Arlanxeo Singapore Pte. Ltd.

Trojan Technologies Group Ulc

Adrian Harrison Murray

John Paul Walton

Yuri Lawryshyn

Siva Rajan Sarathy

Paris Neofotistos

Domenico Santoro

John Walton

A process for producing a halogenated isoolefin copolymer involves contacting an unsaturated isoolefin copolymer cement, the cement containing an unsaturated isoolefin copolymer dissolved in an organic solvent, under halogenation conditions with a halogenating agent and an aqueous solution of an organic peracid oxidant to form a two-phase reaction medium having an organic phase and an aqueous phase, the organic peracid oxidant capable of converting hydrogen halide to free halogen. The process leads to higher halogen utilization even when the cement contains significant amounts of water and without the use of an emulsifier.

Halogen recovery in a process for halogenating unsaturated isoolefin copolymer

A continuous process for producing a halogenated isoolefin copolymer involves: polymerizing at least one isoolefin monomer and at least one copolymerizable unsaturated monomer in an organic diluent to produce a halogenatable isoolefin copolymer in an organic medium; contacting the organic medium with an aqueous medium comprising an LCST anti-agglomerant compound; removing or partially removing the organic diluent to produce an aqueous slurry of the halogenatable isoolefin copolymer; dissolving the aqueous slurry in an organic solvent in a closed apparatus to form an unsaturated halogenatable copolymer cement in water, and phase separating the water from the cement in the apparatus; contacting the separated halogenatable isoolefin copolymer cement with a halogenating agent and an aqueous solution of a Corganic peracid oxidant to form a two-phase reaction medium having an organic phase and an aqueous phase, the organic peracid oxidant capable of converting hydrogen halide to free halogen; and, recovering halogenated isoolefin copolymer.

Continuous process for producing halogenated isoolefin copolymer

Halogen recovery in a wet process for halogenating unsaturated isoolefin copolymer

There is described an on-line device for controlling a fluid treatment process configured to inactivate a microorganism in a flow of fluid using ultraviolet radiation and a chemical disinfectant. The device includes: a memory for receiving a calculated database of dose response for the ultraviolet radiation and for the chemical disinfectant for a fluid treatment parameter; means to obtain input data about the fluid treatment parameter from the process; means to compare the input data with calculated database; and means to adjust one or more of the amount ultraviolet radiation and the chemical disinfectant added to the flow fluid in response to a difference between the input data and calculated database. There is also described a process for controlling a fluid treatment process configured to inactivate a microorganism in a flow of fluid using ultraviolet radiation and a chemical disinfectant.

Fluid disinfection with ultraviolet radiation and a chemical disinfectant

Growing community of inventors

London, Canada

Adrian Harrison Murray