Microporous membrane, method of manufacture, and method of use
US5128041A · kind A · utility
28Cited by
7References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 15, 1991 |
| Grant date | Jul 7, 1992 |
| Priority date | — |
| Expiry date | May 15, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2377/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Microporous membranes having positive zeta potentials in alkaline pH are provided by radiation grafting diallyldimenthylammonium dimethyl ammonium chloride to the surraces of a microporous, polyamide membrane using ionizing radiation. The membranes have particular use in microelectronics manufacture where quick rinse up times with ultrapure water are required.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.