Abstract: A method of synthesizing biodegradable aliphatic polyesters from one or more aliphatic dicarboxylic acids or diesters of the said acids and one or more linear or branched aliphatic glycols, comprising a first esterification or transesterification step and a second deglycolation under vacuum step, in which the catalyst is monobutylstannoic acid both for the esterification or transesterification step and for the deglycolation under vacuum step.

Abstract: A binary digital image feature extracting process whereby a number of elementary portions of predetermined shape are defined in a binary digital matrix; in each elementary portion, a number of analysis directions are defined at a predetermined angle in relation to the edges of the elementary portion; a number of paths are defined, each formed by an orderly set of pixels arranged at least approximately parallel to a respective analysis direction; for each path, the pixels presenting a predetermined characteristic definable by one or more whole numbers are determined; the numbers are converted by a nonlinear function to calculate a number of partial scores which are then grouped to give an overall score for each path; and the overall scores of the various paths are grouped according to the analysis direction to calculate a directional feature for each analysis direction.

Abstract: A process is described for the preparation of aromatic urethanes in which organic carbonate in a stoichiometric quantity or in a quantity higher than the stoichiometric value is reacted with an aromatic amine operating in the presence of a carbamation catalyst, wherein this catalyst is selected from zinc and/or copper carbonate hydroxide.The process gives high yields and selectivity in the useful reaction product.

Abstract: This invention provides a process for the selective production of cumene comprising reacting benzene with propylene in the presence of a type-Y zeolite modified by treatment with a phosphorous compound. This invention also provides a process for the transalkylation of a polyalkylated benzene which comprises reacting the polyalkylated benzene in the presence of benzene and a type-Y zeolite modified by treatment with a phosphorous compound.

Abstract: A process for preparing a metal catalyst for the hydrogenation of oils and ats comprises causing a soluble Ni salt to react with an alkylsilane and an organic orthosilicate, so as to generate the catalyst support in Situ.

Abstract: Photochromic compounds belonging to the class of spiro-pyrans, having the general formula (I): ##STR1##

Abstract: A description follows of oximic derivatives with a fungicide activity, for agricultural use, having the formula (I): ##STR1## wherein: A, B, D, are N, or .dbd.C--G;G is H, halogen, NO.sub.2, CN, --COOR.sub.4, C.sub.1 -C.sub.6 (halo)alkylR.sub.1, R.sub.2, R.sub.4 and R.sub.5, are C.sub.1 -C.sub.6 (halo)alkyl;R.sub.3 is H, C.sub.1 -C.sub.6 (halo)alkyl or --COOR.sub.5 ;W is C.sub.2 -C.sub.10 alkylene;L represents O or S;Y represents phenyl, naphthyl, heterocycle, substituted alkyl.

Abstract: A description follows of oxa(thia)diazol- and triazol-ones(thiones), with a iticide and insecticide activity, having the general formula ##STR1## wherein: Y=0, S; Z=0, S, NCH.sub.3, one of the two substituents P and Q is an ortho-substituted phenyl and the other a substituted benzyl.

Abstract: Arylacetic ester derivative-based compounds having the general formula (I): ##STR1##

Abstract: Compounds based on 3,4-diaryl-(5H)-furan-2-one, with fungicidal activity, having the general formula (I): ##STR1##

Abstract: Viscosity index improver and friction modifier additive constituted by a on-containing poly-(alkyl)-acrylate, process for preparing said additive and use of said additive in the formulation of lubricating oils.

Abstract: Salts of triazinic compounds with phosphorus oxyacids, having the general rmula (I): ##STR1## obtained by salifying oligomeric derivatives of 2,4,6-triamino-1,3,5-triazine with a phosphorus-containing acid.The compounds with general formula (I) find use in particular as flame-retardant additives.

Abstract: Compounds based on derivatives of pyrrole[2,1-b]- and imidazo[2,1-b-]thiazoles, with a fungicidal activity, having the general formula (I): ##STR1##

Abstract: Self-extinguishing, thermoplastic, polymeric compositions comprising a phhorus derivative and condensation compounds obtained by polymerizing polyaminic compositions essentially constituted by derivatives of 2,4,6-triamino-1,3,5-triazine, having the general formula (I): ##STR1## with aldehydes, preferably formaldehyde.

Abstract: Self-extinguishing polymeric compositions comprising an ammonium polyphoste having the general formula:(NH.sub.4).sub.n+2 P.sub.n O.sub.3n+1microencapsulated with condensation compounds obtained by polymerizing polyaminic compositions essentially constituted by derivatives of 2,4,6-triamino-1,3,5-triazine, having the general formula (II): ##STR1## with aldehydes, preferably formaldehyde.

Abstract: A process is described for the separation of the optical isomers of alphayl- or alpha-aryloxy- carboxylic acids by means of the stereoselective hydrolysis of racemic alkyl esters of the above acids in the presence of bacteria or their enzymes, selected from the species Brevibacterium, Bacteridium, Micrococcus, and Bacillus.

Abstract: Streptomyces spp. NCIMB 40227 and its use in the treatment of the agrarian ultivations to increase the growth and production of plants are disclosed.

Abstract: Derivatives of triazinylphosphonic acid having the general formula (I): ##STR1## obtained by means of the reaction of condensation of a cyanuric halide w an ester of phosphorous acid and subsequent reaction of substitution with a polyamine and an amine.

Abstract: There are described new pyridazinones endowed with acaricide and insecticide action, having general formula (I): ##STR1## wherein X is halo or alkyl, Z is alkylene and R is substituted cyclohexyl or cyclohexenyl.

Abstract: Heterocyclic derivatives with a fungicidal activity, for agricultural use, aving the formula (I): ##STR1## wherein: A, B, D, are N, or .dbd.C--G;G is H, halogen, NO.sub.2, CN, --COOR.sub.5, C.sub.1 -C.sub.6 (halo)alkylR.sub.1, R.sub.2 and R.sub.5, are C.sub.1 -C.sub.6 (halo)alkyl;R.sub.3 and R.sub.4 are H, C.sub.1 -C.sub.2 alkyl, --COOR.sub.6, CN or a carbon-carbon bond;R.sub.6 is C.sub.1 -C.sub.6 alkyl;Y, W, are H, halogen, C.sub.1 -C.sub.6 alkyls, phenyls, heterocycles.