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1. (WO2018202564) STORAGE-STABLE POLYURETHANE POTTING COMPOUND FOR EMBEDDING OF HOLLOW FIBRES IN THE PRODUCTION OF FILTER ELEMENTS

Pub. No.:    WO/2018/202564    International Application No.:    PCT/EP2018/060830
Publication Date: Fri Nov 09 00:59:59 CET 2018 International Filing Date: Sat Apr 28 01:59:59 CEST 2018
IPC: C08G 18/36
C08G 18/32
C08G 18/48
C08G 18/12
C08G 18/22
B01D 63/02
C02F 1/00
A61M 1/00
Applicants: BASF SE
Inventors: KAMM, Andre
MATHIEU, Thomas
LUKAT, Gunther
FRITZ, Ralf
Title: STORAGE-STABLE POLYURETHANE POTTING COMPOUND FOR EMBEDDING OF HOLLOW FIBRES IN THE PRODUCTION OF FILTER ELEMENTS
Abstract:
The present invention relates to polyurethane potting compounds for embedding of hollow fibres of filter elements. These are obtainable by mixing a polyol component (A) and an isocyanate component (B) to afford a reaction mixture and reacting the mixture to afford the polyurethane potting compound, wherein the polyol component (A) (a1) contains at least one fatty acid-based polyol, (a2) at least one amine compound having at least one tertiary nitrogen atom and at least one isocyanate-reactive hydrogen atom and (a3) at least one metal compound which acts as a polyurethane catalyst, wherein the polyurethane catalyst (a3) contains no tin, lead and/or mercury, and the isocyanate component (B) contains at least one aromatic isocyanate having at least two isocyanate groups. The present invention further relates to a process for producing filter elements using the polyurethane potting compounds and to the use of the polyurethane potting compounds for embedding of hollow fibres.