An epoxy resin emulsion includes a continuous phase including an aqueous carrier and an acid. The emulsion also includes a dispersed phase including an epoxy resin. The epoxy resin is the reaction product of an amine compound and a first epoxy reactant. The first epoxy reactant itself includes the reaction product of (1) an aromatic diol monomer, (2) a di-glycidyl ether of Bisphenol A and/or a di-glycidyl ether of catechol, and (3) a C8-C18 alkyl phenolic end-capping agent. The (1) aromatic diol monomer has the structure: ##STR00001##
In this structure, each of R.sup.1-R.sup.4 is independently a hydrogen atom, a C.sub.1-C.sub.8 alkyl group, a C.sub.3-C.sub.8 cycloalkyl group, an aryl group, an aralkyl group, a halide group, a cyano group, a nitro group, a blocked isocyanate group, or a C.sub.1-C.sub.8 alkyloxy group or wherein any two or more of R.sup.1-R.sup.4 may be a fused ring.

The invention relates to thermosetting powder coating compositions as these are disclosed herein. The compositions comprise A) unsaturated resin(s) comprising ethylenic unsaturations selected from the group consisting of polyester resins, polyurethanes, epoxy resins, polyamides, polyesteramides, polycarbonates, polyureas and mixtures thereof; and B) curing agent(s) selected from the group consisting of certain vinyl urethanes, vinyl functionalized urethane resins and mixtures thereof; and C) thermal radical initiator(s) selected from the group consisting of organic peroxides, azo compounds, and mixtures thereof; and D) co-initiator(s) selected from the group consisting of certain onium compounds, sulpho-compounds, and mixtures thereof; and E) inhibitor(s) selected from the group consisting of phenolic compounds, stable radicals, catechols, phenothiazines, hydroquinones, benzoquinones and mixtures thereof. The invention further relates to a process for making said thermosetting powder coating compositions and processes for coating an article with said thermosetting powder coating compositions. The invention further relates to cured thermosetting powder coating compositions obtained by curing of the thermosetting powder coating compositions of the invention. The invention further relates to an article having coated thereon said thermosetting powder coating composition as well as to an article having coated and cured thereon said thermosetting powder coating composition. The invention further relates to the use of said thermosetting powder coating compositions, to the use of an article having coated thereon said thermosetting powder coating compositions and to the use of an article having coated and cured thereon said thermosetting powder coating compositions. The invention further relates to various uses of either the thermosetting powder coating compositions of the invention, or the cured thermosetting powder coating compositions of the invention or of articles having coated thereon the thermosetting powder coating composition of the invention, or of articles having coated and cured thereon the thermosetting powder coating composition of the invention. The invention further relates to a method for substantially lowering the T.sub.chalk-free as the latter is defined herein.

The present invention provides a sulfonium salt photoinitiator, a preparation method therefor, a photocurable composition comprising sulfonium salt photoinitiator, and use thereof. The sulfonium salt photoinitiator has a structure represented by formula (I). By modifying the structure of an existing sulfonium salt photoinitiator, a sulfonium salt photoinitiator having a new structure is obtained, which can exhibits a higher photosensitivity and an excellent as well as characteristics of low odor and low toxicity, when being used in a photocurable composition. This is significantly superior to existing similar photoinitiators.

##STR00001##

Combined coating of a projection screen, comprising light-absorbing coating and reflective coating. The light-absorbing coating comprises 28-32 parts by weight of acrylate, 28-32 parts by weight of reactive diluent, 1-3 parts by weight of photoinitiator, 1-3 parts by weight of black pigment, 20-28 parts by weight of solvent, and 1-5 parts by weight of promoter. The reflective coating comprises 28-32 parts by weight of acrylate, 28-32 parts by weight of reactive diluent, 1-3 parts by weight of photoinitiator, 18-23 parts by weight of aluminum silver powder, 26-32 parts by weight of solvent and 1-5 parts by weight of promoter.

