Isodisperse Telechelic Polymers and their Polyurethane Derivatives.
Abstract
This report describes the so-called 'isodisperse telechelic polymerization' method for the preparation of hydroxy-terminated polybutadienes (HTPBD). From these polymer diols polyurethane can be produced. This method relates to a process for preparihg (co)polymers, with poly- dispersity approaching the theoretical polydispersity and with functional groups in alpha, omega-positions by radical (co)polymerization of radically polymerizable monomer(s), using one or more initiators. The isodisperse polymerization can be approximately realized by isothermal polymerization but with very rigid polymerization regime. The exact isodisperse polymerization regime can be realized under nonisothermal conditions. For the practical realization of the method, the degree of polymerization is regulated by the continuous elevation of the temperature according to a temperature program' determined by a function describing the variation of the polymerization process against time with the aid of independent variables affecting the process (concentrations, initial temperature, etc.).
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 15, 1996
- Accession Number
- ADA324659
Entities
People
- Ferenc Tuedoes
- Tamara Foeldes-beerezsnich
Organizations
- Hungarian Academy of Sciences