Title:
MANUFACTURE OF POLYISOCYANATE HAVING BURET STRUCTURE
Document Type and Number:
Japanese Patent JPS60188415
Kind Code:
A
Abstract:
The present invention is directed to a process for the production of polyisocyanates which have a biuret structure by reacting aliphatic diisocyanates with water at elevated temperature, characterized in that the reaction is carried out in the presence of: (a) alpha , alpha , alpha -tri-substituted acetic acids, which do not have any further isocyanate-reactive group other than the carboxyl group, and/or (b) anhydrides of acids of the type mentioned in (a) wherein up to 0.39 mols of component (a) are used per mol of water, up to about 2 mols of component (b) are used per mol of water, and the total quantity of components (a) and (b) is at least 0.02 to about 2 mols per mol of water.
Inventors:
KURAUSU KEENITSUHI
YOZEFU PEDAIN
HERUMUUTO BUOINAARU
YOZEFU PEDAIN
HERUMUUTO BUOINAARU
Application Number:
JP1366485A
Publication Date:
September 25, 1985
Filing Date:
January 29, 1985
Export Citation:
Assignee:
BAYER AG
International Classes:
C07C273/18; C07C275/62; C08G18/00; C08G18/30; C08G18/78; (IPC1-7): C08G18/30; C08G18/78
Attorney, Agent or Firm:
Kazuho Kawarada