BLOWING CATALYST

摘要

The invention relates to the use of a component according to one of the formulae (I) or (II), formula (I) being (R1R2NR3)2NR4, formula (II) being (R1R2NR3)NH2, wherein - each of R1 and R2 are chosen from the group consisting of a methyl group, an ethyl group, an iso-propyl group and an n-propyl group; - R3 being an alkoxyalkyl group chosen from the group consisting of -CH2CH2OCH2CH2-, -CH2CH2OCH2CH2CH2- and -CH2CH2OCH2CH2CH2CH2-; - R4 is chosen from the group consisting of a hydrogen and -CH2CH2CH2NH2, as a blowing catalyst of a catalyst system in a reaction of at least one polyisocyanate component and at least one isocyanate-reactive component, the catalyst system further comprising at least one gelling catalyst different from said component of formula (I) or (II).