ES442034A1 - Low-emission removal of vinyl chloride from polymers of vinyl chloride - Google Patents
Low-emission removal of vinyl chloride from polymers of vinyl chlorideInfo
- Publication number
- ES442034A1 ES442034A1 ES442034A ES442034A ES442034A1 ES 442034 A1 ES442034 A1 ES 442034A1 ES 442034 A ES442034 A ES 442034A ES 442034 A ES442034 A ES 442034A ES 442034 A1 ES442034 A1 ES 442034A1
- Authority
- ES
- Spain
- Prior art keywords
- vinyl chloride
- wet material
- polymers
- polymer dispersions
- polymerization
- 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
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F6/00—Post-polymerisation treatments
- C08F6/14—Treatment of polymer emulsions
- C08F6/16—Purification
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
Procedure for the poor removal of vinyl chloride fumes out of vinyl chloride polymers, which have been obtained in aqueous dispersion, characterized in that after polymerization the aqueous polymer dispersions are transferred directly or in a mechanically dehydrated state, such as wet material, to desorption plants connected behind the polymerization reactors and hermetically sealed from the surrounding atmosphere, consisting essentially of one or more vessels, if desired stirred, directly or indirectly heatable, as well as operated continuously or in batches, which, if appropriate, contain groups of irrigation and/or drop currents to form thin dispersion layers, and in which, under depression, normal pressure or overpressure, and temperatures of aqueous polymer dispersions or the wet material obtained from these after d e a mechanical pre-dehydration between 40 and 140ºC the vinyl chloride that leaves the polymer towards the steam room and, if necessary, the comonomers are evacuated by rinsing of water vapor formed or conducted through, if overheated, in known way to condensation facilities, where the separation in water and monomers is carried out. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19742450464 DE2450464A1 (en) | 1974-10-24 | 1974-10-24 | PROCESS FOR LOW EMISSIONS REMOVAL OF VINYL CHLORIDE FROM POLYMERIZES OF VINYL CHLORIDE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES442034A1 true ES442034A1 (en) | 1977-03-16 |
Family
ID=5929017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES442034A Expired ES442034A1 (en) | 1974-10-24 | 1975-10-23 | Low-emission removal of vinyl chloride from polymers of vinyl chloride |
Country Status (8)
| Country | Link |
|---|---|
| JP (1) | JPS5165189A (en) |
| BE (1) | BE834784A (en) |
| DE (1) | DE2450464A1 (en) |
| ES (1) | ES442034A1 (en) |
| FR (1) | FR2288751A1 (en) |
| GB (1) | GB1519227A (en) |
| IT (1) | IT1043472B (en) |
| NL (1) | NL7512228A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2521780C2 (en) * | 1975-05-16 | 1982-10-21 | Hoechst Ag, 6000 Frankfurt | Process for the continuous removal of monomers from an aqueous dispersion of a polymer |
| US3985136A (en) * | 1975-09-16 | 1976-10-12 | Johnson & Johnson | Tab fastener having fixed end anchored to diaper facing and backing |
| JPS5283404A (en) * | 1975-12-29 | 1977-07-12 | Mitsubishi Monsanto Chem Co | Elimination of monomers |
| DE2640546C2 (en) * | 1976-09-09 | 1982-07-01 | Hoechst Ag, 6000 Frankfurt | Process for the continuous removal of vinyl chloride from an aqueous dispersion of homo- and copolymers of vinyl chloride |
| US4201628A (en) * | 1977-10-07 | 1980-05-06 | The Goodyear Tire & Rubber Company | Separation apparatus |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT989178B (en) * | 1972-07-19 | 1975-05-20 | Solvay | PROCEDURE TO ELIMINATE RESIDUAL VINYL CHLORIDE PRESENT IN POLI MERI |
| DE2440957B2 (en) * | 1974-08-27 | 1977-07-14 | Chemische Werke Hüls AG, 4370 Mari | CONTINUOUS PROCESS FOR REMOVAL OF MONOMERIC IMPURITIES FROM AQUEOUS DISPERSIONS OF HOMO- AND COPOLYMERISATES OF VINYL CHLORIDE |
-
1974
- 1974-10-24 DE DE19742450464 patent/DE2450464A1/en not_active Withdrawn
-
1975
- 1975-10-17 IT IT2842175A patent/IT1043472B/en active
- 1975-10-17 GB GB4264775A patent/GB1519227A/en not_active Expired
- 1975-10-17 NL NL7512228A patent/NL7512228A/en not_active Application Discontinuation
- 1975-10-21 FR FR7532127A patent/FR2288751A1/en not_active Withdrawn
- 1975-10-23 BE BE161171A patent/BE834784A/en not_active IP Right Cessation
- 1975-10-23 JP JP12697275A patent/JPS5165189A/en active Pending
- 1975-10-23 ES ES442034A patent/ES442034A1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5165189A (en) | 1976-06-05 |
| IT1043472B (en) | 1980-02-20 |
| BE834784A (en) | 1976-04-23 |
| GB1519227A (en) | 1978-07-26 |
| DE2450464A1 (en) | 1976-04-29 |
| NL7512228A (en) | 1976-04-27 |
| FR2288751A1 (en) | 1976-05-21 |
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