Title:
【発明の名称】ビウレツト構造を有するポリイソシアネートの製造方法
Document Type and Number:
Japanese Patent JP2668233
Kind Code:
B2
Abstract:
Polyisocyanates with biuret structures are produced at temperatures above 250 DEG C. More specifically, an excess of a diisocyanate having aliphatically and/or cycloaliphatically bound isocyanate groups is reacted with a diamine containing aliphatically and/or cycloaliphatically bound amino groups at temperatures above 250 DEG C. for relatively brief periods of time. Water and/or polyvalent alcohols may optionally be included in the reaction mixture. The polyisocyanates with biuret structures produced by this process are characterized by good color, good dilutability with covalent solvents and comparatively low viscosity.
Inventors:
Helmut Vouinard
Klaus Konig
Joseph Pedyne
Klaus Konig
Joseph Pedyne
Application Number:
JP16788A
Publication Date:
October 27, 1997
Filing Date:
January 05, 1988
Export Citation:
Assignee:
Bayer Actien Gezershyaft
International Classes:
C07C263/16; C07C67/00; C07C241/00; C07C265/00; C07C273/18; C07C275/62; C08G18/02; C08G18/78; (IPC1-7): C07C275/62; C08G18/02; C08G18/78
Domestic Patent References:
| JP54119431A | ||||
| JP49134629A |
Attorney, Agent or Firm:
Kawahara Kazuho