GB920480A - Process for recovering the hydrocarbon solvent from a polymer solution - Google Patents
Process for recovering the hydrocarbon solvent from a polymer solutionInfo
- Publication number
- GB920480A GB920480A GB2742461A GB2742461A GB920480A GB 920480 A GB920480 A GB 920480A GB 2742461 A GB2742461 A GB 2742461A GB 2742461 A GB2742461 A GB 2742461A GB 920480 A GB920480 A GB 920480A
- Authority
- GB
- United Kingdom
- Prior art keywords
- water
- thread
- solution
- column
- polymer
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
- C08C2/00—Treatment of rubber solutions
- C08C2/06—Wining of rubber from solutions
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
<PICT:0920480/III/1> Hydrocarbon solvent is removed from a solution of olefin polymers which are solid at 80 DEG C. by introducing a thread of the solution into the lower part of a column of water, the temperature of the water and the diameter of the thread being so selected that the solvent evaporates as the thread is divided into pieces and the polymer rises towards the surface of the water. Specified solvents are heptane, cyclohexane, benzene and toluene. Referring to Fig. 1, the polymer solution is fed through nozzle 2 into column 5 which contains hot water entering through line 3 and kept hot by live steam through 11. Freed solvent and water vapours are condensed in condenser 11 and separated in decanter 12. The polymer floats on the water and is removed via channel 7 by extractor 8.ALSO:Hydrocarbon solvent is removed from a solution of olefin polymers which are solid at 80 DEG C. by introducing a thread of the solution into the lower part of a column of water, the temperature of the water and the diameter of the thread being so selected that the solvent evaporates as the thread is divided into pieces and the polymer rises towards the surface of the water. Specified olefin polymers are cis1,4-polybutadiene, polypropylene, polybutene, polystyrene, and copolymers of ethylene with propylene and/or butene. Specified solvents are heptane, cyclohexane, benzene and toluene. An apparatus for this solvent recovery is described which comprises a solution inlet nozzle in the lower part of a water column, the top of the column widening and equipped with an overflow channel at the latter end of which there is an air seal through which polymer clots may be withdrawn.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT1337260 | 1960-07-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB920480A true GB920480A (en) | 1963-03-06 |
Family
ID=11144401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2742461A Expired GB920480A (en) | 1960-07-28 | 1961-07-28 | Process for recovering the hydrocarbon solvent from a polymer solution |
Country Status (3)
| Country | Link |
|---|---|
| BE (1) | BE606613A (en) |
| DE (1) | DE1179375B (en) |
| GB (1) | GB920480A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55147504A (en) * | 1979-05-08 | 1980-11-17 | Mo I Tonkoj Khim Technologii | Device for removing residual solvent from polymer pieces |
-
0
- BE BE606613D patent/BE606613A/xx unknown
-
1961
- 1961-07-25 DE DEM49803A patent/DE1179375B/en active Pending
- 1961-07-28 GB GB2742461A patent/GB920480A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BE606613A (en) | |
| DE1179375B (en) | 1964-10-08 |
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