Agfa Gevaert Nv

Agfa-gavaert N.v.

August M Marien

Walter F De Winter

Herman J Uytterhoeven

Serge M Tavernier

Etienne A Van Thillo

Werner J Op De Beeck

Geert H Defieuw

Marc P Stevens

Johannes M Verheijen

Marcel J Monbaliu

Daniel M Timmerman

Yvan K Gilliams

Beate Weber

Jorg Hagemann

Hendrik E Kokelenberg

Noel J De Volder

Lucien J Van Gossum

Urbain Leopold Laridon

Werner Op De Beeck

Rafael P Samijn

Geert Van Dyck

Luc A Van Steen

Jan E Van Havenbergh

Raf Voets

Jan H Van Hove

Antoine Roberta Van Rossen

Ludovicus Maria Hellemans

Roger Isidoor De Saedeleer

Eric Mostaert

Joannes Verheijen

A receptor element for non-impact printing is provided comprising a support and an image receiving layer containing at least 80% by weight with respect to the total weight of the layer of a polymer with between 0.5 and 20 mole % of moieties carrying sulphonic acid groups. Preferably the polymer is a polyester comprising between 0.5 and 20 mole % with respect to the total acid content of moieties provided by sulphoisophthalic acid and the sulpho groups are present in free acid form.

Receptor element for non-impact printing comprising an image receiving

Dry toner particles comprising an amorphous complex macromolecular compound that contains in its macromolecular structure, (i) a polyester backbone (A) having a Tg of at least 45.degree. C. and (ii) at least one polymer chain (B) being attached to the backbone, either terminally and/or in a side-chain, the polymer chain (B) being derived from a polymer selected from the group consisting of polyolefines and polyolefines containing alkoxy groups which on itself has an average molecular weight by number (M.sub.avg) so that 1900.ltoreq.M.sub.avg &lt;4000, a melting point between 50.degree. C. and 150.degree. C. and a melting range of at most 15.degree. C.

Dry toner particles comprising a complex amorphous macromolecule as

Disclosed is a polyalkylene naphthalate film, preferably the homopolymer of naphthalene-2,6-dicarboxylic acid and ethylene glycol (PEN), comprising a UV absorbing compound of general formula Q--CO--CO--X (explained in the description) for quenching of the UV fluorescence at 429 nm. The polymeric film is preferably used as support for a photographic material, preferably a colour negative or colour reversal photographic material.

Polyalkylene naphthalate comprising specific UV-absorber

An amorphous complex macromolecular compound is provided hat comprises in its macromolecular structure,

An image receptor sheet or web material carrying a layer with a polymeric binder on a support wherein the polymeric binder is at least 50% by weight of a polysiloxane modified resin and comprises polymeric moieties derived from polyesters or addition polymers with an acid value or hydroxy value between 2 and 50 mg KOH/g of polymer and the polysiloxane moieties are derived from epoxy-terminated polysiloxanes.

Image receptor sheet or web material carrying a layer with a

Disclosed is a polyalkylene naphthalate film, preferably the homopolymer of naphthalene-2,6-dicarboxylic acid and ethylene glycol (PEN), comprising a UV absorbing compound of the 2-hydroxyphenyl-triazine type for quenching of the UV fluorescence at 429 nm. The polymeric film is preferably used as support for a photographic material, preferably a color negative or color reversal photographic material.

Polyalkylene naphthalate film comprising specific UV-absorber

There are provided dry toner particles wherein the toner resin comprises more than 10% by weight of one or more polysiloxane modified resins. In this resin the polysiloxane moieties are attached to the other polymeric moieties (POL) of said copolymer over an ether group or an ester group. In a preferred embodiment the toner resin of the dry toner particles consists of one or more polysiloxane modified resins.

Polysiloxane modified resins for toner

A photographic material comprising at least one silver halide emulsion layer and a copolyester support-said copolyester comprising polyether group(s) in the side chain is disclosed. Preferably the copolyester is prepared by copolycondesing diol moieties that comprise a polyether group substituted with a sulfonic acid group in acid or salt form into the copolyester.

