Abstract: The present invention relates to a process for the gas-phase (co-)polymerisation of olefins in a fluidised bed reactor using a Ziegler-Natta type catalyst characterised in that the polymerisation is performed in the presence of a monohalogenated hydrocarbon compound.

Abstract: The invention concerns a method for converting hydrocarbon-containing gases into hydrocarbon-containing liquids wherein the Fischer-Tropsch process is implemented, said Fischer-Tropsch process producing hydrocarbon-containing liquids and a residue gas comprising at least hydrogen, carbon monoxide, carbon dioxide and hydrocarbons having a carbon number not more than 6, wherein the residue gas is subjected to a separation method producing: at least one gas stream comprising for the major part hydrogen; at least one stream comprising for the major part methane; at least one gas stream comprising for the major part inerts (carbon dioxide, nitrogen, argon) and hydrocarbons having a carbon number not less than 2.

Abstract: The present invention relates to a process for the gas-phase (co-)polymerisation of olefins in a fluidised bed reactor using a Ziegler-Natta type catalyst characterised in that the polymerisation is performed in the presence of a monohalogenated hydrocarbon compound.

Abstract: A process is presented for the preparation of a latex by the emulsion polymerization at a temperature of between 30 and 90 C. of at least one ethylenically unsaturated monomer in the presence of at least one surfactant and of a seed of polymer particles with a diameter of between 200 and 450 nm. The seed particles represent from 5-25% by weight of the total weight of the monomer and seed. The polymerization is initiated by a mixed water-soluble/fat-soluble system. Also included are lattices obtained from this process.

Abstract: A process is presented for the preparation of a latex by the emulsion polymerization at a temperature of between 30 and 90 C. of at least one ethylenically unsaturated monomer in the presence of at least one surfactant and of a seed of polymer particles with a diameter of between 200 and 450 nm. The seed particles represent from 5-25% by weight of the total weight of the monomer and seed. The polymerization is initiated by a mixed water-soluble/fat-soluble system. Also included are lattices obtained from this process.

Abstract: The invention concerns a latex consisting of polymers dispersed in a bimodal distribution, having a non-volatile matter content at 55 % and low viscosity. Said latex is obtained by emulsion polymerisation of at least a monomer in the presence of a seed of polymer-based particles with a diameter ranging between 200 and 450 nm. The invention also concerns the use of said latex in various applications such as pressure sensitive adhesives, floor bonding adhesives, tile bonding adhesives, additives for mortar, sealants, sealing joints.