Nippon Oil Fats Co., Ltd.

Hisao Ogawa

Masahiro Ishidoya

Toshio Yamamoto

Yoshiaki Matsukura

Osamu Ohe

Yoshiro Matsubara

Toshiya Kitamura

Ken Nakashima

Hitoshi Taniguchi

Toru Soma

A pigment dispersing agent for paints is constituted with a particular acrylic polymer component having a tertiary amino group and/or a nitrogen-containing heterocyclic ring and a particular polyester component, and has particular number average molecular weight and amine value. This pigment dispersing agent is applicable to both acrylic resin series and polyester resin series paints as well as thermosetting type paints.

Pigment dispersing agent

An aqueous dispersion coating material containing, as a film-forming constituent, an aqueous dispersion that can be obtained by contacting with an aqueous medium, a base-neutralized resin reaction product with an acid value of 10 to 30 which can be obtained by reacting a water-soluble epoxy-denatured alkyd resin with an epoxy resin in solid state at ordinary temperature and by adding and polymerizing at least a part of these resins and then neutralizing the resin reaction product with a base. Because this coating material has been emulsified in a translucent colloidal emulsion region with an aqueous medium, its finished appearance and corrosion resistance are superior and its structural viscosity can be controlled without damaging the storage stability through the addition of organic solvents, and the excellent finished appearance can also be obtained by atomization coating in addition to immersion coating, flow coating and the like, of vertical areas, and this coating material has applicability to a variety of coating methods.

Aqueous dispersion coating material containing epoxy denatured alkyd

A pigment dispersing agent for paints is a combination of particular amine compound and particular acrylic copolymer or a combination of particular amine compound, particular acrylic copolymer and particular polyester resin. This pigment dispersing agent is applicable to both acrylic resin series paints and polyester resin series paints.

An aqueous dispersion type coating material capable of forming a coated film having high water resisting properties and mechanical strength contains, as a film forming constitent, an aqueous dispersion of a resin reactant of a hydrophobic, high molecular weight, linear polyester resin excellent in water resisting property and mechanical strength and a low polarity water-soluble polyester resin. Since in this coating material, the hydrophobic high molecular linear polyester resin is added to a water-soluble polyester resin and emulsified into water in the particle size of colloidal emulsion region, the coated film is excellent in adhesive property, storage stability, finished appearance and other coated film performance.

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Zushi, Japan

Hisao Ogawa