EP 3986944 A1 20220427 - WATER-EMULSIFIABLE ISOCYANATES WITH IMPROVED PROPERTIES
Title (en)
WATER-EMULSIFIABLE ISOCYANATES WITH IMPROVED PROPERTIES
Title (de)
WASSEREMULGIERBARE ISOCYANATE MIT VERBESSERTEN EIGENSCHAFTEN
Title (fr)
ISOCYANATES ÉMULSIFIABLES DANS L'EAU QUI PRÉSENTENT DES PROPRIÉTÉS AMÉLIORÉES
Publication
Application
Priority
- EP 19182000 A 20190624
- EP 2020067000 W 20200618
Abstract (en)
[origin: WO2020260133A1] The invention relates to a method for preparing a water-emulsifiable polyisocyanate preparation, in which in a first method step (A), a dispersing reaction product (E) is prepared from: at least one diisocyanate, selected from among the group comprising 1,6-hexamethylene diisocyanate, 1,5-pentamethylene diisocyanate, 4,4'-di-(isocyanatocyclohexyl)-methane, 1-isocyanato-3,3,5-trimethyl-5-(isocyanatomethyl)cyclohexane, 2,4- and 2,6-toluylene diisocyanate, tetramethylxylylene-diisocyanate, p-xylylene diisocyanate, and 2,4'- and 4,4'-di-isocyanatodiphenyl methane; and at least one mono- or polyvalent polyalkylene ether alcohol having 2 to 4 C-atoms in the alkylene groups and having a polyether chain containing at least 8 ethylene oxide units, and the resultant reaction product (E) is mixed, in a second method step (B), with at least one (cyclo)aliphatic polyisocyanate with an average NCO functionality of 2.2 to 5.0, preferably 2.5 to 4.0, step (B) being carried out in the presence of an allophanatisation catalyst and the conditions being chosen such that allophanate groups are formed from (E) and the polyisocyanate, characterised in that the allophanatisation catalyst is at least one salt consisting of a metal cation and at least one dithiophosphate anion.
IPC 8 full level
C08G 18/08 (2006.01); C08G 18/10 (2006.01); C08G 18/22 (2006.01); C08G 18/28 (2006.01); C08G 18/70 (2006.01); C08G 18/76 (2006.01); C08G 18/78 (2006.01); C08G 18/79 (2006.01)
CPC (source: CN EP US)
C08G 18/0866 (2013.01 - EP US); C08G 18/10 (2013.01 - CN EP US); C08G 18/222 (2013.01 - CN EP US); C08G 18/283 (2013.01 - EP US); C08G 18/4833 (2013.01 - CN); C08G 18/706 (2013.01 - EP US); C08G 18/73 (2013.01 - CN EP); C08G 18/7621 (2013.01 - CN EP); C08G 18/7837 (2013.01 - EP); C08G 18/792 (2013.01 - EP); C09D 175/08 (2013.01 - CN US); C09J 175/08 (2013.01 - CN); C08G 2150/00 (2013.01 - CN US); C08G 2170/00 (2013.01 - CN)
Citation (search report)
See references of WO 2020260133A1
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)
WO 2020260133 A1 20201230; CN 114008102 A 20220201; EP 3986944 A1 20220427; US 2022242996 A1 20220804
DOCDB simple family (application)
EP 2020067000 W 20200618; CN 202080046037 A 20200618; EP 20733967 A 20200618; US 202017621709 A 20200618