Patents Assigned to Toyo Polymer Co., Ltd.
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Patent number: 9163161Abstract: Provided is a polyurethane aqueous dispersion characterized in having practical utility in terms of processing suitability when a formed film is produced by salt coagulation method, and characterized in that a formed film obtained from the same has practical utility in terms of resistance against ethanol water.Type: GrantFiled: May 24, 2013Date of Patent: October 20, 2015Assignee: TOYO POLYMER CO., LTD.Inventors: Michiro Goto, Kenji Shimizu, Yoshio Seki, Tomoya Genmoto, Chie Ipponsugi, Naohito Higuchi
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Patent number: 8557005Abstract: The present invention provides a polyurethane foam, which, despite having a low specific gravity, has a hardness and an elasticity favorable for a polishing pad, and a polishing pad made using the polyurethane foam. The polyurethane foam is obtained by reacting a blend composition containing (A) a polyisocyanate, (B) a polyol, (C) a chain extender with a molecular weight of equal to or smaller than 400, and (D) water, and in the blend composition, MDI is blended as a main component of the component (A) and a blending amount of the MDI is 45 to 70 parts by weight when a total weight of the respective components (A), (B), and (C) is taken as 100 parts by weight.Type: GrantFiled: April 21, 2009Date of Patent: October 15, 2013Assignees: Toyo Polymer Co., Ltd., Nitta Haas IncorporatedInventors: Michiro Goto, Kazuo Takemoto, Nobuyuki Ooshima, Shin-ichi Haba, Kouichi Yoshida, Norio Kawai
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Publication number: 20110039966Abstract: The present invention provides a polyurethane foam, which, despite having a low specific gravity, has a hardness and an elasticity favorable for a polishing pad, and a polishing pad made using the polyurethane foam. The polyurethane foam is obtained by reacting a blend composition containing (A) polyisocyanate, (B) a polyol, (C) a chain extender with a molecular weight of equal to or smaller than 400, and (D) water, and in the blend composition, MDI is blended as a main component of the component (A) and a blending amount of the MDI is 45 to 70 parts by weight when a total weight of the respective components (A), (B), and (C) is taken as 100 parts by weight.Type: ApplicationFiled: April 21, 2009Publication date: February 17, 2011Applicants: TOYO POLYMER CO., LTD., NITTA HAAS INCORPORATEDInventors: Michiro Goto, Kazuo Takemoto, Nobuyuki Ooshima, Shin-ichi Haba, Kouichi Yoshida, Norio Kawai
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Publication number: 20090312444Abstract: An object of the invention is, in producing a cast molded article by crosslinking a water-dispersed urethane prepolymer with a polyamine compound, providing a method for producing a cast molded article made of a polyurethane porous substance in which a cured reactant has good demolding properties and a cast molded article with a fine structure can be easily produced, and a cast molded article having a fine structure with high dimensional accuracy. The cast molded article of this invention is produced by reacting polyol, a chain length regulator, isocyanate and 0.1 through 4 wt % of a hydrophilic chain length regulator to one another, allowing a resultant urethane prepolymer having a terminal isocyanate group to be mixed with and dispersed in water, mixing a resultant water-dispersed urethane prepolymer with 1,4-diaminobutane and injecting a resultant mixture into a die for crosslinkage, and demolding a resultant cured reactant and removing moisture from the cured reactant.Type: ApplicationFiled: January 7, 2009Publication date: December 17, 2009Applicant: TOYO POLYMER CO., LTD.Inventors: Katsuji Shinohara, Kazuo Takemoto, Hitomi Ninomiya, Motoyoshi Hosokawa, Chihiro Tani
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Patent number: 5925580Abstract: A repellent cloth in which repellency is added to the cloth by manufacturing cloth with expensive fluoroplastic fibers in amounts sufficient to impart 80% repellency to the cloth.Type: GrantFiled: April 1, 1997Date of Patent: July 20, 1999Assignee: Toyo Polymer Co., Ltd.Inventor: Yoshio Midorikawa
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Patent number: 4618280Abstract: A push-button type writing instrument is constructed of a refill received within a barrel slidably in the axial direction, a writing part receiving mechanism provided at a forward end portion of the refill, and sealing means provided with the writing part receiving mechanism for sealing a writing part. Owing to the provision of the sealing means, the ink of the writing instrument is kept free from evaporation and flow while the writing part is received within the barrel.Type: GrantFiled: August 14, 1984Date of Patent: October 21, 1986Assignees: Toyo Polymer Co., Ltd., Kotobuki & Co., Ltd.Inventor: Hidehei Kageyama
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Patent number: 4540300Abstract: A retractable capless marking pen using an oil ink or an aqueous ink, having a retractable writing member consisting of a small diameter portion and a large diameter portion, and having a constitution capable of preventing the evaporation of the ink by storing the writing head of the writing member hermetically within a sealed elastic cylinder.Type: GrantFiled: February 24, 1984Date of Patent: September 10, 1985Assignees: Toyo Polymer Co., Ltd., Kotobuki & Co., Ltd.Inventor: Yoshio Midorikawa
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Patent number: D635387Type: GrantFiled: July 21, 2009Date of Patent: April 5, 2011Assignee: Toyo Polymer Co., Ltd.Inventors: Hitomi Ninomiya, Chihiro Tani, Natsuko Yukitake, Misa Kiyoshi
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Patent number: D636120Type: GrantFiled: August 16, 2010Date of Patent: April 12, 2011Assignee: Toyo Polymer Co., Ltd.Inventor: Hitomi Ninomiya
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Patent number: D638163Type: GrantFiled: January 8, 2010Date of Patent: May 17, 2011Assignee: Toyo Polymer Co., Ltd.Inventors: Hitomi Ninomiya, Chihiro Tani, Nozomi Kobayashi, Noriyasu Kaneda
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Patent number: D639504Type: GrantFiled: February 22, 2011Date of Patent: June 7, 2011Assignee: Toyo Polymer Co., Ltd.Inventor: Hitomi Ninomiya
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Patent number: D640827Type: GrantFiled: August 16, 2010Date of Patent: June 28, 2011Assignee: Toyo Polymer Co., Ltd.Inventor: Hitomi Ninomiya