Title:
REMOVAL OF POLYMERIZATION CATALYST
Document Type and Number:
Japanese Patent JP3153650
Kind Code:
B2
Abstract:
PURPOSE: To remove effectively a lithium compound without carrying out a complicated step by bringing a solution containing a conjugated diolefin polymer and a lithium compound in contact with a specified compound.
CONSTITUTION: To a solution containing 1 to 50 wt.% conjugated diolefin polymer and a lithium compound in an amount of 25 to 5,000 ppm based on the polymer that are dissolved in a solvent is added (0.2 to 10 wt.% magnesium phosphate, dibasic magnesium phosphate, or magnesium dihydrogenphosphate or a mixture thereof, and the solution is brought in contact therewith under a pressure of 2 to 80 bars at 25 to 120°C for 10 to 240 min, followed by centrifuging and settling to separate the above mixture, thereby recovering the conjugated diolefin polymer decreased in the lithium content.
More Like This:
| JP6118166 | A manufacturing method of a polymer |
| JP2009052048 | METHOD FOR CLEANING CRUDE POLYOLEFIN PRODUCT |
| JP2009500479 | Propylene polymer composition |
Inventors:
Gibler, Carma J.
Application Number:
JP29002692A
Publication Date:
April 09, 2001
Filing Date:
October 28, 1992
Export Citation:
Assignee:
SHELL INTERNATL RES MAATSCHAPPIJ BV
International Classes:
C08F6/08; C08C2/04; C08F6/06; C08F36/00; C08F36/04; (IPC1-7): C08F6/08; C08F36/04
Attorney, Agent or Firm:
川口 義雄 （外２名）
Previous Patent: 繊維性蛇篭製品
Next Patent: NEW OPTICALLY ACTIVE, NITROGEN-CONTAINING PERFLUOROCARBOXYLIC ACID AND PRODUCTION THEREOF
Next Patent: NEW OPTICALLY ACTIVE, NITROGEN-CONTAINING PERFLUOROCARBOXYLIC ACID AND PRODUCTION THEREOF