Nippon Paint Compnay, Ltd.

Akira Matsumura

Masashi Ohata

Katsukiyo Ishikawa

Atsushi Kawakami

Teruaki Kuwajima

Takahito Kishida

Ryuzo Mizuguchi

Satoshi Urano

Kei Aoki

Noriyuki Tsuboniwa

Yuji Suzuki

Mamoru Seio

Nobuo Furuno

Junji Furukawa

Yasuo Nozaki

Takeshi Oka

Process for producing multicolor display

Disclosed is a positive type resist composition which can form a good pattern by subjecting a resist layer to plural exposures and developments, which results in excellent adhesion between the resist layer and a substrate. The composition comprises: (a) a polymer having an acid value of 2 to 200, prepared from 20 to 94% by weight of a t-butyl ester of a .alpha.,.beta.-ethylenically unsaturated carboxylic acid, 5 to 79% by weight of a (meth)acrylate of the formula:

Resist composition

Disclosed is a simple correction method of defects in color layer, which occur in production of color filter. The method does not have the problems associated with the conventional correction methods. The present invention provides a method for correcting defects in a color filter, comprising: (a) forming an electrodeposited film having certain color by means of electrodeposition method on defect portions of a color filter which comprises a transparent substrate, a transparent electrode formed on at least a portion of the transparent substrate and a color layer having a color pattern formed thereon, wherein the color layer has defect portions that formation of the color layer is incomplete, and (b) curing the electrodeposited film with heat or ultraviolet light.

Method for correcting defect in color filter

The present invention provides a process for producing a multicolor display without a photolithographic process which requires registration. The process comprises forming a transparent electroconductive layer on a transparent substrate, forming a desired colored layer patterned thereon, and subjecting the transparent electroconductive layer exposed between the gap of the patterned colored layers to a metal electroplating (or electrolytic reduction) to form a light-shielding layer.

Disclosed is a process for plating a metallic deposit between functional pattern lines on a substrate, comprising (a) forming a cured film containing a catalyst for electroless plating on the substrate, (b) forming functional pattern lines on said cured film, and (c) conducting electroless plating.

Process for plating a metallic deposit between functional pattern lines

The present invention provides an improved process for forming a color filter for a color display. The process comprises:

Production of color filter

The present invention provides a process for forming a solder mask on an electric circuit board without any defects. The process comprises forming an electric circuit on a substrate, coating a negative type photosensitive solder resist on the obtained electric circuit board, and then exposing to light through a negative film followed by developing, characterized in that the negative type photosensitive solder resist is electrodepositable and said coating of the solder resist is conducted by electrocoating the resist on an electroconductive transfer substrate which is different from the electric circuit board and then transferring the coated film onto the electric circuit board.

Production of solder masked electric circuit boards

A process for preparing a color display comprising the following steps:

Production of color display

The first embodiment of the present invention is a process for producing a multicolor display comprising the following steps (a) a transfer panel which has thereon electroconductive layers insulated with each other is immersed in an electrodeposition bath, in which a voltage is applied to one or more of said electroconductive layers to be colored with a same color to form the color layer thereon, (b) said step (a) is repeated with the other colors to form a multicolor layer, and (c) said multicolor layer is transferred onto a transparent substrate. The second embodiment of the present invention is an improved process of the first embodiment, wherein both the multicolor layer and the electroconductive layer are transferred onto the transparent substrate.

Production of multicolor display

A process for preparing alkenoyl isocyanates of the formula: ##STR1## wherein R is a hydrogen atom or a lower alkyl group which comprises subjecting an oxazolinedione hydrohalide of the formula: ##STR2## wherein X is a halogen atom and R is as defined above to decomposition under an ordinary pressure, in the presence of a hydrogen halide-eliminating agent and/or in a liquid medium having a dielectric constant of not more than 4.

Preparation of alkenoyl isocyanates

A cathode-depositing electrocoating composition which comprises as a film-forming component a carbon-to-carbon double bond containing resin having a principal chain of acetylene-conjugated diene random copolymer and a basic group, combined to the principal chain in a ratio of from 0.02 to 0.8 mol per 100 g of said resin and capable of forming in an aqueous medium a group of the formula: ##STR1## wherein R.sub.1 and R.sub.2, which are the same or different, are each a hydrogen atom, a halogen atom or a hydrocarbon residue having 1 to 6 carbon atoms, R.sub.3 and R.sub.4 which are the same or different, are each a hydrogen atom or an organic residue having 1 to 10 carbon atoms or are combined to form together with the intermediary nitrogen atom a cyclic group having 1 to 7 carbon atoms, and X is a hydrogen atom or a bond, and when X is a bond, both the carbon atoms carrying R.sub.1 and R.sub.2 are bonded or belong to the principal chain, said resin being dissolved or dispersed in an aqueous medium through neutralization with an acid. Such composition is excellent in low temperature curing property.

Cathode-depositing electrocoating composition, and production thereof

A process for preparing copolymers of acetylene and conjugated diene compounds by copolymerization of acetylene with at least one conjugated diene compound in the presence of a catalyst composition in a reactor, characterized in that the catalyst composition comprises a dialkyl aluminum halide, an organic nickel compound and an active hydrogen compound, of which the molar concentrations have the following relationships:

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Hirakata, Japan

Akira Matsumura