Patents Assigned to Nippon Paper Industries Co., LTD
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Patent number: 11511557Abstract: An inkjet recording medium, comprising an ink-receiving layer containing an inorganic pigment, a binder, an inkjet ink-fixing agent comprising a cationic compound, and organic spherical particles disposed on at least one surface of a base paper, wherein the ink-receiving layer further contains a water-soluble metal salt and 5 parts by weight or more to 15 parts by weight or less of polyvinyl alcohol (A) with a polymerization degree of 700 or less and 20 parts by weight or more to 40 parts by weight or less of polyvinyl alcohol (B) with a polymerization degree of 1200 or more as the binder with respect to 100 parts by weight of the ink-receiving layer; and a volume 50% average particle diameter (D50) as measured by a laser diffraction/scattering method of the organic spherical particles is 15.0 ?m or more.Type: GrantFiled: August 31, 2018Date of Patent: November 29, 2022Assignee: Nippon Paper Industries Co., Ltd.Inventors: Koji Kutsuwa, Tadashi Yoshida, Kentaro Kawasaki
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Patent number: 11512432Abstract: Provided is an oxidized microfibrillated cellulose fiber having a Canada standard freeness of not less than 200 mL and an average fiber diameter of not less than 500 nm. Said fiber enhances paper strength when added to a paper.Type: GrantFiled: March 28, 2019Date of Patent: November 29, 2022Assignee: NIPPON PAPER INDUSTRIES CO., LTD.Inventors: Masato Takayama, Yoshihiro Aoki, Takanori Otsuhata, Takeo Izumiya, Hiroyuki Okumura, Tomonori Kawamata, Ryo Sotooka
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Patent number: 11504952Abstract: An object is to provide a barrier material which not only is high in degree of biomass and small in amount of CO2 emitted, but also has biodegradability and simultaneously has excellent gas barrier property and water vapor barrier property, and which can be suitably used particularly in packaging applications for foods or the like, such as a packaging material, a bag, a paper container, a cardboard box, and a cup. A solution to be provided is a barrier material having an oxygen permeability of 10 ml/m2·day·atm or less at a temperature of 23° C. and a relative humidity of 0%, and having a total degree of biomass of 50% or more.Type: GrantFiled: October 3, 2018Date of Patent: November 22, 2022Assignee: NIPPON PAPER INDUSTRIES CO., LTD.Inventors: Takaharu Noda, Masaaki Fukunaga
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Patent number: 11466100Abstract: The present invention provides a novel method for producing carboxymethylated cellulose, the method making it possible to economically obtain a high-transparency cellulose nanofiber dispersion. In the carboxymethylation of cellulose, mercerization is carried out in a solvent comprising mainly water, and then carboxymethylation is carried out in a mixed solvent of water and an organic solvent. A nanofiber dispersion of high-transparency carboxymethylated cellulose can be obtained by defibrating the resulting carboxymethylated cellulose.Type: GrantFiled: December 5, 2018Date of Patent: October 11, 2022Assignee: NIPPON PAPER INDUSTRIES CO., LTD.Inventors: Kazuhiko Inoue, Takeshi Nakatani, Yusuke Tada
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Patent number: 11466405Abstract: Provided is a CM-modified microfibrillated cellulose fiber having a Canada standard freeness of not less than 200 mL and an average fiber diameter of not less than 500 nm. Said fiber enhances paper strength when added to a paper.Type: GrantFiled: March 28, 2019Date of Patent: October 11, 2022Assignee: NIPPON PAPER INDUSTRIES CO., LTD.Inventors: Masato Takayama, Yoshihiro Aoki, Takanori Otsuhata, Takeo Izumiya, Hiroyuki Okumura, Tomonori Kawamata, Ryo Sotooka
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Patent number: 11453728Abstract: Provided is a carboxymethylated microfibrillated cellulose fiber having a Canada standard freeness of less than 200 mL and an average fiber diameter of not less than 500 nm. Said fiber provides a composition having excellent water retention ability.Type: GrantFiled: March 28, 2019Date of Patent: September 27, 2022Assignee: NIPPON PAPER INDUSTRIES CO., LTD.Inventors: Masato Takayama, Yoshihiro Aoki, Takanori Otsuhata, Takeo Izumiya, Hiroyuki Okumura, Tomonori Kawamata, Ryo Sotooka
