Kao Corporation

Minoru Sawai

Masahiro Mori

Kyoichi Watanabe

Takamitsu Saito

Kazuo Oki

Kazunari Takemura

Hiroaki Kitayama

Tamaki Miura

Kenichi Miyamoto

Yoichi Ishibashi

Makoto Okubo

Hiroshi Kitagawa

The burned composite metal oxide of the present invention is a burned composite metal oxide which is porous and particulate and which is obtained by subjecting a slurry comprising at least one metal oxide (a), at least one metal compound (b) and a solvent to spray granulation to obtain granules, and burning the granules, the metal oxide (a) selected from the group consisting of a transition metal oxide and an oxide of a metal belonging to 3B, 4B and 5B of a periodic table, the metal compound (b) selected from the group consisting of an alkali metal compound and an alkali earth metal compound, wherein the metal oxide (a) and the metal compound (b) are sparingly soluble in the solvent; the burning is conducted after a heat-maintaining step of heating the granules obtained by the spray granulation at a temperature in a range of &#xb1;200&#xb0; C. based on the decomposition temperature of the metal compound (b); and the metal compound (b) contains at least a nonmetallic element component desorbed in the heat-maintaining step.

Burned composite metal oxide and process for producing the same

The present invention provides a composite material for positive electrodes of lithium batteries, which provides a lithium battery having excellent high rate electrical discharge characteristics, has a sufficiently secured diffusion passage for Li, and has high conductivity, a process for producing the same, as well as a positive electrode and a battery using the composite material for positive electrodes of lithium batteries. The present invention relates to a composite material for positive electrodes of lithium batteries, comprising composite particles containing positive electrode active material particles and fibrous carbons, wherein the composite particles have a form in which the positive electrode active material particles are supported by the fibrous carbons.

Composite material for positive electrode of lithium battery

A foamed article having a density of at least 0.1 g/cm, a single glass transition temperature within the temperature range of &#x2212;20&#xb0; to 60&#xb0; C., a storage modulus (E') of 0.5 to 2 MPa and tan &#x3b4; of 0.16 to 0.5 as obtained from dynamic viscoelasticity at a frequency of 10 Hz and a temperature of 25&#xb0; C. The foamed article can be used for a member for shoe soles, a shoe sole and the like.

Foamed article

A process for producing a polyurethane foam which comprises mixing a polyol solution comprising 100 parts by weight of a polyester-polyol, 0.1 to 1.8 parts by weight of water and 0.1 to 5 parts by weight of urea, and a catalyst with a polyisocyanate compound and foaming the mixture. According to the process, there can be produced a polyurethane foam which satisfies both productivity and moldability even when having a low density, and is suitable for use in shoe soles.

Process for producing polyurethane foam

A process for preparing a polyurethane foam, comprising reacting a polyol having a number-average molecular weight of not less than 1000 and less than 2500 with a polyisocyante compound in the presence of a catalyst and a blowing agent in a mold, to give a molded article having a density of 0.4 to 0.8 g/cm , and heating the resulting molded article to a temperature of 60&deg; to 100&deg; C. The polyurethane foam is used as a cushioning material such as shoe soles of sports shoes.

Polyurethane foam

A polyester-polyol being liquid at 40&deg; C. and having a viscosity of not more than 10,000 mPa&middot;s at 60&deg; C., prepared by polycondensation of an acid component including at least one phthalic acid component selected from phthalic anhydride and o-phthalic acid, and an aliphatic polybasic acid, with a polyhydric alcohol; a process for preparing a polyurethane foam including reacting a polyisocyanate component with a polyol component including the polyester-polyol; a process for preparing an isocyanate prepolymer from a polyisocyanate component and a polyol component including the polyester-polyol; and a process for preparing a polyurethane foam including reacting an isocyanate prepolymer prepared from a polyisocyanate component and a polyol component including the polyester-polyol, with a polyol component. The resulting polyurethane foam shows remarkably improved physical properties such as tensile strength and tear strength, while having low density, acceptable appearance and texture.

Low viscosity polyester-polyols and polyurethane foams prepared therefrom

A deinking method for obtaining regenerated pulp of high brightness is provided. One or more of deinking agents selected from (a-1) to (a-2) given below are used, and a deinking step is carried out, in which a washing step is carried out at treating temperatures from 40 to 80.degree. C.;

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Wakayama, Japan

Minoru Sawai