ES458124A1 - A procedure for the preparation of a microporosa huge fiber. (Machine-translation by Google Translate, not legally binding) - Google Patents
A procedure for the preparation of a microporosa huge fiber. (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES458124A1 ES458124A1 ES458124A ES458124A ES458124A1 ES 458124 A1 ES458124 A1 ES 458124A1 ES 458124 A ES458124 A ES 458124A ES 458124 A ES458124 A ES 458124A ES 458124 A1 ES458124 A1 ES 458124A1
- Authority
- ES
- Spain
- Prior art keywords
- fiber
- translation
- preparation
- machine
- legally binding
- 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
- 239000000835 fiber Substances 0.000 title abstract 4
- 238000000034 method Methods 0.000 title abstract 3
- 238000002360 preparation method Methods 0.000 title abstract 2
- 239000004698 Polyethylene Substances 0.000 abstract 3
- 150000002148 esters Chemical class 0.000 abstract 3
- 239000007788 liquid Substances 0.000 abstract 3
- -1 polyethylene Polymers 0.000 abstract 3
- 229920000573 polyethylene Polymers 0.000 abstract 3
- 239000012510 hollow fiber Substances 0.000 abstract 2
- 238000009835 boiling Methods 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 238000000354 decomposition reaction Methods 0.000 abstract 1
- 238000007710 freezing Methods 0.000 abstract 1
- 230000008014 freezing Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 238000009987 spinning Methods 0.000 abstract 1
Landscapes
- Artificial Filaments (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
A process for the preparation of a microporous hollow fiber in which the porosity is contiguous, and said fiber is constituted essentially by polyethylene, which process comprises: (a) heating a polyethylene/ester combination at a temperature to which it is a liquid homogeneous but lower than the boiling or decomposition temperature of said combination and extruding it from a row in the form of a hollow fiber; (b) cooling the extrudate leaving the spinneret to solidify it while maintaining a sufficient tension on the forming fiber to reach a stretch ratio of 1.0/1 to 40/1; (c) at a temperature above the melting point of the ester but at least 10ยบ below the cloud point of said homogeneous liquid. (d) contacting the stretched fiber after spinning with a liquid medium separating the ester at an intermediate temperature between the freezing point of the medium and the pour point of the polyethylene. (Machine-translation by Google Translate, not legally binding)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES458124A ES458124A1 (en) | 1977-04-22 | 1977-04-22 | A procedure for the preparation of a microporosa huge fiber. (Machine-translation by Google Translate, not legally binding) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES458124A ES458124A1 (en) | 1977-04-22 | 1977-04-22 | A procedure for the preparation of a microporosa huge fiber. (Machine-translation by Google Translate, not legally binding) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES458124A1 true ES458124A1 (en) | 1978-08-16 |
Family
ID=8473618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES458124A Expired ES458124A1 (en) | 1977-04-22 | 1977-04-22 | A procedure for the preparation of a microporosa huge fiber. (Machine-translation by Google Translate, not legally binding) |
Country Status (1)
| Country | Link |
|---|---|
| ES (1) | ES458124A1 (en) |
-
1977
- 1977-04-22 ES ES458124A patent/ES458124A1/en not_active Expired
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