Method for measuring diffusion performance of acid dye in color paste
US9958370B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 11, 2014 |
| Grant date | May 1, 2018 |
| Priority date | — |
| Expiry date | Nov 17, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2013/003
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention provides a method for measuring the diffusion performance of an acid dye in a color paste, comprising preparing a primary paste and placing the primary paste into a transparent cylindrical container; adding a dye to the primary paste formulate a color paste, and flatly and uniformly paving a layer of the color paste on an upper surface of the primary paste; performing constant-temperature treatment at 60-95° C. on the cylindrical container, so that the dye in the color paste on the top of the blank primary paste in the cylindrical container diffuses downwards to the bottom of the cylinder; and sampling the primary paste from a sampling hole, and diluting the sampled primary paste with deionized water. The method of the invention has simple operation steps, reliable and safe experiments, highly stable test data and good reproducibility of results, and high temperature and high pressure are not required herein.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.