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Patent number: 11447912Abstract: The present invention aims to provide complex fibers of a cellulose fiber with inorganic particles exhibiting better drainage and retention when they are used as materials for forming sheets. In the complexes of the present invention, (1) the weight ratio B/A between the inorganic content (B) in the residue remaining on a 60-mesh sieve (having an opening of 250 ?m) after an aqueous suspension of a complex fiber having a solids content of 0.1% is filtered through the sieve and the inorganic content (A) in the complex fiber before treatment is 0.3 or more; or (2) the weight ratio C/A between the inorganic content (C) in fractions corresponding to an effluent volume (L) of 16.00 to 18.50 and an elution time (sec) of 10.6 to 37.3 and the inorganic content (A) in the complex fiber before treatment is 0.3 or more when an aqueous suspension of the complex fiber having a solids content of 0.3% is classified using a fiber classification analyzer under the conditions of a flow rate of 5.Type: GrantFiled: April 19, 2019Date of Patent: September 20, 2022Assignee: NIPPON PAPER INDUSTRIES CO., LTD.Inventors: Ayaka Hasegawa, Moe Fuchise, Masatoshi Oishi, Koji Ninagawa, Toru Nakatani
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Publication number: 20220282019Abstract: The present invention has an object to provide a modified polyolefin resin capable of forming a coating film that is excellent in water-resistant adhesiveness under a high temperature condition. The present invention provides a modified polyolefin resin including a graft-modified product in which a component (A) that is a polyolefin resin is graft-modified with a component (B) that is an ?, ?-unsaturated carboxylic acid or a derivative thereof, and having a tensile modulus of 250 MPa or higher, and a weight-average molecular weight of 70,000 or more and less than 200,000.Type: ApplicationFiled: August 24, 2020Publication date: September 8, 2022Applicant: NIPPON PAPER INDUSTRIES CO., LTD.Inventors: Ryo KOIKE, Fumiyasu SAKAKIBARA, Shunji SEKIGUCHI, Ryuji DOI
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Publication number: 20220259411Abstract: Cellulose fibers modified with a compound derived from urea or a derivative thereof, and acid-modified polypropylene, and the acid-modified polypropylene are contained, and the following conditions (A) and (B) are satisfied. (A) When temperature is increased at 10° C. per minute under a nitrogen atmosphere, a weight loss of the master batch during temperature increase from 105° C. to 300° C. is 10 to 40%, and a weight loss of the master batch during temperature increase from 390° C. to 880° C. is 5 to 45%, based on an absolute dry weight of the master batch. (B) The following relationship is satisfied: b/a>0.05 where a is a maximum peak intensity in a closed interval [1,315 cm?1, 1,316 cm?1], and b is a maximum peak intensity in an open interval (750 cm?1, 800 cm?1) in an infrared absorption spectrum of the master batch.Type: ApplicationFiled: December 3, 2020Publication date: August 18, 2022Applicant: NIPPON PAPER INDUSTRIES CO., LTD.Inventors: Yujiroh FUKUDA, Io KAKUTA
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Publication number: 20220243044Abstract: A method for producing a resin composition including a first kneading step for loading acetylated cellulose fibers having a weighted average fiber length of 0.20 mm to 1.50 mm, a compatibilized resin, and urea in a kneading machine and kneading the same.Type: ApplicationFiled: July 30, 2020Publication date: August 4, 2022Applicant: NIPPON PAPER INDUSTRIES CO., LTD.Inventors: Yujiroh FUKUDA, Io KAKUTA
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Publication number: 20220227998Abstract: This mixed suspension contains (1) a dispersant, (2) a cellulose nanofiber, and (3) a filler.Type: ApplicationFiled: June 17, 2020Publication date: July 21, 2022Applicant: NIPPON PAPER INDUSTRIES CO., LTD.Inventors: Takeshi NAKAYAMA, Makoto MATSUMOTO, Shinji SATO
