Diazotype material having enhanced water-wet properties and especially suitable when imaged for being drawn or written upon, and for use as an intermediate original, is made of a support such as a transparent polymeric film carrying on one of its sides a light sensitive diazo layer formed of a dispersion of a light sensitive diazonium compound and a large amount of amorphous hydrated silica particles having a bound water content of at least 50% by weight in a polymeric binder consisting essentially of a 20 to 45% hydrolyzed polyvinyl acetate which preferably is a product of partial hydrolysis of a PVAC having in ethyl acetate at 20.degree. C. a Heoppler viscosity of 100 to 800 mPa.s. The weight ratio of the hydrated silica to the partially hydrated PVAC in the layer typically is in the range of 2:3 to 3:2. The support advantageously carries on its other side a light-pervious drafting layer formed of a dispersion of a silica filler in a partially hydrolyzed PVAC the same as that required for the diazo layer. Adherence of the specified layers and drafting properties of the material can be enhanced by coating on each side of the film, before applying those layers, a subbing layer formed of polymeric material, e.g. a mixture of a vinylidene chloride-acrylonitrile copolymer and a methylated melamine-formaldehyde resin, that is adherent to the film surface and contains a silica pigment which preferably is the same as that of the drafting layer. An advantageous one component diazotype material is obtained by incorporating a suitable diazonium salt in the diazo layer in the absence of an azo coupling agent, while such a two component diazotype material is obtained by making that layer to contain an azo coupling agent with a suitable diazonium salt.
Disclosed is a heat-sensitive recording material comprising a support comprised of a substrate and a thermoplastic resin layer formed thereon, and a heat-sensitive recording layer disposed on the support and containing a diazonium salt compound capable of being decomposed by ultraviolet light, wherein the thermoplastic resin layer is formed by melt extrusion and wherein the thermoplastic resin layer contains a fluorescent brightening agent and a white pigment. In the heat-sensitive recording material, the fluorescent brightening agent is preferably a compound represented by the following structural formula (I): Structural Formula (I) ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, and R.sub.4 each represent a hydrogen atom, or a substituent group or a substituent atom.
An aqueous diazo coating composition is disclosed to be used in accordance with an alkaline vapor development system, containing a hydrolyzed resin together with a diazo light-sensitive compound, coupling agent and stabilizing materials. The aqueous diazo coating composition of the present invention provides a method of fabricating a light-sensitive diazo member for use in combination with a development system utilizing alkaline vapors which excludes the use of organic solvents.
Disclosed are a monomer, a polymer for a photoresist, a photoresist composition and a phosphor layer for a cathode ray tube. The polymer has the formula 1: ##STR1## wherein:R.sub.1 is H or CH.sub.3, R.sub.2 is (R).sub..alpha. (CH.sub.2).sub..beta. R' or (R).sub..alpha. ((CH.sub.2).sub.m O).sub..gamma. R', wherein R is CO, CO.sub.2, O, OCO or OCO.sub.2, R' is O, CO.sub.2, or OCO.sub.2, .alpha. is 0 or 1, .beta. is 0 to 5, m is 1 or 2, and .gamma. is 1 to 5, ##STR2## R.sub.4, which combines an acetal compound and a vinyl compound, is a saturated or unsaturated C.sub.1 -C.sub.5 alkyl, a C.sub.1 -C.sub.5 ether, or a C.sub.1 -C.sub.5 carbonyl; R.sub.5 is a saturated or unsaturated C.sub.1 -C.sub.5 alkyl, a C.sub.1 -C.sub.5 ether, or a C.sub.1 -C.sub.5 carbonyl; R.sub.6 and R.sub.8 are identical or are each independently a single bond, (R).sub..alpha. (CH.sub.2).sub..beta. R' or (R).sub..alpha. ((CH.sub.2) .sub.m O).sub..gamma. R', wherein R is CO, CO.sub.2, O, OCO or OCO.sub.2, R' is O, CO.sub.2, or OCO.sub.2, .alpha. is 0 or 1, .beta. is 0 to 5, m is 1 or 2, and .gamma. is 1 to 5; R.sub.7 is a hydroxyl group; R.sub.9 is a carboxyl group; a, b, and c each represent the mole ratio of its corresponding monomer, wherein a and b each have a value of 0 to 0.99, and c has a value of 0.01 to 0.3; and n represents the degree of polymerization of each polymer and has a value of at least 2.
