| abstract |
According to a process for preparing joint sealing foam, gypsum hydrate is suspended in water, the water slurry is intimately mixed with diphenylmethan-4,4'-diisocyanate prepolymers, diphenylmethan-4,2'-diisocyanate-prepolymers, 2,4-toluylene diisocyanate, 2,6-toluylene diisocyanate or with a mixture of such compounds, is introduced into the joint and is allowed to set in. |