Patent · US Expired

Process for monitoring polycondensation or polyaddition reactions

US5578827A · kind A · utility

2Cited by

2References

7Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Udo Wolf · Kempen, DE
Manfred Schreckenberg · Krefeld, DE

Key dates

Filing date	Jul 19, 1995
Grant date	Nov 26, 1996
Priority date	—
Expiry date	Jul 19, 2015

Classification

Technology area (CPC G)Physics
CPC primaryG01N2021/058
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

This invention relates to a process for monitoring polycondensation or polyaddition reactions by measuring the OH, NH or NCO value or acid value of participating reactants by means of infra-red ATR spectroscopy of the associated, temperature-dependent absorption bands and compensating for the temperature dependence by calibrating the self-absorption of the ATR measuring crystal.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.