Title: ARTICLES MADE FROM THERMOPLASTIC POLYURETHANES WITH CRYSTALLINE CHAIN ENDS

 Number/Link: WO2014/189993

Applicant/Assignee: Lubrizol

Publication date: 27-11-2014

“Gist”: TPU with improved processability by using crystallizing chain stoppers.

Why it is interesting: While thermoplastic polyurethanes are very interesting engineering materials with an attractive combination of properties, their main drawback is the often very narrow processing window. Especially soft TPUs are both difficult to produce and process. According to this invention TPUs, including soft TPUs, with greatly improved processing properties can be produced by incorporating crystallizing chain stoppers. In the examples straight chain hydrocarbon monols with 33 and 63 carbons are used as chain stoppers in an amount of about 1 to 10% w/w on the total composition.

TPU pellets