Abstract: Disclosed herein is a method for manufacturing a polishing pad, including the step of filling the interior of bundles of ultrafine fibers which have an average fineness of from 0.01 to 0.8 dtex with a polymeric elastomer having a glass transition temperature of ?10° C. or below, storage moduli at 23° C. and 50° C. of from 90 to 900 MPa, and a water absorption ratio, when saturated with water at 50° C. of from 0.2 to 5 mass %. Also disclosed herein are polishing pads obtained by the method above.

Abstract: A planter bottom member is attached to a side wall member formed of a wood material and having a cylindrical shape that is open at upper and lower sides. The planter bottom member is formed of a synthetic resin and includes a lower surface cover portion, a lower end receiving portion for receiving a lower end surface of the side wall member, an outer wall cover portion for covering an outer circumferential surface of a lower end portion of the side wall member and a bottom portion having a draining hole. The lower end opening of the side wall member is closed by the bottom portion, the lower surface of the side wall member is covered by the lower surface cover portion, and the lower end outer circumferential surface of the side wall member is covered by the outer wall cover portion.

Abstract: A planter bottom member is attached to a side wall member formed of a wood material and having a cylindrical shape opened at upper and lower sides. The planter bottom member is formed of a synthetic resin and includes a lower surface cover portion, a lower end receiving portion for receiving a lower end surface of the side wall member, an outer wall cover portion to cover an outer circumferential surface of a lower end portion of the side wall member and a bottom portion having a draining hole. The lower end opening of the side wall member is closed by the bottom portion, the lower surface of the side wall member is covered by the lower surface cover portion, and the lower end outer circumference of the side wall member is covered by the outer wall cover portion.

Abstract: Provided is a hard sheet including a non-woven fabric of ultrafine fibers and elastic polymer added into the non-woven fabric. JIS-D hardness of the sheet is 45 degrees or more. R % thereof calculated by R (%)=(D hardness maximum?D hardness minimum)/D hardness average×100 is 0 to 20%, when a sectional surface of the sheet extending in the thickness direction thereof is evenly divided into three parts corresponding to a first outer layer, an intermediate layer, and a second outer layer in order from any one surface side of the sheet; JIS-D hardness measurements are made at six points being three arbitrary points each on the first outer layer and on the intermediate layer; and then the JIS-D hardnesses obtained are used for the calculation. In the sheet, the total content of ions capable of changing the pH of water is 400 ?g/cm3 or less.

Abstract: It is an object of the present invention to provide a polishing pad that is resistant to scratching and also has excellent flattening performance. One aspect of the present invention is a polishing pad, comprising a fiber-entangled body formed from fiber bundles made up of ultrafine fibers in which the average cross sectional area is between 0.01 and 30 ?m2, and a macromolecular elastomer, wherein part of the macromolecular elastomer is present inside the fiber bundles, whereby the ultrafine fibers are bundled, the number of fiber bundles per unit of surface area present in a cross section in the thickness direction is at least 600 bundles per square millimeter, and the volumetric ratio of a portion excluding voids is between 55 and 95%.

Abstract: A leather-like sheet composed of a microfine-fiber entangled body made of bundles of microfine fibers and an elastic polymer impregnated therein. The bundles of microfine fibers are composed of microfine monofibers having an average cross-sectional area of 0.1 to 30 ?m2 and have an average cross-sectional area of 40 to 400 ?m2. The bundles of microfine fibers exist in a density of 600 to 4000/mm2 on a cross section taken along the thickness direction of the microfine-fiber entangled body. The elastic polymer contains 30 to 100% by mass of a polymer of ethylenically unsaturated monomer. The polymer of ethylenically unsaturated monomer is composed of a soft component having a glass transition temperature (Tg) of less than ?5° C., a crosslinkable component, and optionally a hard component having a glass transition temperature (Tg) of higher than 50° C. and another component. The polymer of ethylenically unsaturated monomer is bonded to the microfine fibers in the bundles of microfine fibers.

Abstract: A polishing pad is disclosed which is less likely to cause scratches, and has an excellent planarization performance and polishing stability. In one aspect, the invention provides a polishing pad comprising an ultrafine fiber-entangled body formed of ultrafine fibers having an average fineness of 0.01 to 0.8 dtex, and a polymeric elastomer. The polymeric elastomer has a glass transition temperature of ?10° C. or below, storage moduli at 23° C. and 50° C. of 90 to 900 MPa, and a water absorption ratio, when saturated with water at 50° C., of 0.2 to 5 mass %.

