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Walter Frans De Winter Patents
Inventor:
De Winter; Walter Frans
Address:
Berchem, BE
No. of patents:
10
Patents:




Patent Number Title Of Patent Date Issued
4075023 Polymerizable unsaturated oxazolidines and tetrahydro-1,3-oxazines and polymers thereof February 21, 1978
Oxazolidines and tetrahydro-1,3-oxazines which are substituted with 3-acryloyl or 3-methacryloyl groups are prepared by adding to an excess of a ketone and in the presence of a hydrogen chloride acceptor, about equimolecular amounts of a 2- or 3-amino lower alkanol and of acryloyl ch
4047957 Process of hardening protein-containing photographic layers with a mixture of a carboxyl group-a September 13, 1977
A process is described for the hardening of a protein-aceous layer or layers, more especially of gelatin layers, e.g. gelatin layers in a photographic material, by the application on this layer or layers of a coating composition comprising a low molecular weight, fast-acting, carboxy
4039463 Electrostatographic developers comprising a carrier bead coated with a copolymer of N-vinylcarba August 2, 1977
Carrier beads for use in an electrostatographic developer mixture comprise a glass core or iron-containing metal core enveloped with a coating of a copolymer of N-vinylcarbazole, trialkoxyvinylsilane and/or triacetoxyvinylsilane and optionally one or both of the monomers of the group
4033770 Production of adhesive transfers by diffusion transfer July 5, 1977
Process and material for the production and use of pressure sensitive and for heat sensitive and/or solvent sensitive decalcomanias, formed according to the principles of the silver complex diffusion transfer process.
4022622 Dispersing polymeric particles in aqueous medium for coating silver halide emulsion layers May 10, 1977
Polymeric particles are homogeneously dispersed in aqueous medium by a process which comprises dissolving a water-insoluble film-forming polymer in a water-insoluble, ethylenically unsaturated monomer which is liquid at room temperature. The solution formed is dispersed by stirring in an
3993850 Recording material November 23, 1976
A recording material is described, which comprises a support of paper or of synthetic polymer and an electroconductive layer on at least one side of the support. The surface resistance of this electroconductive layer is not more than 10.sup.11 ohms per sq. at a relative humidity of 15%.
3986877 Development promoting compounds for silver halide photography October 19, 1976
A method is described for developing silver halide emulsions wherein development is activated by incorporating in the developing composition or the emulsion a homopolymer or copolymer comprising (meth)acrylate or (meth)acrylamide units in which the ester linked or amide linked group
3969283 Recording material July 13, 1976
A recording material is described, which comprises a support of paper or of synthetic polymer and an electroconductive layer on at least one side of the support. The surface resistance of this electroconductive layer is not more than 10.sup.11 ohms per sq. at a relative humidity of 15 %.
3950169 Electrophotographic element with polymeric conductive layer April 13, 1976
A recording material is described, which comprises a support of paper or of synthetic polymer and an electroconductive layer on at least one side of the support. The surface resistance of this electroconductive layer is not more than 10.sup.11 ohms per sq. at a relative humidity of 15%.
3941727 Hydrophilic aqueous coating composition containing aqueous binder solution and select homogeneou March 2, 1976
Polymeric particles are homogeneously dispersed in aqueous medium by a process which comprises dissolving a water-insoluble film-forming polymer in a water-insoluble, ethylenically unsaturated monomer which is liquid at room temperature. The solution formed is dispersed by stirring in an


 
 
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