GB1232186A – – Google Patents
GB1232186A – – Google Patents
Info
Publication number
GB1232186A
GB1232186A
GB1232186DA
GB1232186A
GB 1232186 A
GB1232186 A
GB 1232186A
GB 1232186D A
GB1232186D A
GB 1232186DA
GB 1232186 A
GB1232186 A
GB 1232186A
Authority
GB
United Kingdom
Prior art keywords
filaments
dehydrogenating
range
dec
temperature
Prior art date
1968-12-20
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
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.)
1968-12-20
Filing date
1969-12-19
Publication date
1971-05-19
1969-12-19
Application filed
filed
Critical
1971-05-19
Publication of GB1232186A
publication
Critical
patent/GB1232186A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
D01F9/00—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments
D01F9/08—Artificial filaments or the like of other substances; Manufacture thereof; Apparatus specially adapted for the manufacture of carbon filaments of inorganic material
D01F9/12—Carbon filaments; Apparatus specially adapted for the manufacture thereof
D01F9/14—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments
D01F9/20—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products
D01F9/21—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
D01F9/22—Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyacrylonitriles
Abstract
1,232,186. Polyacrylonitrile filaments. SIGRI ELEKTROGRAPHIT G.m.b.H. 19 Dec., 1969 [20 Dec., 1968], No. 62117/69. Heading B5B. [Also in Division C1] The suitability of polymeric synthetic filaments of non-cellulosic origin which are capable of undergoing cross-linking when heating in the presence of a dehydrogenating agent, for carbonization is improved by thus heating the filaments within a temperature range of 175- 300‹ C., while tensioning the filaments; the temperature of the filaments being increased within the said range at a rate of 3-35‹ C. per hour. The filaments may be heated in a stream of air, or of modified air, which contains either up to 40% or up to 10% of oxygen by volume; chlorine or liquid sulphur may also be used as dehydrogenating agents. The dehydrogenating agent used may be supplemented with other dehydrogenating agents, for example boric acid, ammonium sulphate, and ammonium phosphate; and a radical producer for example α- nitrophenol or parathiocresol or a radical attracter e.g. hydroxylamine or urea. In a preferred embodiment, polyacrylonitrile filaments were pulled through a furnace with a temperature profile such that a rate of increase of 35‹ C. per hour was obtained within the range 175-300‹ C. The filament obtained was black and flexible, having an elasticity modulus of 7À9 x 10
GB1232186D
1968-12-20
1969-12-19
Expired
GB1232186A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
DE19681816170
DE1816170A1
(en)
1968-12-20
1968-12-20
Process for the production of carbon or graphite fibers
Publications (1)
Publication Number
Publication Date
GB1232186A
true
GB1232186A
(en)
1971-05-19
Family
ID=5716975
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB1232186D
Expired
GB1232186A
(en)
1968-12-20
1969-12-19
Country Status (8)
Country
Link
AT
(1)
AT295023B
(en)
BE
(1)
BE743458A
(en)
CH
(1)
CH515853A
(en)
DE
(1)
DE1816170A1
(en)
FR
(1)
FR2026637A1
(en)
GB
(1)
GB1232186A
(en)
NL
(1)
NL6918783A
(en)
NO
(1)
NO124306B
(en)
Families Citing this family (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
JPS602408B2
(en)
*
1977-08-17
1985-01-21
東邦ベスロン株式会社
Carbon fiber with excellent heat and oxidation resistance
1968
1968-12-20
DE
DE19681816170
patent/DE1816170A1/en
not_active
Withdrawn
1969
1969-12-09
CH
CH1828369A
patent/CH515853A/en
not_active
IP Right Cessation
1969-12-10
NO
NO487569A
patent/NO124306B/no
unknown
1969-12-10
AT
AT1149969A
patent/AT295023B/en
not_active
IP Right Cessation
1969-12-11
FR
FR6942969A
patent/FR2026637A1/fr
not_active
Withdrawn
1969-12-15
NL
NL6918783A
patent/NL6918783A/xx
unknown
1969-12-19
GB
GB1232186D
patent/GB1232186A/en
not_active
Expired
1969-12-19
BE
BE743458D
patent/BE743458A/xx
unknown
Also Published As
Publication number
Publication date
DE1816170A1
(en)
1970-09-17
BE743458A
(en)
1970-06-19
NL6918783A
(en)
1970-06-23
AT295023B
(en)
1971-12-27
CH515853A
(en)
1971-11-30
FR2026637A1
(en)
1970-09-18
NO124306B
(en)
1972-04-04
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(en)
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Process for stretching filaments acsa applicazioni chimiche s.p.a.
Legal Events
Date
Code
Title
Description
1971-09-29
PS
Patent sealed
1979-07-18
PCNP
Patent ceased through non-payment of renewal fee
