Method and element for controlling release of a disinfectant from a substrate
US5421898A · kind A · utility
34Cited by
13References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 21, 1992 |
| Grant date | Jun 6, 1995 |
| Priority date | — |
| Expiry date | Feb 21, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T442/2525
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
This present invention provides an element for controlling release of a quaternary disinfectant in aqueous solutions comprising a substrate coated with the residue of an aqueous composition of a water soluble polymer and a quaternary ammonium disinfectant characterized in that the water soluble polymer has weight average molecular weight of 85,000 to 186,000 and a degree of hydrolysis of 87 to 89 percent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.