Abstract: An autoxidisable aqueous varnish composition comprising: a) film forming polymer latex binder system comprising, on a non-vol basis, i) 40-60 wt % soft autoxidisable polymer particles of Fox Tg less than 5° C., ii) 60-40 wt % hard polymer particles of Fox Tg at least 40° C. wherein the soft autoxidisable polymer particles comprise at least 60 wt % gel b) a carrier liquid comprising at least 50 wt % water and an amount of a volatile organic material of from 0 to 2 wt % when calculated on the total liquid varnish composition, c) optionally pigment at a pigment to binder weight ratio up to 0.05:1 calculated on a non-vol basis.

Abstract: Coating compositions are provided which may be applied from aqueous systems and contain binders which are autoxidisable to produce rapid drying hard coatings, preferred binders are based on polymers derived from monomers obtained by the reaction of drying oil fatty acids and unsaturated monomers. The polymers contain microgels, have low Tg and contain residual unsaturation; preferred copolymers also contain amide groups. The drying of the coating compositions can be accelerated by the use of metal dryers and have been found to enable the use of particularly low levels of vanadium dryers.

Abstract: Coating compositions are provided which may be applied from aqueous systems and contain binders which are autoxidisable to produce rapid drying hard coatings, preferred binders are based on polymers derived from monomers obtained by the reaction of drying oil fatty acids and unsaturated monomers. The polymers contain microgels, have low Tg and contain residual unsaturation; preferred copolymers also contain amide groups. The drying of the coating compositions can be accelerated by the use of metal dryers and have been found to enable the use of particularly low levels of vanadium dryers.

Abstract: A thickened aqueous coating composition (preferably paints and the like or adhesives) containing a film-forming polymeric binder which produces dried coatings having less sensitivity to water by using a thickener which is autoxidisable. Preferred autoxidisable moieties are provided by derivatives of long chain fatty acids of the type used in alkyd paints and association is the preferred thickener mechanism. The moieties may form part of a compound which can take part in a copolymerisation to form a polymeric backbone for the thickener and if the compound is not very soluble in water, the copolymerisation mixture is subjected to intensive agitation to form droplets of less than 500 nm which compensates for the lack of solubility. The thickener may serve as its own binder if sufficient amounts are used.

Abstract: A thickened aqueous coating composition (preferably paints and the like or adhesives) containing a film-forming polymeric binder which produces dried coatings having less sensitivity to water by using a thickener which is autoxidizable. Preferred autoxidizable moieties are provided by long chain fatty acids of the type used in alkyd paints and association is the preferred thickener mechanism. The moieties may form part of a compound which can take part in a copolymerization to form a cellulose-free polymeric backbone for the thickener and if the compound is not very soluble in water, the copolymerization mixture is subjected to intensive agitation to form droplets of less than 500 nm number average diameter which compensates for the lack of solubility. The thickener may serve as a binder if sufficient amounts are used.

Abstract: A thickened aqueous coating composition (preferably paints and the like or adhesives) containing a film-forming polymeric binder which produces dried coatings having less sensitivity to water by using a thickener which is autoxidizable. Preferred autoxidizable moieties are provided by long chain fatty acids of the type used in alkyd paints and association is the preferred thickener mechanism. The moieties may form part of a compound which can take part in a copolymerization to form a cellulose-free polymeric backbone for the thickener and if the compound is not very soluble in water, the copolymerization mixture is subjected to intensive agitation to form droplets of less than 500 nm number average diameter which compensates for the lack of solubility. The thickener may serve as a binder if sufficient amounts are used.

Abstract: A thickened aqueous coating composition (preferably paints and the like or adhesives) containing a film-forming polymeric binder which produces dried coatings having less sensitivity to water by using a thickener which is autoxidisable. Preferred autoxidisable moieties are provided by derivatives of long chain fatty acids of the type used in alkyd paints and association is the preferred thickener mechanism. The moieties may form part of a compound which can take part in a copolymerisation to form a polymeric backbone for the thickener and if the compound is not very soluble in water, the copolymerisation mixture is subjected to intensive agitation to form droplets of less than 500 nm which compensates for the lack of solubility. The thickener may serve as its own binder if sufficient amounts are used.

Abstract: An aqueous paint composition comprising a polymeric binder and a particulate non-film-forming solid in which; (i) at least 20% by weight of the polymeric binder is a thickener which is an, amine or acid functional, acrylic addition polymer which is at least partially neutralised, the thickener being such that a 1% by weight solution of the thickener in water when fully neutralised has a viscosity of at least 10 centipoise (measured using a Brookfield Spindle number 3 at 60 rpm and 25° C.), (ii) the pvc of the coating composition is 65 to 95%; (iii) the volume solids of the composition is 8 to 30%.

Abstract: The invention provides a co-polymer having a hub portion from which radiate from 3 to 8 arms where the hub portion is the residue of a tri-functional to octa-functional thiol and each arm is an addition polymer comprising structural units and functional units that are mutually compatible, the functional units including crosslinking substituents capable of undergoing a crosslinking reaction with a crosslinking agent or crosslinking substituent in functional units in another molecule of the same polymer and optionally compatible auxiliary functional units that contain wetting groups.

Abstract: The invention provides a co-polymer comprising a hub portion from which radiate from 3 to 8 arms, where the hub portion being the residue of a trifunctional to octafunctional thiol and each arm is an addition polymer comprising structural units and functional units where the functional units contain hydrolysable group-bearing silicon atoms, optionally additional functional units each of which contain crosslinking groups that are the same or different and that are compatible with each other and the hydrolysable group-containing silicon atoms and optionally auxiliary functional units containing wetting groups.