Title of Invention

PROCESS FOR THE POLYMERISATION OF VINYL-CONTAINING MONOMERS

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.

Documents:

1018-MUMNP-2007-ABSTRACT(8-3-2010).pdf

1018-MUMNP-2007-ABSTRACT(GRANTED)-(24-9-2010).pdf

1018-mumnp-2007-abstract.doc

1018-mumnp-2007-abstract.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-claims.doc

1018-mumnp-2007-claims.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-drawings.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-1.pdf

1018-mumnp-2007-form-18.pdf

1018-mumnp-2007-form-2.doc

1018-mumnp-2007-form-2.pdf

1018-mumnp-2007-form-26.pdf

1018-mumnp-2007-form-3.pdf

1018-mumnp-2007-form-5.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

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Patent Number 243050
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:
# Inventor's Name Inventor's Address
1 TOEPFER ALEXANDER BECKSTRASSE 18, 84503 ALTOETTING
2 WOIKE ULRICH WALLBERGSTRASSE 9, 84508 BURGKIRCHEN
3 KLIPPERT HEINZ HOCHFELLNSTRASSE 14, 84508 BURGKIRCHEN
4 KEIL DETLEV MAXINGSTRASSE 1, 84453 MUEHLDORF
PCT International Classification Number B01J19/18 C08F2/00
PCT International Application Number PCT/EP05/013251
PCT International Filing date 2005-12-09
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 102005001771.1 2005-01-13 Germany