Process for producing polycondensates
US4313870A · kind A · utility
8Cited by
9References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 5, 1978 |
| Grant date | Feb 2, 1982 |
| Priority date | — |
| Expiry date | Sep 5, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K9/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
In a method producing a polycondensate by bulk polycondensation of a monomer (or a reactant mixture) which is a fluid at the polycondensation temperature, an improvement which comprises carrying out the polycondensation until substantially the whole polycondensate becomes a solid polydispersion while continually applying a shearing force sufficient for maintaining the polycondensation system in polydispersed state at a temperature of below the sintering of the produced polycondensate but sufficiently high for allowing the polycondensation to proceed substantially.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.