Title:
PROCESS FOR PRODUCING RUBBER LATEX
Document Type and Number:
WIPO Patent Application WO/2001/046268
Kind Code:
A1
Abstract:
A process for producing a synthetic diene rubber which comprises: adding an electrolyte capable of coagulating rubber latex particles to a polymerization system during emulsion polymerization at the time when the conversion into polymer has reached a value in the range of from 10 to 70 wt. %; and at least 30 minutes after the electrolyte addition, adding an aqueous solution of both EDTA and an iron salt wherein the molar ratio of the EDTA to the iron salt is from 4. 3 to 18. By the process, a rubber latex of satisfactory quality can be produced while attaining a high conversion into polymer in a short time without prolonging the polymerization time.
Inventors:
HASEGAWA MITSUMASA (JP)
NODA MITSUNAGA (JP)
UENO MASAKUNI (JP)
NODA MITSUNAGA (JP)
UENO MASAKUNI (JP)
Application Number:
PCT/JP2000/008779
Publication Date:
June 28, 2001
Filing Date:
December 12, 2000
Export Citation:
Assignee:
KANEKA CORP (JP)
HASEGAWA MITSUMASA (JP)
NODA MITSUNAGA (JP)
UENO MASAKUNI (JP)
HASEGAWA MITSUMASA (JP)
NODA MITSUNAGA (JP)
UENO MASAKUNI (JP)
International Classes:
C08F2/22; C08F36/04; (IPC1-7): C08F2/22; C08F36/04
Foreign References:
| US4480078A | 1984-10-30 |
Other References:
See also references of EP 1270600A4
Attorney, Agent or Firm:
Asahina, Sohta (Tanimachi 2-chome Chuo-ku, Osaka-shi Osaka, JP)
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