High strength cast modules for supporting reverse osmosis membranes
US4076626A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 19, 1976 |
| Grant date | Feb 28, 1978 |
| Priority date | — |
| Expiry date | Jan 19, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S521/919
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A rigid, hollow, porous, strongly consolidated reverse osmosis membrane support module having a wall containing bonded, resin coated filler particles, wherein the inside of said wall supports a reverse osmosis membrane, is made by: (A) forming a 100 percent solids, solventless, latent catalyzed resin composition consisting essentially of an admixture of liquid epoxy resin, liquid organic acid anhydride curing agent, liquid diepoxide reactive diluent and quaternary ammonium, phosphonium or arsonium salt latent catalyst; the solventless resin composition having a viscosity of below about 100 cp. at 25.degree. C, (B) mixing the solventless resin composition with a quantity of filler particles, so that the filler is coated with resin, and the resin constitutes about 1 to 18 percent of the resin coated filler weight, (C) casting the resin coated filler particles into a mold, the mold having a configuration effective to provide a cast structure having at least one interior axial bore therethrough, (D) heating the mold containing the cast, contacting, resin coated filler particles, to cure the resin and bond adjacent resin coated filler particles together, (E) cooling the mold and removin…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.