Melt process for preparing copolyesters using triarylphosphine catalysts
US4250281A · kind A · utility
5Cited by
12References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 21, 1979 |
| Grant date | Feb 10, 1981 |
| Priority date | — |
| Expiry date | Mar 21, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/19
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Copolyesters having random sequence distributions can be prepared in the melt phase in the presence of triarylphosphine catalysts. These copolyesters are prepared by reacting a first polyester with either a second polyester or polyester precursors. They are useful for the formulation of films, fibers, binders, adhesives, molded articles, sheeting and lacquers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.