Abstract: Process for obtaining mixtures of phosphoric mono- and diesters having the formula: [Rf—CF2—(CH2)q—Z]w—P(O)(OH)3−w  (I) HO—[OH(O)P—Z—(CH2)q—CF2—O—Rf—CF2—(CH2)q—Z]v—P(O)(OH)2  (II) wherein: w=1-2; v=1-6; q=1-20; Z=O(C2H4O)p—, O(CH2)n—O—, O(C3H6O)p—, S(C2H4O)p—, S(C3H6O)p—; n=1-20; p=1-5; Rf represents a (per)fluoropolyether chain; Rf in formula (I) is a monofunctional perfluoropolyether chain wherein the chain end group is selected from: CF3O—, C2F5O—, C3F7O—, Cl(C3F6O)—, H(C3F6O)—.

Abstract: Cyclic phosphazene compounds of formula (I): 1

Abstract: A process to obtain fluoropolyoxyalkylenes having the structure: T—O—(CF2CF(CF3)O)n−1—(CF(CF3)O)m—CF2—CH2OH  (I) wherein: T=C1-C3 perfluoroalkyl containing one Cl atom; n=an integer from 1 to 15; m/n=0-0.5, m+n such to have a number molecular weight in the range 280-4,000; said process comprising: a) the gradual addition of a metal hydride in admixture with a solvent to an ester precursor having the structure T—O—(CF2CF(CF3)O)n−1—(CF(CF3)O)m—CF2—COOR  (II)  wherein R=C1-C20 alkyl, or aromatic, cycloalkyl or heterocyclic residue, b) the hydrolysis of the reaction mixture obtained in step a) with an aqueous acid solution, the subsequent separation from the obtained organic phase of the compounds of structure (I).

Abstract: A process for preparing perfluoropolyoxyalkylenes with hydroxyl end groups having structure: T1—CFW1—O—Rf—CFW2—T2  (I) wherein: T1, T2, are selected from —CH2OH, —F, —CF3, —CF2CF3 with the proviso that at least one of T1 and T2 is —CH2OH; W1 and W2 are selected from F, CF3; Rf is a perfluoropolyoxyalkylene chain having a number average molecular weight 500-10,000 comprising one or more units of the type —CF2CF2O—, —CF2O—, —C3F6O—, —CF2(CF2)zCF2O— (z=1,2); —CR4R5CF2CF2O— with R4 and R5 selected from H, Cl, perfluoroalkyl group; said process comprising the following steps: a) adding an ester precursor having structure (I) and T1, T2 end groups selected from —F, —CF3, —CF2CF3, —COOR (R=linear or branched alkyl group having a number of C atoms from 1 to 5), with the proviso that at least one of T1 and T2 is —COOR, in a reaction mixture f

Abstract: Perfluoro-4-alkyl-1,3-dioxoles having the general formula 1

Abstract: A process to obtain fluoropolyoxyalkylenes having the structure:

Abstract: Perfluoro-4-alkyl-1,3-dioxoles having the general formula wherein Rf is a perfluoroalkylic radical having from 1 to 5 carbon atoms, allow to prepare copolymers with Tg higher than those of the copolymers containing the same molar percentage of fluorinated dioxoles of the art.

Abstract: An electrically alterable semiconductor memory includes at least two memory sectors the content of which is individually alterable, and a control circuit for controlling operations of electrical alteration of the content of the memory, permitting the selective execution of an operation of electrical alteration of the content of one of the memory sectors with the possibility of suspending the execution to permit read access to the other of the memory sectors. The control circuit is also capable of permitting, during the suspension, an operation of burst mode or page mode reading of the content of the other memory sector.

Abstract: Process for obtaining mixtures of phosphoric mono- and diesters having the formula:

Abstract: An architecture handles internal voltages in a non-volatile memory array which is split into at least first and second mutually independent banks. The architecture includes first and second pluralities of generators for generating at least one of the internal voltages, which are separate from each other and connected to the first and second banks, respectively, of the nonvolatile memory array; and a control system connected to the pluralities of generators to handle the correct activation of the different generators in the different conditions of the memory array operation.

Abstract: A semiconductor device includes at least two pads for the input of external signals and/or for the output of signals from said semiconductor device, at least two uncoupling buffers each connected to each one of said pads, at least one multiplexer connected to said pads by means of said uncoupling buffers and at least one memory element suitable to generate a configuration signal operating on said multiplexer and said uncoupling buffers to selectively enable one or the other of said pads.

Abstract: Copolymers of perfluoro-4-alkyl-1,3-dioxoles having the general formula wherein Rf is a perfluoroalkylic radical having from 1 to 5 carbon atoms, allow to prepare copolymers with Tg higher than those of the copolymers containing the same molar percentage of fluorinated dioxoles of the art.

Abstract: Fluorinated triazinic compounds having the formula: wherein Z=T—Y, with T=—(CH2)q, —SO2, —CO, q= is an integer from 1 to 20; Y=O—, O(C2H4O)p—, O(CH2)n—NR—, O (CH2)n—O—, O(C3H6O)p—, NR—, S—, S(C2H4O)p—, S(C3H6O)p—; wherein R=H, alkyl from 1 to 10 C atoms; n is an integer from 1 to 20; p is an integer from 1 to 5; Rf represents a linear or branched fluoroalkyl chain or a (per)fluoropolyether chain. X is selected from: Cl; Rf—CF2—Z; CF3—Z. Use of these triazinic compounds or of their formulations for the treatment of natural or synthetic fiber textiles.

Abstract: Hydro-2,2-difluoroalkylvinylethers having the formula CF2═CH—O—RA  (I) wherein RA is a radical containing fluorine, optionally containing halogens such as Cl, Br, I, hydrogen, functional groups CM, COOR′, CON(R′)2, SO2OR′, m wherein R′ is a C1-C5 alkyl, RA being selected from the following: a linear or branched, saturated or unsaturated C2-C20 fluoroalkyl, or a saturated or unsaturated C4-C6 fluorinated cyclic group wherein optionally from 1 to 2 carbon atoms are substituted with oxygen atoms, or a linear, branched saturated or unsaturated, C3-C15 fluorooxyalkyl group, containing one or Core oxygen atoms.

Abstract: A process for preparing perfluoropolyoxyalkylenes with hydroxyl end groups having structure:

Abstract: A CMOS twin-tub negative voltage switching architecture is for a non-volatile memory device and includes a negative voltage multiplier for generating a increased voltage value starting from a single main power supply. A voltage regulator feedback is connected to the voltage multiplier for regulating the generated negative voltage value; and a plurality of independent switch circuits each one receiving as an input the negative voltage value and producing as an output a predetermined local negative voltage.

Abstract: A toner cartridge for supplying toner to a replenishment apparatus of an electrophotographic imaging device has an elongated cylindrical container filled with toner. The container has a longitudinal axis, an open end and a closed end. An end cap is adapted and arranged to close the open end and to accommodate relative rotational motion between the container and the end cap. The end cap has a flange portion defining an open end terminating in an end portion having an edge. An elastomeric seal is provided to effect a positive, relatively low-friction toner seal between a relatively rotating container and the end cap. The seal in an exemplary embodiment comprises an elastomeric band, which is sized properly to affix onto the outside diameter of the cap end portion, with a portion of the seal extending beyond the cap end portion.