Goo Chemical Company, Ltd.

Panasonic Intellectual Property Management Co., Ltd.

Koji Maeda

Teru Sakakibara

Yusuke Numamoto

Shinya Komabiki

Hidehiko Karasaki

Kouichi Ikegami

A protective composition is used to form a protective coating on a metal and contains a water-soluble polyester resin.

Protective composition

A protective composition contains a water-soluble polyester resin including a polyvalent carboxylic acid residue and a polyvalent alcohol residue. The polyvalent carboxylic acid residue includes: a polyvalent carboxylic acid residue having a metal sulfonate group; and a naphthalene dicarboxylic acid residue. The proportion of the polyvalent carboxylic acid residue to the polyvalent carboxylic acid residue falls within the range from 25 mol % to 70 mol %. The proportion of the naphthalene dicarboxylic acid residue to the polyvalent carboxylic acid residue falls within the range from 30 mol % to 75 mol %.

Method for fabricating semiconductor device chips and protective composition

The polyester resin for a hot melt adhesive includes polycarboxylic acid residues and polyhydric alcohol residues. The polycarboxylic acid resides contain aliphatic polycarboxylic acid residues in a proportion within the range of 50 to 80 mol %. The polyhydric alcohol residues contain propylene glycol residues in a proportion within the range 5 to 60 mol %.

Polyester resin, hot melt adhesive, and hot melt adhesive solution

Provided is a hybrid-type polyester resin which, when used in processing a base material such as textile or PET film, can impart excellent flame retardance to the base material. The hybrid-type polyester resin can be inhibited from scattering high-temperature drips, even if the hybrid-type polyester resin burns. The hybrid-type polyester resin comprises both a polyester resin and a siloxane prepared from silica and an alkoxysilane. Therefore, the hybrid-type polyester resin retains the excellent properties inherent in polyester resin and exhibits extremely excellent flame retardance by virtue of hybridization with the siloxane. Even if the hybrid-type polyester resin burns, the hybrid-type polyester resin is less susceptible to deformation, and is therefore inhibited from scattering high-temperature drips.

Hybrid-type polyester resin, resin composition for formation of film, and polyester film and textile

A water-soluble, flame retardant polyester resin is obtained by a condensation reaction or a polycondensation reaction of a dicarboxylic-acid component, a glycol component, a water-solubility imparting component and a reactive phosphorus-containing compound such that a ratio of the water-solubility imparting component in a total of the dicarboxylic-acid component and the water-solubility imparting component is in a range of 1 to 60 mol %. Since this polyester resin can be dissolved in a solvent by allowing a halogen-free, phosphorus-containing polyester with excellent flame resistance to have water solubility, it is possible to improve applicability and eliminate problems of working environment and environmental destruction resulting from organic solvents. In addition, even when treating substrates such as fibers and PET films with the polyester resin, there is no deterioration of these substrates.

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Kyoto, Japan

Koji Maeda