Photographic material comprising a copolyester support

Dye-receiving element for thermal dye sublimation transfer comprising a support having on one side a dye-receiving layer and, optionally on the other side a backcoat layer, the support carrying on at least one side a subbing layer comprising a copolyester formed by polycondensation of at least one aromatic dicarboxylic acid and at least one aliphatic diol, wherein the copolyester further comprises at least one comohomer having at least one sulfonate group in the acid form, alkalimetal salt form, and mixtures thereof.

Dye-receiving element for thermal dye sublimation

Processes are disclosed for incorporating a water-insoluble substance in a diffusion resistant form into a hydrophilic colloidal layer of an element. In a first process A the water-insoluble substance is present during the polycondensation of diol(s) or polyol(s) and carboxylic acids, whereby at least 6 mole % of the reagents bear a water-solubilizing group, preferably a sulpho group in the salt form; the obtained mixture of polyester and water-insoluble substance is then dispersed in an aqueous medium. In an alternative process B the polyester is first prepared and then mixed homogeneously with the hydrophobe substance by melting in a reactor or extruder; the mixture is then similarly dispersed. The obtained latex is then incorporated in a hydrophilic colloidal layer which is coated on a support. The obtained element can serve as base for a reprographic image, e.g. a color proof image, or can form part of a complete photographic material. In a preferred embodiment the water-insoluble substance is a brightening agent.

Process for incorporation of a water-insoluble substance into a

Dye-image receiving element for use according to thermal dye sublimation transfer comprising a support having thereon a dye-image receiving layer containing a (co)polyester comprising condensation residues of one or more diols and one or more dicarboxylic acids and further comprising condensation residues of one or more hydroxy-carboxylic acids containing a long chain alkyl or alkylene group having at least 8 carbon atoms.

Thermal dye sublimation transfer receiving element

Dye-donor element for use according to thermal dye sublimation transfer comprising a support having on one side a dye layer and on the other side a heat-resistant layer, said support carrying on at least one side a subbing layer comprising a polyester formed by polycondensation of at least one aromatic dicarboxylic acid and at least one aliphatic diol, wherein said polyester is a copolyester further comprising units derived from at least one multifunctional comonomer carrying at least 3 functional groups, which may be same or different and are chosen from hydroxy and carboxy groups including so-called latent carboxy groups.

Dye-donor element for thermal dye sublimation transfer

A continuous direct esterification and polycondensation process is disclosed in view of the production of polyester comprising units of ethylene terephthalate as the major repeating units, said polyester being substantially improved in particular in respect of its electroconductive properties. Said process comprises supplying terephtalic acid and ethylene glycol to bis(betahydroxy ethyl) terephthalate or its oligomer so as to carry out esterification, followed by polycondensing the resulting oligomer under increasingly reduced pressure, and wherein a solution in ethylene glycol of an electroconductivity enhancing additive, preferably a metallic salt, such as e.g. magnesium acetate, is added to the oligomer reaction mixture when the esterification rate has reached at least 80% and characterized in that said ethylene glycol solution is added to the oligomer reaction mixture in such manner that escape of the added ethylene glycol out of the said oligomer reaction mixture is prohibited.

Process for the production of polyester with increased

A continuous direct esterification and polycondensation process is disclosed for the production of polyester comprising units of ethylene terephthalate as the major repeating units by supplying a slurry of mainly terephthalic acid and ethylene glycol to bis(betahydroxyethyl) terephthalate or its oligomer so as to carry out esterification, followed by polycondensation whereby the resulting oligomer is kept under increasingly reduced pressure, characterized in that a stabilizing solution of an aliphatic diol containing a diethyl or tributhyl phosphite and a hindered phenolic phosphonate is added to the reaction mixture before the start of the polycondensation.

Process for the production of polyester with enhanced thermo-oxidative

A toner composition comprised of electrostatically attractable fusible powder particles, having an average particle size in the range of 1 to 100 .mu.m and a melt viscosity at 190.degree. C. in the range of 20 to 200 Pa.s, said powder particles comprising a coloring substance, a polymeric binder which consists essentially of a copolymer of:

Growing community of inventors

Oevel, Belgium

August M Marien