process for the production of zellhaltigen plastics after the polyisocyanat - polyadditionsverfahren through lagerstabiler, treibmittelhaltiger emulsion and this emulsion.

摘要

This invention concerns a process for producing cellular plastics by the polyisocyanate polyaddition process by reaction of (a) organic and/or modified organic polyisocyanates with (b) at least one high molecular compound with at least two reactive hydrogens and optionally (c) low molecular chain extenders and/or crosslinking agents in the presence of (d) blowing agents (e) catalysts (f) additives and/or processing aids where low boiling fluorinated or perfluorinated hydrocarbons with 3 to 8 carbons that are insoluble or almost insoluble in (a) to (c), sulfur hexafluoride or mixtures thereof are used as blowing agent (d) which is emulsified in reaction components (a), (b), mixtures of (b) and (c) or (a) and (b) as well as stable blowing agent emulsion of the aforementioned blowing agents (d) reaction components (a), (b) or (b) and (c).