GB875069A - Manufacture of shaped articles such as filaments of aromatic polysulphonamides - Google Patents
Manufacture of shaped articles such as filaments of aromatic polysulphonamidesInfo
- Publication number
- GB875069A GB875069A GB3662257A GB3662257A GB875069A GB 875069 A GB875069 A GB 875069A GB 3662257 A GB3662257 A GB 3662257A GB 3662257 A GB3662257 A GB 3662257A GB 875069 A GB875069 A GB 875069A
- Authority
- GB
- United Kingdom
- Prior art keywords
- aqueous solution
- polysulphonamides
- solution
- aromatic
- meta
- 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
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
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/76—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from other polycondensation products
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
In the production of filaments by extruding a solution of an aromatic polysulphonamide into an aqueous coagulating bath of acidity greater than that of the polymer solvent, the coagulating bath comprises an aqueous solution buffered to maintain a substantially constant pH, and the solvent is miscible in all proportions with the coagulating bath liquid. The latter preferably has a pH value of not less than about 5,0 and may be made from an aqueous solution of a weak organic acid in which is dissolved a salt of the acid with a strong base such as caustic soda. The polysulphonamides may be aromatic meta-or para-polysulphonamides prepared from meta-or para-disulphonic acids and diamines such as hexamethylene diamine. In an example, a 25% solution of polyhexamethylenebenzene-meta-disulphonamide in an aqueous solution of 200 grams per litre of caustic soda is spun into an aqueous solution of 100 grams per litre concentration of sodium bicarbonate at 65 DEG C. In another example, the polymer solution is spun into an aqueous solution of acetic acid and sodium acetate having a pH value of about 6,5. Specifications 875,067, 875,068, 875,070 and 875,071 are referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3662257A GB875069A (en) | 1957-11-25 | 1957-11-25 | Manufacture of shaped articles such as filaments of aromatic polysulphonamides |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3662257A GB875069A (en) | 1957-11-25 | 1957-11-25 | Manufacture of shaped articles such as filaments of aromatic polysulphonamides |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB875069A true GB875069A (en) | 1961-08-16 |
Family
ID=10389785
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3662257A Expired GB875069A (en) | 1957-11-25 | 1957-11-25 | Manufacture of shaped articles such as filaments of aromatic polysulphonamides |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB875069A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6837996B2 (en) | 2000-05-23 | 2005-01-04 | Ge Osmonics, Inc. | Polysulfonamide matrices |
| US6987150B2 (en) * | 2000-05-23 | 2006-01-17 | Osmonics, Inc. | Modified sulfonamide polymers |
| US7138058B2 (en) | 2000-05-23 | 2006-11-21 | Ge Osmonics, Inc. | Acid stable membranes for nanofiltration |
-
1957
- 1957-11-25 GB GB3662257A patent/GB875069A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6837996B2 (en) | 2000-05-23 | 2005-01-04 | Ge Osmonics, Inc. | Polysulfonamide matrices |
| US6987150B2 (en) * | 2000-05-23 | 2006-01-17 | Osmonics, Inc. | Modified sulfonamide polymers |
| US7138058B2 (en) | 2000-05-23 | 2006-11-21 | Ge Osmonics, Inc. | Acid stable membranes for nanofiltration |
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