Hollow yarn membrane module, potting agent therefor and method for deaeration of liquid chemicals
US6648945B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 2, 2001 |
| Grant date | Nov 18, 2003 |
| Priority date | — |
| Expiry date | Oct 2, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09J163/00
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A hollow fiber membrane module and potting material can be used for chemical deaeration in a semiconductor production process, in printers, in a liquid crystal sealing process or in a chemical production process. A hollow fiber membrane module 1 includes, as potting material 2, an epoxy resin cured product in which the weight change per unit surface area of a potting material test piece after immersing the test piece in a chemical for 6 months at room temperature is within the range of −20 to +20 mg/cm2, and as housing 4, a polyolefin in which the weight change per unit surface area of a test piece after immersing the test piece in a chemical for 6 months at room temperature is within the range of −20 to +20 mg/cm2, and the total metal content is 300 ppm or less. The module has a long service life when used for chemical treatment without leakage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.