Title:
【発明の名称】芳香族ポリケトンの製造方法
Document Type and Number:
Japanese Patent JP2596930
Kind Code:
B2
Abstract:
Polyaryletherketones are synthesised by Friedel-Crafts chemistry using a catalytic quantity of a strong acid (e.g. trifluoromethanesulphonic acid) in a solvent of lower acidity preferably comprising a second acid of strength at least equal to chloroacetic acid. Suitable second acids can be recovered for reuse, and only a small (catalytic) amount of the expensive strong acid is required.
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| WO/2007/085371 | PROCESS FOR PREPARING POLYTHIOPHENES |
Inventors:
Ian David Henderson Tours
Application Number:
JP8964887A
Publication Date:
April 02, 1997
Filing Date:
April 11, 1987
Export Citation:
Assignee:
Raychem Limited
International Classes:
C08G61/00; C08G61/12; C08G67/00; C08G67/02; (IPC1-7): C08G67/02
Domestic Patent References:
| JP59135224A | ||||
| JP5887127A | ||||
| JP5817118A | ||||
| JP57182321A | ||||
| JP57208320A |
Other References:
【文献】英国特許2099006(GB,A)
【文献】欧州特許公開87532(EP,A1)
【文献】欧州特許公開87532(EP,A1)
Attorney, Agent or Firm:
Aoyama Ryo (2 outside people)