GB467500A - Improvements in and relating to the manufacture and production of artificial threads, filaments and the like by the viscose process - Google Patents

Improvements in and relating to the manufacture and production of artificial threads, filaments and the like by the viscose process

Info

Publication number
GB467500A
GB467500A GB34532/35A GB3453235A GB467500A GB 467500 A GB467500 A GB 467500A GB 34532/35 A GB34532/35 A GB 34532/35A GB 3453235 A GB3453235 A GB 3453235A GB 467500 A GB467500 A GB 467500A
Authority
GB
United Kingdom
Prior art keywords
filaments
acid
bath
sulphuric acid
per cent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB34532/35A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Akzo Nobel UK PLC
Original Assignee
Courtaulds PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to NL47053D priority Critical patent/NL47053C/xx
Priority to BE419032D priority patent/BE419032A/xx
Application filed by Courtaulds PLC filed Critical Courtaulds PLC
Priority to GB34532/35A priority patent/GB467500A/en
Priority to US113072A priority patent/US2192074A/en
Priority to FR814800D priority patent/FR814800A/en
Publication of GB467500A publication Critical patent/GB467500A/en
Expired legal-status Critical Current

Links

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
    • 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

Landscapes

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

Abstract

Artificial filaments of high tenacity are obtained by coagulating the extruded viscose filaments in a dilute acid bath containing sulphuric acid and also sufficient metallic sulphates to delay the decomposition to cellulose hydrate, and then stretching the filaments by passing them round rollers rotating at progressively increasing speeds, while preventing them from rubbing or slipping on the rollers, after they have left the coagulation bath, in the presence of hot dilute acid at a temperature of at least 60 DEG C. The incompletely decomposed filaments may be passed through a bath containing hot dilute sulphuric acid, or they may be subjected to the action of steam or hot gases such as air which heat up the acid from the coagulating bath adhering to the filaments. After the stretching in presence of acid, the filaments may be washed with hot or cold water and stretching may be continued during the washing. The process is applicable to the production of continuous filaments or of staple fibre. The filaments after being stretched may be passed to a cutting machine. The coagulation bath preferably contains zinc sulphate in addition to sodium sulphate and sulphuric acid. In an example viscose is extruded into a bath containing 9,5 per cent of sulphuric acid, 4 per cent of zinc sulphate and 20 per cent of sodium sulphate at 50 DEG C. The coagulated filaments are led from the bath directly to and around a roller, then through a bath containing 1,5 per cent of sulphuric acid and small quantities of sodium sulphate and zinc sulphate at 95 DEG C., then round a second roller rotating at a higher speed than the first, and they are collected in a centrifugal box. Specifications 149,295, 239,254, 274,521, [all in Class 2 (ii)], 289,028, [Class 120 (iii)], 298,548, 309,053, 335,605, [all in Class 2 (ii)], 340,138, 342,027, and 370,943 are referred to.
GB34532/35A 1935-12-12 1935-12-12 Improvements in and relating to the manufacture and production of artificial threads, filaments and the like by the viscose process Expired GB467500A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
NL47053D NL47053C (en) 1935-12-12
BE419032D BE419032A (en) 1935-12-12
GB34532/35A GB467500A (en) 1935-12-12 1935-12-12 Improvements in and relating to the manufacture and production of artificial threads, filaments and the like by the viscose process
US113072A US2192074A (en) 1935-12-12 1936-11-27 Manufacture and production of artificial threads, filaments, and the like by the viscose process
FR814800D FR814800A (en) 1935-12-12 1936-12-11 Manufacture of yarn, filaments and similar articles by the viscose process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB34532/35A GB467500A (en) 1935-12-12 1935-12-12 Improvements in and relating to the manufacture and production of artificial threads, filaments and the like by the viscose process

Publications (1)

Publication Number Publication Date
GB467500A true GB467500A (en) 1937-06-14

Family

ID=10366797

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34532/35A Expired GB467500A (en) 1935-12-12 1935-12-12 Improvements in and relating to the manufacture and production of artificial threads, filaments and the like by the viscose process

Country Status (5)

Country Link
US (1) US2192074A (en)
BE (1) BE419032A (en)
FR (1) FR814800A (en)
GB (1) GB467500A (en)
NL (1) NL47053C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE763247C (en) * 1938-05-12 1951-05-17 Glanzstoff Ag Process for the production of rayon threads from rayon

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE767434C (en) * 1938-10-04 1952-08-07 Spinnstofffabrik Zehlendorf A Process for the production of artificial threads with particularly high wet strength using the viscose process
DE752623C (en) * 1941-05-25 1951-08-02 Glanzstoff Ag Process for the production of high-strength viscose rayon
DE749501C (en) * 1941-05-25 1952-04-17 Spinnfaser A G Process for the production of rayon from viscose
US2515834A (en) * 1942-11-13 1950-07-18 Du Pont Cellulose filaments and method of producing same
US2479218A (en) * 1944-12-12 1949-08-16 Int Paper Canada Process for making rayon filaments
DE973617C (en) * 1951-09-14 1960-04-14 North American Rayon Corp Process to avoid the formation of zinc sulfide precipitates and sulfur deposits in the hot water two-bath spinning process
NL227978A (en) * 1957-06-21
US3084021A (en) * 1960-02-29 1963-04-02 Morimoto Saichi Process for producing regenerated cellulose filaments
US3109699A (en) * 1962-04-30 1963-11-05 Courtaulds North America Inc Method for making rayon filaments
NL292282A (en) * 1962-05-04 1900-01-01
BE632439A (en) * 1962-05-16
US3311445A (en) * 1963-12-06 1967-03-28 Standard Oil Co Process of reacting cellulose fibers with carbonyl sulfide and product thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE763247C (en) * 1938-05-12 1951-05-17 Glanzstoff Ag Process for the production of rayon threads from rayon

Also Published As

Publication number Publication date
NL47053C (en)
BE419032A (en)
US2192074A (en) 1940-02-27
FR814800A (en) 1937-06-29

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