EP 3230333 A1 20171018 - CATALYSTS FOR THE FORMATION OF ISOCYANURATES MADE FROM ISOCYANATES
Title (en)
CATALYSTS FOR THE FORMATION OF ISOCYANURATES MADE FROM ISOCYANATES
Title (de)
KATALYSATOREN FÜR DIE HERSTELLUNG VON ISOCYANURATEN AUS ISOCYANATEN
Title (fr)
CATALYSEURS POUR LA PRODUCTION D'ISOCYANURATES À PARTIR D'ISOCYANATES
Publication
Application
Priority
- EP 14197329 A 20141211
- EP 2015079254 W 20151210
Abstract (en)
[origin: WO2016092018A1] The invention relates to a method for producing isocyanurates and isocyanurate-containing polyurethanes, comprising the step of reacting an isocyanate in the presence of a catalyst. Said method is characterized in that the catalyst comprises the product of the reaction of a carboxylic acid containing thiol groups with an alkali-metal, alkaline-earth-metal, scandium-group, or lanthanoid base, wherein the reaction is performed in the absence of compounds containing tin and/or lead, wherein the degree of deprotonation of the catalyst is > 50% to ≤ 100% and the H atoms present in carboxyl groups, the carboxylate groups, the H atoms present in thiol groups, and the thiolate groups are also taken into account in the calculation of the degree of deprotonation. The catalyst is preferably a dipotassium salt of 2-mercaptoacetic acid, 3-mercaptopropionic acid, 4-mercaptobutyric acid, and/or thiosalicylic acid. Even at low temperatures, isocyanurates and/or isocyanurate units and in particular mixtures of isocyanurates and/or isocyanurate units and carbamates and/or urethane units, which are present in isocyanurate-containing polyurethanes (PUR/PIR systems), are obtained at a higher reaction speed than in the case of comparable methods in which catalysts that do not contain mercapto groups, such as potassium acetate, are used.
IPC 8 full level
C08G 18/48 (2006.01); C08G 18/02 (2006.01); C08G 18/09 (2006.01); C08G 18/16 (2006.01); C08G 18/22 (2006.01); C08G 18/42 (2006.01); C08G 18/79 (2006.01)
CPC (source: CN EP US)
B01J 31/0229 (2013.01 - US); C07D 251/30 (2013.01 - EP US); C08G 18/022 (2013.01 - CN EP US); C08G 18/092 (2013.01 - CN EP US); C08G 18/10 (2013.01 - US); C08G 18/14 (2013.01 - US); C08G 18/168 (2013.01 - CN EP US); C08G 18/222 (2013.01 - CN); C08G 18/225 (2013.01 - CN EP US); C08G 18/4018 (2013.01 - CN US); C08G 18/4202 (2013.01 - CN); C08G 18/4238 (2013.01 - CN EP US); C08G 18/4833 (2013.01 - CN EP US); C08G 18/7671 (2013.01 - US); C08G 18/791 (2013.01 - CN EP US); C08J 9/141 (2013.01 - CN US); B01J 2231/14 (2013.01 - US); C08G 2110/0025 (2021.01 - US); C08G 2115/02 (2021.01 - EP US); C08G 2330/00 (2013.01 - US); C08J 2203/14 (2013.01 - US); C08J 2205/10 (2013.01 - US); C08J 2375/06 (2013.01 - US)
Citation (search report)
See references of WO 2016092018A1
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 2016092018 A1 20160616; CN 107001562 A 20170801; EP 3230333 A1 20171018; US 2018001310 A1 20180104
DOCDB simple family (application)
EP 2015079254 W 20151210; CN 201580066856 A 20151210; EP 15807926 A 20151210; US 201515534790 A 20151210