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Publication number: 20220227971Abstract: A method for producing a first kneading step in which cellulose fibers having a weighted-average fiber length of 0.20 mm to 1.50 mm, a compatibilizing resin, and urea are introduced into a kneader and kneaded.Type: ApplicationFiled: July 30, 2020Publication date: July 21, 2022Applicant: NIPPON PAPER INDUSTRIES CO., LTD.Inventors: Yujiroh FUKUDA, Io KAKUTA
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Patent number: 11390997Abstract: The present invention provides a titanium oxide composite fiber in which titanium oxide is efficiently fixed in fiber, and a method for producing the titanium oxide composite fiber. A composite fiber of the present invention includes: fiber; titanium oxide; and an inorganic binder, at least part of the inorganic binder containing at least one inorganic compound selected from (i) an inorganic salt containing at least one of: at least one metal selected from magnesium, barium, aluminum, copper, iron, and zinc; and silicic acid and (ii) metal particles containing the at least one metal, the titanium oxide being firmly fixed to the fiber via the inorganic binder.Type: GrantFiled: October 5, 2018Date of Patent: July 19, 2022Assignee: NIPPON PAPER INDUSTRIES CO., LTD.Inventors: Masatoshi Oishi, Koji Ninagawa, Toru Nakatani, Dai Nagahara, Shisei Goto
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Publication number: 20220195084Abstract: The present invention provides a modified polyolefin resin composition including a modified polyolefin resin (X) formed by modifying an acid-modified polyolefin resin (A) with a modification component comprising an alcohol (B), in which the modified polyolefin resin composition satisfies the following (I) to (III) and also provides applications of the modified polyolefin resin composition. (I) The resin (A) is a resin formed by modifying a polyolefin (a) with an ?,?-unsaturated carboxylic acid and a derivative (b) of the ?,?-unsaturated carboxylic acid having a structure (b1) derived from at least one carboxy group. (II) A residual ratio of the structure (b1) in the resin (X) is more than 0% to 50% or less. (III) A content of the alcohol in the composition is 1.0 mol to 5.0 mol relative to 1.0 mol of the structure (b1) that the resin (A) has.Type: ApplicationFiled: April 10, 2020Publication date: June 23, 2022Applicant: NIPPON PAPER INDUSTRIES CO., LTD.Inventors: Masaru KONO, Hitomi ABE, Minoru YADA, Naosuke KOMOTO
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Patent number: 11365040Abstract: A refillable container includes: an inner container having a suction port at a center of an upper surface portion and a bottom portion with a pyramid shape having a deepest portion at a center of the bottom portion; a support member configured to hold the bottom portion of the inner container to support the inner container in a standing state; a lid member fitted to an outer periphery of the inner container; a discharge pump on a top surface portion of the lid member, the discharge pump including a suction tube inserted through the suction port into the inner container; and a positioning device for positioning the inner container in a vertical direction such that a distal end of the suction tube is located in the pyramid shape of the bottom portion of the inner container.Type: GrantFiled: January 16, 2019Date of Patent: June 21, 2022Assignee: NIPPON PAPER INDUSTRIES CO., LTD.Inventors: Hideki Okude, Takaharu Noda
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Publication number: 20220186014Abstract: An object is to provide a dispersion resin composition which can maintain dispersion stability even if the added amount of an emulsifier is reduced. Provided is a dispersion resin composition including, at least: a modified polyolefin resin in which a modification component containing an ?,?-unsaturated carboxylic acid derivative with a ring structure has been introduced to a polyolefin resin; and an aqueous dispersion medium, wherein the modified polyolefin resin has a degree of ring opening, represented by the equation (1), of 70 or more: degree of ring opening=modification degree K×rate of ring opening R ??(1) (in the equation (1), the modification degree K represents a containing rate (% by weight) of the ?,?-unsaturated carboxylic acid derivative relative to the polyolefin resin, and the rate of ring opening R represents a rate of ring opening (%) of the ring structure in the ?,?-unsaturated carboxylic acid derivative).Type: ApplicationFiled: March 10, 2020Publication date: June 16, 2022Applicant: NIPPON PAPER INDUSTRIES CO., LTD.Inventors: Shunji SEKIGUCHI, Ryuji DOI, Fumiyasu SAKAKIBARA, Takao YOSHIMOTO, Ryo KOIKE
