GB1080917A – Process for stretching filaments acsa applicazioni chimiche s.p.a.
– Google Patents
GB1080917A – Process for stretching filaments acsa applicazioni chimiche s.p.a.
– Google Patents
Process for stretching filaments acsa applicazioni chimiche s.p.a.
Info
Publication number
GB1080917A
GB1080917A
GB98001/65A
GB980165A
GB1080917A
GB 1080917 A
GB1080917 A
GB 1080917A
GB 98001/65 A
GB98001/65 A
GB 98001/65A
GB 980165 A
GB980165 A
GB 980165A
GB 1080917 A
GB1080917 A
GB 1080917A
Authority
GB
United Kingdom
Prior art keywords
nano
kno
filaments
per cent
stretching
Prior art date
1964-03-18
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
GB98001/65A
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.)
1964-03-18
Filing date
1965-03-08
Publication date
1967-08-31
1965-03-08
Application filed
filed
Critical
1967-08-31
Publication of GB1080917A
publication
Critical
patent/GB1080917A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
D—TEXTILES; PAPER
D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
D02J1/223—Stretching in a liquid bath
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
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
D01F6/28—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
D01F6/38—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds comprising unsaturated nitriles as the major constituent
Abstract
1,080,917. Stretching filaments of acrylonitrile polymers. ACSA APPLICAZIONI CHIMICHE S.p.A. March 8, 1965 [March 18, 1964], No. 9801/65. Heading B5B. Filaments of acrylonitrile polymer are stretched in an anhydrous bath consisting of at least one molten inorganic water-soluble salt at a temperature between 140‹ and 200‹ C., preferably between 150‹ and 170‹ C. The term ” acrylonitrile polymer ” is defined to include polyacrylonitrile as homopolymer or copolymer (for example block or graft copolymer) or mixtures thereof which contain at least 85 weight per cent of polyacrylonitrile and up to 15 weight per cent of one or more polymerized and compatible ethylenically unsaturated monomers; the term ” filaments ” is defined to include monofilaments, fibres and tow obtained by wet or dry spinning. The bath preferably consists of a mixture of salts having a melting point not higher than 160‹ C. and may consist of binary and ternary mixtures of alkali metal nitrates and/or nitrites, for example binary mixtures of KNO 3 -NaNO 2 , KNO 2 -NaNO 3 and KNO 3 -LiNO 3 , and ternary mixtures of KNO 3 -NaNO 3 -NaNO 2 and If desired, the stretching may be repeated one or more times at the same or at different temperatures. Filaments of low denier, for example of ¢ denier, may be obtained. Examples describe the stretching of tows obtained by wet spinning a solution of a copolymer of 93 weight per cent of acrylonitrile and 7 weight per cent of vinyl acetate in dimethylacetamide, the molten salt bath consisting of a binary mixture of KNO 3 and NaNO 2 in a weight ratio of 60: 40 (Example 1); a binary mixture of KNO 2 and NaNO 3 in a weight ratio of 50: 50 (Example 2); and a ternary mixture of KNO 3 , NaNO 3 and NaNO 2 in a weight ratio of 57: 3: 40 (Example 3).
GB98001/65A
1964-03-18
1965-03-08
Process for stretching filaments acsa applicazioni chimiche s.p.a.
Expired
GB1080917A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
IT599564
1964-03-18
Publications (1)
Publication Number
Publication Date
GB1080917A
true
GB1080917A
(en)
1967-08-31
Family
ID=11120840
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB98001/65A
Expired
GB1080917A
(en)
1964-03-18
1965-03-08
Process for stretching filaments acsa applicazioni chimiche s.p.a.
Country Status (6)
Country
Link
BE
(1)
BE661307A
(en)
ES
(1)
ES311068A1
(en)
FR
(1)
FR1426683A
(en)
GB
(1)
GB1080917A
(en)
NL
(1)
NL6503104A
(en)
SE
(1)
SE314470B
(en)
1965
1965-03-08
GB
GB98001/65A
patent/GB1080917A/en
not_active
Expired
1965-03-11
NL
NL6503104A
patent/NL6503104A/xx
unknown
1965-03-15
FR
FR9188A
patent/FR1426683A/en
not_active
Expired
1965-03-18
ES
ES0311068A
patent/ES311068A1/en
not_active
Expired
1965-03-18
SE
SE3501/65A
patent/SE314470B/xx
unknown
1965-03-18
BE
BE661307A
patent/BE661307A/xx
unknown
Also Published As
Publication number
Publication date
ES311068A1
(en)
1965-09-01
BE661307A
(en)
1965-09-20
NL6503104A
(en)
1965-09-20
SE314470B
(en)
1969-09-08
FR1426683A
(en)
1966-01-28
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