Title:
PRODUCTION OF THERMALLY STABLE POLYOXYMETHYLENE COPOLYMERS
Document Type and Number:
Japanese Patent JP2000086737
Kind Code:
A
Abstract:
To provide a method for economically producing thermally stable polyoxymethylene copolymers.
This method is to produce polyoxymethylene copolymers with a low content of thermally unstable end groups and comprises polymerizing 1,3,5-trioxane with at least one kind of a cyclic ether and an acetal comonomer in the presence of a formaldehyde dialkyl acetal with the assistance of a strong protonic acid or a Lewis acid initiator. In the above method, the initiator is dissolved in the formaldehyde dialkyl acetal before introducing the initiator into the 1,3,5-trioxane and the comonomers.
Inventors:
GRONNER ROBERT
MUECK KARL-FRIEDRICH
ROESCHERT HORST
VERMA SATYAJIT
YEARWOOD MICHAEL
MUECK KARL-FRIEDRICH
ROESCHERT HORST
VERMA SATYAJIT
YEARWOOD MICHAEL
Application Number:
JP17510899A
Publication Date:
March 28, 2000
Filing Date:
June 22, 1999
Export Citation:
Assignee:
TICONA GMBH
International Classes:
C08G2/18; C08G2/06; C08G2/24; C08G4/00; C08G67/00; (IPC1-7): C08G2/18
Attorney, Agent or Firm:
Kazuo Shamoto (5 outside)