Abstract: Di-alkyl compounds of a Group 2b metal is reacted with an alkyl halide in the presence of magnesium to obtain the di-alkyl compound of the Group 2b metal and magnesium halide. Di-alkyl compound-containing products are obtainable from the resulting product mixture having a halogen content of less than 1 ppm, a silicon content of less than 1 ppm and a Group 3a metal content of less than 1 ppm.

Abstract: A process for selectively reducing the 5-isopropenyl-2-norbornene content of a dicyclopentadiene composition by contacting a 5-isopropenyl-2-norbornene containing DCPD composition with an acid clay.

Abstract: In the deposition of metal on solid substrates by a Metal Organic Chemical Deposition process, an improvement comprises the provision of vapors of a precursor of the metal by passing an inert carrier gas through a mixture of the metal precursor and a liquid having a vapor pressure at ambient temperature lower than that of the metal precursor and in which the metal precursor is at least partially soluble.

Abstract: Compounds of the formula ##STR1## in which A is nitrogen or CR.sup.5 ;R.sup.1, R.sup.2 and R.sup.5 each independently are hydrogen, or halogen, formyl, cyano, carboxy or azido, or optionally substituted alkyl, alkenyl, alkynyl, cycloalkyl, alkoxy, alkenyloxy, alkynyloxy, aryloxy, alkylthio, alkenylthio, alkynylthio, arylthio, alkylcarbonyl, alkoxycarbonyl, amino, aminoxy or dialkyliminoxy;R.sup.3 is a hydrogen, or optionally substituted alkyl, alkenyl, alkynyl, cycloalkyl, heterocyclic, aralkyl or aryl; andR.sup.4 optionally substituted alkyl, aralkyl, aryl or heterocyclyl; and salts thereof, have herbicidal properties. The invention also provides processes for their preparation and their use as herbicides.

Abstract: A butenone compound having the general formula I: ##STR1## wherein R.sup.1 represents a pyridyl or thiazolyl group bearing one or more substituents independantly selected from halogen atoms, alkyl, alkoxy, alkylthio, haloalkyl, cyano, alkoxycarbonyl, alkylamino and dialkylamino; R.sup.2 represents a hydrogen atom, an alkyl group or an alkylcarbonyl group; R.sup.3 represents an alkyl group; R.sup.4 represents a haloalkyl group; X represents a sulphur atom or a group of formula N--R.sup.5, wherein R.sup.5 represents a hydrogen atom, an alkyl group or an alkylcarbonyl group; and n is 0 or 1, methods for their preparation and their use in combating pests.

Abstract: Compounds of the general formula: ##STR1## ps wherein R.sub.1 and R.sub.2 each independently represents a halogen atom or an alkyl, alkoxy, haloalkyl, haloalkoxy, alkoxycarbonyl, alkenoxy, cyano or nitro group; R.sub.3 and R.sub.4 each independently represents a hydrogen atom or an alkyl group; R.sub.5 represents a hydrogen atom, or an alkyl, alkoxy or alkoxycarbonylalkyl group; X and Y each independently represents an oxygen or sulphur atom or a group N-R, in which R is a hydrogen atom or an alkyl group; n is 0-3; r is 0 or 1; m is 0-4; and A or B represents a group of the general formula: wherein R.sub.6 represents a hydrogen or halogen atom, or an alkyl group; and R represents a halogen atom or an alkyl group; the other of A and B being a hydrogen atom or as for R.sub.1 or R.sub.2, have useful pesticidal activity.

Abstract: Certain 2-chloropyridine derivatives, which are useful as starting materials for the preparation of various herbicides and fungicides, are prepared by cyclization of 1,3-butadiene derivatives in the presence of hydrogen chloride.

Abstract: A process is described for the preparation of an aluminum-strontium master alloy suitable for use as structure refiner during the solidification of molten aluminum-silicon alloys, comprising atomizing a stream of molten alloy containing aluminum and 5 to 35% by weight of strontium and collecting atomized particles as solid material on a collecting surface.