Abstract: The suede artificial leather of the present invention comprises a three-dimensional entangled body comprising a superfine fiber having a fineness of 0.2 dtex or less and an elastomeric polymer A, and satisfies the requirements (1) to (4) as specified in the specification. By meeting the requirements, the suede artificial leather acquires excellent color fastness to light and color development in a wide range of colors and a high quality with good suede feeling, surface touch, hand, mechanical properties and color fastness.

Abstract: It is an object of the present invention to provide a polishing pad that is resistant to scratching and also has excellent flattening performance. One aspect of the present invention is a polishing pad, comprising a fiber-entangled body formed from fiber bundles made up of ultrafine fibers in which the average cross sectional area is between 0.01 and 30 ?m2, and a macromolecular elastomer, wherein part of the macromolecular elastomer is present inside the fiber bundles, whereby the ultrafine fibers are bundled, the number of fiber bundles per unit of surface area present in a cross section in the thickness direction is at least 600 bundles per square millimeter, and the volumetric ratio of a portion excluding voids is between 55 and 95%.

Abstract: A leather-like sheet composed of a microfine-fiber entangled body made of bundles of microfine fibers and an elastic polymer impregnated therein. The bundles of microfine fibers are composed of microfine monofibers having an average cross-sectional area of 0.1 to 30 ?m2 and have an average cross-sectional area of 40 to 400 ?m2. The bundles of microfine fibers exist in a density of 600 to 4000/mm2 on a cross section taken along the thickness direction of the microfine-fiber entangled body. The elastic polymer contains 30 to 100% by mass of a polymer of ethylenically unsaturated monomer. The polymer of ethylenically unsaturated monomer is composed of a soft component having a glass transition temperature (Tg) of less than ?5° C., a crosslinkable component, and optionally a hard component having a glass transition temperature (Tg) of higher than 50° C. and another component. The polymer of ethylenically unsaturated monomer is bonded to the microfine fibers in the bundles of microfine fibers.

Abstract: Provided are a leather-like sheet fabricated by infiltrating an aqueous resin dispersion (A) into a fibrous substrate, which satisfies a requirement (I) that the aqueous resin dispersion, (A) comprises essentially a main resin (a) stabilized with a surfactant, a polymer (b) having a polyoxyethylene group in its side chains, and a surfactant (c), a requirement (II) that the main resin (a) comprises an urethane resin (a1) and/or an urethane-acrylic composite resin (a2), and the resin skeleton contains from 1 to 10 mmols of a carboxyl group per 100 g of the resin, a requirement (III) that the polymer (b) is obtained through polymerization of a polyoxyethylene group-having ethylenic unsaturated monomer (b1) and any other ethylenic unsaturated monomer (b2) in a ratio by mass (b1)/(b2)=60/40 to 100/0, and a requirement (IV) that the percentage, % by mass (?) of the polyoxyethylene group in the polymer (b) and the number of mols (?) of the amino group per gram of the polymer (b) satisfy 35??+?×20000?60; and an indus

Abstract: The suede artificial leather of the present invention comprises a three-dimensional entangled body comprising a superfine fiber having a fineness of 0.2 dtex or less and an elastomeric polymer A, and satisfies the requirements (1) to (4) as specified in the specification. By meeting the requirements, the suede artificial leather acquires excellent color fastness to light and color development in a wide range of colors and a high quality with good suede feeling, surface touch, hand, mechanical properties and color fastness.

Abstract: Provided are a leather-like sheet fabricated by infiltrating an aqueous resin dispersion (A) into a fibrous substrate, which satisfies a requirement (I) that the aqueous resin dispersion, (A) comprises essentially a main resin (a) stabilized with a surfactant, a polymer (b) having a polyoxyethylene group in its side chains, and a surfactant (c), a requirement (II) that the main resin (a) comprises an urethane resin (a1) and/or an urethane-acrylic composite resin (a2), and the resin skeleton contains from 1 to 10 mmols of a carboxyl group per 100 g of the resin, a requirement (III) that the polymer (b) is obtained through polymerization of a polyoxyethylene group-having ethylenic unsaturated monomer (b1) and any other ethylenic unsaturated monomer (b2) in a ratio by mass (b1)/(b2)=60/40 to 100/0, and a requirement (IV) that the percentage, % by mass (&agr;) of the polyoxyethylene group in the polymer (b) and the number of mols (&bgr;) of the amino group per gram of the polymer (b) satisfy 35≦&agr;&pl

Abstract: This invention relates to a tube insertion machine, and more particularly to a machine which efficiently inserts heat exchange tubes into holes in opposed end plates and middle plates of shell and tube type heat exchangers.