Sony Corporation

Director-general of Agency of Industrial Science and Technology

Oji Kako Co., Ltd.

Hideaki Takazawa

Hiroshi Itoh

Kunihiro Ichimura

Koki Inada

Tadashi Asazuma

Shuuichi Nakazato

In a method of manufacturing a color cathode ray tube utilizing an external surface exposure process, a fluorescent slurry to be applied to a panel contains a photosensitive resin composition composed of an aqueous emulsion of polyvinyl compound resin containing a saponified polyvinyl acetate with an addition-condensed photosensitive group as a protective colloid and an aqueous solution of a saponified polyvinyl acetate with an addition-condensed photosensitive group. Accordingly, a resistance of a fluorescent layer formed on the panel against an aqueous solution of hydrogen peroxide is improved, and an anti-fogging performance of the fluorescent layer is also improved.

Method of manufacturing color cathode ray tube

A photosensitive resin composition comprising a photosensitive saponified poly(vinyl acetate) derivative containing in the backbone thereof at least one of a first group of photosensitive units which are represented by the general formula (I) ##STR1## wherein represents a vinyl alcohol residue in the backbone of the saponified poly(vinyl acetate) derivative; Y represents a member selected from the group consisting of the following general formulae (II) and (III) ##STR2## m denotes an integer of 1-6; n denotes 0 or 1; R.sub.1 represents a member selected from a hydrogen atom, an unsubstituted alkyl and an unsubstituted aralkyl group, a hydroxyl group, a carbamoyl group, an ether bond and an unsaturated bond; R.sub.2 represents a member selected from a hydrogen atom and a lower alkyl group; and X.sup.- represents an anion, and at least one of a second group of photosensitive units having an ethylenic unsaturated double bond which are represented by the general formulae (IV) and (V) ##STR3## wherein ##STR4## is as defined above; R.sub.3 represents a member selected from a hydrogen atom, a lower alkyl group, a nitrophenyl group, a halogen atom, an aminophenyl group and a phenyl group; R.sub.4, R.sub.5 and R.sub.6 respectively represent a member selected from a hydrogen atom, a lower alkyl atom, a halogen and a phenyl group; and t.sub.1 represents 0 or 1.

Saponified polyvinyl acetate derivatives which are photosensitive resin

Growing community of inventors

Utsunomiyashi, Japan

Hideaki Takazawa