Hoechst Aktiengesellschaft

Riedel-De Haen Aktiengesellschaft

Hans Gattner

Ernst Spietschka

Burkhard Sachse

Helmut Troster

Gerhard Wohner

Hans Rochling

Wolfgang Lindner

Erich Taschenbrecker

Karl Wagner

The present invention relates to the use of methylthiocyclopropylamino-tert.-butylamino-1,3,5-triazine (Mctt) as a microbicidal agent for the treatment of concrete roof tiles.

Use of a microbicidal agent for the treatment of concrete roof tiles

Triazolidino-pyridazine-diones of the formula (I) ##STR1## in which n represents an integer which is 1 or above, preferably the integers 1, 2 or 3,

Triazolidino-pyridazine-diones

When reacting a dyestuff having hydroxy, acyloxy, carboxy or carbalkoxy groups with a polyester derived from terephthalic and/or isophthalic acid and, per mol of dicarboxylic acid, about 0.75 to 1.5 mol of a low-molecular alkanetriol with primary alcohol groups (methylol groups) or, instead of said polyester, with the corresponding starting materials or precondensates, a polyester with chemically linked dyestuff units is obtained which is useful for dyeing plastics, especially polyolefins. The dyed plastic materials are heat resistant, even when containing fluorescent dyestuff units, transparent and uniformly dyed.

Dyed polyesters, process for their preparation and their use for the

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Bad Nenndorf, Germany

Hans Gattner