Abstract: The present invention relates to compositions for elastomeric compounds for tyres, comprising monotetrazole compatibilizing agents characterised by precise activation temperatures, tyre components and tyres for vehicle wheels which comprise them. Advantageously, the present monotetrazole compatibilizing agents allow the breaking properties of the compounds to be improved while maintaining a high compatibilisation of the filler.

Abstract: The present invention relates to compositions for elastomeric compounds for tyres, comprising polytetrazole cross-linking compounds characterized by precise activation temperatures, tyre components and tyres for vehicle wheels which comprise them. Advantageously, the present polytetrazole cross-linking agents give lower hysteresis and retention of the modulus of the compounds even under stress.

Abstract: The present invention relates to new semiconducting compounds having at least one optionally substituted phenazine moiety. The compounds disclosed herein can exhibit high carrier mobility and/or efficient light absorption/emission characteristics, and can possess certain processing advantages such as solution-processability and/or good stability at ambient conditions.

Abstract: A process for preparing pyrido-benzothiazine derivatives having the following general formula: ##STR1## in which R is H or a C.sub.1 -C.sub.6 alkyl or a C.sub.1 -C.sub.6 fluoroalkyl, and R.sub.1 is N-alkyl-3-pyrrolidinalkylamine with C.sub.1 to C.sub.6 alkyls or ##STR2## where R.sub.2 is a C.sub.1 -C.sub.6 alkyl or a C.sub.2 -C.sub.6 alkenyl or an arylalkyl group, possibly substituted by halogen, hydroxy or keto-groups, both in the racemic form and in the optically active form. The process for the preparation of derivatives of formula (I) starts with a first reaction cycle starting from 2,4-difluoro-3-chloronitrobenzene. Said derivatives possess a high antibacterial activity as well as a high bioavailability to tissues. The invention also refers to pharmaceutical compositions containing them as active components.

Abstract: Pyrido-benzothiazine derivatives having the following general formula: ##STR1## in which R is H or a C.sub.1 -C.sub.6 alkyl or a C.sub.1 -C.sub.6 fluoroalkyl, and R.sub.1 is N-alkyl-3-pyrrolidinalkylamine with C.sub.1 to C.sub.6 alkyls or ##STR2## where R.sub.2 is a S.sub.1 -C.sub.6 alkyl or a C.sub.2 -C.sub.6 alkenyl or an arylalkyl group, possibly substituted by halogen, hydroxy or keto-groups, both in the racemic form and in the optically active form.The invention also comprises the process for the preparation of derivatives of formula (I) starting from 2.4-difluoro-3-chloronitrobenzene.Said derivatives possess a high antibacterial acitvity as well as a high bioavailability to tissues; the invention also refers to pharmaceutical compositions containing them as active components.