Ciba-geigy Corporation

Ewald Forster

Wolfgang Seiz

Bruno Schreiber

Sameer H Eldin

Jurgen Habermeier

Friedrich Lohse

Rolf Schmid

Sheik A Zahir

Hermann Diethelm

Armin Schaffner

Guiseppe Lottanti

Peter Kartschmaroff

Hans Kramer

Inorganic-organic foams are obtained by foaming a mixture of

Foams of silicates and poly(meth)acrylic acids

Prepolymers of alkali metal silicates and/or alkaline earth metal silicates and metal oxides, which can be used as molding compositions, preferably compression molding compositions, for the production of compression-molding laminates or of insulating sheets, are obtained by a method wherein a mixture of solid alkali metal silicates and/or alkaline earth metal silicates, and/or aqueous solutions of such silicates, with or without addition of water, and of divalent to tetravalent metal oxides, the ratio of metal oxide to silicate in the mixture being from 1:1 to 1:9, expressed in parts by weight of solids, and the homogenized mixture having a water content of from 10 to 50% by weight, based on the total amount of mixture, is allowed to pre-react in the temperature range of 10.degree. to 50.degree. C. until the water content of the mixture has decreased by from 0.1 to 25% by weight and a product which is sufficiently tough and dry to permit comminution is obtained, and this product is comminuted and then heated at temperatures of up to 120.degree. C. until the prepolymer obtained has a water content of from 20 to 2% by weight.

Moldable prepolymers based on alkali metal silicates and alkaline earth

A composition for the treatment of paper which improves the wet strength of paper is provided. This composition contains

Composition, for the treatment of paper, which contains hydantoin

Method for treating paper with a composition containing hydantoin

The invention relates to storage-stable, quick-curing epoxide resin moulding materials containing:

Storage-stable, quick-curing epoxide resin moulding materials

Storage-Stable moulding compositions which contain solid adducts, containing epoxide groups, of triglycidyl-bis-hydantoins or triglycidyl-bis-dihydrouracils and organic compounds possessing several active hydrogen atoms, solid adducts, containing amino groups, of cycloaliphatic, heterocyclic or aromatic polyamines as curing agents, and fillers. The moulding compositions are used for the manufacture of light-stable and tracking-resistant plastics.

Storage-stable moulding compositions for the manufacture of

The subject of the present invention is a hot-curable resin mixture which contains a polyepoxide compound, a dicarboxylic acid and a polycarboxylic acid anhydride and which can be used as an impregnating and laminating resin and as an adhesive but above all as a casting resin.

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Allschwil, Switzerland

Ewald Forster