CH609990A5 - Process for degassing polymers and copolymers prepared by bulk polymerisation of a vinyl chloride-based monomer composition - Google Patents
Process for degassing polymers and copolymers prepared by bulk polymerisation of a vinyl chloride-based monomer compositionInfo
- Publication number
- CH609990A5 CH609990A5 CH384476A CH384476A CH609990A5 CH 609990 A5 CH609990 A5 CH 609990A5 CH 384476 A CH384476 A CH 384476A CH 384476 A CH384476 A CH 384476A CH 609990 A5 CH609990 A5 CH 609990A5
- Authority
- CH
- Switzerland
- Prior art keywords
- vinyl chloride
- ppm
- monomer composition
- polymerisate
- based monomer
- Prior art date
Links
Classifications
-
- 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
- C08F6/00—Post-polymerisation treatments
- C08F6/001—Removal of residual monomers by physical means
- C08F6/005—Removal of residual monomers by physical means from solid polymers
Landscapes
- 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)
Abstract
While the polymerisate is kept stirred, the monomer composition to be removed is brought from the polymerisation pressure to a pressure lower than 120 mm of mercury, the polymerisate is taken to or maintained at a temperature of at least 70 DEG C and lower than the temperature of onset of degradation of the polymer or of the copolymer, and these pressure and temperature conditions are maintained appreciably until the degassing stops, the polymerisate being brought into contact with a quantity of water representing 0.05 to 0.5 % of its weight after the residual content of vinyl chloride monomer in the polymer or copolymer has been lowered below 2000 ppm. Before being put in the open air, the polymers and copolymers obtained have a residual vinyl chloride monomer content lower than 50 ppm and generally lower than 20 ppm and capable of being lowered as far as 1 ppm.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR7509798A FR2305446A1 (en) | 1975-03-28 | 1975-03-28 | IMPROVED PROCESS FOR DEGASING POLYMERS AND COPOLYMERS PREPARED BY MASS POLYMERIZATION OF A MONOMERIC COMPOSITION BASED ON VINYL CHLORIDE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH609990A5 true CH609990A5 (en) | 1979-03-30 |
Family
ID=9153250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH384476A CH609990A5 (en) | 1975-03-28 | 1976-03-26 | Process for degassing polymers and copolymers prepared by bulk polymerisation of a vinyl chloride-based monomer composition |
Country Status (22)
| Country | Link |
|---|---|
| JP (1) | JPS51119784A (en) |
| AR (1) | AR207812A1 (en) |
| AT (1) | AT348255B (en) |
| BE (1) | BE840031A (en) |
| BR (1) | BR7601836A (en) |
| CA (1) | CA1109193A (en) |
| CH (1) | CH609990A5 (en) |
| DE (1) | DE2612748C3 (en) |
| DK (1) | DK131576A (en) |
| ES (1) | ES446382A1 (en) |
| FI (1) | FI61035C (en) |
| FR (1) | FR2305446A1 (en) |
| GB (1) | GB1506981A (en) |
| IE (1) | IE42533B1 (en) |
| IN (1) | IN144657B (en) |
| IT (1) | IT1057398B (en) |
| LU (1) | LU74649A1 (en) |
| NL (1) | NL165758C (en) |
| NO (1) | NO144968C (en) |
| SE (1) | SE426493B (en) |
| SU (1) | SU656530A3 (en) |
| TR (1) | TR19439A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1547614A (en) * | 1975-09-15 | 1979-06-27 | Tenneco Chem | Removing residual monomer from vinyl chloryde polymers |
| DE2653256C2 (en) * | 1976-11-24 | 1983-02-17 | Hoechst Ag, 6000 Frankfurt | Process for lowering the residual monomer content of vinyl chloride polymers |
| FR2489826A1 (en) * | 1980-09-08 | 1982-03-12 | Rhone Poulenc Ind | PROCESS FOR DEGASSING MASS-PREPARED VINYL CHLORIDE POLYMERS AND COPOLYMERS AND POLYMERS AND COPOLYMERS HAVING IMPROVED IMPROVED SCREENABILITY |
