Abstract: The kneading apparatus 1 includes a casing 2, a pair of elongated screws 4a, 4b rotatably provided in the casing 2. The screws 4a, 4b are arranged parallel and horizontally with respect to one another. The casing 2 has a main body 20 and a screw container 3 provided in the casing 2. The screw container 3 defines a kneading section 30 therein. The screw 4a includes a screw axis 41 having an outer periphery, a first screw member 42 provided on the outer periphery of the screw axis 41 and a kneading member 43 provided on the outer periphery of the screw axis 41. The first screw member 42 and kneading member 43 are provided in the kneading section 30. The screw 4a, the first screw member 42 and the kneading member 43 respectively have core portions 411, 412, 413 having a surface and outer layers 45 respectively provided on the surfaces of the core portions 411, 412, 413. The screw container 3 and the outer layers 45 are constituted of a nonmetallic material.

Abstract: A back-plate composition of the present invention is a composition for forming a back plate of a brake pad, the brake pad having a friction material and the back plate bonded to the friction material. The back-plate composition includes a resin, a plurality of first fibers and a plurality of second fibers having an average length shorter than an average length of the first fibers. In the case where the average length of the first fibers is “L1” [?m] and the average length of the second fibers is “L2” [?m], “L2”/“L1” is in the range of 0.001 to 0.5. This makes it possible to provide a back-plate composition having excellent moldability, as well as a back plate formed of the back-plate composition, a brake pad including the back-plate and a caliper device provided with the brake pad.

Abstract: A back-plate composition of the present invention is a composition for forming a back plate of a brake pad, the brake pad having a friction material and the back plate bonded to the friction material. The back-plate composition includes a resin, a plurality of first fibers and a plurality of second fibers having an average length shorter than an average length of the first fibers. In the case where the average length of the first fibers is “L1” [?m] and the average length of the second fibers is “L2” [?m], “L2”/“L1” is in the range of 0.001 to 0.5. This makes it possible to provide a back-plate composition having excellent moldability, as well as a back plate formed of the back-plate composition, a brake pad including the back-plate and a caliper device provided with the brake pad.

Abstract: A silicone rubber-based hardening composition includes a linear organopolysiloxane having a vinyl group (A), an organohydrogen polysiloxane (B), and a silica filler (C) of which surface is treated with a silane coupling agent having a trimethylsilyl group. The linear organopolysiloxane having a vinyl group (A) includes a first linear organopolysiloxane having a vinyl group (A1), and a second linear organopolysiloxane having a vinyl group (A2).

Abstract: A pulverizing apparatus for pulverizing a hard resin composition has a pulverizing mechanism having a pair of rollers arranged parallel to one another, these rollers pulverizing the hard resin composition by pressuring the hard resin composition between the rollers and a cooling device for cooling the hard resin composition during the hard resin composition being pulverized. Each of the rollers has a cylindrical shape with a hollow portion and the cooling device is configured to supply a coolant into the hollow portion of each of the rollers. The coolant flows in the hollow portion of each of the rollers in a longitudinal direction of each of the rollers. The cooling device has facilitating members respectively inserted into the hollow portions of the rollers.

Abstract: In an aspect, the present disclosure relates to a polyamide solution comprising an aromatic polyamide and a solvent, wherein a Young's modulus of at least one direction of a cast film produced by casting the polyamide solution on a glass plate is 3.0 GPa or more, and a tensile strength of the cast film is 100 MPa or more and 250 MPa or less. In another aspect, the present disclosure relates to a polyamide solution comprising an aromatic polyamide and a solvent, wherein a Young's modulus of at least one direction of a cast film produced by casting the polyamide solution on a glass plate is 3.0 GPa or more, and an aromatic polyamide of the polyamide solution has a constitutional unit represented by following general formulae (I) and (II).

Abstract: The present invention provides a method for preparing a sample characterized by binding a substance A containing a hydrazide group to a sugar chain and/or a sugar derivative via hydrazone formation between the hydrazide group of the substance A and the reducing end of the sugar chain and/or the sugar derivative thereby to enable the separation and purification of the sugar chain and/or the sugar derivative for an analytical sample from a biological sample containing the sugar chain and/or the sugar derivative by a simple operation.

