New selenazolyl and selenophenyl squaric acid dyestuff cpds. - prepd. by reacting N,N-di or N-mono-substd. 2-amino:selenazole(s) with squaric acid or ester(s) in polar solvent
DE4200790A1
Catalyst for hydrogenating halo-hydrocarbon cpds. to hydrocarbon - has hydrogen halide resistant support comprising iron@-nickel@-chromium@ alloy coated with titanium di:oxide
DE4200006A1
Activating molybdenum-contg. mixed oxide catalyst for propene ammoxidation - by treating with readily-dispersed bismuth-III cpd. at 300-600 deg.C
DE4134292A1
Vanadium pent:oxide anatase-carrier catalyst for phthalic anhydride prepn. - prepd. by controlling amt. of titanium incorporated into vanadium-oxygen lattice and excluding alkali(ne earth) ions
DE4124666A1
Prodn. and activation of bismuth-molybdenum mixed oxide catalysts - by treatment with ammonia, heating, impregnating with bismuth nitrate in dil. nitric acid, drying and heating
DE4109049A1
Vanadium oxide-titanium-carrier catalyst evaluation for phthalic acid prodn. - by comparing IR peak intensity at 800-900 cm with those at 750-1050 and at 1100-1200 cm
DE4109048A1
Modified epoxy-(meth)acrylate(s) for prods. with low water absorption - obtd. by esterification of epoxide oligomers, e.g. bisphenol=A di:glycidyl ether, with (meth)acrylic acid and satd. mono:carboxylic acid
DE4107213A1
Film production in multiroller calender - using cascade system of rollers with wedge in one gap to blend, fuse, dispensed, melt, degas and form material in one single pass
DE4107214A1
Double-calendering magnetic tapes - by passing through twice thus inverting with system of steel and paper rollers before passing outwards
DE4104783A1
Structured enzyme membranes prepn. - by charging mixt. of surfactant, enzyme solvent, photopolymer system contg. initiator and polymeric binder to sensor, developing etc.
DE4042010A1
Tri:methine and merocyanine dyestuff prodn. with 1,2-bridged carbocyclic chain - using precursor or onium cpd. and acetylene acid, for sensitising data recording material or laser dyestuff by simple synthesis
DE4042122A1
Efficiently cooling calendered film - by first passing through air jet or coolant and, after leaving gauging rollers, over series of small steel rollers or over endless metal band
DE4039730A1
Closed-coupled extruder and calender line with flow divider - defines shape creating wedge flow between die face and roll for intensive shearing, homogenisation and degassing
DE4039729A1
Wedge like mixing intensifier for calendering nip - comprises continuous metal band running round idler-and drive-rollers tensioning belt to vary surface contacting thermoplastic polymer
DE4039731A1
Polymer homogenisation device for compounding ingredients - comprises toothed roller forming depressions in pre-plasticised material on roll mill and dosing unit filling with powdered polyvinyl chloride
DD297712A5
Preparation of tungsten carbide-coated graphite cuffs for flame-free atomic absorption spectrometry
DE4028871A1
Biochemical reaction vessel for cultivation of microorganisms - consists of cylindrical vessel with heating jacket and spherical cover with viewing window and fittings for probes
DD297071A5
Adjustment device for rolling frequency meter
DD297072A5
Adjustment device for rolling frequency meter
DE4024770A1
Wiping crystal layer forming on cooled cylinder wall - by stiff resilient strips on radial arms between successive inclined cutters
