Title:
イソシアネート基を有するプレポリマーの製造方法
Document Type and Number:
Japanese Patent JP4479926
Kind Code:
B2
Abstract:
The invention relates to a process for preparing prepolymers containing isocyanate groups by reacting a) diisocyanates with b) compounds having at least two hydrogen atoms which are reactive toward isocyanate groups in the presence of c) catalysts, and subsequently separating off the excess monomeric diisocyanates, wherein the diisocyanates a) used are unsymmetrical diisocyanates and the catalysts c) used are organometallic catalysts and these organometallic catalysts are removed, blocked or deactivated before the monomeric diisocyanates are separated off.
Inventors:
Michael, Vint
Krienschmitt, Martin
Mural, Imbritt
Reese, Hans-Jurgen
Ulter, Heiko
Marz, Hauke
Krienschmitt, Martin
Mural, Imbritt
Reese, Hans-Jurgen
Ulter, Heiko
Marz, Hauke
Application Number:
JP2006537224A
Publication Date:
June 09, 2010
Filing Date:
October 30, 2004
Export Citation:
Assignee:
BASF SE
International Classes:
C08G18/10; C08G18/08; C08G18/22; C08G18/24; C08G18/72
Domestic Patent References:
| JP2002327164A | ||||
| JP8301970A | ||||
| JP2001122938A | ||||
| JP52141897A | ||||
| JP8176253A |
Attorney, Agent or Firm:
Satoshi Eto