Abstract: The invention relates to a curtain coating process for coating substrates with a stable curtain and a uniform coating at low flow rates wherein a free-falling curtain of an aqueous composition comprising a high solids content is coated onto the moving substrate at a flow rate per unit die length value (Q) equal to or inferior to 10?4 m3/(s·m), the said high solids content composition comprising a polymeric rheology modifier and a non-ionic surfactant. The invention relates in particular to a curtain coating process for coating fibrous substrates such as paper or board. The invention also relates to a coated product.

Abstract: The invention relates to a curtain coating process for coating substrates with a stable curtain and a uniform coating at low flow rates wherein a free-falling curtain of an aqueous composition comprising a high solids content is coated onto the moving substrate at a flow rate per unit die length value (Q) equal to or inferior to 10?4 m2/(s·m), the said high solids content composition comprising a polymeric rheology modifier and a non-ionic surfactant. The invention relates in particular to a curtain coating process for coating fibrous substrates such as paper or board. The invention also relates to a coated product.

Abstract: The invention relates to coated products for printing on including a substrate and at least two different coatings having different properties, which comprise a low-coat layer, adjacent to the substrate, preferably pigmented, for printing properties and possibly optical properties, and a different top-coat layer, farther from the substrate, comprising optical pigments for optical effect properties, each coating having a dry coatweight ranging from 0.1 to 12 g/m2. The invention also concerns a one-pass wet-on-wet multi-layer curtain coating process for producing said coated products suitable for printing on.

Abstract: An ink-jet recording material having a high ozone resistance comprises at least one ink-absorbing and at least one dye-fixing layer wherein on the top and/or bottom side of the dye-fixing layer, at least one water-soluble compound exhibiting ionic charge centres is arranged, which compound exhibits a dissociation constant in the region of 1×10?3 to 1×10?14 with a conductivity range ? of 6 to 25 ms at a temperature of 25° C.±1° C. in a 0.1 molar aqueous solution.

Abstract: An ink jet recording material comprising a support and at least one image recording layer has a protective layer on the upper side of the image recording layer, said protective layer containing an organic sulphur-containing compound which forms complexes with metal ions and a boric acid compound and wherein the image recording layer and/or the protective layer contains an organic compound having the formula MeX or MeX2 where Me is a transition metal from group VIb, VIIb, VIIIb, Ib and IIb in the Periodic Table and X is an anion of a carboxylic acid having 4 to 12 carbon atoms; the recording material has improved ozone resistance and light fastness and a higher resistance to the so-called color gamut.

Abstract: An ink-jet recording material having a high ozone resistance comprises at least one ink-absorbing and at least one dye-fixing layer wherein on the top and/or bottom side of the dye-fixing layer, at least one water-soluble compound exhibiting ionic charge centres is arranged, which compound exhibits a dissociation constant in the region of 1×10−3 to 1×10−14 with a conductivity range &lgr; of 6 to 25 ms at a temperature of 25° C.±1° C. in a 0,1 molar aqueous solution.

Abstract: An organic photoreceptor that includes:(a) a charge transport compound having the formula ##STR1## where n is an integer between 2 and 6, inclusive; R.sup.1 and R.sup.2, independently, are an alkyl group, a cycloalkyl group, or an aryl group, or R.sup.1 and R.sup.2 combine with the nitrogen atom to form a ring;Y is a bond, a carbon atom, a --CR.sup.3 group, an aryl group, a cycloalkyl group, or a cyclosiloxyl group;R.sup.3 is hydrogen, an alkyl group, or an aryl group; andX is a linking group having the formula --(CH.sub.2).sub.m -- wherein m is an integer between 4 and 10, inclusive, and one or more of the methylene groups is optionally replaced by an oxygen atom, a carbonyl group, or an ester group;(b) a charge generating compound; and(c) an electroconductive substrate.

Abstract: An organic photoreceptor that includes:(a) a charge transport compound having the formula ##STR1## where n is an integer between 2 and 6, inclusive; R.sup.1 and R.sup.2, independently, are an alkyl group, a cycloalkyl group, or an aryl group, or R.sup.1 and R.sup.2 combine with the nitrogen atom to form a ring;Y is a bond, a carbon atom, a --CR.sup.3 group, an aryl group, a cycloalkyl group, or a cyclosiloxyl group;R.sup.3 is hydrogen, an alkyl group, or an aryl group; andX is a linking group having the formula --(CH.sub.2).sub.m -- where m is an integer between 4 and 10, inclusive, and one or more of the methylene groups is optionally replaced by an oxygen atom, a carbonyl group, or an ester group;(b) a charge generating compound; and(c) an electroconductive substrate.

Abstract: Tabular gain silver halide emulsions prepared in the presence of a block copolymer selected from the group consisting of:A--B, A--(B--A).sub.m, B--(A--B).sub.m, (A--B).sub.p --X, (B--A).sub.p --X, ?A--(B--A).sub.m !.sub.p --X, and ?B--(A--B).sub.m !.sub.p --Xwhere m is an integer of 1 or more, p is an integer of 3 or more, X represents a p-valent linking group, A represents a poly(tetrahydrofuran) block, and B represents a poly(ethylene oxide) block.

Abstract: The present invention relates to a process for preparing monodispersed tabular silver halide grain emulsions, said process comprising the following steps:(a) forming a population of silver halide nuclei in a dispersing medium having a pH lower than 3 and a pBr in the range of from 1 to 2,(b) ripening said population of silver halide nuclei in presence of a silver halide solvent,(c) performing a first growing of said silver halide nuclei at a pBr value in the range of from 1 to 2, and(d) performing a second growing of said silver halide nuclei at a value in the range of from 2 to 2.7.According to a preferred embodiment of the present invention a polyalkylene oxide-polyalkylsiloxane copolymer is present during at least one of the above mentioned steps (a) to (d). The process of the present invention enable the growth of monodispersed tabular silver halide grain emulsions having a reduced amount of non-conforming grains and a lower coefficient of variation (COV).