摘要:
3-Phenyl-oxazolidine-2,4-dione derivatives can be halogenated directly, without splitting of the heterocyclic ring. The products thus obtained have a fungicidal action which is substantially wider than that of compounds hitherto known.
摘要:
A method and an arrangement for optimizing the luminance characteristic curve for a display system using a lookup table. Digitized video levels are supplied to this lookup table and are optimized using correction values stored in the lookup table. With suitable means, the luminance characteristic curve can be easily adapted to standards and/or custom specifications. The memory requirement is low, since it is not necessary to provide different lookup tables for different ambient luminosities or selected reproduction models (curves).
摘要:
The invention is directed to an extremely low-capacitance device for shaping an electron beam. The device is based on a ceramic body having a monolithic multi-layer structure. The manufacture of the ceramic body ensues with the assistance of LTCC technology, whereby this method is designationally modified. The body is constructed of pre-sintered ceramic layers whose lateral shrinkage is suppressed. The through apertures of the electrodes for the electron beam are thus arranged exactly coaxially, and the tolerances of the electrode dimensions are decoupled from the shrinkage during sintering. The electron beam of an electron gun is focused and the intensity thereof is modulated with the assistance of such a device.
摘要:
A cathode ray tube is described having at least one electron gun including a cathode, a control grid, and a focusing unit, and a strip made of electrically conductive material applied to the cathode ray tube in parallel to the outer coating of the tube and connected to ground potential. Means and measures are provided to eliminate harmful effects of high-voltage sparkovers. The cathode ray tube may be is used, for example, in monitors.
摘要:
Novel substituted isonicotinic acid amides of the general formula ##STR1## in which X in ortho/ortho'-position are equal and represent fluorine, chlorine, bromine or iodine;Q.sub.1 is unsubstituted pyridimin-4-yl, or pyrimidin-4-yl substituted by R.sub.1, R.sub.2 and R.sub.3 ;Q.sub.2 is unsubstituted pyrimidin-2-yl, or pyrimidin-2-yl substituted by R.sub.1, R.sub.2 and R.sub.3 ;Q.sub.3 is unsubstituted pyrimidin-5-yl, or pyrimidin-5-yl substituted by R.sub.1, R.sub.2 and R.sub.3 ;Q.sub.4 is pyridin-2-yl, pyridin-3-yl or pyridin-4-yl each of which is unsubstituted or substituted by R.sub.1, R.sub.2 and R.sub.3 ;Q.sub.5 is pyridazin-3-yl or pyridazin-4-yl each of which is unsubstituted or substituted by R.sub.1, R.sub.2 and R.sub.3 ;Q.sub.6 is unsubstituted pyrazin-2-yl, or pyrazin-2-yl substituted by R.sub.1, R.sub.2 and R.sub.3 ;R.sub.1, R.sub.2, R.sub.3 are hydrogen, halogen, C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 haloalkyl having from 1 to 3 halogen atoms, C.sub.1 -C.sub.6 alkoxy, C.sub.2 -C.sub.6 alkoxyalkyl, C.sub.1 -C.sub.6 thioalkyl, C.sub.1 -C.sub.6 haloalkoxy having from 1 to 5 halogen atoms, C.sub.3 -C.sub.6 alkenyloxy, C.sub.3 -C.sub.6 alkynyloxy, C.sub.3 -C.sub.6 thioalkenyl, C.sub.3 -C.sub.6 cycloalkyl, C.sub.3 -C.sub.6 cycloalkyl substituted by methyl, or nitro, cyano, the radical CH(OR.sub.4).sub.2 or COOR.sub.4 in which R.sub.4 is C.sub.1 -C.sub.4 alkyl; also phenyl, phenoxy, thiophenyl, benzyl, benzyloxy or thiobenzyl; or phenyl, phenoxy, thiophenyl, benzyl, benzyloxy or thiobenzyl each substituted at least once by C.sub.1 -C.sub.3 alkyl, C.sub.1 -C.sub.3 -alkoxy, C.sub.1 -C.sub.3 haloalkyl having from 1 to 3 halogen atoms, halogen, nitro or by cyano; and also N(R.sub.5)R.sub.6 in which R.sub.5 and R.sub.6, independently of one another, are each C.sub.1 -C.sub.6 alkyl; and furthermore piperidinyl, pyrrolidinyl, morpholinyl, imidazolyl or triazolyl, or piperidinyl, pyrrolidinyl, morpholinyl, imidazolyl or triazolyl each substituted by C.sub.1 -C.sub.3 alkyl, C.sub.1 -C.sub.3 alkoxy, C.sub.1 -C.sub.3 haloalkyl having from 1 to 3 halogen atoms, halogen, nitro or by cyano.The novel active ingredients have plant-protecting properties and are suitable especially for the preventive protection of plants against attack by phytopathogenic microorganisms such as fungi, bacteria and viruses.
