Patents Assigned to SK Evertec Co., Ltd.
  • Double metal cyanide complex catalyst for producing polyol
    Patent number: 6627575
    Abstract: A double metal cyanide complex catalyst for producing polyol, which is produced by using monovalent alcohol and polyvalent alcohol as a complexing agent. The double metal cyanide complex catalyst has advantages in that when polyol is produced by an epoxide polymerization reaction, the amount of unsaturated polyol produced is small, catalyst activation time is short, and the production yield of polyol is increased. There is no need to remove remaining catalyst from polyol after the polymerization reaction.
    Type: Grant
    Filed: March 29, 2002
    Date of Patent: September 30, 2003
    Assignee: SK Evertec Co., Ltd.
    Inventors: Il Kim, Sang Hyun Lee
  • Double metal cyanide complex catalyst for producing polyol
    Publication number: 20020177523
    Abstract: Disclosed is a double metal cyanide complex catalyst for producing polyol, which is produced by using monovalent alcohol and polyvalent alcohol as a complexing agent. The double metal cyanide complex catalyst has advantages in that when polyol is produced by an epoxide polymerization reaction, the amount of unsaturated polyol produced is small, catalyst activation time is short, and the production yield of polyol is increased, therefore there is no need to remove remaining catalyst from polyol after polymerization reaction.
    Type: Application
    Filed: March 29, 2002
    Publication date: November 28, 2002
    Applicant: SK Evertec Co., Ltd.
    Inventors: Il Kim, Sang Hyun Lee