Patents Assigned to Shin-Nakamura Chemical Co., Ltd.
-
Patent number: 11667769Abstract: Provided are a composite for cellulose fiber dispersion that can inexpensively and sufficiently disperse cellulose fibers, particularly nanocellulose, in a hydrophobic resin and a cellulose fiber composition containing the composite. A composite for cellulose fiber dispersion according to the present invention has a structure in which a vinyl polymer is grafted to a cellulose derivative. A cellulose fiber composition according to the present invention contains the composite and cellulose fibers and more specifically also contains an organic solvent, a resin precursor, or a resin.Type: GrantFiled: September 14, 2021Date of Patent: June 6, 2023Assignee: SHIN-NAKAMURA CHEMICAL CO., LTD.Inventors: Ryojiro Akashi, Takuro Nishimoto, Toshikazu Saeki
-
Publication number: 20210403683Abstract: Provided are a composite for cellulose fiber dispersion that can inexpensively and sufficiently disperse cellulose fibers, particularly nanocellulose, in a hydrophobic resin and a cellulose fiber composition containing the composite. A composite for cellulose fiber dispersion according to the present invention has a structure in which a vinyl polymer is grafted to a cellulose derivative. A cellulose fiber composition according to the present invention contains the composite and cellulose fibers and more specifically also contains an organic solvent, a resin precursor, or a resin.Type: ApplicationFiled: September 14, 2021Publication date: December 30, 2021Applicant: SHIN-NAKAMURA CHEMICAL CO., LTD.Inventors: Ryojiro AKASHI, Takuro NISHIMOTO, Toshikazu SAEKI
-
Patent number: 11149132Abstract: Provided are a composite for cellulose fiber dispersion that can inexpensively and sufficiently disperse cellulose fibers, particularly nanocellulose, in a hydrophobic resin and a cellulose fiber composition containing the composite. A composite for cellulose fiber dispersion according to the present invention has a structure in which a vinyl polymer is grafted to a cellulose derivative. A cellulose fiber composition according to the present invention contains the composite and cellulose fibers and more specifically also contains an organic solvent, a resin precursor, or a resin.Type: GrantFiled: June 5, 2019Date of Patent: October 19, 2021Assignee: SHIN-NAKAMURA CHEMICAL CO., LTD.Inventors: Ryojiro Akashi, Takuro Nishimoto, Toshikazu Saeki
-
Publication number: 20210087364Abstract: Provided are a composite for cellulose fiber dispersion that can inexpensively and sufficiently disperse cellulose fibers, particularly nanocellulose, in a hydrophobic resin and a cellulose fiber composition containing the composite. A composite for cellulose fiber dispersion according to the present invention has a structure in which a vinyl polymer is grafted to a cellulose derivative. A cellulose fiber composition according to the present invention contains the composite and cellulose fibers and more specifically also contains an organic solvent, a resin precursor, or a resin.Type: ApplicationFiled: June 5, 2019Publication date: March 25, 2021Applicant: SHIN-NAKAMURA CHEMICAL CO., LTD.Inventors: Ryojiro AKASHI, Takuro NISHIMOTO, Toshikazu SAEKI
-
Patent number: 7022257Abstract: A floor coating composition containing one or more unsaturated urethane compounds, which is(are) obtained from an isocyanate compound(s) and a hydroxyl compound(s) as starting materials, wherein at least one of the isocyanate compound(s) and the hydroxyl compound(s) has an unsaturated bond(s), wherein the poly(alkyleneoxy) group content (as defined in the specification) is 2–16 wt % and the proportion of the number of the unsaturated bonds (as defined in the specification) is not less than 6, can form a coating film superior in staining resistance against extremely powerful staining substances and gloss retentivity against extremely great load from walking, and which permits easy polishing away of damages and color stain, as well as use of water as a solvent. When a coating object is covered with a film made from the composition, a coated material can be obtained, wherein warpage of a coating object (floor, floor material, plastic film and the like) and cracks in the film are suppressed.Type: GrantFiled: October 11, 2000Date of Patent: April 4, 2006Assignees: Shin-Nakamura Chemical Co., Ltd., GEN Maintenance Technology Inc.Inventors: Masaji Ohkido, Yoji Tominaga, Ryo Imami
-
Patent number: 6576451Abstract: An oligomer is provided having a polyalkylene glycol main structure, a polymeric double bond group arranged at both ends of the main structure, and a sub-structure arranged between the main structure and each polymeric double bond group. The sub-structures lengthen the main structure, and are composed of a urethane bond and an ethyleneoxy, or a urethane bond, an ethyleneoxy and a propyleneoxy. The introduction of urethane bonds causes crystallization (network formation) with the urethane bonds themselves so that a hydrous gel resulting from polymerizing the oligomer has increased flexibility, strength and erosion resistance. As a result, even though the main structure is lengthened to increase capacity to entrap microorganisms, the strength of the hydrous gel is not reduced. The ethyleneoxy weakens hydrophobicity of urethane regions to improve affinity of the gel for microorganisms. Microorganisms can adhere to and grow on the surface of a hydrous gel produced by polymerizing the oligomer.Type: GrantFiled: August 25, 2000Date of Patent: June 10, 2003Assignees: Hitachi Plant Engineering & Construction Co., Ltd., Shin-Nakamura Chemical Co., Ltd.Inventors: Tatsuo Sumino, Naomichi Mori, Tamio Igarashi, Hiroyoshi Emori, Minoru Kayanoki, Takayuki Nakamura, Ryuichi Matsuyama, Tsutomu Minaki
-
Patent number: 6413698Abstract: A photohardenable resin composition comprising (A) a urethanated acrylic compound represented by formula (I): (A)a—C—(R)4−a wherein R is H or alkyl; a is 3 or 4; and A represents a group of formula (II): wherein D represents —CH2CH2O—, —CH2CH(CH3)O—, —CH2CH2COO— or —(CH2)6COO—; E represents —CH2CH2O—, —CH2CH(CH3)O—, —COCH2CH2O— or —CO(CH2)6O—; G represents a diol or triol residual group; J represents a divalent or trivalent and substituted or unsubstituted hydrocarbon group; L represents —(CH2CH2O)h— (h: integer of 1 to 4), —(CH2CH(CH3)O)j— (j: integer of 1 to 4), or —(CH2CH2O)k—(CH2CH(CH3)O)m— (k, m: integer of 1 to 3 (k+m=2, 3 or 4); b, c, and d are each 0 or 1 (b+c+d=1, 2 or 3); e is 0, 1 or 2; f is 0 or 1 (e+f=1 or 2); and g is 1 or 2, and (B) a radical polymerizable compound at a (A) : (B) rType: GrantFiled: January 6, 2000Date of Patent: July 2, 2002Assignees: Teijin Seiki Co., Ltd., Takemoto Yushi Kabushiki Kaisha, Shin-Nakamura Chemical Co., Ltd.Inventors: Yorikazu Tamura, Tsuneo Hagiwara, Makoto Ohtake, Minoru Shinoda, Toshiharu Suzuki, Tatsuhiko Ozaki, Yasushi Ishihama, Takayuki Nakamura