GB738384A - Improvements in or relating to the processing of molten polymers - Google Patents
Improvements in or relating to the processing of molten polymersInfo
- Publication number
- GB738384A GB738384A GB16403/52D GB1640352D GB738384A GB 738384 A GB738384 A GB 738384A GB 16403/52 D GB16403/52 D GB 16403/52D GB 1640352 D GB1640352 D GB 1640352D GB 738384 A GB738384 A GB 738384A
- Authority
- GB
- United Kingdom
- Prior art keywords
- polymer
- vessel
- settling
- bubble
- settling vessel
- 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
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D1/00—Treatment of filament-forming or like material
- D01D1/10—Filtering or de-aerating the spinning solution or melt
- D01D1/103—De-aerating
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/34—Polymerisation in gaseous state
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Artificial Filaments (AREA)
Abstract
<PICT:0738384/IV (a)/1> Bubble-free, fibre-forming polymers are made by preparing a crude polymer in the liquid state by continuous polymerisation or polycondensation at substantially atmospheric pressure, continuously conveying the liquid polymer into a settling vessel, allowing the polymer to stand in the vessel for a period of time not substantially shorter than one hour while the polymer gradually moves from the top of the bottom of the vessel solely under the influence of gravity, whereby gaseous bubbles in the polymer rise to form a separate scummy layer over bubble-free liquid polymer, and continuously drawing off the bubble-free liquid polymer from the bottom of the vessel. Polymers referred to are polyesters and polyamides. Molten polymer from a continuous polymerization tube 10 is pumped via a spinneret 13 into a heated settling vessel 11 to form a pool of polymer the upper level of which may be automatically regulated. Bubbles rising to the top are carried away either by passing a stream of inert gas over the pool or by applying vacuum. Polymer from the bottom of vessel 11 is pumped to spinnerets 17. In modifications (1) the settling vessel 11 is elongated whereby further polymerization occurs concurrently with the settling (2) one settling vessel is fed from a plurality of polymerization tubes.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT738384X | 1951-06-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB738384A true GB738384A (en) | 1955-10-12 |
Family
ID=11315401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB16403/52D Expired GB738384A (en) | 1951-06-15 | 1952-06-13 | Improvements in or relating to the processing of molten polymers |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE511948A (en) |
| FR (1) | FR1102068A (en) |
| GB (1) | GB738384A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103422179A (en) * | 2012-05-16 | 2013-12-04 | 中国石油化工股份有限公司 | Carbon fiber spinning solution de-bubbling method |
-
0
- BE BE511948D patent/BE511948A/xx unknown
-
1952
- 1952-05-30 FR FR1102068D patent/FR1102068A/en not_active Expired
- 1952-06-13 GB GB16403/52D patent/GB738384A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103422179A (en) * | 2012-05-16 | 2013-12-04 | 中国石油化工股份有限公司 | Carbon fiber spinning solution de-bubbling method |
| CN103422179B (en) * | 2012-05-16 | 2016-04-13 | 中国石油化工股份有限公司 | The defoaming method of carbon fiber spinning primary fluid |
Also Published As
| Publication number | Publication date |
|---|---|
| BE511948A (en) | |
| FR1102068A (en) | 1955-10-17 |
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