Abstract: The invention provides acrylamide polymers that, when mixed with water solvent, provide thermoreversible solutions that form low viscosity melts at temperatures separated by a third region of maximum viscosity.

Abstract: A photographic element for processing in moderate to large volume photofinishing baths and comprising one and only one dimensionally stable coating support, and coated thereon in reactive association an imaging layer containing radiation sensitive silver halide, a diffusible-dye forming layer containing a diffusible-dye forming compound, and a barrier layer overlaying said diffusible-dye forming layer is disclosed. This coating support is selected from reflection base and transparent base materials, and this diffusible-dye forming layer may be the same or different than this imaging layer. This barrier layer contains a polymer that allows the passage of solutions for processing when this element is contacted with an external processing bath, and impedes the diffusion out of this element of the diffusible dye formed from this diffusible-dye forming compound.

Abstract: A process for forming a color image which may be used to represent a printed color image to be obtained from a printing press comprising (a) forming a thermal dye transfer image in a polymeric dye image-receiving layer of an intermediate dye-receiving element by imagewise-heating a dye-donor element and transferring a dye image to the dye image-receiving layer, (b) applying a dye-migration barrier layer to one surface of a paper substrate, and (c) transferring the imaged polymeric dye image-receiving layer to the surface of the paper having the dye-migration barrier layer applied thereon; the dye-migration barrier layer comprising(a) crosslinked polymeric particles whose average diameter is equal to or less than about one-half the thickness of the layer; or(b) a polymer containing a polymeric crystallizable plasticizer that is at least partially compatible with the polymer and which has a crystalline melting point of less than about 135.degree. C.

Abstract: In accordance with this invention a photographic color diffusion transfer element is provided wherein said element comprises a single dimensionally stable transparent support and coated thereon in reactive association and in sequence (1) a mordant layer for binding diffusible dyes, (2) a light reflecting layer, (3) imaging layers comprising a radiation sensitive layer comprising silver halide and a diffusible dye forming layer comprising a diffusible dye forming compound, and (4) a barrier layer comprising a polymer that allows the passage of solutions for processing said element when said element is contacted with an external processing bath, and wherein said barrier layer impedes the diffusion out of said element of the diffusible dye formed from said diffusible dye forming compound.

Abstract: In accordance with this invention a diffusion transfer process is provided for forming a color photographic image comprising the steps of: (a) using an integral element comprising one and only one dimensionally stable layer comprising a coating support, and coated thereon in reactive association a mordant layer comprising a material which binds a diffusible dye, an imaging layer comprising radiation sensitive silver halide, a diffusible dye forming layer comprising a diffusible dye forming compound, and a barrier layer overlaying said diffusible dye forming layer, wherein said support is selected from the group consisting of reflection base and transparent base materials, wherein said diffusible dye forming layer is the same or different than said imaging layer, wherein said barrier layer comprises a polymer that allows the passage of solutions for processing said element when said element is contacted with an external processing bath, and wherein said barrier layer impedes the diffusion out of said element o

Abstract: This invention provides a photographic element containing a polymer layer which reflects a development inhibitor or its precursor released from a DIR compound thereby retarding the diffusion of the development inhibitor to another layer. The polymers used in the barrier layer contain from about 1.times.10.sup.-5 to about 4.times.10.sup.-3 ion forming functional groups. The preferred polymers comprise repeating units of the formula --(A).sub.m -(B).sub.n -- with A derived from a hydrophobic monomer and B derived from an ionic hydrophilic monomer with the more preferred monomers being acrylates, methacrylates, acrylamides and methacrylamides. The invention also provides a method of processing a photographic element containing such a barrier layer.

Abstract: The invention is accomplished by providing an iodide ion absorbing method and article. The article is a composite article comprising a surfactant, an iodide absorbing medium, and a polymer that is permeable to iodide ion overlaying the iodide absorbing medium. In a preferred embodiment of the invention the polymer is an ionic polymer and the surfactant is an ionic surfactant with a charge opposite to that of the polymer. The surfactant can be incorporated in the absorbing medium, in the polymer, or it can overlay the polymer. In a preferred form of the invention, a substrate is coated with the iodide absorbing medium, a layer of an ionic polymer is overlaid on the absorbing medium, and a layer incorporating an ionic surfactant is overlaid onto the polymer. The ionic surfactant also may be placed in a layer between the polymer and the absorbing medium. A preferred absorbing medium is silver bromide.

Abstract: The invention provides new crosslinked vinyl polymer particles, new coating compositions containing such particles, new liquid electrographic developers containing such particles, new electrographic elements containing one or more layers comprising such particles, and new electrographic records containing toner images and/or layers comprising such particles.The polymeric particles of the invention are characterized in that each particle has an average diameter less than one micrometer and comprises a crosslinked vinyl addition copolymer obtainable by aqueous emulsion polymerization of a mixture of monomers wherein:1.5-15 percent by weight of the mixture of monomers comprises polyfunctional vinyl addition-polymerizable monomers in order to form crosslinking structural units in the copolymer;85-98.5 percent by weight of the mixture of monomers comprises monofunctional vinyl addition-polymerizable monomers selected such that:A. 0-98.

Abstract: Photographic assemblages are described employing metallizable redox dye-releasers and a ligand having a coordinating site which is: ##STR1## In a preferred embodiment, the ligand is an alpha amino carboxylic acid, a 2-pyridinecarboxylic acid, a 2-aminoalcohol, a 2-hydroxymethylpyridine, a 2-hydroxyacetic acid, a 1,2-diamine or a 2-hydroxypyridine-N-oxide.

Abstract: A method is described for combating the bark beetle Scolytus multistriatis. The method uses an attractant mixture of three compounds: 4-methyl-3-heptanol; 2,4-dimethyl-5-ethyl-6,8-dioxabicyclo (3.2.1) octane; and .alpha.-cubebene. Traps containing the mixture are set out in or near infested areas. When a sufficient number of beetles have been lured into the traps, they are removed and destroyed. Alternatively, the traps contain an insecticide which enables the traps to remain onsite for a longer period.