Imperial Chemical Industries Limited

Peter G Osborn

Peter F Nicks

Desmond W Osmond

Barrie J Thorpe

Morice W Thompson

Philip Louis Taylor

Patricia Lesley James

Michael George Norton

A water-based autoxidizable coating composition for application to architectural surfaces, fittings or furnishings at ambient temperatures which contains water, a drier to promote autoxidation and a water-soluble autoxidizable film-forming copolymer which contains 0.5 to 7 wt % of acrylic acid, 50 to 50 wt % of either a hydroxy acrylate chosen from hydroxy ethyl or hydroxyisopropyl acrylate or alternatively a polyethoxylate (meth)acrylate and 30 to 50 wt % of an autoxidizable ester of copolymerized acrylic acid in which the esterifying moieties are 3-allyloxy-2-hydroxypropyl or the methallyl analogue. Also an autoxidizable copolymer of the above composition. The coating composition laps well yet is water-soluble and resistant to both long term and short term damage by water. Also the copolymer for use in the compositions.

Water-based autoxidisable coating composition

Stable, fluid, mouldable and curable compositions are described from which may be fabricated composite materials, of improved mechanical properties, comprising an organic polymer matrix and a particulate inorganic reinforcing phase dispersed in and bonded to the matrix. The fluid compositions comprise (A) a polymerizable organic liquid having a viscosity not greater than 50 poise at the moulding temperature, (B) inorganic filler particles of defined size constituting at least 20% by volume, and optionally up to 90% by volume, of the total composition, and (C) a defined polymeric dispersant whereby the filler particles are stably dispersed in the polymerizable liquid. The generally low viscosity of the curable compositions enables them to be cast by simple techniques and polymerization of the component (A) yields the above-described composite materials.

Inorganic reinforcing phase dispersed and bonded to polymer matrix

Stable, fluid, moldable and curable compositions are described from which may be fabricated composite materials, of improved mechanical properties, comprising an organic polymer matrix and a particulate inorganic reinforcing phase dispersed in and bonded to the matrix. The fluid compositions comprise (A) a polymerizable organic liquid having a viscosity not greater than 50 poise at the molding temperature, (B) inorganic filler particles of defined size constituting at least 20% by volume, and optionally up to 90% by volume, of the total composition, and (C) a defined polymeric dispersant whereby the filler particles are stably dispersed in the polymerizable liquid. The generally low viscosity of the curable compositions enables them to be cast by simple techniques and polymerization of the component (A) yields the above-described composite materials.

Composite materials

A method of dispersing oil in water, particularly useful in oil slick dispersion, secondary oil recovery and tar-sand oil recovery comprises contacting the oil and water with an alkyd resin in which one component of the resin is the residue of a water-soluble polyalkylene glycol such as a polyethylene glycol.

Method of dispersing oil in water

A process is described for producing a dispersion of a condensation polymer in a hydrocarbon or chlorinated hydrocarbon liquid in which the polymer is insoluble, the disperse particles of polymer incorporating a pigment, filler or like modifying agent. At least one of the reactants from which the polymer is to be derived is heated in the liquid in the form of the liquid disperse phase of an emulsion in that liquid, made with the aid of a specified emulsifying agent, and the modifying agent is dispersed in that liquid disperse phase prior to completion of the polymer-forming reaction.

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Bourne End, United Kingdom

Peter G Osborn