DE3380593D1 - Process for preparing polypiperazinamide anisotropic membranes - Google Patents
Process for preparing polypiperazinamide anisotropic membranesInfo
- Publication number
- DE3380593D1 DE3380593D1 DE8383303855T DE3380593T DE3380593D1 DE 3380593 D1 DE3380593 D1 DE 3380593D1 DE 8383303855 T DE8383303855 T DE 8383303855T DE 3380593 T DE3380593 T DE 3380593T DE 3380593 D1 DE3380593 D1 DE 3380593D1
- Authority
- DE
- Germany
- Prior art keywords
- polypiperazinamid
- preparing
- anisotropic membranes
- anisotropic
- membranes
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/56—Polyamides, e.g. polyester-amides
-
- 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
- D01D5/24—Formation of filaments, threads, or the like with a hollow structure; Spinnerette packs therefor
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Artificial Filaments (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT22179/82A IT1153101B (it) | 1982-07-01 | 1982-07-01 | Procedimento per la preparazione di corpi formati anisotropi a base di poli-piperazinammidi |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3380593D1 true DE3380593D1 (de) | 1989-10-26 |
Family
ID=11192663
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE8383303855T Expired DE3380593D1 (de) | 1982-07-01 | 1983-07-01 | Process for preparing polypiperazinamide anisotropic membranes |
Country Status (7)
Country | Link |
---|---|
US (1) | US4560522A (de) |
EP (1) | EP0099686B1 (de) |
JP (1) | JPS5932905A (de) |
CA (1) | CA1251311A (de) |
DE (1) | DE3380593D1 (de) |
IL (1) | IL69113A0 (de) |
IT (1) | IT1153101B (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62141110A (ja) * | 1985-12-11 | 1987-06-24 | Canon Inc | ゲル繊維の製造方法 |
IT1222627B (it) * | 1987-09-09 | 1990-09-05 | Separem Spa | Procedimento per la preparazione di membrane per osmosi inversa e membrane ottenute con tale procedimento |
IT1241107B (it) * | 1990-04-11 | 1993-12-29 | Separem Spa | Membrane da osmosi inversa a base di polipiperazinammide e procedimento di post-trattamento per la loro preparazione |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3615024A (en) * | 1968-08-26 | 1971-10-26 | Amicon Corp | High flow membrane |
US3687842A (en) * | 1969-07-08 | 1972-08-29 | Consiglio Nazionale Ricerche | Osmosis process |
US3551331A (en) * | 1969-09-22 | 1970-12-29 | Du Pont | Reverse osmosis separations using a treated polyamide membrane |
US3710945A (en) * | 1969-11-26 | 1973-01-16 | Du Pont | Preservation of polyamidic membranes |
BE793504A (fr) * | 1971-12-30 | 1973-06-29 | Montedison Spa | Membranes anisotropes de retro-osmose et leur procede de preparation |
JPS5223346B2 (de) * | 1972-08-30 | 1977-06-23 | ||
JPS50107210A (de) * | 1974-02-06 | 1975-08-23 | ||
US4087388A (en) * | 1976-10-21 | 1978-05-02 | E. I. Du Pont De Nemours And Company | Process of preparing a permselective membrane |
JPS6028290B2 (ja) * | 1977-05-17 | 1985-07-04 | 日産化学工業株式会社 | ポリピペラジンテレフタルアミドの液晶調整方法 |
DK170416B1 (da) * | 1978-05-15 | 1995-08-28 | Pall Corp | Mikroporøs, hydrofil, hindefri, alkoholuopløselig polyamidharpiksmembran, fremgangsmåde til dens fremstilling, anvendelse af membranen i filterelementer samt harpiksstøbeopløsning til brug ved fremgangsmåden |
JPS567723A (en) * | 1979-06-28 | 1981-01-27 | Takeda Chem Ind Ltd | Fine granular preparation |
-
1982
- 1982-07-01 IT IT22179/82A patent/IT1153101B/it active
-
1983
- 1983-06-29 CA CA000431421A patent/CA1251311A/en not_active Expired
- 1983-06-29 IL IL69113A patent/IL69113A0/xx not_active IP Right Cessation
- 1983-06-30 US US06/509,655 patent/US4560522A/en not_active Expired - Fee Related
- 1983-07-01 JP JP58118406A patent/JPS5932905A/ja active Granted
- 1983-07-01 DE DE8383303855T patent/DE3380593D1/de not_active Expired
- 1983-07-01 EP EP83303855A patent/EP0099686B1/de not_active Expired
Also Published As
Publication number | Publication date |
---|---|
EP0099686A3 (en) | 1984-12-12 |
IT8222179A0 (it) | 1982-07-01 |
EP0099686B1 (de) | 1989-09-20 |
JPH0410500B2 (de) | 1992-02-25 |
CA1251311A (en) | 1989-03-21 |
EP0099686A2 (de) | 1984-02-01 |
JPS5932905A (ja) | 1984-02-22 |
US4560522A (en) | 1985-12-24 |
IT1153101B (it) | 1987-01-14 |
IL69113A0 (en) | 1983-10-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |