Abstract: Embodiments of an aqueous-based dispersion of a hydrolytically unstable polymer comprise particles of said hydrolytically unstable polymer and a stabilizing agent in water. The dispersion is substantially free of volatile organic solvents.

Abstract: Embodiments of the present disclosure are directed to coated substrates including a substrate having first and second major surfaces and a compostable coating disposed on at least one of the first and second major surfaces of the substrate. The substrate includes a cellulosic material. The compostable coating includes at least one compostable polymer and a dispersant and may disposed on the substrate at a coat weight less than about 20 grams per square meter. The coated substrate has a grease resistance ranging from about 4 to about 12 as measured in accordance with the TAPPI 559 kit test. In some embodiments, the compostable coating is formed from an aqueous dispersion of the compostable polymer and the dispersant.

Abstract: Embodiments of an aqueous-based dispersion of a hydrolytically unstable polymer comprise particles of said hydrolytically unstable polymer and a stabilizing agent in water. The dispersion is substantially free of volatile organic solvents.

Abstract: A photohardenable composition comprising a free radical addition polymerizable or crosslinkable compound, a cationic dye-borate anion complex, and a borate salt, said complex being capable of absorbing actinic radiation and producing free radicals which initiate free radical polymerization or crosslinking of said compound.

Abstract: The present invention relates to a method for exposing a photosensitive imaging sheet using a low temperature exposure step. The method includes the steps of:providing an imaging sheet including a substrate having provided on one of its surfaces a layer of microcapsules, said microcapsules containing an image-forming agent and a photohardenable composition comprising a free radical addition polymerizable or cross-linkable compound and a photoinitiator, said photoinitiator being capable of absorbing actinic radiation and producing free radicals which initiate free radical polymerization or cross-linking of said polymerizable or cross-linkable compound;cooling said imaging sheet to a temperature below ambient temperature; andimage-wise exposing said imaging sheet to actinic radiation while said imaging sheet is at said below ambient temperature.

Abstract: A photohardenable composition comprising an addition polymerizable or crosslinkable material, a photoinitiator composition capable of initiating polymerization or crosslinking of said polymerizable or crosslinkable material, and a compound of the formula ##STR1## wherein Q represents --C.dbd.O or --C--OH; X represents S or N which is unsubstituted or substituted with alkyl or aryl groups;R.sub.1 represents H, alkyl, aryl, alkoxy, bezoyl, arloxy, acyl or monosubstituted amino groups; andR.sub.2 represents H, alkyl or aryl groups is disclosed. The composition is preferably contained in microcapsules and is used in photosensitive imaging systems. The five member aromatic group containing the imine moiety functions to reduce the likelihood of short time scale reciprocity failure of the composition and enable imaging using high intensity radiation sources. An imaging method using the inventive composition is also disclosed.

Abstract: A process for producing microcapsules comprising the steps of: adding a hydroxy or amine functionalized acrylic resin or copolymer to an aqueous emulsion including a dispersed internal phase composition;simultaneously or subsequently adding a formaldehyde condensate prepolymer to said emulsion; andforming interpenetrating polymer network microcapsule walls around said internal phase, said interpenetrating polymer network microcapsule walls comprising the condensation reaction product of said functionalized acrylic resin or copolymer and said formaldehyde condensate prepolymer is disclosed.

Abstract: A recording sheet which comprises a substrate having a large of a metal on the surface thereof, and a layer of microcapsules, said layer of microcapsules including a coupling agent to improve the adhesion of said microcapsule layer to said metal layer; the coupling agent is preferably a silane.

Abstract: A recording sheet which comprises a substrate having a layer of a metal on the surface thereof and a layer of microcapsules, said microcapsules being bonded to one another by means of a crosslinking agent which has reactively interacted with reactive moieties on the surface of said microcapsules, to improve the adhesion of said microcapsule layer to said metal layer.

Abstract: A photosensitive composition resistant to short time scale reciprocity failure is disclosed. The composition comprises microcapsules having an internal phase containing an image forming agent; a photohardenable composition comprising a free radical addition polymerizable or crosslinkable compound and a photoinitiator; and a viscosity modifier for increasing the viscosity of said internal phase.

Abstract: A method for producing images utilizing photohardenable microcapsules and a reversal phenomenon is disclosed. The microcapsules contain a color former, a photopolymerizable or cross-linkable monomer and a photoinitiator. A substrate containing the microcapsules is image-wise exposed to a high intensity, short term exposure of actinic radiation to cause reversal in the exposed microcapsules. The substrate is then given an overall exposure to polymerize the microcapsules which had not completely reversed. The microcapsules are then ruptured in the presence of a developer material to produce a negative image. In addition the inventive method may be used to produce copies by a "direct-write" copying process.