Production of cellular plastics by the polyisocyanate polyaddition process, and low-boiling, fluorinated or perfluorinated, tertiary alkylamines as blowing agent-containing emulsions for this purpose

摘要

A process for the production of cellular plastics by the polyisocyanate polyaddition process, by reactingPPa) an organic and/or modified organic polyisocyanate withPPb) at least one relatively high-molecular-weight compound containing at least two reactive hydrogen atoms, and, if desired,PPc) a low-molecular-weight chain extender and/or crosslinking agent,P Pin the presence ofPPd) a blowing agentP Pe) a catalyst andPPf) assistants and/or additives,PPwherein the blowing agent (d) usedP Pd1) a low-boiling, fluorinated or perfluorinated tertiary alkylamine, orPPa mixture of (d1) and at least one physical or chemical blowing agent (d2) which is different from (d1), and blowing agent-containing emulsions comprising the abovementioned blowing agent (d1) or a blowing agent mixture of (d1) and (d2) and the starting components (a), (b), (c) or (b) and (c).