Abstract: Herbicidal oil dispersions comprising (a) desmedipham and/or phenmedipham, ethofumesate and lenacil, (b) one or more surfactants, c) one or more compounds which as far as possible are polar but at the same time are water-insoluble or have a solubility in water of up to 5 g/l, from the group of fully esterified organic phosphates and fully esterified phosphonates, as solvents, d) optionally further organic solvents, e) optionally further, customary formulating auxiliaries, f) optionally water are stable formulations and are suitable for controlling weeds, particularly for selective control in beet crops.

Abstract: Herbicidal oil dispersions comprising (a) desmedipham and/or phenmedipham, ethofumesate and lenacil, (b) one or more surfactants, c) one or more compounds which as far as possible are polar but at the same time are water-insoluble or have a solubility in water of up to 5 g/l, from the group of fully esterified organic phosphates and fully esterified phosphonates, as solvents, d) optionally further organic solvents, e) optionally further, customary formulating auxiliaries, f) optionally water are stable formulations and are suitable for controlling weeds, particularly for selective control in beet crops.

Abstract: Herbicidal oil dispersions comprising (a) desmedipham and/or phenmedipham, ethofumesate and lenacil, (b) one or more surfactants, c) one or more compounds which as far as possible are polar but at the same time are water-insoluble or have a solubility in water of up to 5 g/l, from the group of fully esterified organic phosphates and fully esterified phosphonates, as solvents, d) optionally further organic solvents, e) optionally further, customary formulating auxiliaries, f) optionally water are stable formulations and are suitable for controlling weeds, particularly for selective control in beet crops.

Abstract: A process is proposed for producing non-oxidic ceramic having a thermal conductivity in a predetermined range. A shaped body of non-oxidic ceramic material is heated to remove organic constituents, and is subsequently thermally treated in an oxygen-containing atmosphere to incorporate oxygen atoms into the crystal lattice of the non-oxidic ceramic, with the temperature and/or the hold time at this temperature being selected as a function of the predetermined thermal conductivity range, and the shaped body is finally sintered in a non-oxidizing atmosphere.

Abstract: A ceramic composition of matter which is sinterable at low temperatures is composed ofa) 40 to 90% by weight of a finely disperse, high-melting oxidic material andb) 10 to 60% by weight of a finely disperse glass having a softening point of 500.degree. to 850.degree. C., a coefficient of thermal expansion (=CTE) of 2 to 5.times.10.sup.-6 K.sup.-1 (measured in the interval from 0.degree. to 400.degree. C.) and a dielectric constant of less than 5 (measured at 10.sup.6 Hz and 20.degree. C.). The finely disperse oxidic material is composed of a mixture of MgO, Al.sub.2 O.sub.3 and SiO.sub.2 in an Al.sub.2 O.sub.3 /MgO weight ratio of 1.8-4 with an SiO.sub.2 weight fraction of 42-65% by weight or an equivalent quantity of corresponding oxide precursors which, on heating, decompose to give these oxides. The MgO or the MgO precursor has a mean grain size of 0.05 to 3 .mu.m and the SiO.sub.2 or the SiO.sub.2 precursor has a mean grain size of 2 to 20 .mu.m. The composition sinters at 900.degree.-1100.degree. C.