Thermoplastic polyurethane elastomers
Номер патента: CA2178056A1
Опубликовано: 08-12-1996
Автор(ы): Hanns-Peter Müller, Martin Ullrich, Stephan Kirchmeyer, Ulrich Liesenfelder
Принадлежит: Bayer AG
Опубликовано: 08-12-1996
Автор(ы): Hanns-Peter Müller, Martin Ullrich, Stephan Kirchmeyer, Ulrich Liesenfelder
Принадлежит: Bayer AG
Реферат: A process for the production of thermoplastic polyurethane elastomer is disclosed. The process entails (a) introducing and homogeneously mixing in a first static mixer (A) an isocyanate and (B) a mixture of compounds having an average of 1.8 to 3.0 Zerewitinoff active hydrogen atoms having a molecular weight of 400 to 10000 with and chain extenders having an average of 1.8 to 3.0 Zerewitinoff active hydrogen atoms and a molecular weight of 62 to 400 and optional auxiliaries to form a substantially unreacted mixture and (b) reacting said substantially unreacted mixture in a second static mixer to form thermoplastic polyurethane elastomer. The elastomer thus produced has improved mechanical properties and is suitable for the production of moldings.
Process for reacting thermoplastic polyurethanes with compounds having isocyanate groups
Номер патента: US20100105842A1. Автор: Klaus Hilmer. Владелец: BASF SE. Дата публикации: 2010-04-29.