Patents by Inventor Yoshitaka Sunayama

Yoshitaka Sunayama has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20130005885
    Abstract: An odorless curable composition containing a hydrolyzable silyl group-containing urethane compound with good storage stability is provided. A curable composition comprising 100 parts by mass of a polymer (P) obtained by a urethane-forming reaction of a polymer (pP) having a polyoxyalkylene chain and hydroxyl groups and a compound (U) represented by the following formula (I): (wherein X1 is a C1-6 alkoxy group, R1 is a monovalent C1-20 organic group (other than an alkoxy group) which may have a substituent, each of R2 and R3 is independently a C1-10 alkyl group or a hydrogen atom, and a is an integer of from 1 to 3) in the presence of a urethane-forming catalyst and from 0.0001 to 0.1 part by mass of an inorganic acid or an organic acid having an active hydrogen bonded to an oxygen atom.
    Type: Application
    Filed: September 12, 2012
    Publication date: January 3, 2013
    Applicant: Asahi Glass Company, Limited
    Inventors: Yoshitaka Sunayama, Yuki Hatanaka, Hideaki Tanaka
  • Publication number: 20130005882
    Abstract: An odorless curable composition containing a hydrolyzable silyl group-containing urethane compound with good storage stability is provided. A curable composition comprising 100 parts by mass of a polymer (P) obtained by a urethane-forming reaction of a polymer (pP) having a polyoxyalkylene chain and hydroxyl groups and a compound (U) represented by the following formula (I): Si(X1)m(R1)3-m-Q-NCO ??(I) (wherein Q is a C2-20 bivalent linear hydrocarbon group, X1 is a C1-6 alkoxy group, R1 is a C1-6 alkyl group, and m is an integer of from 1 to 3) in the presence of a urethane-forming catalyst and from 0.0001 to 0.1 part by mass of an inorganic acid or an organic acid having an active hydrogen bonded to an oxygen atom.
    Type: Application
    Filed: September 12, 2012
    Publication date: January 3, 2013
    Applicant: Asahi Glass Company, Limited
    Inventors: Yoshitaka SUNAYAMA, Yuki HATANAKA, Hideaki TANAKA
  • Patent number: 8211992
    Abstract: To provide a curable composition comprising a polymer having a reactive silicon group as a curing component, containing no or substantially no organic metal compound, and having a high curing rate. A curable composition comprising a polymer (A) having a reactive silicon group as a curing component and comprising an amidine derivative salt (B) represented by the following formula (2) as a curing catalyst: wherein R2 is a hydrocarbon group or a hydrogen atom, each of R3 and two R4's which are independent of one another, is an organic group or a hydrogen atom, R5 is a C1-25 hydrocarbon group or a hydrogen atom, and X2 is an organic acid ion, an inorganic acid ion or a hydroxy group, and optional two or more of R2, R3 and two R4's may be bonded to form a cyclic structure.
    Type: Grant
    Filed: July 22, 2010
    Date of Patent: July 3, 2012
    Assignee: Asahi Glass Company, Limited
    Inventors: Yoshitaka Sunayama, Genichirou Enna
  • Publication number: 20120142857
    Abstract: A curable composition having a low viscosity and good workability which can give a mechanically strong cured product is provided. A curable composition comprising a curable resin component containing a polymer (A) having a polyoxyalkylene chain, a reactive silicon group and a urethane bond in the molecule and at least one silicate mineral (X) selected from the group consisting of a silicate mineral (B) represented by Al2O3.2SiO2.nH2O (wherein n is from 0 to 4) and a calcined silicate mineral (C) obtained by calcining the silicate mineral at 350 to 1,200° C.
