摘要:
A positive photoresist composition including an alkali-soluble resin and a photosensitive agent including 1,2-naphthoquinone-diazide group. A first composition wherein the photosensitive agent is an ester of 1,2-naphthoquinone-(2)-diazide-6-sulfonic acid and alcohols or phenols, or a sulfonamide of 1,2-naphthoquinone-(2)-diazide-6-sulfonic acid and organic amines.A second composition wherein the photosensitive agent comprises (a) an ester compound of 1,2-naphthoquinone-(2)-diazide-6-sulfonic acid and phenols and (b) an ester of 1,2-naphthoquinone-(2)-diazide-5-sulfonic acid and phenols and/or an ester of 1,2-naphthoquinone-(2)-diazide-4-sulfonic acid and phenols.A third composition wherein the photosensitive agent is a product obtained by condensation of phenols with (a) 1,2-naphthoquinone-(2)-diazide-6-sulfonylhalide and (b) 1,2-naphthoquinone-(2)-diazide-5-sulfonylhalide and/or 1,2-naphthoquinone-(2)-diazide-4-sulfonylhalide.A pattern formation method using the above positive photoresist compositions including:(1) forming a positive photoresist layer on a substrate,(2) exposing the positive photoresist layer to a predetermined pattern, and(3) developing the positive photoresist layer with an alkaline developing solution.This invention allows flexible setting of parameters A and B of the photoresist over a fairly wide range and is particularly suitable for use in the formation of fine patterns for various semiconductor ICs and magnetic valves.
摘要:
A photosensitive colored resin composition for the formation of colored images includes (a) a resin-based material hardenable with an acid, (b) a photoreactive acid-releasing agent, and (c) a pigment.A colored image formation method of a color filter suitable for liquid crystal display panel applications includes the steps of:(1) coating a photosensitive colored resin composition including (a) a resin-based material hardenable with an acid, (b) a photoreactive acid-releasing agent, and (c) a pigment on a transparent substrate, and drying the coating to form a colored resin layer;(2) pattern exposing the colored resin layer;(3) heating the exposed colored resin layer; and(4) developing the exposed and heated colored resin layer with an alkaline developing solution to form a colored image on the transparent substrate,the steps being repeated to form a multi-colored image on the same substrate.A formation method of a black matrix for the formation of a color filter having red, green, and blue picture elements and a black matrix provided on a transparent substrate includes the steps of:(1) coating a photosensitive black resin composition comprising (a) a resin-based material hardenable with an acid, (b) a photoreactive acid-releasing agent, and (c) a black pigment on a transparent substrate, and drying the coating to form a black resin layer;(2) pattern exposing the black resin layer;(3) heating the exposed black resin layer; and(4) developing the exposed and heated black resin layer.
摘要:
A stairway lift is provided on the treads of a stairway along a sidewall. A guide of the lift is provided on the treads along the sidewall so that a space is formed between the sidewall and the guide. The guide has a first side that faces the sidewall, a first rail provided on the first side, a chain rack on the first side that extends along the sidewall and a second side that faces away from the sidewall. A mobile body is supported by the first rail in the space formed between the sidewall and the guide. The mobile body has a drive sprocket engageable with the chain rack and an electric motor coupled with the drive sprocket for rotatively driving the drive sprocket. A carrier is provided for carrying a person or object to be moved along the stairway. A coupling arrangement couples the mobile body and the carrier so that the carrier is removably supported by the mobile body on the second side of the guide and guided for travel by the guide. The carrier can thus ascend and descend the stairway together with the mobile body.
摘要:
A stable sodium percarbonate having excellent stability when incorporated into a bleaching agent composition or a detergent composition, particularly a zeolite-containing detergent composition. The stable sodium percarbonate is produced by a process which comprises a step of treating sodium percarbonate on the surface with at least one coating agent selected from the group (A) consisting of boric acids, borates and alkali metal silicates and at least one coating agent selected from the group (B) consisting of carbonates, hydrogencarbonates and sulfates, and at least one coating agent selected from the group consisting of coating agents belonging to groups (A) and (B) being present in the form of an aqueous coating slurry thereof.
摘要:
A photosensitive agent comprising an aromatic diazide compound represented by Formula (I) ##STR1## wherein X denotes ##STR2## Y denotes --CH.dbd.CH--, ##STR3## R.sub.1 is --CH.sub.2 CH.sub.2 --, R.sub.2 --CH.sub.2 CH.sub.3, R.sub.3 is hydrogen, m is 1, and n is 1,R.sub.6, R.sub.7, R.sub.8, R.sub.9, and R.sub.10 are individually hydrogen, alkyl, substituted alkyl, aryl, or two of R.sub.6 to R.sub.9 form alkylene groups, provided that R.sub.6 to R.sub.9 are not all hydrogen simultaneouslyand use of the photosensitive agent in a photosensitive composition and in a method forming forming an image.
摘要:
A hot gas containing nitrogen oxides is admixed with ammonia and hydrogen peroxide to reduce the nitrogen oxides to nitrogen and water. Reduction reaction of the nitrogen oxides by ammonia is considerably promoted in a temperature range of 400.degree. to 800.degree. C. by the addition of hydrogen peroxide, and also ammonia present in excess of the nitrogen oxides is decomposed thereby, eliminating an unreacted ammonia effluent.
摘要:
In a process for the thermal cracking of a heavy hydrocarbon in a cylindrical reactor, a portion of the content material in the reactor is taken out and injected back into the reactor according to a specific procedure to form a "wet wall" or liquid curtain on the inner peripheral wall of the reactor, thereby preventing coking in the reactor.
摘要:
The present invention relates to a process for removing nitrogen oxides contained in a gaseous mixture such as combustion flue gas, etc. by reduction of the nitrogen oxides with ammonia, and a cuprous or cupric halide is used as a catalyst to carry out the reduction in a low temperature range. As a result, nitrogen oxides can be satisfactorily removed by the reduction even at about 150.degree. C.
摘要:
The present invention provides a composition for forming a liquid crystal layer which enables to achieve takt time reduction and high display quality. The liquid crystal display device according to the present invention includes a liquid crystal material, and a monomer, the monomer being a compound having a structure that generates ketyl radicals when undergoing a hydrogen abstraction reaction caused by exposure to light.
摘要:
A step-down circuit lowers a voltage outputted from a commercial power supply. A step-down-output control and charge control circuit controls a step-down voltage and charges a capacitor bank based on a step-down voltage outputted. A constant-voltage generating circuit generates a constant voltage based on an output of the capacitor bank or an output of the step-down circuit. An image-forming-apparatus control circuit supplies the constant voltage to a load that performs an image forming operation.