Zeon Corporation

Kawasaki, Japan

Zeon Corporation

Kawasaki, Japan

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An identification medium including a metal foil and a cholesteric resin layer fragmentally disposed on the metal foil. In the identification medium, chromaticity coordinates (x1, y1) in an xy chromaticity diagram of the metal foil and chromaticity coordinates (x2, y2) in an xy chromaticity diagram of the cholesteric resin layer satisfy:


Patent
Zeon Corporation | Date: 2017-05-03

A method of production of a conjugated diene rubber comprising a step of polymerizing isoprene or a monomer mixture containing isoprene and an aromatic vinyl monomer in an inert solvent by using a polymerization initiator so as to form a polymer block (A) having an active end, a step of mixing the polymer block (A) having an active end and 1,3-butadiene or a monomer mixture containing 1,3-butadiene and an aromatic vinyl monomer to continue a polymerization reaction so as to obtain a conjugated diene polymer chain having an active end and containing a polymer block (A) and a polymer block (B), and a step of reacting a compound represented by the following general formula (1) with the active end of the conjugated diene polymer chain having an active end:^(1) represents a functional group selected from a hydrocarbyloxy group, halogen group, and hydroxyl group, R^(1) represents a substituted or unsubstituted hydrocarbon group, each of R^(2) and R^(3) independently represents a substituted or unsubstituted hydrocarbon group, R^(2) and R^(3) may bond with each other to form a ring structure together with the nitrogen atom represented by N in the general formula (1), and, when forming the ring structure, R^(2) and R^(3) may form a ring structure together with a hetero atom other than the nitrogen atom represented by the N in addition to the nitrogen atom represented by the N, r is an integer of 0 to 2.


Patent
Zeon Corporation and Honda Corporation | Date: 2017-05-10

An acrylic rubber contains (a) methyl methacrylate units, (b) ethyl acrylate units, (c) n-butyl acrylate units, (d) 2-methoxyethyl acrylate units, and (e) cross-linking site monomer units, in which the acrylic rubber contains 10 to 20% by weight of (a) the methyl methacrylate units, 15% by weight or less of (b) the ethyl acrylate units, 60 to 80% by weight of (c) the n-butyl acrylate units, 10 to 30% by weight of (d) the 2-methoxyethyl acrylate units, and 0.5 to 5% by weight of (e) the cross-linking site monomer units.


Patent
Zeon Corporation | Date: 2017-05-03

A cross-linked rubber for a liquefied gas seal obtained by cross-linking a highly saturated nitrile rubber composition comprising a carboxyl group-containing highly saturated nitrile rubber (A1) containing 15 to 60 wt% of ,-ethylenically unsaturated nitrile monomer units and 1 to 60 wt% of ,-ethylenically unsaturated dicarboxylic acid monoester monomer units and having an iodine value of 120 or less, a highly saturated nitrile rubber (A2) containing ,-ethylenically unsaturated nitrile monomer units in 15 to 60 wt%, having a content of ,-ethylenically unsaturated dicarboxylic acid monoester monomer units of 0.9 wt% or less, and having an iodine value of 120 or less, a polyamide resin (B) having a melting point of 150C or more, and a cross-linking agent (C), wherein, in the highly saturated nitrile rubber composition, a weight ratio of carboxyl group-containing highly saturated nitrile rubber (A1):highly saturated nitrile rubber (A2) is 5:95 to 95:5 in range, a weight ratio of total of carboxyl group-containing highly saturated nitrile rubber (A1) and highly saturated nitrile rubber (A2):polyamide resin (B) is 95:5 to 50:50, and a storage elastic modulus E of the cross-linked rubber at 150C is 5 MPa or more is provided.


Patent
Zeon Corporation and Daikin Industries Ltd | Date: 2017-05-10

The present invention aims to provide a laminate including a fluororubber layer and an acrylic rubber layer which are firmly bonded to each other and are not separated even at high temperatures. The laminate of the present invention includes a fluororubber layer and an acrylic rubber layer. The fluororubber layer is formed from a fluororubber composition containing a fluororubber that contains a polyol-crosslinkable vinylidene fluoride unit, a polyol crosslinker, and a crosslinking accelerator. The crosslinking accelerator is a quaternary phosphonium salt free from a chlorine atom. The fluororubber has an acid value of 0.20 KOHmg/g or higher.