摘要:
The invention relates to novel heterocyclic organosilyl compounds of the general formula I ##STR1## wherein R.sub.1 is hydrogen, C.sub.1 -C.sub.10 alkyl, C.sub.3 -C.sub.7 cycloalkyl, phenyl or trimethylsilyl,R.sub.2 is hydrogen or C.sub.1 -C.sub.4 alkyl, orR.sub.1 and R.sub.2 together form a saturated or unsaturated ring containing 6 carbon atoms;R.sub.3 and R.sub.4 are each independently of the other hydrogen, C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 alkoxy, and R.sub.4 may also be C.sub.3 -C.sub.7 cycloalkyl;R.sub.5 to R.sub.12 are each independently hydrogen or C.sub.1 -C.sub.4 alkyl, andR.sub.8 and R.sub.9 together may also form a saturated or unsaturated ring containing 6 carbon atoms;X is CH.sub.2, oxygen or sulfur, andn and Z are each independently of the other 0 or 1, and, if Z is 0, to the acid addition salts thereof.The novel compounds have microbicidal properties and are suitable in particular for controlling phytopathogenic microorganisms.
摘要:
The invention relates to novel pyrimidine derivatives of the general formula ##STR1## wherein A is phenyl, phenoxyphenyl, phenylthiophenyl, biphenyl or naphthyl R.sub.a, R.sub.b and R.sub.c are each independently hydrogen, halogen, cyano, nitro, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 haloalkyl or C.sub.1 -C.sub.4 haloalkoxy andX is one of the following bridge elements ##STR2## in which formulae R.sub.1 and R.sub.2 are each independently of the other hydrogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 haloalkyl or CH.sub.2 O--C.sub.1 -C.sub.4 alkyl, R.sub.4 is hydrogen, C.sub.1 -C.sub.4 alkyl or CH.sub.2 OH and R.sub.3, R.sub.5 and R.sub.6 are each independently hydrogen or C.sub.1 -C.sub.4 alkyl,and to the acid addition salts thereof.The novel compounds possess microbicidal properties and are suitable in particular for controlling phytopathogenic microorganisms.
摘要:
Phosphoric acid esters of the formula ##STR1## wherein X is CH or N,Ar is optionally substituted phenyl, diphenyl or naphthyl,R is cyano, carboxylic acid ester, carboxylic acid thioester or carboxylic acid amide.R.sub.10 is alkyl,R.sub.11 alkyl, alkoxy, alkylthio or phenyl, andY is sulfur.For R: the ester groups are alkenyl, alkynyl, cycloalkyl, optionally substituted phenyl, alkyl interrupted by oxygen or sulfur and optionally substituted by halogen, phenyl, carboxylic acid ester, alkylcarbonyl, optionally substituted phenyl carbonyl, or a C.sub.5 or C.sub.6 heterocycle; the thioester groups are alkyl or optionally substituted phenyl or benzyl; the amide is optionally mono- or di-substituted by alkyl, cycloalkyl, optionally substituted phenyl or benzyl, or may form a C.sub.5 or C.sub.6 heterocyclic ring. The compounds are useful in controlling phytopathogenic fungi.
摘要:
Amino aceto anilides of the formula I shown hereinafter are effective microbicides. They may be used to control fungi on plants or parts of plants or to prevent them from fungi attack.
摘要:
N-Acylated N-phenyl-aminotetrahydro-2-furanones of tthe formula ##STR1## wherein R represents C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy or halogen,R.sub.1 represents C.sub.1 -C.sub.3 -alkyl, C.sub.1 -C.sub.4 -alkoxy or halogen,R.sub.2 represents hydrogen, C.sub.1 -C.sub.3 -alkyl, C.sub.1 -C.sub.4 -alkoxy or halogen,R.sub.3 represents hydrogen or methyl, with the total number of C atoms of the substituents R, R.sub.1, R.sub.2 and R.sub.3 in the phenyl ring not exceeding the number 8,R.sub.4 represents hydrogen or methyl, whileR.sub.5 represents one of the following groups: an alkylthioalkyl or alkoxyalkyl group having 2 to 5 carbon atoms or an alkoxyalkoxymethyl group having a maximum of 6 carbon atoms, a 2-furanyl or 2-tetrahydrofuranyl group optionally substituted by halogen, a 1,2,4-triazolymethyl group, a 1,2-pyrazolylmethyl group, or a group -CH.sub.2 -OR.sub.6 in which R.sub.6 represents a 5- or 6-membered heterocycle having oxygen as the hetero atom are valuable fungicidal active substances. They can be used as fungicidal compositions, particularly for combating phytopathogenic fungi, e.g. against downy mildew on potatoes, tomatoes, grape vines and sugar beet and other plants. The novel compounds have a systemic action.