Patents by Inventor Tooru Ookoshi

Tooru Ookoshi 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).

  • Patent number: 5391801
    Abstract: A hydroformylation process for preparing a hydroformylated product by reacting an olefinic compound with hydrogen and carbon monoxide in the presence of a Group VIII metal catalyst, in the reaction of which there is present a phosphite compound having the formula (I), ##STR1## wherein R.sup.1 and R.sup.2 are respectively an aromatic hydrocarbon groups which may be the same or different and the aromatic hydrocarbon group has at least a hydrocarbon group on a carbon atom adjacent to a carbon atom bonded with an oxygen atom as a substituent; A.sup.1 is an n-valent organic group having an aliphatic hydrocarbon group, a cycloaliphatic hydrocarbon group or an aromatic hydrocarbon group bonded with an adjacent oxygen atom, which may respectively have a substituent; n is an integer of from 2 to 4; and the respective [--O--P(OR.sup.1)(OR.sup.2)] group may be the same or different.
    Type: Grant
    Filed: April 16, 1993
    Date of Patent: February 21, 1995
    Assignee: Mitsubishi Kasei Corporation
    Inventors: Keiichi Sato, Yuji Kawaragi, Masaki Takai, Tooru Ookoshi
  • Patent number: 5306839
    Abstract: A method for producing an aldehyde, which comprises reacting an olefinic compound with carbon monoxide and hydrogen in the presence of a Group VIII metal compound and an organic phosphite compound to produce a corresponding aldehyde, wherein an organic phosphite compound of the formula (I):P(OR.sub.1)(OR.sub.2)(OR.sub.3) (I)wherein each of R.sub.1 and R.sub.2 which may be the same or different, is a 2-naphthyl group which may have a substituent, provided that at least one of R.sub.1 and R.sub.2 is a substituted 2-naphthyl group of the formula (II): ##STR1## wherein R.sub.4 is a C.sub.1-30 organic group, and each of R.sub.5, R.sub.6, R.sub.7, R.sub.8 and R.sub.9 which may be the same or different, is a hydrogen atom or an organic group, and R.sub.3 is 1 a 2-naphthyl group which may have a substituent, 2 a phenyl group which may have a substituent, or 3 an alkyl group which may have a substituent, is used as said organic phosphite compound.
    Type: Grant
    Filed: March 2, 1993
    Date of Patent: April 26, 1994
    Assignee: Mitsubishi Kasei Corporation
    Inventors: Keiichi Sato, Masaki Takai, Yuji Kawaragi, Tooru Ookoshi
  • Patent number: 5235113
    Abstract: A hydroformylation process for preparing a hydroformylated product by reacting an olefinic compound with hydrogen and carbon monoxide in the presence of a Group VIII metal catalyst, in the reaction of which there is present a phosphite compound having the formula (I), ##STR1## wherein R.sup.1 and R.sup.2 are respectively an aromatic hydrocarbon groups which may be the same or different and the aromatic hydrocarbon group has at least a hydrocarbon group on a carbon atom adjacent to a carbon atom bonded with an oxygen atom as a substituent; A.sup.1 is an n-valent organic group having an aliphatic hydrocarbon group, a cycloaliphatic hydrocarbon group or an aromatic hydrocarbon group bonded with an adjacent oxygen atom, which may respectively have a substituent; n is an integer of from 2 to 4; and the respective ##STR2## group may be the same or different.
    Type: Grant
    Filed: June 9, 1992
    Date of Patent: August 10, 1993
    Assignee: Mitsubishi Kasei Corporation
    Inventors: Keiichi Sato, Yuji Kawaragi, Masaki Takai, Tooru Ookoshi
  • Patent number: 5227532
    Abstract: A method for producing an aldehyde, which comprises reacting an olefinic compound with carbon monoxide and hydrogen in the presence of a Group VIII metal compound and an organic phosphite compound to produce a corresponding aldehyde, wherein an organic phosphite compound of the formula (I):P(OR.sub.1)(OR.sub.2)(OR.sub.3) (I)wherein each of R.sub.1 and R.sub.2 which may be the same or different, is a 2-naphthyl group which may have a substituent, provided that at least one of R.sub.1 and R.sub.2 is a substituted 2-naphthyl group of the formula (II): ##STR1## wherein R.sub.4 is a C.sub.1-30 organic group, and each of R.sub.5, R.sub.6, R.sub.7, R.sub.8 and R.sub.9 which may be the same or different, is a hydrogen atom or an organic group, and R.sub.3 is 1 a 2-naphthyl group which may have a substituent, 2 a phenyl group which may have a substituent, or 3 an alkyl group which may have a substituent, is used as said organic phosphite compound.
    Type: Grant
    Filed: March 12, 1992
    Date of Patent: July 13, 1993
    Assignee: Mitsubishi Kasei Corporation
    Inventors: Keiichi Sato, Masaki Takai, Yuji Kawaragi, Tooru Ookoshi