Provided is a viscous dispersion liquid useful for forming a semiconductor porous film (porous semiconductor layer) by low-temperature deposition. The viscous dispersion liquid contains water as a dispersion medium, and titanium dioxide nanoparticles, wherein the viscous dispersion liquid has a solid content concentration of 30% by mass to 60% by mass, the titanium dioxide nanoparticles include anatase crystalline titanium dioxide nanoparticles having an average particle diameter of 10 nm to 100 nm, and brookite crystalline titanium dioxide nanoparticles having an average particle diameter of 5 nm to 15 nm, and the viscous dispersion liquid has a viscosity of 10 Pas to 500 Pas at 25C.


Patent
Zeon Corporation | Date: 2017-05-17

Provided is a laminated glass including, in order: a first glass sheet; a first interlayer film; a transparent film laminated with a heat reflection film; a second interlayer film; and a second glass sheet, wherein the first interlayer film and the second interlayer film are formed of a modified hydrogenated block copolymer [E], the modified hydrogenated block copolymer [E] is a hydrogenated block copolymer [D] in which an alkoxysilyl group is incorporated, the hydrogenated block copolymer [D] being a block copolymer [C] in which 90% or more of all unsaturated bonds is hydrogenated, the block copolymer [C] is composed of at least two polymer blocks [A] including a repeat unit derived from an aromatic vinyl compound, and at least one polymer block [B] including a repeat unit derived from a linear conjugated diene compound, and the ratio of weight fraction [A] : [B] is 30:70 to 60:40.


A cross-linkable nitrile rubber composition comprising a highly saturated nitrile rubber (A) containing ,-ethylenically unsaturated nitrile monomer units in a ratio of 10 to 60 wt% and having an iodine value of 120 or less, a master batch (B) containing an ethylene-vinyl acetate copolymer (b1) having a melt flow rate measured under a load of 21.18N at 190C of 0.5 to 1000 g/10 min. and containing vinyl acetate monomer units in a ratio of 5 to 50 wt% and an organic staple fiber (b2) having an average fiber length of 0.1 to 12 mm, and a cross-linking agent (C), wherein a ratio of the ethylene-vinyl acetate copolymer (b1) and the organic staple fiber (b2) in the master batch (B) is, in terms of a weight ratio of ethylene-vinyl acetate copolymer (b1) :organic staple fiber (b2), 30:70 to 80:20 is provided.


A highly saturated nitrile rubber composition obtained by mixing 7 to 40 wt% of a carboxyl group-containing highly saturated nitrile rubber (A1) containing 15 to 60 wt% of ,-ethylenically unsaturated nitrile monomer units and 1 to 60 wt% of ,-ethylenically unsaturated dicarboxylic acid monoester monomer units and having an iodine value of 120 or less, 10 to 78 wt% of a highly saturated nitrile rubber (A2) containing ,-ethylenically unsaturated nitrile monomer units in 15 to 60 wt%, having a content of ,-ethylenically unsaturated dicarboxylic acid monoester monomer units of 0.9 wt% or less, and having an iodine value of 120 or less, and 15 to 50 wt% of a polyester resin (B) at a temperature of a melting point of the polyester resin (B) or more is provided.


Patent
Toyama Prefecture, Kyoritsu Chemical & Co. and Zeon Corporation | Date: 2017-03-31

An imprint template is used for photocuring imprinting, and includes a support plate that is transparent with respect to an exposure wavelength used for photocuring imprinting, and has flexibility; a buffer resin layer that is formed on the support plate, and is formed of an elastic material that is transparent with respect to the exposure wavelength; and a resin film mold that is removably bonded to the buffer resin layer, and is transparent with respect to the exposure wavelength, wherein a concave-convex transfer pattern is formed on a surface of the resin film mold.

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