Abstract: A color image-forming process is disclosed, which comprises imagewise exposing a silver halide photographic material comprising a reflective support having provided thereon at least one light-sensitive silver halide emulsion layer constituted by at least two kinds of monodispersed silver halide grains containing substantially no silver iodide and substantially deffering from each other in mean grain size, and developing the exposed photographic material for a developing time of within 2 minutes and 30 seconds using a color developer containing substantially no benzyl alcohol.

Abstract: A photosensitive material of the diazonium type which comprises a support, a precoat layer thereon and a photosensitive layer of a diazonium compound is improved by using a graft copolymer on a cellulose derivative as the precoat layer. A hydrophilic epoxy compound may be used in the precoat layer and a coupler and a benzenediazonium hexafluorophosphate derivative may be used in the photosensitive layer.

Abstract: A process for preparing a graft polymer by subjecting a cyclic ester to ring-opening polymerization in the presence of a cellulose derivative in the presence of a ring-opening polymerization catalyst for the cyclic ester. The resulting graft polymer has high transparency, good film-formability and high solubility and can be suitably used as a novel polymer material.

Abstract: A cellulose derivative-containing aqueous dispersion which is obtained by polymerizing a mixture of a cellulose derivative, at least one radical-polymerizable unsaturated monomer capable of dissolving the cellulose derivative therein and water under radical polymerization conditions, said aqueous dispersion containing as a dispersion stabilizer a water-soluble or water-dispersible polymer in which polymeric chain group compatible with the polymer obtained said radical-polymerizable unsaturated monomer is chemically bonded onto a hydrophilic polymeric chain group.

Abstract: A resin composition is prepared by emulsion-polymerizing a cellulose ester and at least one radical-polymerizable unsaturated monomer in the aqueous medium under the presence of a dispersion stabilizer, said cellulose ester having been modified by chemically bonding thereonto a polymeric chain compatible with a polymer obtained from said radical-polymerizable unsaturated monomer.

Abstract: A cellulose derivative-containing aqueous dispersion which is obtained by polymerizing a mixture of a cellulose derivative, at least one radical-polymerizable unsaturated monomer capable of dissolving the cellulose derivative therein and water under radical polymerization conditions, said aqueous dispersion containing as a dispersion stabilizer a water-soluble or water-dispersible polymer in which polymeric chain group compatible with the polymer obtained said radical-polymerizable unsaturated monomer is chemically bonded onto a hydrophilic polymeric chain group.

Abstract: A silver halide color photographic material having, on a support, at least one light-sensitive emulsion layer containing a silver chlorobromide emulsion (having a chloride content of 80 mol % or less) substantially free of iodide, with the silver chlorobromide emulsion being spectrally sensitized with a combination of at least two kinds of spectral sensitizing dyes having specified formulae, and with the silver chlorobromide emulsion layer being hardened with at least one 1,3,5-triazine derivative having specified formula, whereby achieving inhibition for increase in fog upon long-range preservation thereof as finished goods without attended by decrease in developing speed.