Sumitomo Seika Chemicals Co.

Kako, Japan

Sumitomo Seika Chemicals Co.

Kako, Japan
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Patent
Sumitomo Seika Chemicals Co. | Date: 2017-05-17

Provided are: a water-absorbent resin which has a better water absorption performance and with which it is possible to improve absorption performance under a load when used in an absorbent material; and an absorbent article using an absorbent material that includes the water-absorbent resin. This water-absorbent resin, obtained by polymerising a water soluble ethylenically unsaturated monomer in the presence of an internal-crosslinking agent and by post-crosslinking using a post-crosslinking agent, has a water-absorption capacity of physiological saline under a load of 4.14 kPa of 16 mL/g or more, has a mass proportion of particles from 150 to 850 m relative to the whole proportion of 85 mass% or more, moreover has a mass proportion of particles from 300 to 400 m relative to the whole proportion of 20 mass% or more, and has an absorption capacity elasticity index represented by formula (I) of 68,000 or more. Absorption capacity elasticity index = storage elastic modulus [Pa] centrifugal retention rate [g/g] ...(I)


Patent
Sumitomo Seika Chemicals Co. | Date: 2017-07-05

The present invention aims to provide a polyester resin composition capable of producing a molded article having excellent stretchability. The present invention also aims to provide a molded article including the polyester resin composition. The present invention relates to a polyester resin composition including: a polyester resin; and a polyrotaxane that has a cyclic molecule, a linear molecule threading through a cavity of the cyclic molecule in a skewered manner, and capping groups capping both ends of the linear molecule.


Patent
Sumitomo Seika Chemicals Co., Japan National Institute of Advanced Industrial Science, Technology and Ceramission Co. | Date: 2017-02-22

The present invention provides a heat dissipation film having high mechanical strength and flexibility, which is obtained by laminating a heat emission layer excellent in heat dissipation by infrared radiation, electrical insulation, and heat resistance on a metal film having excellent heat transfer efficiency. The present invention also provides a dispersion for heat emission layers for use in the production of the heat dissipation film, a method for producing a heat dissipation film using the dispersion for heat emission layers, and a solar cell including the heat dissipation film. The present invention provides a heat dissipation film including a heat transfer layer; and a flexible heat emission layer laminated on the heat transfer layer, the heat transfer layer being a metal film, the heat emission layer containing a water-insoluble inorganic compound and a heat-resistant synthetic resin, the amount of the water-insoluble inorganic compound in the heat emission layer being 30 to 90% by weight relative to the total weight of the heat emission layer, the heat emission layer having a thermal emissivity of at least 0.8 and a dielectric breakdown strength of at least 10 kV/mm.


Patent
Sumitomo Seika Chemicals Co. | Date: 2017-02-01

Provided is a method for producing water-absorbent resin particles suitable for use in absorbent article and the like, the water-absorbent resin particles having better water-absorbent performance, a suitable particle size, and a narrow particle-size distribution. A method for producing water-absorbent resin particles by reversed-phase suspension polymerization of a water-soluble ethylenic unsaturated monomer in a carrier fluid, wherein the method for producing water-absorbent resin particles comprises conducting the reversed-phase suspension polymerization reaction in the presence of an organic acid monoglyceride.


The present invention aims to provide an additive for a non-aqueous electrolyte solution which has excellent storage stability and which, when used in an electrical storage device, can form a stable SEI on the surface of an electrode to improve battery characteristics such as the cycle characteristics, the charge/discharge capacity, the high-temperature storage characteristics, suppression of gas generation, and reduction in the internal resistance. The present invention also aims to provide a non-aqueous electrolyte solution containing the additive for a non-aqueous electrolyte solution and an electrical storage device containing the non-aqueous electrolyte solution. The present invention relates to an additive for a non-aqueous electrolyte solution, the additive containing a cyclic imide compound represented by Formula (1-1), Formula (1-2), Formula (1-3), Formula (1-4), Formula (1-5), or Formula (1-6). R^(1) in Formula (1-1), R^(3) in Formula (1-2), R^(5) in Formula (1-3), R^(7) in Formula (1-4), R^(9) in Formula (1-5), and R^(11) in Formula (1-6) each independently represent a substituted or unsubstituted C1-C4 alkyl group, a substituted or unsubstituted C2-C4 alkenyl group, a substituted or unsubstituted C1-C4 alkoxy group, a substituted or unsubstituted phenyl group, a substituted or unsubstituted phenoxy group, a substituted or unsubstituted benzyl group, a substituted or unsubstituted benzyloxy group, a substituted or unsubstituted C2-C6 alkenyloxy group, or a NR^(13)R^(14) group, R^(13) and R^(14) each independently representing a hydrogen atom, a substituted or unsubstituted C1-C4 alkyl group, a substituted or unsubstituted C2-C4 alkenyl group, a substituted or unsubstituted phenyl group, or a substituted or unsubstituted benzyl group; R^(2) in Formula (1-1), R^(4) in Formula (1-2), R^(6) in Formula (1-3), R^(8) in Formula (1-4), R^(10) in Formula (1-5), and R^(12) in Formula (1-6) each independently represent a substituted or unsubstituted C1-C4 alkyl group, a substituted or unsubstituted C1-C4 alkoxy group, or a halogen atom; 1 in Formula (1-1) represents an integer of 0 to 4; m in Formula (1-2) represents an integer of 0 to 2; n in Formula (1-3) represents an integer of 0 to 2; o in Formula (1-4) represents an integer of 0 to 4; p in Formula (1-5) represents an integer of 0 to 4; and q in Formula (1-6) represents an integer of 0 to 6.


