Title of Invention | PROCESS FOR THE POLYMERISATION OF VINYL-CONTAINING MONOMERS |
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Abstract | The invention relates to a process for the polymerisation of monomeric vinyl halides in a polymerisation reactor, especially using a reflux condenser, and also to a polymerisation reactor for carrying out the process according to the invention. As a result, the space-time yield (STY) of an exothermal reaction can be substantially improved whilst the product quality remains almost the same. |
Full Text | We claim: 1. Polymerization process wherein vinyl chloride is polymerized in a reactor (3) in an aqueous suspension, vapour is removed from a gas space (13) of the reactor (3), introduced by way of an inlet into a reflux condenser (5) and at least partially condensed in the reflux condenser, and the condensate is returned to the reactor (3) by way of an outlet that is separate from the inlet characterized in that the condensate is returned to the reactor (3) using a pump (8) capable of being automatically controlled or of being metered, and wherein the condensate is returned to a lower region of the reactor (3) which contains the liquid reaction mixture (10). 2. Process according to claim 1, characterized in that the inlet for the vapour into the reflux condenser (5) is arranged above the outlet for the condensate. 3. Process according to one of the preceding claims, characterized in that the polymerization is carried out in a dispersion or a solvent. 4. Process according to one of the preceding claims, characterized in that the condensate is returned to the reactor (3) under automatic or non-automatic control. 5. Process according to one of the preceding claims, characterized in that the condensate is returned to the gas space (13) of the reactor (3). 6. Process according to one of claims 1 to 5, characterized in that the condensate is returned to that part of the reactor (3) which contains the liquid reaction mixture (10). 7. Process according to one of the preceding claims, characterized in that the condensate is returned to a plurality of regions of the reactor (3). 8. Process according to one of the preceding claims, characterized in that the polymerization temperature is automatically or non-automatically controlled by means of selection of the return flow location of the condensate. 9. Process according to one of the preceding claims, characterized in that the polymerization temperature is automatically or non-automatically controlled by means of selection of the amount of return flow of the condensate. 10. Process according to one of the preceding claims, characterized in that the polymerization is carried out at a pressure of from 0.3 to 2 MPa. 11. Process according to one of the preceding claims, characterized in that the polymerization is carried out discontinuously. 12. Process according to one of the preceding claims, characterized in that the reflux condenser (5) is a jacket cooler (2). 13. Process according to one of the preceding claims, characterized in that the reflux condenser (5) comprises one or more bundled tubes. 14. Process according to one of the preceding claims, characterized in that heat of reaction is removed, in addition, by way of at least one further cooler. 15. Process according to claim 14, characterized in that the at least one further cooler is a jacket cooler (2). 16. Process according to claim 14, characterized in that the at least one further cooler is an internal cooler (11). 17. Apparatus for carrying out the process according to one of claims 1 to 16, wherein the gas space (13) of the reactor (3) is connected by way of a fluid connection (4) to a reflux condenser (5) and the offtake line of the reflux condenser (5) is connected by way of at least one further fluid connection (6, 7,14) to the reactor (3). 18. Apparatus according to claim 17, characterized in that the fluid connection (4) is connected to the reflux condenser (5) above the at least one further fluid connection (6, 7,14). 19. Apparatus according to claim 17 or 18, characterized in that the reflux condenser (5) is arranged vertically. 20. Apparatus according to claim 17 or 18, characterized in that the longitudinal axis of the reflux condenser (5) is arranged at an angle of less than 90° to the vertical. 21. Apparatus according to one of claims 17 to 20, characterized in that an automatically or non-automatically controllable pump (8) is connected to the offtake line of the reflux condenser (5) and the at least one fluid connection (6, 7,14) to the reactor (3). 22. Apparatus according to one of claims 17 to 21, comprising at least one further cooler. 23. Apparatus according to one of claims 17 to 22, characterized in that the reflux condenser is provided with a condensate collector. |
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1018-MUMNP-2007-ABSTRACT(8-3-2010).pdf
1018-MUMNP-2007-ABSTRACT(GRANTED)-(24-9-2010).pdf
1018-MUMNP-2007-CANCELLED PAGES(8-3-2010).pdf
1018-MUMNP-2007-CLAIMS(AMENDED)-(17-8-2010).pdf
1018-MUMNP-2007-CLAIMS(AMENDED)-(8-3-2010).pdf
1018-MUMNP-2007-CLAIMS(CANCELLED PAGES)-(17-8-2010).pdf
1018-mumnp-2007-claims(granted)-(24-9-2010).pdf
1018-MUMNP-2007-CORRESPONDENCE(17-8-2010).pdf
1018-mumnp-2007-correspondence(25-10-2007).pdf
1018-MUMNP-2007-CORRESPONDENCE(8-3-2010).pdf
1018-MUMNP-2007-CORRESPONDENCE(IPO)-(24-9-2010).pdf
1018-mumnp-2007-correspondence-received.pdf
1018-mumnp-2007-description (complete).pdf
1018-mumnp-2007-description(granted)-(24-9-2010).pdf
1018-MUMNP-2007-DRAWING(8-3-2010).pdf
1018-MUMNP-2007-DRAWING(GRANTED)-(24-9-2010).pdf
1018-mumnp-2007-form 1(25-10-2007).pdf
1018-mumnp-2007-form 2(granted)-(24-9-2010).pdf
1018-MUMNP-2007-FORM 2(TITLE PAGE)-(4-7-2007).pdf
1018-mumnp-2007-form 2(title page)-(granted)-(24-9-2010).pdf
1018-MUMNP-2007-FORM 3(4-7-2007).pdf
1018-MUMNP-2007-FORM 3(8-3-2010).pdf
1018-MUMNP-2007-FORM 5(4-7-2007).pdf
1018-MUMNP-2007-FORM 5(8-3-2010).pdf
1018-MUMNP-2007-FORM PCT-ISA-237(8-3-2010).pdf
1018-mumnp-2007-form-pct-ib-304.pdf
1018-mumnp-2007-pct-search report.pdf
1018-MUMNP-2007-PETITION UNDER RULE 137(8-3-2010).pdf
1018-MUMNP-2007-REPLY TO EXAMINATION REPORT(8-3-2010).pdf
1018-mumnp-2007-wo international publication report(25-10-2007).pdf
Patent Number | 243050 | |||||||||||||||
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Indian Patent Application Number | 1018/MUMNP/2007 | |||||||||||||||
PG Journal Number | 40/2010 | |||||||||||||||
Publication Date | 01-Oct-2010 | |||||||||||||||
Grant Date | 24-Sep-2010 | |||||||||||||||
Date of Filing | 04-Jul-2007 | |||||||||||||||
Name of Patentee | VINNOLIT GMBH & CO. KG | |||||||||||||||
Applicant Address | PROFIT-CENTER VINTEC, WERK GENDORF, 84504 BURGKIRCHEN | |||||||||||||||
Inventors:
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PCT International Classification Number | B01J19/18 C08F2/00 | |||||||||||||||
PCT International Application Number | PCT/EP05/013251 | |||||||||||||||
PCT International Filing date | 2005-12-09 | |||||||||||||||
PCT Conventions:
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