Abstract: A recording material including a support having at least one colored surface and a layer of polymeric material is described. The layer including polymeric particles has a core/shell structure, and the particles are either (i) particles having an outermost polymer shell having a calculated Tg of from 40° C. to 80° C., or (ii) particles having an inner polymer shell having a calculated Tg of from 40° C. to 130° C. and an outer polymer shell having a calculated Tg of from ?55° C. to 50° C. The calculated Tg of said outer polymer shell is lower than that of said inner polymer shell, the particles including, when dry, at least one void capable of providing opacity to said layer, and the colored surface has sufficient color density to be visibly contrasting to a surface of the subsequent layer including the polymeric particles disposed thereon.

Abstract: The present invention relates to a coating composition comprising an aqueous dispersion of a binder and first and second core-shell polymer particles having aqueous neutralized acid cores, wherein the dry bulk density of the first core-shell polymer particles is in the range of 0.25 to 0.5 g/mL; and the dry bulk density of the second core-shell polymer particles is in the range of 0.30 to 0.90 g/mL. The composition of the present invention is useful as an undercoat layer for a thermosensitive recording material.

Abstract: The present invention relates to a thermosensitive recording material comprising paper, an undercoat layer disposed on the paper, and a thermosensitive recording layer disposed on the undercoat layer, wherein the undercoat layer comprises a binder and first and second hollow sphere polymer particles, wherein the first hollow sphere polymer particles have a diameter in the range of from 1.2 ?m to 1.8 ?m; the second hollow sphere polymer particles have a diameter in the range of from 0.25 ?m to 1.0 ?m; the number ratio of the second to the first hollow sphere polymer particles is in the range of from 1:1 to 20:1; the diameter of the second hollow sphere polymer particles is in the range of from 15 to 65% of the diameter of the first hollow sphere polymer particles; the dry bulk density of the first hollow sphere polymer particles is in the range of 0.25 to 0.5 g/mL; and the dry bulk density of the second hollow sphere polymer particles is in the range of 0.30 to 0.90 g/mL.

Abstract: The present invention relates to a coating composition comprising an aqueous dispersion of a binder and first and second core-shell polymer particles having aqueous neutralized acid cores, wherein the first core-shell polymer particles have a diameter in the range of from 1.0 ?m to 1.8 ?m; the second core-shell polymer particles have a diameter in the range of from 0.25 ?m to 1.0 ?m; the number ratio of the second to the first core-shell polymer particles is in the range of from 1:1 to 20:1; the diameter of the second core-shell polymer particles is in the range of from 15 to 65% of the diameter of the first core-shell polymer particles; the dry bulk density of the first core-shell polymer particles is in the range of 0.25 to 0.5 g/mL; and the dry bulk density of the second core-shell polymer particles is in the range of 0.30 to 0.90 g/mL. The composition of the present invention is useful as an undercoat layer for a thermosensitive recording material.

Abstract: The present invention relates to a thermosensitive recording material comprising paper, an undercoat layer disposed on the paper, and a thermosensitive recording layer disposed on the undercoat layer, wherein the undercoat layer comprises a binder and first and second hollow sphere polymer particles, wherein the first hollow sphere polymer particles have a diameter in the range of from 1.2 ?m to 1.8 ?m; the second hollow sphere polymer particles have a diameter in the range of from 0.25 ?m to 1.0 ?m; the number ratio of the second to the first hollow sphere polymer particles is in the range of from 1:1 to 20:1; the diameter of the second hollow sphere polymer particles is in the range of from 15 to 65% of the diameter of the first hollow sphere polymer particles; the dry bulk density of the first hollow sphere polymer particles is in the range of 0.25 to 0.5 g/mL; and the dry bulk density of the second hollow sphere polymer particles is in the range of 0.30 to 0.90 g/mL.

Abstract: A recording material including a support and disposed thereon at least one layer including certain core/shell polymeric particles, the particles having, whey dry, at least one void; and an opacity reducer is provided. A method for providing an image using the recording sheet is also provided.

Abstract: A recording material including a support and disposed thereon at least one layer including certain core/shell polymeric particles, the particles having, when dry, at least one void; and an opacity reducer is provided. A method for providing an image using the recording sheet is also provided.

Abstract: A fuel cell, having improved sealing against leakage, includes a fuel cell component having a cured sealant, wherein the cured sealant includes a telechelic-functional polyisobutylene, an organhydrogenosilane crosslinker, a platinum catalyst and a photoinitiator. The fuel cell component may be a cathode flow field plate, an anode flow field plate, a resin frame, a gas diffusion layer, an anode catalyst layer, a cathode catalyst layer, a membrane electrolyte, a membrane-electrode-assembly frame, and combinations thereof.

Abstract: A fuel cell, having improved sealing against leakage, includes a sealant disposed over the peripheral portions a membrane electrode assembly such that the cured sealant penetrates a gas diffusion layer of the membrane electrode assembly. The sealant is applied through liquid injection molding techniques to form cured sealant composition at the peripheral potions of the membrane electrode assembly. The sealant may be thermally cured at low temperatures, for example 130° C. or less, or may be cured at room temperature through the application of actinic radiation.

Abstract: A family of polymers having pendent sulfonate moieties connected to polymeric main chain phenyl groups are described. These polymers are prepared by the steps of polymerization (using a monomer with a phenyl with an alkoxy substitution), deportation by converting the alkoxy to a hydroxyl, and functionalization of the polymer with a pendant sulfonate group. As an example, sulfonated poly(arylene ether sulfone) copolymers with pendent sulfonic acid groups are synthesized by the direct copolymerization of methoxy-containing poly(arylene ether sulfone)s, then converting the methoxy groups to the reactive hydroxyl form, and finally functionalizing the hydroxyl form with proton-conducting sites through nucleophilic substitution. The family of polymers may have application in proton exchange membranes and in other applications.