Molecular size of hydrodynamic volume of sulfonated aromatic condensates used to impart stain resistance to polyamide carpets
US5131909A · kind A · utility
8Cited by
4References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 17, 1990 |
| Grant date | Jul 21, 1992 |
| Priority date | — |
| Expiry date | May 17, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/23993
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
In a continuous application process with post-steaming, SAC's having molecular size (hydrodynamic volume) defined by elution volume (Ve) determined by Size Exclusion Chromatography (SEC) of between 6.3 and 6.5 ml. using the procedure described, are such that they are not too small so that migration into the fiber occurs (reduces ring dyeing effect) nor are they too large such that they require extremely long steaming times or the use of swelling agents to be effective. This is independent of the degree of sulfonation of the SAC.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.