EP 3976683 A1 20220406 - IMPROVED DISTILLATION CAPABILITY BY DILUTION WITH A COMPONENT TO BE SEPARATED OFF
Title (en)
IMPROVED DISTILLATION CAPABILITY BY DILUTION WITH A COMPONENT TO BE SEPARATED OFF
Title (de)
VERBESSERTE DESTILLIERFÄHIGKEIT DURCH VERDÜNNUNG MIT ABZUTRENNENDER KOMPONENTE
Title (fr)
APTITUDE À LA DISTILLATION AMÉLIORÉE PAR DILUTION AVEC UN CONSTITUANT À SÉPARER
Publication
Application
Priority
- EP 19176689 A 20190527
- EP 2020064043 W 20200520
Abstract (en)
[origin: WO2020239566A1] The invention relates to a method for purifying at least one reaction product of at least one diisocyanate, comprising at least the following steps: (A) providing a mixture A at least containing the at least one reaction product of the at least one diisocyanate and, if applicable, the at least one diisocyanate, (B) adding, if applicable more of, at least one diisocyanate to mixture A from step (A) in order to obtain a mixture B, and (C) separating off the at least one diisocyanate from mixture B from step (B) by distillation in order to obtain the purified at least one reaction product of the at least one diisocyanate. Furthermore, the present invention comprises the reaction product of at least one diisocyanate which can be obtained by the method according to the invention and the use thereof for producing polyurethane foams, polyurethane hydrogels, polyurethane elastomers, varnishes and bonding adhesives.
IPC 8 full level
B01D 3/34 (2006.01); C08G 18/10 (2006.01); C08G 18/48 (2006.01); C08G 18/73 (2006.01); C08G 18/82 (2006.01)
CPC (source: CN EP US)
B01D 3/10 (2013.01 - CN EP); B01D 3/12 (2013.01 - US); B01D 3/34 (2013.01 - US); C08G 18/10 (2013.01 - CN EP); C08G 18/4825 (2013.01 - EP); C08G 18/4833 (2013.01 - CN); C08G 18/4845 (2013.01 - US); C08G 18/73 (2013.01 - CN EP US); C08G 18/82 (2013.01 - CN EP); C08J 9/125 (2013.01 - US); C08G 2101/00 (2013.01 - CN); C08G 2110/0083 (2021.01 - CN); C08G 2150/00 (2013.01 - CN); C08G 2170/00 (2013.01 - CN); C08J 2203/10 (2013.01 - US); C08J 2375/08 (2013.01 - US)
Citation (search report)
See references of WO 2020239566A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3744747 A1 20201202; CN 113840857 A 20211224; EP 3976683 A1 20220406; US 2022212120 A1 20220707; WO 2020239566 A1 20201203
DOCDB simple family (application)
EP 19176689 A 20190527; CN 202080039508 A 20200520; EP 2020064043 W 20200520; EP 20726448 A 20200520; US 202017612065 A 20200620