Combined coating of a projection screen, comprising light-absorbing coating and reflective coating. The light-absorbing coating comprises 28-32 parts by weight of acrylate, 28-32 parts by weight of reactive diluent, 1-3 parts by weight of photoinitiator, 1-3 parts by weight of black pigment, 20-28 parts by weight of solvent, and 1-5 parts by weight of promoter. The reflective coating comprises 28-32 parts by weight of acrylate, 28-32 parts by weight of reactive diluent, 1-3 parts by weight of photoinitiator, 18-23 parts by weight of aluminum silver powder, 26-32 parts by weight of solvent and 1-5 parts by weight of promoter.

A process for depositing a metal-adhesive, hydrophobic and electrically conductive coating based on electrically conductive microparticles and on a polymer matrix P comprising at least one thermoplastic fluoropolymer P1 and a thermosetting resin P2, comprises: in a first container, dissolve the polymer P1 in an organic solvent; in a second container, disperse the electrically conductive microparticles in an organic solvent; add, in the first container, the thermosetting resin P2 in the liquid state; mix the contents of the containers, then deposit the mixture on the substrate; crosslink the resin P2 and remove the solvents, to obtain a first coating; then impregnate the surface of the substrate with an additional resin solution P2 dissolved in a third solvent, which is a solvent of the resin P2 and a non-solvent of the polymer P1; eliminate the third solvent and crosslink while compressing the additional resin P2 in order to obtain the targeted final coating.

A process for depositing a metal-adhesive, hydrophobic and electrically conductive coating based on electrically conductive microparticles and on a polymer matrix P comprising at least one thermoplastic fluoropolymer P1 and a thermosetting resin P2, comprises: in a first container, dissolve the polymer P1 in an organic solvent; in a second container, disperse the electrically conductive microparticles in an organic solvent; add, in the first container, the thermosetting resin P2 in the liquid state; mix the contents of the containers, then deposit the mixture on the substrate; crosslink the resin P2 and remove the solvents, to obtain a first coating; then impregnate the surface of the substrate with an additional resin solution P2 dissolved in a third solvent, which is a solvent of the resin P2 and a non-solvent of the polymer P1; eliminate the third solvent and crosslink while compressing the additional resin P2 in order to obtain the targeted final coating.

A coating material processable by non-impact printing to form at least a part of a coating layer representing an image, the coating material having an amorphous resin portion, is curable and is configured for being applied with a thickness of at least 15 μm, the coating material having one or more of the following: a polyester resin having at least one incorporated acid monomer and wherein at least 10 weight percent of the at least one incorporated acid monomer is isophthalic acid; a polyester resin containing 1 to 100 w-% of cycloaliphatic glycol compounds with respect to the total weight of the glycol compounds of the polyester resin component; an acrylic resin; a fluorine containing polymer; a polyurethane resin.

A coating material processable by non-impact printing to form at least a part of a coating layer representing an image, the coating material having an amorphous resin portion, is curable and is configured for being applied with a thickness of at least 15 μm, the coating material having one or more of the following: a polyester resin having at least one incorporated acid monomer and wherein at least 10 weight percent of the at least one incorporated acid monomer is isophthalic acid; a polyester resin containing 1 to 100 w-% of cycloaliphatic glycol compounds with respect to the total weight of the glycol compounds of the polyester resin component; an acrylic resin; a fluorine containing polymer; a polyurethane resin.

The present application relates to a coating composition and wood article manufactured therefrom, the coating composition comprising: (A) a film-forming resin composition comprising a reactive donor capable of providing two or more nucleophilic carbanions, and a reactive acceptor comprising two or more carbon-carbon double bonds; (B) a catalyst for catalyzing the Michael addition crosslinking reaction between the reactive donor and the reactive acceptor, wherein the reactive donor has an aromatic epoxy backbone, and wherein the reactive donor has an epoxy equivalent weight in the range of from 400 to 1100 g/mol, preferably in the range of from 470 to 1000 g/mol, more preferably in the range of from 470 to 900 g/mol.