Patents Assigned to Ihara Nikkei Chemical Industry Co., Ltd.
  • Method for preparing .beta.-chloropivaloyl chloride
    Patent number: 4770821
    Abstract: There is provided a method for preparing .beta.-chloropivaloyl chloride which includes chlorinating pivalic acid to form pivaloyl chloride and reacting the resultant pivaloyl chloride with a chlorine gas in a gaseous phase to form .beta.-chloropivaloyl chloride. Both steps may be carried out by a continuous process or a batch process. According to this method, the chlorination in the second step can be achieved at a low temperature, and the formation of by-products is reduced and production efficiency can be enhanced.
    Type: Grant
    Filed: June 3, 1986
    Date of Patent: September 13, 1988
    Assignee: Ihara Nikkei Chemical Industry Co., Ltd.
    Inventors: Kenichi Miyazawa, Osamu Furusawa