Title:
チタンおよび亜鉛を含む安定な水溶液およびそれを用いた方法
Document Type and Number:
Japanese Patent JP2005523961
Kind Code:
A
Abstract:
A process that can be used as catalyst in esterification, transesterification or polycondensation is disclosed, which comprises a stable solution comprising (a) titanium in the form of a titanium alpha-hydroxycarboxylic acid or its salt, (b) a C1-C6 carboxylic acid, and (c) zinc in the form of a water-soluble zinc salt, and (d) water. Also disclosed is an esterification, transesterification or polycondensation process, which comprises contacting, in the presence of the solution process, an organic acid or its ester or its salt with an alcohol, optionally in the presence of a phosphorus compound, an organic or inorganic toning agent such as cobalt acetate, or combinations thereof. The process can also comprise combining aqueous solutions of a titanium alpha-hydroxycarboxylic acid or its salt and a zinc salt in an alcohol to produce an alcohol solution contacting the alcohol solution with a mixture comprising organic acid or its ester or its salt and a second alcohol, or comprise combining an aqueous solutions of a titanium alpha-hydroxycarboxylic acid or its salt and aqueous solution of a zinc salt with the mixture.
Inventors:
Donald Edward Puig
Edward Francis McBridge
Cleve Alexander Hamilton
Andrea Claire Smith
Edward Francis McBridge
Cleve Alexander Hamilton
Andrea Claire Smith
Application Number:
JP2003587863A
Publication Date:
August 11, 2005
Filing Date:
April 15, 2003
Export Citation:
Assignee:
E.I.DU PONT DE NEMOURS AND COMPANY
International Classes:
B01J31/04; B01J31/12; B01J31/22; B01J31/26; B01J31/28; C08G63/82; C08G63/85; B01J31/18; C08G63/83; (IPC1-7): C08G63/85; B01J31/22; B01J31/26; B01J31/28
Attorney, Agent or Firm:
Yoshikazu Tani
Kazuo Abe
Kazuo Abe