The present invention relates to a composition comprising an aqueous dispersion of a) polymer particles having a z-average particle size in the range of from 50 nm to 500 nm; b) anion exchange resin particles having a D.sub.50 median particle size in the range of from 0.1 μm to 50 μm; and c) polymeric organic microspheres having a D.sub.50 median particle size in the range of from 1 μm to 20 μm, wherein the weight-to-weight ratio of polymer particles to microspheres is in the range of from 0.5:1 to 20:1. The composition of the present invention is useful for paint compositions that form matte finishes with an excellent balance of stain blocking and stain removal properties.

A composition including: (a) at least one anionically stabilized acrylic polymer dispersion where the acrylic polymer contains acid monomer units; and (b) at least on polyamino siloxane relative to the weight of the total polymers in the composition, wherein the polyaminosiloxane copolymer containing steric stabilizing groups having a pendant group with a secondary or a primary amine functionality; and (ii) at least a portion of the silicon atoms in the polyaminosiloxane copolymer containing steric stabilizing groups having a pendant alkyl-poly(ethylene oxide) chain with 5 ethylene oxide units to 20 ethylene oxide units.

A composition including: (a) at least one anionically stabilized acrylic polymer dispersion where the acrylic polymer contains acid monomer units; and (b) at least on polyamino siloxane relative to the weight of the total polymers in the composition, wherein the polyaminosiloxane copolymer containing steric stabilizing groups having a pendant group with a secondary or a primary amine functionality; and (ii) at least a portion of the silicon atoms in the polyaminosiloxane copolymer containing steric stabilizing groups having a pendant alkyl-poly(ethylene oxide) chain with 5 ethylene oxide units to 20 ethylene oxide units.

A composition including: (a) at least one anionically stabilized acrylic polymer dispersion where the acrylic polymer contains acid monomer units; and (b) at least on polyamino siloxane relative to the weight of the total polymers in the composition, wherein the polyaminosiloxane copolymer containing steric stabilizing groups having a pendant group with a secondary or a primary amine functionality; and (ii) at least a portion of the silicon atoms in the polyaminosiloxane copolymer containing steric stabilizing groups having a pendant alkyl-poly(ethylene oxide) chain with 5 ethylene oxide units to 20 ethylene oxide units.

A method of coating a structure is disclosed. Method steps include providing a structure having a first portion of a first material having a first surface and providing a second portion of a second material having a second surface, wherein a mask is provided over the first surface. Another step includes exposing the mask and the second surface to a solution comprising a polymer and a solvent, wherein the solution dewets from the mask and the polymer collects onto the second surface to form a polymer coating over the second surface without forming a polymer coating on the first surface.

A method of coating a structure is disclosed. Method steps include providing a structure having a first portion of a first material having a first surface and providing a second portion of a second material having a second surface, wherein a mask is provided over the first surface. Another step includes exposing the mask and the second surface to a solution comprising a polymer and a solvent, wherein the solution dewets from the mask and the polymer collects onto the second surface to form a polymer coating over the second surface without forming a polymer coating on the first surface.

The invention is related to a cost-effective method for making a silicone hydrogel contact lens having a crosslinked hydrophilic coating thereon. A method of the invention involves heating a silicone hydrogel contact lens in an aqueous solution in the presence of a watersoluble, highly branched, thermally-crosslinkable hydrophilic polymeric material having positively-charged azetidinium groups, to and at a temperature from about 40° C. to about 140° C. for a period of time sufficient to covalently attach the thermally-crosslinkable hydrophilic polymeric material onto the surface of the silicone hydrogel contact lens through covalent linkages each formed between one azetidinium group and one of the reactive functional groups on and/or near the surface of the silicone hydrogel contact lens, thereby forming a crosslinked hydrophilic coating on the silicone hydrogel contact lens. Such method can be advantageously implemented directly in a sealed lens package during autoclave.

The invention is related to a cost-effective method for making a silicone hydrogel contact lens having a crosslinked hydrophilic coating thereon. A method of the invention involves heating a silicone hydrogel contact lens in an aqueous solution in the presence of a watersoluble, highly branched, thermally-crosslinkable hydrophilic polymeric material having positively-charged azetidinium groups, to and at a temperature from about 40° C. to about 140° C. for a period of time sufficient to covalently attach the thermally-crosslinkable hydrophilic polymeric material onto the surface of the silicone hydrogel contact lens through covalent linkages each formed between one azetidinium group and one of the reactive functional groups on and/or near the surface of the silicone hydrogel contact lens, thereby forming a crosslinked hydrophilic coating on the silicone hydrogel contact lens. Such method can be advantageously implemented directly in a sealed lens package during autoclave.

The invention relates to particles comprising a particular (aziridinyl hydroxy)-functional organic component. The invention further relates to mixtures comprising said particles. The invention further relates to aqueous dispersions comprising said particles. The invention further relates to aqueous compositions comprising said particles. The invention further relates to coating compositions comprising said particles. The invention further relates to aqueous coating compositions comprising said particles. The invention further relates to particles obtained by a process comprising—amongst others—the steps of providing an aqueous dispersion comprising a particular (aziridinyl hydroxy)-functional organic component. The invention further relates to a kit-of-parts comprising in one of its parts an aqueous dispersion comprising a particular (aziridinyl hydroxy)-functional organic component. The invention further relates to cured forms of the various particles, mixtures, aqueous dispersions, aqueous compositions, coating compositions, and aqueous coating compositions. The invention further relates to articles comprising the particles and/or said mixtures, and/or said aqueous dispersions and/or aqueous compositions and/or said cured forms. The invention further relates to various uses of the particles and/or said mixtures, and/or said aqueous dispersions and/or aqueous compositions and/or said cured forms.

A fabrication method for a press hardened part is provided. A sheet or a steel substrate blank for heat treatment is provided. A pre-coating is applied. The pre-coating has at least one layer of aluminum or aluminum alloy in contact with the steel substrate on at least one of the principal faces of the sheet or blank. Then a polymerized layer is deposited on the pre-coating. The polymerized layer has a thickness between 2 and 30 μm. The polymerized layer does not contain silicon, has a nitrogen content of less than 1% by weight and carbon pigments in a quantity between 3 and 30% by weight. The blank or the sheet is heated to obtain an interdiffusion between the steel substrate and the pre-coating and to give the steel a partly or totally austenitic structure. Then the blank or the sheet is hot stamped to obtain a part. The part is cooled by holding the part in a stamping tool so that the microstructure of the steel substrate includes, at least in a portion of the part, martensite or bainite.