Cassella Aktiengesellschaft

Theodor Hymmen Kg

Peter Dorries

Steffen Piesch

Helmut Wahl

Karl-Heinz Keil

Karl Hintermeier

Manfred Schon

Alfons Wolf

Gunther Wulff

Thomas Gotze

Ewald Schmidt

Richard Hensel

Sulphonamide compounds of the formula ##STR1## are prepared by condensation of sulphonamides of the formula

Sulphonamide derivatives and their preparation and use

Modified aminoplast, its preparation and its use

A carrier web coated with amino resin wherein at least one surface is resinated is produced by applying a spreadable amino resin dispersion containing 70-90% by weight of amino resin and 30-10% by weight of a liquid dispersant to at least one surface of an uncoated carrier web in an apparatus comprising:

Carrier materials coated with amino resin dispersions, and their further

Amino resin dispersions

Diethanolammonium sulphamate is a curing agent for modified aminoplast resins.

Diethanolamine salt of sulphamic acid as a curing accelerator for

An internal release agent and the process of its manufacture aids in releasing thermosetting aminoplast resins from molds and is an aqueous solution or dispersion containing

Internal release agent for thermosetting aminoplast resins

A latent curing agent for aminoplast resins produced by reacting diethanolamine with glycidol in a molar ratio of 1:(1 to 1.2) at 0.degree. to 90.degree. C. and then reacting the product with 0.5 to 1 mole of sulfur dioxide per mole of diethanolamine at 0.degree. to 90.degree. C.

Latent curing agent for thermosetting aminoplast resins, its manufacture

A melamine-formaldehyde resin useful for making coated wood-based materials and laminates and having a prolonged pot life comprises (a) melamine-formaldehyde precondensation product wherein the molar ratio of melamine:formaldehyde is 1:1.4 to 1:2.6 and (b) 0.1 to 1.0% by weight based on total solids, of an amine of the formula ##STR1## wherein R.sup.1 and R.sup.2 are each identical or different alkyl having 1 to 4 carbon atoms and R.sup.3 is 2-hydroxyethyl, 2-(2-hydroxyethoxy)-ethyl, 3-hydroxy-1-propyl, 3-hydroxy-2-propyl, 2,3-dihydroxypropyl or

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Frankfurt am Main, Germany

Peter Dorries