Raw material for polyurethane production and process for its preparing from waste polyurethane

0423478 - ÚMCH 2014 RIV eng P - Patent Document
Vlček, T. - Beneš, Hynek - Kruliš, Zdeněk
Raw material for polyurethane production and process for its preparing from waste polyurethane.
2013. Owner: Ústav makromolekulární chemie AV ČR, v. v. i. Date of the patent acceptance: 20.11.2013. Patent Number: EP2480584
R&D Projects: GA MPO 2A-2TP1/135
Institutional research plan: CEZ:AV0Z40500505
Keywords : polyurethane * bioreagent * recycling
Subject RIV: CD - Macromolecular Chemistry
http://worldwide.espacenet.com/publicationDetails/originalDocument?FT=D&date=20141203&DB=worldwide.espacenet.com&locale=en_EP&CC=EP&NR=2480584B1&KC=B1&ND=4

Recycling of polyurethanes using bioreagents with functional hydroxy groups, when liquid products are obtained, which have a markedly lower hydroxyl number. This makes it possible to utilize them as a raw material for production of expanded and compact polyurethanes. By an appropriate choice of the bioreagent, the resulting functionality of the product, its hydroxyl number and reactivity depending on the content of primary and secondary alcoholic hydroxy groups and amino groups and thus to obtain a raw material for production of polyurethanes with optimum parameters according to the required applications.
Permanent Link: http://hdl.handle.net/11104/0230386