Patents by Inventor Etsuko Mitarai

Etsuko Mitarai 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).

  • Process for producing N-(1-alkoxyethyl)carboxylic amides
    Patent number: 6166253
    Abstract: A process for producing N-(1-alkoxyethyl)carboxylic amides by reacting alcohols of 1-5 carbon atoms with N-vinylcarboxylic amides in the presence of an acidic catalyst, or by utilizing unreacted starting material, unreacted intermediate or unrecovered product for synthesis of N-(1-alkoxyethyl)carboxylic amides. A process for producing N-(1-alkoxyethyl)carboxylic amides by adding a water-soluble strong acid during reaction between a carboxylic amide and a starting material containing acetaldehyde and alcohol and/or a starting material containing an acetal, in an amount of 2.times.10.sup.-3 to 3.times.10.sup.-1 equivalents to 1 mole of the carboxylic amide in the starting material, and using a strongly acidic ion-exchange resin as the catalyst.
    Type: Grant
    Filed: September 11, 1998
    Date of Patent: December 26, 2000
    Assignee: Showa Denko K.K.
    Inventors: Toshiyuki Aizawa, Hitoshi Nakamura, Tetsuo Kudo, Etsuko Mitarai
  • Process for producing n-(1-alkoxyethyl) carboxylic amides
    Patent number: 5852214
    Abstract: A process for producing N-(1-alkoxyethyl)carboxylic amides by reacting alcohols of 1-5 carbon atoms with N-vinylcarboxylic amides in the presence of an acidic catalyst, or by utilizing unreacted starting material, unreacted intermediate or unrecovered product for synthesis of N-(1-alkoxyethyl)carboxylic amides. A process for producing N-(1-alkoxyethyl)carboxylic amides by adding a water-soluble strong acid during reaction between a carboxylic amide and a starting material containing acetaldehyde and alcohol and/or a starting material containing an acetal, in an amount of 2.times.10.sup.-3 to 3.times.10.sup.-1 equivalents to 1 mole of the carboxylic amide in the starting material, and using a strongly acidic ion-exchange resin as the catalyst.
    Type: Grant
    Filed: April 4, 1997
    Date of Patent: December 22, 1998
    Assignee: Showa Denko K.K.
    Inventors: Toshiyuki Aizawa, Hitoshi Nakamura, Tetsuo Kudo, Etsuko Mitarai