EP 0363360 A4 19900627 - NEUTRALIZATION OF POLYALKYLENE CARBONATE POLYOLS FOR POLYURETHANE PREPOLYMER SYNTHESIS.
Title (en)
NEUTRALIZATION OF POLYALKYLENE CARBONATE POLYOLS FOR POLYURETHANE PREPOLYMER SYNTHESIS.
Title (de)
NEUTRALISIERUNG VON POLYALKYLEN-CARBONAT-POLYOLEN FÜR POLYURETHAN PREPOLYMER SYNTHESE.
Title (fr)
NEUTRALISATION DE POLYOLS DE CARBONATE DE POLYALKYLENE POUR LA SYNTHESE DE PREPOLYMERES DE POLYURETHANE.
Publication
Application
Priority
US 1495487 A 19870217
Abstract (en)
[origin: WO8806150A1] A prepolymer stabilization process for polyalkylene carbonate polyols includes the steps of adding a small quantity of an organosulfonic acid with stirring until base neutralization is achieved. One measure of base neutralization is a negative CPR, a test relating to controlled polymerization rate.
IPC 1-7
IPC 8 full level
C07C 68/08 (2006.01); C07C 69/96 (2006.01); C08G 18/08 (2006.01); C08G 18/42 (2006.01); C08G 18/44 (2006.01); C08G 64/40 (2006.01); C08K 5/42 (2006.01)
CPC (source: EP)
C08G 18/089 (2013.01); C08G 18/44 (2013.01); C08K 5/42 (2013.01)
C-Set (source: EP)
Citation (search report)
- [AP] EP 0293690 A2 19881207 - GEN ELECTRIC [US]
- [A] EP 0103738 A2 19840328 - BAYER AG [DE]
- [A] US 4528364 A 19850709 - PRIER DONALD G [US]
- See references of WO 8806150A1
Designated contracting state (EPC)
BE CH DE FR GB IT LI NL SE
DOCDB simple family (publication)
WO 8806150 A1 19880825; AU 1149888 A 19880818; AU 605240 B2 19910110; BR 8807361 A 19900301; CA 1320772 C 19930727; EP 0363360 A1 19900418; EP 0363360 A4 19900627; JP H02501830 A 19900621
DOCDB simple family (application)
US 8800285 W 19880201; AU 1149888 A 19880210; BR 8807361 A 19880201; CA 558306 A 19880205; EP 88901720 A 19880201; JP 50171588 A 19880201