    Type: Application
    Filed: February 13, 2012
    Publication date: June 7, 2012
    Applicant: Asahi Glass Company, Limited
    Inventors: Yuki Hatanaka, Yoshitaka Sunayama, Hideaki Tanaka
  • Patent number: 8030428
    Abstract: To provide a curable composition which has a high curing rate and can provide a cured product having good durability. A curable composition comprising an oxyalkylene polymer (A) having a reactive silicon group represented by the following formula (1), and a quaternary ammonium salt (B): —SiX1aR13-a??(1) wherein R1 is a C1-20 monovalent organic group which may have a substituent, X1 is a hydroxyl group or a hydrolyzable group, and a is an integer of from 1 to 3; provided that when plural R1s are present, they may be the same or different from one another, and when plural X1s are present, they may be the same or different from one another.
    Type: Grant
    Filed: February 19, 2009
    Date of Patent: October 4, 2011
    Assignee: Asahi Glass Company, Limited
    Inventors: Teruhiko Yasuda, Yoshitaka Sunayama, Genichirou Enna
  • Patent number: 7906578
    Abstract: To provide a room-temperature-curable composition which comprises an oxyalkylene polymer containing hydrolyzable silicon groups, which has ensured working time and curing rate required for operation, and which can provide a cured article having good tensile properties. A room-temperature-curable composition comprising a polymer (a1) and a curing catalyst (b), wherein the polymer (a1) is a linear oxyalkylene polymer having at least two hydrolyzable silicon groups of the formula (1), at different molecular terminals: —Si(OR)3??(1) wherein each R independently represents a C1-6 organic group.
    Type: Grant
    Filed: June 20, 2008
    Date of Patent: March 15, 2011
    Assignee: Asahi Glass Company, Limited
    Inventors: Isao Sato, Yoshitaka Sunayama, Genichirou Enna
  • Publication number: 20100286344
    Abstract: To provide a curable composition comprising a polymer having a reactive silicon group as a curing component, containing no or substantially no organic metal compound, and having a high curing rate. A curable composition comprising a polymer (A) having a reactive silicon group as a curing component and comprising an amidine derivative salt (B) represented by the following formula (2) as a curing catalyst: wherein R2 is a hydrocarbon group or a hydrogen atom, each of R3 and two R4's which are independent of one another, is an organic group or a hydrogen atom, R5 is a C1-25 hydrocarbon group or a hydrogen atom, and X2 is an organic acid ion, an inorganic acid ion or a hydroxy group, and optional two or more of R2, R3 and two R4's may be bonded to form a cyclic structure.
    Type: Application
    Filed: July 22, 2010
    Publication date: November 11, 2010
    Applicant: ASAHI GLASS COMPANY, LTD.
    Inventors: Yoshitaka SUNAYAMA, Genichirou Enna
  • Publication number: 20090163662
    Abstract: To provide a curable composition which has a high curing rate and can provide a cured product having good durability. A curable composition comprising an oxyalkylene polymer (A) having a reactive silicon group represented by the following formula (1), and a quaternary ammonium salt (B): —SiX1aR13-a??(1) wherein R1 is a C1-20 monovalent organic group which may have a substituent, X1 is a hydroxyl group or a hydrolyzable group, and a is an integer of from 1 to 3; provided that when plural R1s are present, they may be the same or different from one another, and when plural X1s are present, they may be the same or different from one another.
    Type: Application
    Filed: February 19, 2009
    Publication date: June 25, 2009
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Teruhiko YASUDA, Yoshitaka Sunayama, Genichirou Enna
  • Publication number: 20080262143
    Abstract: To provide a room-temperature-curable composition which comprises an oxyalkylene polymer containing hydrolyzable silicon groups, which has ensured working time and curing rate required for operation, and which can provide a cured article having good tensile properties. A room-temperature-curable composition comprising a polymer (a1) and a curing catalyst (b), wherein the polymer (a1) is a linear oxyalkylene polymer having at least two hydrolyzable silicon groups of the formula (1), at different molecular terminals: —Si(OR)3 ??(1) wherein each R independently represents a C1-6 organic group.
    Type: Application
    Filed: June 20, 2008
    Publication date: October 23, 2008
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Isao SATO, Yoshitaka SUNAYAMA, Genichirou ENNA