Abstract: The invention provides cyclohexanone derivatives of the general formula ##STR1## in which n represents an integer from 0 to 5; each R represents a halogen atom, nitro, cyano, hydroxyl, alkyl, haloalkyl, alkoxy, haloalkoxy, amino, alkylamino, dialkylamino, alkoxycarbonyl, carboxyl, alkanoyl, alkylthio, alkylsulphinyl, alkylsulphonyl, carbamoyl, alkylamido, cycloalkyl or phenyl group; R.sup.1, R.sup.2 and R.sup.3 independently represent a hydrogen atom or an alkyl group; R.sup.6 and R.sup.7 together represent a single carbon-carbon bond or an epoxy group; and R.sup.8 represents a hydrogen atom or a hydroxyl group; with the proviso that when R.sup.6 and R.sup.7 together represent an epoxy group then R.sup.8 represents a hydrogen atom; and a process for their preparation. Compounds of formula I are useful as intermediates in the preparation of certain fungicidally active cyclopentane derivatives.

Abstract: Process for the preparation of a substantially homogeneous alpha phase copper-nickel-tin alloy comprising copper and 4-18% by weight of nickel and 3-13% by weight of tin, comprising atomizing a molten alloy having the before-indicated composition and collecting atomized particles on a collecting surface in such a way that solid collected material is obtained having a temperature, of at least 700.degree. C., followed by quick cooling of the collected material to a temperature below 300.degree. C.The alloy thus obtained may be hardened, preferably after shaping, by spinodal decomposition.

Abstract: The invention provides piperidine derivatives of the general formula ##STR1## or an acid-addition salt or metal salt complex thereof, in which R represents a hydrogen atom or an optionally substituted alkyl, alkenyl, alkynyl, alkoxy, cycloalkyl, aryl, arylcarbonyl, heterocyclyl or heterocyclyloxy group; R.sup.1 represents an optionally substituted alkyl, phenyl, benzyl or cycloalkyl group; R.sup.2 represents a hydrogen atom or an optionally substituted alkyl group; one of W and X represents --CH.sub.2 --, --CH.sub.2 CH.sub.2 -- or --O--, the other of W and X being --CH.sub.2 -- or --CH.sub.2 CH.sub.2 or X represents a single chemical bond; m is 0 or 1 and n represents an integer from 0 to 3; processes for their preparation; compositions containing such compounds and their use as fungicides.

Abstract: The invention provides furanone derivatives of the general formula ##STR1## in which R.sup.1 represents a halogen atom or an optionally substituted alkyl or alkoxy group, R.sup.2 represents a halogen atom or an optionally substituted alkyl, aryl or heterocyclyl group, R.sup.7 represents a C.sub.1-4 alkyl group and Q represents an optionally substituted morpholino or amino group; processes for their preparation; compositions containing such compounds and their use as fungicides.

Abstract: The invention concerns a process for preparing magnesia having reduced hydration tendency, wherein magnesia particles are treated with a solution of an inorganic acid, an organic acid an/or salts thereof, as well as hydration resistant magnesia thus obtained, a dry mixture for preparing magnesia based castables and magnesia based castables containing magnesia thus obtained.

Abstract: The invention provides cyclohexenol derivatives of the general formula ##STR1## in which n represents an integer from 0 to 5; each R represents a halogen atom, nitro, cyano, hydroxyl, alkyl, haloalkyl, alkoxy, haloalkoxy, amino, alkylamino, dialkylamino, alkoxycarbonyl, carboxyl, alkanoyl, alkylthio, alkylsulphinyl, alkylsulphonyl, carbamoyl, alkylamido, cycloalkyl or phenyl group; and R.sup.1, R.sup.2 and R.sup.3 independently represent a hydrogen atom or an alkyl group, with the provisos that when R.sup.1, R.sup.2 and R.sup.3 all represent a hydrogen atom then n is not 0 and, when R.sup.1, R.sup.2 and R.sup.3 all represent a hydrogen atom and n is 1, R does not represent a fluorine atom substituted at the 4-position of the phenyl ring; and a process for their preparation. Compounds of formula I are useful as intermediates in the preparation of certain fungicidal active cyclopentane derivatives.

Abstract: Compounds of the formula ##STR1## in which A is nitrogen or CR.sup.5 ;R.sup.1, R.sup.2 and R.sup.5 each independently are hydrogen, or halogen, formyl, cyano, carboxy or azido, or optionally substituted alkyl, alkenyl, alkynyl, cycloalkyl, alkoxy, alkenyloxy, alkynyloxy, aryloxy, alkylthio, alkenylthio, alkynylthio, arylthio, alkylcarbonyl, alkoxycarbonyl, amino, aminoxy or dialkyliminoxy;R.sup.3 is a hydrogen, or optionally substituted alkyl, alkenyl, alkynyl, cycloalkyl, heterocyclic, aralkyl or aryl; andR.sub.4 optionally substituted alkyl, aralkyl, aryl or heterocyclyl; and salts thereof, have herbicidal properties. The invention also provides processes for their preparation and their use as herbicides.

