=7088844

Family Applications (1)

Country Status (4)

Cited By (6)

Families Citing this family (1)

Citations (5)

Family Cites Families (2)

• 1955
  • 1955-08-10 DE DEF18157A patent/DE1109830B/de active Pending
• 1956
  • 1956-08-03 GB GB24058/56A patent/GB817614A/en not_active Expired
  • 1956-08-03 FR FR1155366D patent/FR1155366A/fr not_active Expired
• 1960
  • 1960-09-07 US US54365A patent/US3232904A/en not_active Expired - Lifetime

Patent Citations (5)

Also Published As

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