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
  • D01F11/00—Chemical after-treatment of artificial filaments or the like during manufacture
  • D01F11/02—Chemical after-treatment of artificial filaments or the like during manufacture of cellulose, cellulose derivatives, or proteins
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
  • F01B25/00—Regulating, controlling or safety means
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
  • F01B2250/00—Accessories of steam engines; Arrangements or control devices of pumps, compressors or condensers, insofar as they influence the functioning of the steam engines
  • F01B2250/004—Devices for draining or idling of steam cylinders or for uncoupling piston and connecting rod

Definitions

• the fibre does not swell so highly, so that chemical attack on'the filament, and more particularly mechanical injury to the. fibre, cannot take place so readily.
• bobbins, vats and so forth are less attacked than when sodium sulphide and soda lye. are used, although in view of the high temperature of the desulphurizing bath, the chemical attack is still very considerable.
• one of the following substances is used for desulphurizing filaments, more particularly artificial silk, the working procedure being as usual, that is to say 1 to 2'hours treatment at 80 to 90 C., 1.5 to 2% solution being used.
• R1 is a polyatomic residue
• R2 and R3 are any desired'organic residues or hydrogen
• M is a metal
• R1 is a polyatomic residue
• R2 and R3 are any desired'organic residues or hydrogen
• M is a metal
• the fatty acid esters of the low aliphatic oxysulphonic acid salts generally formulae e; g. the oleic acid ester of. the sodium salt of oxyethyl sulphonic acid:
• fatty acid amides of the low aliphatic aminosulphonic acid salts (general formulae CnH2n--1CONH-A1k-SO3M and CnH2n+1-CO--NHA1k-SO3M) e. g. the oleic acid amide of the sodium salt of aminoethyl sulphonic acids:
• desulphurization with the said substances has the advantage that the substances have a completely neutral reaction in aqueous solution, so that scarcely any attack on thebobbins, vats and so forth can take place. It is true that it has already been proposed to desulphurize with neutral substances, e. g. with alcohol vapours and alcoholic solutions of glycerin, grape sugar and cane sugar (U. S. Patent No. 1,651,404 and French Patent No. 655,- '729).
• the "said substances act as desulphuriz'ing agents.
• the desulphurizing action is a property of the free sulphonic acids; in the :case of substances coming in class 4, it is, for
• the known advantages of the said substances as scrooping agents come particularly to thefore when the substances are simultaneously used for desulphurizing purposes. More particularly-the simultaneous desulphurization and scrooping with the same treatment baths is advantageous when the whole of the after-treatment is carried out on the bobbin or in the pot, since in such cases the purity of the treatment liquids is a matter of' primary importance.
• the artificial filament after-treated according to the invention is characterized not only by its cleanness, but also to anoutstanding and pre-eminent extent by its softness and flexibility.
• WhatI claim is 1.
• the step of desulphurizing the filament by, treatment with a neutral aqueous solution of at least one substance selected from thefollowing group of neutral water-soluble wetting and scroo'ping' agents of fatty character: salts of sulphuric acid esters of high molecular alcohols and the fatty acid esters of low aliphatic oxy-sulphonic acid salts.

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• General Chemical & Material Sciences (AREA)
• Textile Engineering (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
• Artificial Filaments (AREA)
• Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=6477533

Family Applications (1)

Country Status (5)

Cited By (3)

• 0
  • NL NL38535D patent/NL38535C/xx active
  • BE BE400821D patent/BE400821A/xx unknown
• 1911
  • 1911-04-26 FR FR428955A patent/FR428955A/fr not_active Expired
• 1933
  • 1933-12-27 US US704204A patent/US2066371A/en not_active Expired - Lifetime
• 1934
  • 1934-01-11 FR FR766877D patent/FR766877A/fr not_active Expired
  • 1934-01-12 GB GB1226/34A patent/GB428955A/en not_active Expired
  • 1934-01-12 GB GB1243/35A patent/GB429165A/en not_active Expired

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