Abstract: The invention provides a fungicidal composition comprising at least one systemic, contact and/or soil fungicide and at least one acrylic acid morpholide derivative of the general formula ##STR1## in which R.sub.1 represents a hydrogen, chlorine or bromine atom, a trifluoromethyl, trifluoromethoxy, C.sub.3 -C.sub.7 alkyl, C.sub.3 -C.sub.5 alkoxy, C.sub.3 -C.sub.6 alkenyl, HClFC--CF.sub.2 O--, HClC.dbd.CClO--, cyclohexyl, cyclopentenyl, cyclohexenyl, phenyl, 4-chlorophenyl, 4-ethylphenyl, 4-chlorobenzyl or 4-chlorophenylthio group or a phenoxy group optionally substituted by one or more substituents selected from fluorine and chlorine atoms and methyl and ethoxycarbonyl groups and R.sub.2 represents a hydrogen atom, or R.sub.1 represents a hydrogen atom and R.sub.2 represents a 3-phenoxy group.

Abstract: The invention provides a process for the preparation of cyclopentanediol derivatives of the general formula ##STR1## in which n represents an integer from 0 to 5; each R represents a halogen atom, nitro, cyano, hydroxyl, alkyl, haloalkyl, alkoxy, haloalkoxy, amino, alkylamino, dialkylamino, alkoxycarbonyl, carboxyl, alkanoyl, alkylthio, alkylsulphinyl, alkylsulphonyl, carbamoyl, alkylamido, cycloalkyl or phenyl group; and R.sup.1, R.sup.2 and R.sup.3 independently represent a hydrogen atom or an alkyl group; which comprises reacting a cyclopentanol derivative of the general formula ##STR2## with a reducing agent. The invention also provides the cyclopentanol derivative intermediates of formula II per se and a process for their preparation. Compounds of formulae I and II are useful as intermediates in the preparation of certain fungicidally active cyclopentane derivatives.

Abstract: A process for preparing an olefin polymerization catalyst which comprises halogenating a magnesium-di-(3- or 4-halo- or 3- or 4-C.sub.1 to C.sub.8 alkoxy-phenoxide) with a halide of tetravalent titanium in the presence of a halohydrocarbon, recovering the solid reaction product from the reaction mixture and combining the solid reaction product with an organo aluminium compound and an electron donor.

Abstract: The invention relates to a method of heat processing particles of glass. A first current of a mixture of a combustible gas and a gas capable of oxidizing the combustible gas is introduced into a substantially cylindrical chamber from its lower end. The combustible gas is ignited to form a flame in which the gases have a speed of less than 10 m/s. The resulting flame creates a heat processing zone in the chamber. A quenching zone is provided by a second current of gas introduced into the chamber adjacent the chamber side wall such that it swirls around the flame. Particles of glass are then introduced at the lower end of the chamber and these particles contact the flame in the heat processing zone and are then directed to the quenching zone where they are hardened and from which they are collected.

Abstract: Compounds of formula I ##STR1## wherein A is nitrogen or a group CR.sup.5 ;each of R.sup.1, R.sup.2 and R.sup.5 is, independently, hydrogen, halogen, formyl, cyano, carboxy, azido or optionally substituted alkyl, alkenyl, alkynyl, cycloalkyl, alkoxy, alkenyloxy, alkynyloxy, aryloxy, alkylthio, alkenylthio, alkynylthio, arylthio, alkylcarbonyl, alkoxycarbonyl, amino, aminoxy or dialkyliminoxy; andR is ##STR2## in which R.sup.3 is hydrogen, optionally substituted alkyl, alkenyl, alkynyl, cycloalkyl, heterocyclic or aryl, or COR.sup.8, R.sup.8 being hydroxy, alkoxy, carboxy, alkoxycarbonyl, amino or mono- or di- alkylamino; andR.sup.4 is a group COR.sup.6 wherein R.sup.6 is hydrogen, halogen, hydroxy, or optionally substituted alkoxy, alkenyloxy, alkynyloxy, cycloalkoxy, aryloxy, alkylthio, alkenylthio, alkynylthio, arylthio, aminoxy, dialkyliminoxy or amino, or R.sup.6 is a group OR.sup.7 in which R.sup.7 is an optionally substituted heterocyclic ring; or ##STR3## each of R.sup.9 and R.sup.