Procedure for the controlled production or modification of polymeric products by means of IR-ATR spectroscopy
US6522408B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 4, 1999 |
| Grant date | Feb 18, 2003 |
| Priority date | — |
| Expiry date | Feb 4, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N21/552
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
This invention relates to a procedure for the controlled production or for the modification of polymeric products using IR-ATR spectroscopy, wherein the case of a polymerization reaction the extinction is determined of the characteristic IR absorption bands for the monomer used and the resulting polymeric product or in the case of a polymer modification the characteristic IR absorption bands of the starting material used and of the modified polymeric product are determined, the degree of conversion or the degree of modification is calculated from the absorption bands, and when the desired degree of conversion or the desired degree of modification is reached the reaction is stopped by suitable measures. By means of the procedure, which is described according to the invention, it is possible to carry out polymerization reactions or the modification of polymeric products to the desired degree of conversion or degree of modification by means of IR-ATR spectroscopy, without high technical expenditure and under accurately controlled conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.