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1. (WO2018162615) MICROENCAPSULATED POLYADDITION CATALYST

Pub. No.:    WO/2018/162615    International Application No.:    PCT/EP2018/055701
Publication Date: Fri Sep 14 01:59:59 CEST 2018 International Filing Date: Fri Mar 09 00:59:59 CET 2018
IPC: C08G 18/48
B01J 13/02
C08G 18/79
C08G 18/22
C08G 18/24
C08K 9/10
Applicants: CONSTRUCTION RESEARCH & TECHNOLOGY GMBH
Inventors: WOELFLE, Heimo
STAFF, Roland Hinrich
BRANDT, Kristina
LOPEZ VILLANUEVA, Francisco Javier
Title: MICROENCAPSULATED POLYADDITION CATALYST
Abstract:
A microencapsulated polyaddition catalyst comprises a capsule core containing a polyaddition catalyst and an acrylic copolymer as the capsule shell, the acrylic copolymer containing units of an intermolecular anhydride of an ethylenically unsaturated C3-C12 carboxylic acid polymerized into it. The polyaddition catalyst is selected from the group consisting of acyclic tertiary amines, alicyclic tertiary amines, N-alkyl imidazoles, phosphines and organic metal salts. It is suitable for catalyzing the reaction of a polyol compound with a polyisocyanate compound. The polyaddition catalyst is released by a chemical stimulus, e.g. upon contact with polyols or water.