GB782957A - Drying of filamentary materials - Google Patents

Drying of filamentary materials

Info

Publication number
GB782957A
GB782957A GB26419/55A GB2641955A GB782957A GB 782957 A GB782957 A GB 782957A GB 26419/55 A GB26419/55 A GB 26419/55A GB 2641955 A GB2641955 A GB 2641955A GB 782957 A GB782957 A GB 782957A
Authority
GB
United Kingdom
Prior art keywords
solvent
per cent
filaments
evaporating
treated
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
GB26419/55A
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.)
Celanese Corp
Original Assignee
Celanese Corp
Celanese Corp of America
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
Application filed by Celanese Corp, Celanese Corp of America filed Critical Celanese Corp
Publication of GB782957A publication Critical patent/GB782957A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/04—Dry spinning methods
    • 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
    • D01F2/24—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from cellulose derivatives
    • D01F2/28—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from cellulose derivatives from organic cellulose esters or ethers, e.g. cellulose acetate
    • D01F2/30—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from cellulose derivatives from organic cellulose esters or ethers, e.g. cellulose acetate by the dry spinning process

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Artificial Filaments (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Abstract

A process for reducing the solvent content of filamentary material having a basis of a carboxylic acid ester of cellulose, particularly cellulose triacetate having an acetyl value of 59.5 per cent or more reckoned as acetic acid and containing at most 0.2 free hydroxyl groups per anhydroglucose unit, and which contains solvent consisting of methylene chloride with or without a lower aliphatic alcohol, comprises either evaporating solvent from the material after applying water, preferably in the form of a lubricating emulsion in an amount of 2-25 per cent of the solvent-free weight of the material, or by evaporating solvent in an atmosphere of high relative humidity, generally at least 15 per cent, and preferably at least 25 per cent relative humidity. The solvent evaporation in either case is most desirably carried out at 65-100 DEG C. for a period of 1-10 minutes. The filamentary material to be treated is preferably in the form of a tow of total denier of 45,000-1,000,000, with a filament denier of 1.5-50. Methylene chloride, which is evaporated from the filaments, may be recovered and re-used for the spinning process. If the process employed is the one wherein the filaments are treated with the water in the liquid state, it is advantageous to dry the filaments after treatment by evaporating the solvent under the same conditions of high humidity as in the other process. Specification 767,169, [Group IV (c)], is referred to.
GB26419/55A 1954-09-16 1955-09-15 Drying of filamentary materials Expired GB782957A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US456620A US2805490A (en) 1954-09-16 1954-09-16 Drying of filamentary materials

Publications (1)

Publication Number Publication Date
GB782957A true GB782957A (en) 1957-09-18

Family

ID=23813491

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26419/55A Expired GB782957A (en) 1954-09-16 1955-09-15 Drying of filamentary materials

Country Status (3)

Country Link
US (1) US2805490A (en)
BE (1) BE634253A (en)
GB (1) GB782957A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019049086A1 (en) * 2017-09-08 2019-03-14 Acetate International Llc High dpf cellulose acetate tow and process for making

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB434320A (en) * 1934-01-26 1935-08-29 British Bemberg Ltd An improved process for after-treating and drying freshly spun and washed cellulose hydrate artificial silk in wound form
US2161354A (en) * 1936-06-26 1939-06-06 Eastman Kodak Co Method for lubrication of artificial silk
US2557993A (en) * 1948-07-30 1951-06-26 Lockport Cotton Batting Co Process of removing mineral oil from vegetable fibers

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019049086A1 (en) * 2017-09-08 2019-03-14 Acetate International Llc High dpf cellulose acetate tow and process for making
KR20200047672A (en) * 2017-09-08 2020-05-07 아쎄테이트 인터내셔널 엘엘씨 High DPF cellulose acetate tow and manufacturing method
CN111201342A (en) * 2017-09-08 2020-05-26 醋酸纤维国际有限责任公司 High DPF cellulose acetate tow and method of manufacture
EA038548B1 (en) * 2017-09-08 2021-09-14 Эситейт Интернэшнл Ллк High dpf cellulose acetate tow and process for making same

Also Published As

Publication number Publication date
US2805490A (en) 1957-09-10
BE634253A (en)

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