Th. Goldschmidt Ag

Arnold Laqua

Ulrich Holtschmidt

Eckehard Schamberg

Dieter Hellwig

Gunter Bertelmann

Guanidinium salts having the formula ##STR1## wherein R.sup.1 and R.sup.2 are linear alkyl residues,

Guanidinium salts, processes for their manufacture as well as

A method for the preparation of hardenable urea-formaldehyde resins for use in impregnating and coating carrier webs wherein urea and formaldehyde are first reacted in the presence of an aminosulfonic acid and ammonia, additional aminosulfonic acid is added and the mixture is further reacted to adjust the viscosity of the solution and then additional ammonia and urea are added to the reaction mixture and the mixture is further reacted to adjust the viscosity thereof, and wherein a polymer formed from the monomers of the formula ##STR1## in which R.sup.1 =H or CH.sub.3,

Process for the preparation of solutions of urea-formaldehyde resins for

This invention relates to a microbiocidal composition comprising a carrier and a microbiocidally effective amount of 1,3-di-n-decyl-2-methyl-imidazolium chloride or bromide.

1,3-Di-N-decyl-2-methyl-imidazolium chloride or bromide and

A method for the preparation of solutions of hardenable urea-formaldehyde resins which are suitable for impregnating paper supports used for coating wood-based panels wherein urea and formaldehyde are first mixed in specific mole ratios and reacted for a period of time to a given viscosity, an aminosulfonic acid is then added and the pH is controlled with ammonia to further react the mixture and finally, additional ammonia and urea are added to produce the final viscosity product wherein a portion of the initial urea is replaced with a melamine which results in significant improvements in the temperature and pH control of the process.

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Essen, Germany

Arnold Laqua