Abstract: A cover member includes a base material having a film shape and containing an amorphous aromatic polyamide. Further, it is preferred that the aromatic polyamide contains a carboxyl group. Furthermore, it is preferred that the aromatic polyamide contains a rigid structure in an amount of 85 mol % or more. Moreover, it is preferred that a tensile elastic modulus of the base material is 4 GPa or more. This makes it possible to provide a cover member having a good flatness keeping property and excellent long-term durability, and an electronic device provided with such a cover member and having excellent reliability.

Abstract: In one or a plurality of embodiments, a process for manufacturing polyamide without using PrO (propylene oxide) in synthesis is provided. In one or a plurality of embodiments, provided is a process for manufacturing polyamide, including steps (a) to (c): (a) reacting diacid dichloride monomer with at least two kinds of diamine monomers in a solvent so as to generate polyamide; and (b) removing hydrochloric acid physically out of a reaction system, the hydrochloric acid being generated during the reaction in the step (a); or (c) adding a trapping reagent capable of trapping hydrochloric acid, at any time at least before the step (a), at the same time of starting the step (a), or during the step (a), wherein at least one of the diamine monomers is a diamine monomer containing a carboxyl group, and the trapping reagent does not include propylene oxide.

Abstract: The present disclosure, in one aspect, relates to a polyamide solution which can suppress the yellowness. The present disclosure, in one or a plurality of embodiments, relates to a polyamide solution comprising an aromatic polyamide and a solvent, the aromatic polyamide comprising a constitutional unit having one or more free carboxyl groups and having an aromatic ring structure and an alicyclic structure in the main chain. Further, the present disclosure, in one aspect, relates to a laminated composite material, comprising a glass plate and a polyamide resin layer; the polyamide resin layer laminated onto one surface of the glass plate, the polyamide resin layer having yellowness (JIS K7373) of 2.4 or less; and the polyamide resin layer obtained by applying the solution onto the glass plate.

Abstract: The injection material 100 contains particles 2 adapted to be packed into the fracture, a resin composition and a fluid 20 for transferring the particles 2 and the resin composition into the fracture. Further, the resin composition is used for forming a surface layer covering at least a part of an outer layer of each of the particles 2. The resin composition contains an acid-curing agent and an acid-curing resin which can cure in the presence of an acid. The acid-curing agent has an acid group which is present in a state that the acid group is blocked by a compound having reactivity with respect to the acid group. The resin composition can reliably cure the acid-curing resin at a target location, the injection material containing the resin composition and the particles and a packing method for packing the particles into the fracture formed in the subterranean formation.

Abstract: In one or a plurality of embodiments, a process for manufacturing polyamide, with a reduced use of an amide-based solvent in synthesis, is provided. In one or a plurality of embodiments, provided is a process for manufacturing polyamide, including steps (1) to (3): (1) dissolving diamine in a non-amide-based organic solvent or a non-amide-based organic solvent containing 10 mass% or less of an amide-based organic solvent; (2) adding diacid dichloride to a solution obtained in the step (1) and reacting the diamine with the diacid dichloride so as to generate polyamide; and (3) adding a trapping reagent capable of trapping hydrochloric acid.

Abstract: In one or a plurality of embodiments, a process for manufacturing polyamide, with a reduced use of an amide-based solvent in synthesis, is provided. In one or a plurality of embodiments, provided is a process for manufacturing polyamide, including steps (a) to (c): (a) dissolving diacid dichloride in a non-amide-based organic solvent; (b) adding diamine to a solution obtained in the step (a) and reacting the diacid dichloride with the diamine so as to generate polyamide; and (c) adding a trapping reagent capable of trapping hydrochloric acid, at any time at least before the step (b), at the same time of starting the step (b), or during the step (b).