Patent
Sumitomo Seika Chemicals Co. | Date: 2017-02-08

Provided is an alkylene oxide polymer production method, whereby it becomes possible to produce an alkylene oxide polymer having a high polymerization degree on an industrial scale and with high reproducibility. An alkylene oxide polymer production method comprising carrying out a polymerization reaction of an alkylene oxide in an inert hydrocarbon solvent in the presence of a zinc catalyst to produce an alkylene oxide polymer, wherein the zinc catalyst is produced by reacting an organozinc compound with a monohydric alcohol in an amount of 12-fold equivalent or less relative to the amount of the organozinc compound and an aliphatic polyhydric alcohol in an amount of 0.2- to 1.1-fold equivalent relative to the amount of the organozinc compound, and the polymerization reaction is carried out under such a condition that the amount of the monohydric alcohol in the polymerization reaction system becomes 0.01-fold equivalent or less relative to the amount of the organozinc compound.


Patent
Sumitomo Seika Chemicals Co. | Date: 2017-02-22

The present invention aims to provide a solvent for an electrolytic solution of electrochemical devices which is chemically stable at high temperatures over a long period of time and is stably liquid at low temperatures. The present invention relates to a solvent for an electrolytic solution of electrochemical devices, including: a cyclic sulfone compound represented by the formula (1):^(1) and R^(2) each independently represent a linear or branched C1-C5 alkyl group, and may be the same as or different from each other; and at least one of an organic amine compound and 4-tert-butylcatechol.


A binder for an electric double-layer capacitor electrode according to the present invention includes a copolymer of vinyl alcohol and an alkali metal-neutralized product of ethylene-unsaturated carboxylic acid.


Patent
Sumitomo Seika Chemicals Co. | Date: 2017-04-12

Provided is a water-absorbent resin that increases the diffusivity of a to-be-absorbed liquid and that makes it possible to effectively decrease the amount of re-wet. The water-absorbent resin is obtained by polymerizing a water-soluble ethylenicallyally unsaturated monomer under the presence of an internal-crosslinking agent, has the water-absorption capacity of physiological saline under a load of 4.14 kPa at 120 minutes passed from the start of water absorption of 20 ml/g or more, and exhibits the degree of swelling under a load at 30 minutes of 70% or less when the water-absorption capacity of physiological saline under a load of 4.14 kPa at 120 minutes from the start of water absorption is designated as the degree of swelling under a load of 100%. The water-absorbent resin can be produced by performing the following steps in a method in which a water-absorbent resin is produced by performing reverse phase suspension polymerization of a water-soluble ethylenicallyally unsaturated monomer in a hydrocarbon dispersion medium under the presence of an internal-crosslinking agent: a step in which polymerization is performed under the presence of an azo compound and a peroxide; and a step in which a water-containing gel obtained by said polymerization is post-crosslinked using a post-crosslinking agent.


Patent
Sumitomo Seika Chemicals Co. | Date: 2017-04-12

Provided are: a water-absorbent resin which, when used as an absorbent material, retains a high water-absorption performance, increases the diffusivity of a to-be-absorbed liquid and makes it possible to effectively decrease the amount of re-wet; and an absorbent article formed using an absorbent material including the water-absorbent resin. The water-absorbent resin according to the present invention is a water-absorbent resin obtained by polymerizing a water-soluble ethylenically monomer in the presence of an internal-crosslinking agent and thereafter post-crosslinking the polymer with a post-crosslinking agent, characterized in that when subjected to a liquid flow test, the water-absorbent resin has an effective absorbent material index (K) indicated by equation (I) of 250 or greater.

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