Abstract: A method of manufacturing a solid polymer electrolyte which comprises polymerizing an ester polymethoxyoxyalkylene, a diester polyoxyalkylene, an oxycompound having a double bond, and an inorganic salt, and the solid polymer electrolyte thus obtained. The electrolyte is suitable for application in electrochemical devices such as primary or secondary battery, condenser or electrochromic display.

Abstract: This invention relates to a composition of a water-soluble photopolymer which is synthesized from a water-soluble organic matter, which matter is a base polymer produced and refined particularly by bacterial culture biotechnically and contains at least one of polysaccharides, protein, gelatin, casein, polyvinyl pyrrolidone and polyvinyl alcohol, in particular pullulan which is a natural polysaccharide, and chemicals to add functions to aqueous solution of the base polymer, for example, water-soluble radiation sensitive chemical, crosslinking agent, catalyst, epoxy compound, and a compound possessing bleaching or fading action with respect to radiation.The water-soluble photopolymer can be developed in water, and is high in safety and small in aging, and is expected to be used as the material of single-layer resist or multi-layer resist of high resolution and high resistance, or as the material for contrast enhanced litography.

Abstract: 1. A resist for use in forming a positive pattern with a radiation comprising a copolymer composed of methyl methacrylate and methacrylic acid and a cross-linking agent having the following general formula: ##STR1## wherein R is H or CH.sub.3, x is an integer of 1 to 9, and y and z are zero, or an integer of 1 to 3.2. A process for forming a positive pattern on a substrate with a radiation.