Loading patent…
AssigneesReuter Technologie GmbH, Chemie-Anlagenbau Bischofsheim GmbH
InventorsFranz G. Reuter, Karl-Heinz Hilterhaus
Estimating the term…
The present invention relates to a process for the manufacture of foamed or non-foamed compositions, in which one or more organic or inorganic compounds containing at least two isocyanate groups is or are reacted in the presence of an alkaline aqueous solution, an alkaline aqueous suspension or an alkaline aqueous slurry of an alkali metal hydroxide and/or alkaline earth metal hydroxide, and of one or more catalysts and, optionally, inert fillers and/or, optionally, one or more volatile substances as blowing agents. According to the invention, a mixture of the compound or compounds containing the isocyanate groups and the alkali metal hydroxide or oxide and/or alkaline earth metal hydroxide or oxide is added to a mixture of water and catalyst. The oxide employed is preferably calcium oxide.
Process for the manufacture of foamed or non-foamed compositions comprising reacting at least one organic or inorganic compound containing at least two isocyanate groups in the presence of an alkaline aqueous solution, an alkaline aqueous suspension or an alkaline aqueous slurry of an alkali metal hydroxide or alkaline earth metal hydroxide, and at least one catalyst characterized in that a mixture of the compound containing isocyanate groups and said hydroxide or oxide is added to a mixture of water and catalyst.
In a process for making a synthetic resin foam wherein a compound containing Zerwitinoff hydrogen reactive with an --NCO group is reacted with a polyisocyanate, the improvement which comprises mixing with
Dependencies are inferred from the claim text.