| FR2516521A1 (en) * | 1981-11-13 | 1983-05-20 | Chloe Chemie | Removing residual vinyl chloride monomer from polymerisation system - followed by adding water contg. nonionic surfactant to polymer |
| WO2023068142A1 (en) * | 2021-10-21 | 2023-04-27 | 株式会社Ｄｎｐファインケミカル | Ink composition, ink set, recording method, method for producing recorded matter, and recorded matter |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1096973A (en) * | 1966-05-16 | 1967-12-29 | Shell Int Research | The manufacture of styrene polymers, and the resulting polymers |
| DE1816350A1 (en) * | 1967-12-26 | 1969-10-16 | Union Carbide Corp | Removal of volatiles from a viscous polymer solution |
| US3668161A (en) * | 1969-06-09 | 1972-06-06 | Union Carbide Corp | Devolatilization of liquid polymer compositions |
| IT989178B (en) * | 1972-07-19 | 1975-05-20 | Solvay | PROCEDURE TO ELIMINATE RESIDUAL VINYL CHLORIDE PRESENT IN POLI MERI |
| NO752264L (en) * | 1974-08-29 | 1976-03-02 | Huels Chemische Werke Ag |
-
1975
- 1975-03-28 FR FR7509798A patent/FR2305446A1/en active Granted
-
1976
- 1976-01-01 AR AR262672A patent/AR207812A1/en active
- 1976-02-27 SE SE7602693A patent/SE426493B/en not_active IP Right Cessation
- 1976-03-24 FI FI760782A patent/FI61035C/en not_active IP Right Cessation
- 1976-03-24 JP JP51032370A patent/JPS51119784A/en active Granted
- 1976-03-25 DK DK131576A patent/DK131576A/en not_active Application Discontinuation
- 1976-03-25 DE DE2612748A patent/DE2612748C3/en not_active Expired
- 1976-03-25 BE BE165561A patent/BE840031A/en not_active IP Right Cessation
- 1976-03-25 NO NO761043A patent/NO144968C/en unknown
- 1976-03-26 NL NL7603198.A patent/NL165758C/en not_active IP Right Cessation
- 1976-03-26 SU SU762338311A patent/SU656530A3/en active
- 1976-03-26 LU LU74649A patent/LU74649A1/xx unknown
- 1976-03-26 GB GB12310/76A patent/GB1506981A/en not_active Expired
- 1976-03-26 IE IE640/76A patent/IE42533B1/en unknown
- 1976-03-26 TR TR19439A patent/TR19439A/en unknown
- 1976-03-26 AT AT224976A patent/AT348255B/en not_active IP Right Cessation
- 1976-03-26 IT IT48739/76A patent/IT1057398B/en active
- 1976-03-26 CA CA248,892A patent/CA1109193A/en not_active Expired
- 1976-03-26 BR BR7601836A patent/BR7601836A/en unknown
- 1976-03-26 CH CH384476A patent/CH609990A5/en not_active IP Right Cessation
- 1976-03-26 ES ES446382A patent/ES446382A1/en not_active Expired
- 1976-03-27 IN IN532/CAL/1976A patent/IN144657B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| LU74649A1 (en) | 1977-01-28 |
| DE2612748B2 (en) | 1980-03-20 |
| BE840031A (en) | 1976-09-27 |
| NO144968C (en) | 1981-12-16 |
| NL165758C (en) | 1981-05-15 |
| SU656530A3 (en) | 1979-04-05 |
| FI61035C (en) | 1982-05-10 |
| IE42533B1 (en) | 1980-08-27 |
| ES446382A1 (en) | 1977-06-16 |
| AT348255B (en) | 1979-02-12 |
| IT1057398B (en) | 1982-03-10 |
| DE2612748C3 (en) | 1980-11-13 |
| FR2305446B1 (en) | 1979-02-16 |
| SE7602693L (en) | 1976-09-29 |
| NL165758B (en) | 1980-12-15 |
| FI61035B (en) | 1982-01-29 |
| BR7601836A (en) | 1976-09-28 |
| GB1506981A (en) | 1978-04-12 |
| NL7603198A (en) | 1976-09-30 |
| IE42533L (en) | 1976-09-28 |
| NO144968B (en) | 1981-09-07 |
| CA1109193A (en) | 1981-09-15 |
| JPS558007B2 (en) | 1980-03-01 |
| NO761043L (en) | 1976-09-29 |
| TR19439A (en) | 1979-03-20 |
| IN144657B (en) | 1978-06-03 |
| FR2305446A1 (en) | 1976-10-22 |
| FI760782A (en) | 1976-09-29 |
| DK131576A (en) | 1976-09-29 |
| AR207812A1 (en) | 1976-10-29 |
| ATA224976A (en) | 1978-06-15 |
| SE426493B (en) | 1983-01-24 |
| JPS51119784A (en) | 1976-10-20 |
| DE2612748A1 (en) | 1976-10-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUE | Assignment |
Owner name: CHLOE CHIMIE |
|
| PL | Patent ceased |