ES395282A3 - Improvements introduced in a procedure to concentrate a thermoplastic polymer. (Machine-translation by Google Translate, not legally binding) - Google Patents
Improvements introduced in a procedure to concentrate a thermoplastic polymer. (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES395282A3 ES395282A3 ES395282A ES395282A ES395282A3 ES 395282 A3 ES395282 A3 ES 395282A3 ES 395282 A ES395282 A ES 395282A ES 395282 A ES395282 A ES 395282A ES 395282 A3 ES395282 A3 ES 395282A3
- Authority
- ES
- Spain
- Prior art keywords
- solution
- polymer
- solvent
- pressure
- translation
- 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
Landscapes
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
Improvements introduced in a process for concentrating a thermoplastic polymer of a solution thereof having no more than 50% by weight of said polymer, whose improvements comprise the steps of (a) rapidly preheating the solution at a temperature of 200 to 350ºC within a period not exceeding 60 minutes and under a pressure at least equal to the autogenous pressure, and (b) subsequently releasing said heated solution in a deflagration chamber maintained at less than 50 lpcm by removal of solvent vaporized therefrom, under from which a concentrated solution of at least 80% by weight of said polymer is obtained, (c) passing said concentrated polymer solution through a heating zone whose pressure at the outlet end is maintained at a lower absolute value at 30 mm hg and at a temperature of 200 to 290ºC and substantially vaporize the solvent of said solution; (d) passing the vapor-liquid mixture leaving said heating zone to a receiving zone maintained at a pressure of 1 to 4 mm hg absolute by removal of vaporized solvent therefrom; and (e) removing the polymer from said receiving zone in molten form essentially free of said solvent. (Machine-translation by Google Translate, not legally binding)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES395282A ES395282A3 (en) | 1971-09-21 | 1971-09-21 | Improvements introduced in a procedure to concentrate a thermoplastic polymer. (Machine-translation by Google Translate, not legally binding) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES395282A ES395282A3 (en) | 1971-09-21 | 1971-09-21 | Improvements introduced in a procedure to concentrate a thermoplastic polymer. (Machine-translation by Google Translate, not legally binding) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES395282A3 true ES395282A3 (en) | 1975-11-01 |
Family
ID=8459194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES395282A Expired ES395282A3 (en) | 1971-09-21 | 1971-09-21 | Improvements introduced in a procedure to concentrate a thermoplastic polymer. (Machine-translation by Google Translate, not legally binding) |
Country Status (1)
| Country | Link |
|---|---|
| ES (1) | ES395282A3 (en) |
-
1971
- 1971-09-21 ES ES395282A patent/ES395282A3/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ES388730A1 (en) | Process for recovering polymers from organic solutions | |
| ES8101255A1 (en) | Process for producing cold and/or heat with use of an absorption cycle | |
| ES8604346A1 (en) | Method of drying a solid and device therefor. | |
| ES447280A1 (en) | Process for continuously removing monomers from an aqueous dispersion of a polymer | |
| GB1470187A (en) | Method and apparatus for purifying gas | |
| ES428415A1 (en) | A continuous procedure to separate at least one hidrocarbon fraction of high definition of a liquid hydrocarbon material. (Machine-translation by Google Translate, not legally binding) | |
| ES395282A3 (en) | Improvements introduced in a procedure to concentrate a thermoplastic polymer. (Machine-translation by Google Translate, not legally binding) | |
| GB771038A (en) | Improvements in method and apparatus for the purification of crystals | |
| ES451182A1 (en) | Process and apparatus for removing volatile components from synthetic resin | |
| GB1073814A (en) | Preparation of diallyl phthalate prepolymers | |
| DE3160230D1 (en) | Preparation of shaped crosslinked materials | |
| JPS5218489A (en) | Process for production of carbon material | |
| ATE11110T1 (en) | DISTILLATIVE FREEZING PROCESS FOR SEPARATING SUBSTANCES WITH CLOSE BOILING POINTS. | |
| US993868A (en) | Process of dehydrating nitric-acid and other vapors. | |
| ES238105A1 (en) | Process for the production of substantially anhydrous and substantially biuret-free urea | |
| ES439110A1 (en) | Plant suitable for use in the production of sugar for reducing the consumption of steam | |
| JPS574925A (en) | Furification of organic solvent | |
| SU123150A1 (en) | The method of obtaining ammonium nitrate under pressure | |
| JPS5778486A (en) | Preparation of meso-phase pitch | |
| GB1059797A (en) | Continuous manufacture of malonic acid dinitrile | |
| ES309589A1 (en) | Continuous procedure for the preparation of superfosforic acid through thermal treatment of orthophosphoric acid. (Machine-translation by Google Translate, not legally binding) | |
| SU72284A1 (en) | Calcium Phosphide Production Method | |
| GB851416A (en) | Improvements in or relating to processes for removing water from raw or activated sludge | |
| GB832293A (en) | A process for concentrating urea solutions | |
| SU534480A2 (en) | Method of cleaning metal phthalocyanines |