Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04Q—SELECTING
  • H04Q3/00—Selecting arrangements
  • H04Q3/0008—Selecting arrangements using relay selectors in the switching stages
• • 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
  • D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
  • D01F2/06—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from viscose
  • D01F2/08—Composition of the spinning solution or the bath
  • D01F2/10—Addition to the spinning solution or spinning bath of substances which exert their effect equally well in either
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
  • H01H67/00—Electrically-operated selector switches
  • H01H67/22—Switches without multi-position wipers

Definitions

• the present invention relates to the manufacture of rayon yarn, and more particularly to the production of high tenacity viscose rayon yarn that is characterized by its excellent fatigue resistance and improved strength which makes it especially suitable for use in reinforcing rubber articles such as cord tires and the like.
• the amount of Ethoquad added to the viscose can vary within a limited range but for the best results it has been determined that from 2% to 4% based on oven dry, recoverable cellulose in viscose should be used.
• this term is abbreviated to CiV, i.e., cellulose in viscose.
• CiV i.e., cellulose in viscose.
• the temperature of the coagulating bath should be in a range of 47-57" C. for beneficial effects, and consistently the best results are obtained when the temperature of the spinbath is in a range of 48-52 C.
• the concen ration of zinc sulphate in the spinbath is in a range of 4.5-6.0%.
• a spinneret assembly is preferably used of the type shown in U.S. Patent No. 2,834,046, and while the length of the tube is not critical, good results have been obtained when using one from 24 to 36 inches in length depending on the spinning speed.
• Example I A viscose was prepared from wood pulp using 7.76% cellulose and 5.9% total alkali. Th viscose was then aged to give a NH Cl number of 20. Immediately before spinning (extruding) the viscose, a water solution was injected containing enough Ethoquad C/25 to provide the viscose with 2.5% CiV. This dilution lowered the viscose composition to 7.5/5.7 and the NH Cl number was lowered to 18. This viscose was spun into a coagulating bath having a composition of 4.8%
• Example I Viscoses were prepared and spun under the same conditions as in Example 1, except that they contained 3.0% Ethoquad C/25 CW, and the spinbath temperature was lowered to 49 C. The samples differed only in the amount of Ethomeen C/ZS" added to the spinbath. The averages of the singles (yarn) and cord properties are tabulated below:
• a process for the production of high tenacity, highly fatigue resistant, viscose rayon yarn which comprises incorporating a quaternary derivative of an ethoxylated amine into a viscose solution, extruding the solution through a spinneret into an aqueous sulphuric acid coagulating bath containing zinc sulphate and 800- 2000 p.p.m. of a long chain aliphatic tertiary amineethylene oxide condensate to form a filamentary yarn therefrom and withdrawing the yarn from the bath and aftertreating the same.
• a process for the production of high tenacity, highly fatigue resistant, viscose rayon yarn which comprises incorporating a quaternary derivative of an ethoxylated amine into a viscose solution, extruding the solution through a spinneret into an aqueous sulphuric acid coagulating bath containing zinc sulphate and at least 400 p.p.m. of a long chain aliphatic tertiary amine-ethylene oxide condensate to form a filamentary yarn therefrom, passing the thus formed yarn to a second hot bath and during passing therethrough stretching the yarn at least 100%.
• a process for the production of high tenacity, highly fatigue resistant, viscose rayon yarn which comprises incorporating a quaternary derivative of an ethoxylated amine into a viscose solution, extruding the solution through a spinneret into a confined aqueous sulphuric acid coagulating bath containing zinc sulphate and at least 400 p.p.m. of a long chain aliphatic tertiary amine- 6o ethylene oxide condensate to form a filamentary yarn therefrom and withdrawing the yarn from the bath and aftertreating the same.
• a process for the production of high tenacity, highly fatigue resistant, viscose rayon yarn which comprises in corporating a quaternary derivative of an ethoxylated amine into a viscose solution, extruding the solution through a spinneret into a bath maintained at a temperature of 48-62 C. and containing sulphuric acid, sodium sulphate, zinc sulphate and at least 400 p.p.m. of a long chain aliphatic tertiary amine-ethylene oxide condensate to form a filamentary yarn therefrom and withdrawing the yarn from the bath and aftertreating the same.
• a process for the production of high tenacity, highly fatigue resistant, viscose rayon yarn which comprises incorporating a quaternary derivative of an ethoxylated amine into a viscose solution having a maturity in a range of l720 NH Cl number, extruding the solution through a spinneret into an aqueous sulphuric acid coagulating bath containing zinc sulphate and at least 400 p.p.m. of a long chain aliphatic tertiary amineethylene oxide condensate to form a filamentary yarn therefrom and withdrawing the yarn from the bath and aftertreating the same.
• a process for the production of high tenacity, highly fatigue resistant, viscose rayon yarn which comprises incorporating about 2.5% CiV of a quaternary derivative of an ethoxylated amine into a viscose solution, extruding the solution through a spinneret into an aqueous sulphuric acid coagulating bath containing zinc sulphate and 800-2000 p.p.m. of a long chain aliphatic tertiary amine-ethylene oxide condensate to form a filamentary yarn therefrom and withdrawing the yarn from the bath and aftertreating the same.
• a process for the production of high tenacity, highly fatigue resistant, viscose rayon yarn which comprises incorporating into a viscose solution a modifier of the following formula:
• R represents an alkyl radical containing at least six carbon atoms, x+y equal fifteen, and Z is an anion, extruding the solution through a spinneret into an aqueous sulphuric acid coagulating bath containing zinc sulphate and 800 to 2000 p.p.m. of a long chain aliphatic tertiary amine-ethylene oxide condensate to form a filamentary yarn therefrom and withdrawing the yarn from the bath and aftertreating the same.

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• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• General Chemical & Material Sciences (AREA)
• Textile Engineering (AREA)
• Computer Networks & Wireless Communication (AREA)
• Artificial Filaments (AREA)

Priority Applications (13)

Applications Claiming Priority (2)

Publications (1)

Family

ID=27086120

Family Applications (1)

Country Status (7)

Cited By (1)

Citations (3)

• 0
  • BE BE560509D patent/BE560509A/xx unknown
  • NL NL109819D patent/NL109819C/xx active
  • NL NL212326D patent/NL212326A/xx unknown
• 1957
  • 1957-08-05 CH CH4914057A patent/CH363122A/de unknown
  • 1957-08-05 DE DEA27662A patent/DE1208846B/de active Pending
  • 1957-08-14 GB GB25681/57A patent/GB871334A/en not_active Expired
  • 1957-09-10 FR FR1182556D patent/FR1182556A/fr not_active Expired
• 1958
  • 1958-06-02 US US738950A patent/US2974005A/en not_active Expired - Lifetime
• 1959
  • 1959-05-13 CH CH7316359A patent/CH367272A/de unknown
  • 1959-05-29 GB GB18297/59A patent/GB879995A/en not_active Expired

Patent Citations (4)

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