| 摘要 |
Reactive systems comprising a) a storage-stable mixture of (i) a polyisocyanate component and (ii) an epoxide component, the storage stability being ensured by heat treatment of the epoxide component carried out in the presence of an alkylating agent, b) an NCO-reactive component comprising at least one organic compound containing at least two groups which are reactive toward isocyanate groups, c) if desired tertiary amines, and, if desired, d) further assistants and additives, a process for the preparation of foamed or unfoamed polyurethane plastics containing isocyanurate groups by preparing a reactive system of this type by blending the individual components and heating the system, with or without simultaneous shaping, with supply of heat and/or utilisation of the heat of reaction to at least 60 DEG C. |
