EP 0730614 A1 19960911 - PROCESS FOR PRODUCING THERMOPLASTIC POLYURETHANES BY COMBINED THETHERMOPLASTIC TREATMENT OF A HYDROXYL- AND AN ISOCYANATE POLYURETHANE

Title (en)

PROCESS FOR PRODUCING THERMOPLASTIC POLYURETHANES BY COMBINED THETHERMOPLASTIC TREATMENT OF A HYDROXYL- AND AN ISOCYANATE POLYURETHANE

Title (de)

EIN VERFAHREN ZUR HERSTELLUNG THERMOPLASTISCHER POLYURETHANE DURCH GEMEINSAME THERMOPLASTISCHE VERARBEITUNG EINES HYDROXYL- UND EINES ISOCYANAT-POLYURETHANS

Title (fr)

PROCEDE DE PRODUCTION DE POLYURETHANES THERMOPLASTIQUES PAR TRAITEMENT THERMOPLASTIQUE COMMUN D'UN POLYURETHANE D'HYDROXYLE ET D'UN POLYURETHANE D'ISOCYANATE

Publication

EP 0730614 A1 19960911 (DE)

Application

EP 95901379 A 19941114

Priority

DE 4340352 A 19931126
EP 9403774 W 19941114

Abstract (en)

[origin: WO9514723A1] A process is disclosed for the production of thermoplastic polyurethanes by the combined thermoplastic treatment of a) a polyurethane and/or polyurethane polycarbamide with free hydroxyl groups and/or amino groups and b) a polyurethane and/or polyurethane polycarbamide obtainable by the isocyanate-polyaddition process with a characteristic number of above 100. The process is characterized by the fact that : i) in the production of component b) the characteristic number is between 110 and 150 and ii) in the thermoplastic treatment of components a) and b), the molar ratio of the theoretical isocyanate surplus of component b) to the free hydroxyl groups and/or amino groups content of component a) ranges from 1.02:1 (mol NCO:mol OH or NH2) to 100:1.

IPC 1-7

C08G 18/12; C08G 18/10

IPC 8 full level

C08L 75/04 (2006.01); C08G 18/10 (2006.01); C08G 18/12 (2006.01); C08L 75/00 (2006.01)

CPC (source: EP)

C08G 18/12 (2013.01)

C-Set (source: EP)

C08G 18/12 + C08G 18/40

Citation (search report)

See references of WO 9514723A1

Designated contracting state (EPC)

AT BE CH DE DK ES FR GB IT LI NL PT SE

DOCDB simple family (publication)

WO 9514723 A1 19950601; CA 2177168 A1 19950601; CZ 152096 A3 19960911; EP 0730614 A1 19960911; HU 9601417 D0 19960729; HU T74769 A 19970228; JP H09505325 A 19970527; PL 314586 A1 19960916

DOCDB simple family (application)

EP 9403774 W 19941114; CA 2177168 A 19941114; CZ 152096 A 19941114; EP 95901379 A 19941114; HU 9601417 A 19941114; JP 50781095 A 19941114; PL 31458694 A 19941114