摘要:
Silver halide emulsions containing tabular silver halide grains are stabilized by the employment of a compound of the formula ##STR1## where R is --SO.sub.2 NH.sub.2, In a preferred embodiment an azaindene is also employed.
摘要:
Provided is a printing medium particularly useful for inkjet printing. The printing medium is comprised of a substrate and a coating layer. The coating layer comprises porous particles, a resin binder and colloidal particles, with the colloidal particle being of a size that is greater than the size of the pores of the porous particles, but smaller than the interstitial pores created by the porous particles. The printing medium allows one to realize high optical density and high image resolution, while also offering good mechanical properties, fast drying, good waterfastness and consistent performance in different environments.
摘要:
An aliphatic hybrid polyurethane/polyurea protective coating intended for use on concrete, steel, wood and other surfaces is provided, which coating exhibits excellent properties of durability and flexibility. The protective coating uses chemical components from urethane/urea systems in a unique way to generate beneficial systems.
摘要:
A novel two step process is disclosed for the manufacture of protected, distortion-free, full-color electrographic images for use on large format posters, billboards and the like. A novel electrographic element, which is used in the process, comprises a carrier layer; optionally, a protective layer; a conductive layer; a dielectric layer; and a substantially tack-free, adhesive layer which is activated at a pressure and a temperature which is above ambient pressure and temperature of the electrographic element. The novel electrographic imaging process comprises: A) producing a toned image layer on the surface of the electrographic element, so that the toned image layer is adhered to the surface of the adhesive layer; and B) pressure laminating the receptor substrate at an elevated temperature to the toned image layer to form the completed electrographic image. Optionally, the carrier layer is stripped from the conductive or protective layer which then serves to protect the electrographic image from abrasion and environmental contaminants. Alternatively, the carrier layer is conductive and, along with the conductive layer (if present), is stripped from the dielectric layer which then serves to protect the electrographic image from abrasion and environmental contaminants.
摘要:
A novel two step process is disclosed for the manufacture of protected, distortion-free, full-color electrographic images for use on large format posters, billboards and the like. A novel electrographic element, which is used in the process, comprises a carrier layer; optionally, a protective layer; a conductive layer; a dielectric layer; and a substantially tack-free, adhesive layer which is activated at a pressure and a temperature which is above ambient pressure and temperature of the electrographic element. The novel electrographic imaging process comprises: A) producing a toned image layer on the surface of the electrographic element, so that the toned image layer is adhered to the surface of the adhesive layer; and B) pressure laminating the receptor substrate at an elevated temperature to the toned image layer to form the completed electrographic image. Optionally, the carrier layer is stripped from the conductive or protective layer which then serves to protect the electrographic image from abrasion and environmental contaminants. Alternatively, the carrier layer is conductive and, along with the conductive layer (if present), is stripped from the dielectric layer which then serves to protect the electrographic image from abrasion and environmental contaminants.
摘要:
Silver halide emulsions having tabular grains with a mean aspect ratio of at least 10 are prepared by inducing twinning on the (111) crystal plane in silver bromide grains and then growing the grains in a silver halide solvent solution for a time sufficient to provide said tabular grains.
摘要:
A thermochromic coating which comprises a thermochromic compound and a polyurea resin. The thermochromic compound and polyurea resin form a thermochromic layer. The coating optionally has a protective layer containing a resin and a UV-blocking material arranged on top of the thermochromic layer. A reflective layer containing a reflective material is optionally arranged between the thermochromic layer and the substrate. A thermochromic coating is formed by applying successive reflective, thermochromic, and protective layers on a substrate.
摘要:
Provided is a system and method for protecting and restoring a surface by applying thereto a preformed polymer based film and securing the film to the surface. Particular application is found where the surface is a deck surface.
摘要:
Provided is an ink jet ink comprised of water, pigment, a water immiscible organic compound exhibiting a high boiling point, and a water miscible compound. The combination of the water immiscible compound and the water miscible compound provides for excellent anti-crusting properties, and provides an ink which upon printing makes a round dot, and which printed images exhibit excellent waterfastness, lightfastness and wet rub resistance.