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Publication number: 20220185998Abstract: An object of the present invention is to provide a rubber composition that has tensile strength at break and tensile elongation superior to a rubber composition produced without mixing a cellulose nanofiber and to provide a latex immersion liquid that is a raw material for the rubber composition and is used at a latex immersion step. Namely, the present invention provides a latex immersion liquid that includes (1) a rubber latex, (2) a modified cellulose nanofiber having an average fiber length of 200-400 nm, and (3) a defoaming agent and also provides a rubber composition produced through a latex immersion step using the obtained latex immersion liquid.Type: ApplicationFiled: April 20, 2020Publication date: June 16, 2022Applicant: NIPPON PAPER INDUSTRIES CO., LTD.Inventors: Mei TAKAKI, Kotaro ITO, Hayato KATO
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Patent number: 11352482Abstract: An object of the present invention is to provide a rubber composition including a rubber component and cellulose-based fibers and having excellent strength. Namely, the present invention provides a rubber composition including Component (A): a modified cellulose nanofiber, Component (B): a surfactant, Component (C): a polyvalent metal, and Component (D): a rubber component and a method for producing the same. Component (A) preferably includes a carboxy group-containing cellulose nanofiber such as an oxidized cellulose nanofiber and a carboxymethylated cellulose nanofiber.Type: GrantFiled: February 7, 2018Date of Patent: June 7, 2022Assignee: NIPPON PAPER INDUSTRIES CO., LTD.Inventors: Masahiro Morita, Yusuke Yasukawa, Kotaro Ito
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Publication number: 20220161229Abstract: A problem to be solved by the present invention is to provide a new form of adsorbent suitable for a motor vehicle canister. An activated carbon fiber sheet satisfies one or two or more of conditions for indices, such as a specific surface area, a pore volume of pores having a given pore diameter, and a sheet density. An embodiment, for example, may have: a specific surface area ranging from 1400 to 2300 m2/g; a pore volume ranging from 0.20 to 0.70 cm3/g for pores having pore diameters of more than 0.7 nm and 2.0 nm or less; an abundance ratio R0.7/2.0, which is a ratio of a pore volume of micropores having pore diameters of 0.7 nm or less occupied in a pore volume of micropores having pore diameters of 2.0 nm or less, ranging from 5% to less than 25%, and a sheet density ranging from 0.030 to 0.200 g/cm3.Type: ApplicationFiled: February 8, 2022Publication date: May 26, 2022Applicant: NIPPON PAPER INDUSTRIES CO., LTD.Inventors: Daisuke IMAI, Yoshihide WATANABE, Yuu TAKATA, Shunsuke OZAWA, Chie YOSHIDA
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Publication number: 20220161182Abstract: An object is to provide a new form of adsorbent suitable for a high performance canister. An adsorbent including activated carbon is used as the adsorbent for the canister and satisfies the following conditions. P0.2/100 expressed by Equation 1: P0.2/100=X÷Y×100??(Equation 1) is 18% or more, in Equation 1, X represents an amount of adsorbed n-butane gas per 100 parts by weight of the adsorbent at 25° C. under an atmosphere where a gas pressure of n-butane gas is 0.2 kPa, and Y represents an amount of adsorbed n-butane gas per 100 parts by weight of the adsorbent at 25° C. under an atmosphere where a gas pressure of n-butane gas is 100 kPa.Type: ApplicationFiled: February 8, 2022Publication date: May 26, 2022Applicant: NIPPON PAPER INDUSTRIES CO., LTD.Inventors: Daisuke IMAI, Yoshihide WATANABE, Yuu TAKATA, Shunsuke OZAWA, Chie YOSHIDA