Markers for aqueous compositions
US10513594B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 20, 2017 |
| Grant date | Dec 24, 2019 |
| Priority date | — |
| Expiry date | Jan 20, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2030/8854
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention provides aqueous polymer compositions containing one or more, or, preferably, two or more markers selected from a C1-C12 alkyl phenyl ether having a formula Ph(R2)m(OR1)n, wherein Ph is an aromatic ring containing group having from six to nine carbon atoms, R1 is a C1-C12 alkyl group, R2 is a C1-C12 alkyl group, m is an integer of from 0 to 5, n is an integer of from 1 to 3, and (m+n) is an integer of from 1 to 6. The markers are readily detectable, such as by mass spectroscopy, upon solvent extraction and separation from the aqueous polymer compositions, or from dried or cured coatings, film or layers thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.