| abstract |
According to a process for preparing sealant foam for joints, plaster hydrate is suspended in water, this aqueous suspension is intimately mixed with prepolymers of diphenylmethan-4,4'-diisocyanate or diphenylmethan. -4,2'-diisocyanate, with 2,4-toluylene diisocyanate, 2,6-toluylene diisocyanate or with a mixture of these compounds, it is introduced into the joint and allowed to harden. |