公开(公告)号：JPH1143529A

公开(公告)日：1999-02-16

申请号：JP14602698

申请日：1998-05-27

Applicant: BASF AG

Inventor： SCHOLZ GUENTER ,  HACKL CHRISTA ,  BITTNER GERHARD DR ,  REICHEL CURTIS JOHN ,  FISHBACK THOMAS L ,  AVILES GLADYS DR ,  NIETSCHKE DIETER ,  CHLOSTA ANDREAS

IPC: C08G18/32 ,  C08G18/48 ,  C08G18/66

Abstract: PROBLEM TO BE SOLVED: To obtain the subject polyurethane excellent in reactivity and mechanical characteristics, by reacting an isocyanate with a polyol containing a polyether polyalcohol having a specific structural unit, molecular weight and degree of unsaturation. SOLUTION: This polyurethane is obtained by reacting an isocyanate with,2 polyol having a molecular weight of 500-1000, including at least one kind of polyether polyol (preferably, including 5-30 wt.% ethylene group, based on the total weight of all polyoxyalkylene groups and having a hydroxyl number of 10-230 mgKOH/mol and functionality of 1.9-3.0) having a molecular weight of 500-10000 g/mol, degree of unsaturation of

公开(公告)号：CA2233664A1

公开(公告)日：1998-11-27

申请号：CA2233664

申请日：1998-05-21

Applicant: BASF AG

Inventor： HACKL CHRISTA ,  FISHBACK THOMAS L ,  SCHOLZ GUENTER ,  REICHEL CURTIS JOHN ,  AVILES GLADYS ,  CHLOSTA ANDREAS ,  BITTNER GERHARD ,  NIETSCHKE DIETER

IPC: C08G18/32 ,  C08G18/48 ,  C08G18/66

Abstract: In a process for preparing thermoplastic polyurethanes by reacting (a) isocyanates with (b) compounds reactive toward isocyanates and having a molecular weight of from 500 to 10,000 g/mol, in the presence or absence of (c) chain extenders having a molecular weight of less than 500 g/mol, (d) catalysts and/or (e) customary auxiliaries and additives, the component (b) used comprises at least one polyether polyalcohol (bl) comprising polyoxypropylene and polyoxyethylene units and having a molecular weight of from 500 to 10,000 g/mol, an unsaturation of less than 0.07 meq/g and a primary hydroxyl group content of from 80 to 100 %.