Abstract: A silicone rubber-based hardening composition includes a linear organopolysiloxane having a vinyl group (A), an organohydrogen polysiloxane (B), and a silica filler (C) of which surface is treated with a silane coupling agent having a trimethylsilyl group. The linear organopolysiloxane having a vinyl group (A) includes a first linear organopolysiloxane having a vinyl group (A1), and a second linear organopolysiloxane having a vinyl group (A2).

Abstract: An optical waveguide has: a core layer which includes at least one core portion for transmitting a light signal and at least two side cladding portions respectively provided at lateral sides of the core portion so as to be opposed to each other; and two cladding layers respectively provided at vertical sides of the core layer. The core layer is configured to have a horizontal refractive index distribution curve W in a width direction of a cross-sectional plane of the core layer. The horizontal refractive index distribution curve W has a region including at least two local minimum values, at least one first local maximum value and at least two second local maximum values smaller than the first local maximum value. A refractive index in whole of the horizontal refractive index distribution curve W continuously varies.

Abstract: A brake pad 10 can brake a rotation of a disc 200. The brake pad 10 includes a friction material 12 provided on the side of the disc 200 and a back plate 11 bonded to the friction material 12 on the opposite side of the disc 200. A thickness of a central region of the back plate 11 in a rotational direction of the disc 200 is larger than thicknesses of both end regions of the back plate 11 in the rotational direction of the disc. In the case where a minimum value of the thicknesses of the end regions of the back plate 11 is defined as “h1 [mm]” and a maximum value of the thickness of the central region of the back plate 11 is defined as “h2 [mm]”, h1 and h2 preferably satisfy a relationship of “h2?h1<3”.

Abstract: A pervaporation membrane having superior durability and a phenol concentrating method which can efficiently concentrate phenols with the pervaporation membrane are provided. A pervaporation separation apparatus 100 includes a treatment target liquid tank 110, a pervaporation membrane module 120, a permeated material recovering tank 130 and a non-permeated material storage tank 140. The pervaporation membrane module 120 includes a pervaporation membrane 1 having a porous support body and an enveloping layer formed of a polyamide-containing resin. The phenol concentrating method of the present invention includes a pretreatment process for pretreating phenol aqueous solution stored in the treatment target liquid tank 110, a pervaporation process for treating the phenol aqueous solution in the pervaporation membrane module 120 with a pervaporation method and a condensation process for condensing a permeated material permeating across the pervaporation membrane 1 to obtain concentrated phenol aqueous solution.

Abstract: The brake pad 10 includes a friction material 12 provided on the side of the disc 200 and a back plate 11 bonded to the friction material on the opposite side of the disc 200. A thickness of a peripheral region of the back plate on the side of a center of the disc is larger than a thickness of a peripheral region of the back plate on the side of an outer circumference of the disc. In the case where a minimum value of the thickness of the peripheral region of the back plate on the side of the center of the disc is defined as “h2 [mm]” and a maximum value of the thickness of the peripheral region of the back plate 11 on the side of the outer circumference of the disc is defined as “h1 [mm]”, h1 and h2 satisfy a relationship of “h2?h1<3”.

Abstract: A brake pad 10 can control rotating of a disc 200. The brake pad 10 includes a friction material 12 provided on a side of the disc and a back plate 11 bonded to the friction material on an opposite side of the disc 200. The back plate has a plurality of ridges 111 and/or a plurality of grooves 112 each formed on an entirety of a surface of the back plate on the side of the friction material so that longitudinal directions of the ridges and/or the grooves are inclined all together with respect to a rotational direction of the disc at a predetermined angle. The friction material is bonded to the back plate so as to make close contact with a surface defining each ridge and/or each groove and the surface of the back plate on the side of the friction material.

Abstract: This disclosure, viewed from one aspect, relates to a method for producing a sensor element, including the following steps (A) and (B): (A) applying a polyamide solution onto a base to form a polyamide film on the base; and (B) forming a sensor element on the surface of the polyamide film, wherein the base or the surface of the base is composed of glass or silicon wafer, wherein a polyamide of the polyamide solution has a constitutional unit represented by the following general formulae (I) and (II):