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 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 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 application relates to a dispersing resin, a universal color paste used for impregnating coating, and a preparation method therefor. The dispersing resin is prepared from a raw material including: diol, polyol, aromatic dicarboxylic acid, anhydride, maleic anhydride, polymerization inhibitor, reactive diluent, and azeotropic solvent.

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.

Provided herein are methods, compositions, devices, and systems for the 3D printing of biomedical implants. In particular, methods and systems are provided for 3D printing of biomedical devices (e.g., endovascular stents) using photo-curable biomaterial inks (e.g., or methacrylated poly(diol citrate)).

Provided herein are methods, compositions, devices, and systems for the 3D printing of biomedical implants. In particular, methods and systems are provided for 3D printing of biomedical devices (e.g., endovascular stents) using photo-curable biomaterial inks (e.g., or methacrylated poly(diol citrate)).

There is described a method for the production of a functional polyester having functional group X. The method comprises the step of melt blending a composition comprising (i) a high number average molecular weight (Mn) polyester having a Mn of ≥6,000 Da; and (ii) a functional compound comprising functional group Y which may be the same as functional group X or be different to functional group X but be operable to form functional group X in the functional polyester. The composition is melt blended such that the high Mn polyester and the functional compound react to produce the functional polyester. The high Mn polyester has a Mn that is higher than the Mn of the functional compound. The present invention extends to functional polyesters produced by the method; aqueous, solventborne and powder coating compositions containing the functional polyester, and articles coated with the said coating compositions.

There is described a method for the production of a functional polyester having functional group X. The method comprises the step of melt blending a composition comprising (i) a high number average molecular weight (Mn) polyester having a Mn of ≥6,000 Da; and (ii) a functional compound comprising functional group Y which may be the same as functional group X or be different to functional group X but be operable to form functional group X in the functional polyester. The composition is melt blended such that the high Mn polyester and the functional compound react to produce the functional polyester. The high Mn polyester has a Mn that is higher than the Mn of the functional compound. The present invention extends to functional polyesters produced by the method; aqueous, solventborne and powder coating compositions containing the functional polyester, and articles coated with the said coating compositions.