Orica Australia Pty Ltd

The University of Sydney

Duluxgroup (Australia) Pty Ltd.

Barbara Aurelia Czapski

Karen Lai-on Seligman

Algirdas Kazimieras Serelis

Deepak Ajinkya

Christopher Henry Such

Ezio Rizzardo

Bruce Leary

Brian Stanley Hawkett

Robert Goulston Gilbert

Karen Lai-On Seligman

Christopher James Ferguson

Robert John Hughes

Edna Olejnik, Legal Representative

Philip J A Ritchie

Philip John Allan Ritchie

The invention relates to solid polyester granules of the type used as matting agents in paints. In particular, the invention relates to a new redox initiating system for use in a suspension polymerization process that is used to manufacture the solid polyester granules, to a process for the preparation of the solid polyester granules, and to paint compositions containing the solid polyester granules.

Initiating system for solid polyester granule manufacture

The invention provides a method for preparing an aqueous dispersion of polymer particles comprising the following steps: (i) preparing a dispersion having a continuous aqueous phase, a dispersed organic phase comprising one or more ethylenically unsaturated monomers, and an amphiphilic RAFT agent as a stabilizer for said organic phase, and (ii) polymerizing said one or more ethylenically unsaturated monomers under the control of said amphiphilic RAFT agent to form said aqueous dispersion of polymer particles, novel amphiphilic RAFT agents for use in this method, novel RAFT agents useful in making these amphiphilic RAFT agents and methods for their manufacture.

Aqueous dispersions of polymer particles

This invention relates to a process of preparing vesiculated granules of crosslinked carboxylated polyester resin utilising a particular class of non-alkylphenolethoxylate surfactant.

Vesiculated polyester granules

The invention relates to the use of a diacyl peroxide in combination with an aromatic amine of formula (I) where R is C -C alkyl having at least one hydroxy substituent or &mdash;(CH&prime;CHR&prime;&mdash;O) H where n is 1 to 10 and each R&prime; is independently selected from H and C -C alkyl; R is C -C alkyl optionally substituted with one or more hydroxy groups, or &mdash;(CHR&prime;CHR&prime;&mdash;O) H where n&equals;1 to 10; and each R is independently selected from H and C -C alkyl; and Ar is an optionally substituted aryl group; as a redox initiating system in a process for the manufacture of polyester granules by suspension polymerisation. This invention also relates to a process for preparing solid polyester granules using such a redox initiating system.

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Mount Waverley, Australia

Algirdas Kazimieras Serelis