Sumitomo Bakelite

Tochigi, Japan

Sumitomo Bakelite

Tochigi, Japan
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A phenolic-resin molding material for a sliding member of the present invention includes a phenolic-resin, graphite, polytetrafluoroethylene, and spherical glass beads. In addition, a content of the phenolic-resin in the phenolic-resin molding material for a sliding member is 15% by weight or more and 50% by weight or less.


Patent
Sumitomo Bakelite | Date: 2017-01-04

A cell aggregate culture vessel (1) is a vessel for culturing a cell aggregate. The cell aggregate culture vessel (1) includes a well (21) having a culture space capable of storing the cell aggregate and culture fluid and a tubular body (3) which is disposed on the well on a plane at which the well has an opening and have an inner cavity communicating with the culture space, and one or more communication portion (3a) capable of discharging the culture fluid without allowing passage of the cell aggregate to the outside of the tubular body (3) is formed in a tubular wall of the tubular body (3). The communication portion (3a) may be, for example, a slit having a width of 0.1 mm or larger and 0.5 mm or smaller.


Patent
Sumitomo Bakelite | Date: 2017-01-18

A multilayer film of the present invention has a plurality of unit layers laminated together, and each unit layer includes a first layer containing a crystalline resin A with thermoplasticity, and a second layer containing a thermoplastic resin B different from the crystalline resin A. In the case where such a multilayer film is deformed in a thickness direction thereof to from a plurality of concave portions each having a size of inner diameter 10.0 mm x height 4.5 mm therein, a gas transmission rate of the multilayer film via the concave portions is 10.0 mg/day (40C90%RH) per 10 concave portions or less.


Patent
Sumitomo Bakelite | Date: 2017-04-18

An anti-leak valve unit (1) is removably attached to a base end portion (43) of an overtube (4) that includes an inner cavity (42) through which an endoscope is to be removably inserted, and that is to be inserted into a body cavity. The anti-leak valve unit (1) includes a frame portion (3) attached to an outer circumferential surface (44) of the base end portion (43) of the overtube (4), a fitting device (2) provided on the frame portion (3) so as to be removably engaged with the outer circumferential surface (44) of the base end portion (43), and a valve element (5) provided inside the frame portion (3). The valve element (5) includes an annular endoscope insertion port located at a generally central portion of the valve element (5) so as to be circumferentially fitted to the endoscope, and a flexible elastic portion provided around the endoscope insertion port.


Patent
Sumitomo Bakelite | Date: 2017-04-05

The phenolic resin composition of the present invention includes a novolac-type phenolic resin, a resorcinol resin, and a curing agent, and is of a solid form. The mixing ratio of the resorcinol resin is preferably more than or equal to 1 part by mass and less than or equal to 100 parts by mass with respect to 100 parts by mass of the novolac-type phenolic resin. The mixing ratio of the curing agent is preferably more than or equal to 5 parts by mass and less than or equal to 25 parts by mass with respect to 100 parts by mass of a total amount of the novolac-type phenolic resin and the resorcinol resin. The phenolic resin cured product is obtained by heat-curing the phenolic resin composition.


Patent
Sumitomo Bakelite and Promerus LLC | Date: 2017-01-11

There is provided a polymer including a structural unit represented by the following Formula (1a), a structural unit represented by the following Formula (1b) and a structural unit represented by the following Formula (1c)._(1), R_(2), R_(3) and R_(4) independently represents a hydrogen atom or an organic group having 1 to 10 carbon atoms. In Formula (1c), R_(5) represents an organic group having 1 to 10 carbon atoms.


A housing (10) of a compressor (1) according to the present embodiment includes at least one compression chamber (101) that compresses a gas aspirated into the inside thereof and is composed of a metal-resin composite (16) in which a resin member (14) composed of a thermosetting resin composition and a metal member (12) are bonded to each other. In a case where the metal-resin composite (16) is made into a test piece in which the resin member (14) having a thickness d_(1) and the metal member (12) having a thickness d_(2) are laminated on and bonded to each other and a ratio of d_(1)/d_(2) is 3, and the test piece is put in a first state where the test piece is disposed, the surface on the resin member (14)-exposed side up, on two supports with no stress applied thereto and a second state where a 1-point bending stress of 140 MPa is applied in a thickness direction to the center of the surface on the resin member (14) side such that the center caves in after the first state, when putting in the first and second states is alternately repeated 1,000,000 times at a frequency of 30 Hz under a temperature condition of 25C, the metal-resin composite exhibits bending fatigue resistance in which neither peeling nor fracture occurs.


A lignin derivative that is extracted from biomass and is used for rubber reinforcement or for use in a molding material is provided. Such a lignin derivative has a number average molecular weight of 300 to 2,000, and contains a component that is soluble in a polar organic solvent, in an amount of 80% by mass or more. When such a lignin derivative is incorporated, a lignin resin composition, a rubber composition, or a molding material, all of which have excellent low hysteresis loss characteristics, elastic modulus, or tensile properties, can be obtained. Furthermore, when a component that is thermofusible is used as the soluble component, a lignin resin composition, a rubber composition, or a molding material, all of which have superior aforementioned characteristics, can be obtained.


Patent
Sumitomo Bakelite | Date: 2017-01-13

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.


Patent
Sumitomo Bakelite | Date: 2017-04-12

The invention provides a medical device including a resin tube having excellent branch selectivity while excellent pushability in a curved body cavity or an extremely narrow body cavity such as a blood vessel terminal region is maintained. Provided is a medical device having a medical device body to be inserted into a body cavity. The medical device body has an elongated resin tube, the resin tube includes a first region including a distal end part and a second region including a proximal end part, and the first region is more flexible than the second region.

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