GB2016472A – Film and fibre forming solutions of cellulose derivatives
– Google Patents
GB2016472A – Film and fibre forming solutions of cellulose derivatives
– Google Patents
Film and fibre forming solutions of cellulose derivatives
Info
Publication number
GB2016472A
GB2016472A
GB7906014A
GB7906014A
GB2016472A
GB 2016472 A
GB2016472 A
GB 2016472A
GB 7906014 A
GB7906014 A
GB 7906014A
GB 7906014 A
GB7906014 A
GB 7906014A
GB 2016472 A
GB2016472 A
GB 2016472A
Authority
GB
United Kingdom
Prior art keywords
cellulose
cellulose derivatives
derivative
film
solutions
Prior art date
1978-02-24
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.)
Granted
Application number
GB7906014A
Other versions
GB2016472B
(en
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.)
SNIA Viscosa SpA
Original Assignee
SNIA Viscosa SpA
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.)
1978-02-24
Filing date
1979-02-20
Publication date
1979-09-26
1978-02-24
Priority claimed from IT20540/78A
external-priority
patent/IT1192247B/en
1978-03-31
Priority claimed from IT2184478A
external-priority
patent/IT7821844D0/en
1979-02-20
Application filed by SNIA Viscosa SpA
filed
Critical
SNIA Viscosa SpA
1979-09-26
Publication of GB2016472A
publication
Critical
patent/GB2016472A/en
1982-09-02
Application granted
granted
Critical
1982-09-02
Publication of GB2016472B
publication
Critical
patent/GB2016472B/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
C—CHEMISTRY; METALLURGY
C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
C08J3/00—Processes of treating or compounding macromolecular substances
C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
C08J3/09—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in organic liquids
C08J3/091—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in organic liquids characterised by the chemical constitution of the organic liquid
C08J3/096—Nitrogen containing compounds
C—CHEMISTRY; METALLURGY
C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
C08B1/00—Preparatory treatment of cellulose for making derivatives thereof, e.g. pre-treatment, pre-soaking, activation
C08B1/003—Preparation of cellulose solutions, i.e. dopes, with different possible solvents, e.g. ionic liquids
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
C—CHEMISTRY; METALLURGY
C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
C08J2301/00—Characterised by the use of cellulose, modified cellulose or cellulose derivatives
C08J2301/08—Cellulose derivatives
C08J2301/26—Cellulose ethers
C08J2301/28—Alkyl ethers
Abstract
A process for the preparation of solutions of cellulose derivatives from which formed bodies, such as fibres or films, of regenerated cellulose can be obtained by coagulation and regeneration, e.g. by wet spinning comprises transforming the cellulose into a methylol derivative containing more than 2 units of formaldehyde per anhydroglucosidic unit, which derivative is soluble in organic solvents of the class consisting of polar aprotic solvents constituted by N-substituted amides pyridine and formamide. The methylol derivative is prepared by treating cellulose with paraformaldehyde and dimethylsulphoxide. The methylol derivative is then dissolved in one of the aforesaid solvents, preferably dimethylformamide or dimethylacetamide, to provide spinnable viscous solutions from which formed bodies can be obtained, e.g. by spinning in an aqueous alkaline bath.
GB7906014A
1978-02-24
1979-02-20
Film and fibre forming solutions fo cellulose derivatives
Expired
GB2016472B
(en)
Applications Claiming Priority (2)
Application Number
Priority Date
Filing Date
Title
IT20540/78A
IT1192247B
(en)
1978-02-24
1978-02-24
PROCEDURE FOR THE PREPARATION OF COAGULABLE AND FILABLE CELLULOSE DERIVATIVES WITH CELLULOSE REGENERATION
IT2184478A
IT7821844D0
(en)
1978-03-31
1978-03-31
PERFECTION PROCEDURE FOR THE PREPARATION OF SOLUTIONS OF COAGULABLE AND SPINABLE CELLULOSE DERIVATIVES WITH REGENERATION OF THE CELLULOSE ITSELF.
Publications (2)
Publication Number
Publication Date
GB2016472A
true
GB2016472A
(en)
1979-09-26
GB2016472B
GB2016472B
(en)
1982-09-02
Family
ID=26327572
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB7906014A
Expired
GB2016472B
(en)
1978-02-24
1979-02-20
Film and fibre forming solutions fo cellulose derivatives
Country Status (5)
Country
Link
JP
(1)
JPS54126287A
(en)
CA
(1)
CA1110009A
(en)
DE
(1)
DE2907408A1
(en)
FR
(1)
FR2418283A1
(en)
GB
(1)
GB2016472B
(en)
Families Citing this family (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
IT1112577B
(en)
*
1979-04-24
1986-01-20
Snia Viscosa
PROCESS PROCESSING FOR THE PREPARATION OF BODIES FORMED OF CELLULOSE REGENERATED FROM SOLUTIONS OF CELLULOSE DERIVATIVES IN ORGANIC SOLVENTS
1979
1979-02-20
GB
GB7906014A
patent/GB2016472B/en
not_active
Expired
1979-02-22
JP
JP2017879A
patent/JPS54126287A/en
active
Pending
1979-02-23
FR
FR7904734A
patent/FR2418283A1/en
not_active
Withdrawn
1979-02-23
CA
CA322,225A
patent/CA1110009A/en
not_active
Expired
1979-02-24
DE
DE19792907408
patent/DE2907408A1/en
not_active
Withdrawn
Also Published As
Publication number
Publication date
DE2907408A1
(en)
1979-09-06
JPS54126287A
(en)
1979-10-02
GB2016472B
(en)
1982-09-02
CA1110009A
(en)
1981-10-06
FR2418283A1
(en)
1979-09-21
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Legal Events
Date
Code
Title
Description
1983-11-30
PCNP
Patent ceased through non-payment of renewal fee
