Sumitomo Electric Industries, Limited

Matsutani Chemical Industry Co., Ltd.

Matsutani Chemical Industries Co., Ltd.

Japan Chemical Engineering & Machinery Co., Ltd.

Kensaku Shimada

Kazuyuki Sohma

Yuya Homma

Yasuo Katta

Tatsuya Konishi

Takeshi Inoue

Toshihisa Yokochi

Isao Matsuda

Taisuke Nagasaki

Takashi Ichihara

Tomonori Morimoto

Pushpa Kiran Gullapalli

Tomoya Shintani

Masaki Gouro

Takahiko Tsumiya

Akifumi Uesumi

Yasuhiro Takami

Mikie Fukushima

Takamasa Kiyoshima

Yuko Uehara

Yoshiaki Maeda

Junichiro Nishioka

An optical module includes an optical component, a substrate including a main surface, a mount portion provided on the main surface of the substrate, and at least one measurement reference portion provided on the main surface of the substrate at a position apart from the mount portion. The substrate mounts the optical component thereon. The mount portion is configured to mount the optical component thereon. The measurement reference portion includes a reference point that becomes a height reference when measuring a mount height of the optical component.

Optical module and method of manufacturing optical module

An optical fiber comprises a glass fiber comprising a core and a cladding; and a coating resin layer coating the glass fiber, wherein the coating resin layer has a primary resin layer in contact with the glass fiber and coating the glass fiber and a secondary resin layer coating the outer periphery of the primary resin layer, the primary resin layer has a Young's modulus of 0.4 MPa or less at 23&#xb0; C. and the primary resin layer has an outer diameter of 185 &#x3bc;m or more and 202 &#x3bc;m or less, the secondary resin layer has a glass transition temperature of 60&#xb0; C. or more and 95&#xb0; C. or less, and the difference between the average linear expansion coefficient of the coating resin layer in the range of 60&#xb0; C. to 140&#xb0; C. and the average linear expansion coefficient of the coating resin layer in the range of &#x2212;60&#xb0; C. to 0&#xb0; C. is 0.7&#xd7;10/&#xb0; C. or less.

Optical fiber with primary and secondary coating layers

A splicing structure of optical fibers in which optical fibers are coupled together, the optical fibers each comprising: a coated fiber portion including a glass fiber and a coating layer coating an outer periphery of the glass fiber; and a bare fiber portion where a certain length of the glass fiber is projected from an end face of the coating layer in an extending direction, wherein the glass fiber end faces of the bare fiber portion are fusion coupled together, and an outer periphery of the bare fiber portion is coated by a recoating layer, the recoating layer is a cured product of an ultraviolet light curable resin composition including a urethane (meth)acrylate oligomer and a mold release agent, and a content of the mold release agent is 0.01 to 1.5% by mass based on a total amount of the ultraviolet light curable resin composition.

Splicing structure of optical fibers

An optical fiber includes an optical transmission medium comprising a core and a cladding; a primary resin layer disposed in contact with the optical transmission medium to coat the optical transmission medium; and a secondary resin layer coating the primary resin layer, and 1.1 ppm or less of a phosphorus compound and 2.5% by mass or less of a phenol compound based on the total amount of the primary resin layer are contained in the primary resin layer.

Optical fiber

In an ultraviolet-curable resin composition for an optical fiber coating, the polarity parameter E(30) of the resin composition is 47 to 61.

Ultraviolet-curable resin composition and optical fiber

An optical fiber includes an optical transmission medium having a core and a cladding, a primary resin layer disposed in contact with the optical transmission medium to coat the optical transmission medium, and a secondary resin layer coating the primary resin layer, wherein a Young's modulus of the primary resin layer is 0.5 MPa or less at 23&#xb0; C., and the primary resin layer comprises a cured product of an ultraviolet light curable resin composition containing a urethane (meth)acrylate oligomer, a monomer, a photopolymerization initiator and a &#x3b2;-diketone compound, and tin.

A thickening composition which contains specific amounts of a metal salt-enclosing dextrin and a thickening polysaccharide and which has a good dispersibility raises the viscosity rapidly, and has an excellent thickening effect can be produced by the steps of obtaining the metal salt-enclosing dextrin by mixing, dissolving, and homogenizing a dextrin and a metal salt in water, followed by drying, and adding the metal salt-enclosing dextrin to the thickening polysaccharide followed by mixing or granulation. The thickening composition makes it possible to provide a thickening composition which has a good dispersibility, raises the viscosity rapidly, and offers an improved thickening effect per unit mass in a wide variety of water-containing foods such as water, teas, refreshing beverages, dairy beverages, soups, and thick liquid foods.

Thickening composition and method for producing same

An optical fiber includes an optical transmission medium having a core and a cladding; a primary resin layer disposed in contact with the optical transmission medium to coat the optical transmission medium; and a secondary resin layer coating the primary resin layer, wherein the primary resin layer comprises a cured product of an ultraviolet light curable resin composition comprising a urethane (meth)acrylate oligomer, a monomer and a photopolymerization initiator, and a compound containing phosphorus and tin as constituent atoms; and a Young's modulus of the primary resin layer is 0.5 MPa or less at 23&#xb0; C.

Novel findings have been made that a carbohydrate composition in which a highly branched dextrin and isomaltulose are mixed at a specific ratio, wherein the highly branched dextrin has a structure in which glucose or isomaltooligosaccharide is bound to a non-reducing terminus of a dextrin via an &#x3b1;-1,6 glycosidic bond, and has a DE value of 10 to 52, enhances an suppressing effect on digestion of the highly branched dextrin by isomaltulose, that is, synergistically suppresses the digestion, thereby leading to the completion of the present invention.

Carbohydrate composition and food and beverage producing gradual rise in blood glucose levels

The present invention provides a method for producing indigestible dextrin which is inexpensive and can simply and efficiently suppress coloring. The method for producing indigestible dextrin includes the steps of liquefying pyrodextrin and saccharifying pyrodextrin, wherein at least one of the liquefying step and the saccharifying step is performed in the presence of activated carbon.

Method for producing indigestible dextrin

The present invention provides a method for purifying cellobiose which comprises the steps of (A) preparing a cellobiose-containing sugar solution; (B) increasing the rate of cellobiose present in the sugar solution relative to the total saccharides present therein up to at least 50% by mass; and (C) crystallizing cellobiose; and a method for preparing cellobiose having a high content of the &#x3b1;-anomer thereof which comprises the step of drying a cellobiose-containing sugar solution having a rate of cellobiose of at least 90% by mass relative to the total saccharides present therein while maintaining the sugar solution at a temperature ranging from 80 to 95&#xb0; C. These methods of the present invention permit the economical preparation of cellobiose having considerably improved purity and recovery rate, without using any complicated process. Moreover, the present invention also permits the preparation of cellobiose highly soluble in water.

Purification method and production method for cellobiose

A water-soluble dietary fiber-containing composition comprises a water-soluble dietary fiber material and a thickening polysaccharide in a mixing ratio, by mass, ranging from 95:5 to 80:20 and has a solubility, in water at 30&#xb0; C., of not more than 80%. The composition may be prepared by a method comprising the steps of dissolving, in water, a water-soluble dietary fiber material and a thickening polysaccharide such that the mixing ratio of the former to the latter, by mass, ranges from 95:5 to 80:20 and then drying the resulting aqueous solution. The composition has a low solubility in water and therefore, can be incorporated into various foods, while maintaining desired excellent quality thereof without being accompanied by the reduction of the working characteristics of the raw materials for these foods.

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Osaka, Japan

Kensaku Shimada