Aldehyde gas absorbent and process for absorbing aldehyde gas
US6540936B1 · kind B1 · utility
36Cited by
11References
9Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 19, 2000 |
| Grant date | Apr 1, 2003 |
| Priority date | — |
| Expiry date | Sep 3, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2251/21
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An aldehyde gas absorbent comprising: a porous silicon dioxide having a specific surface area of from 400 to 900 m2/g and an average pore size of from 0.1 to 10 nm; and a polyamine compound carried on the porous silicon dioxide in an amount of from 0.02 to 2.0 mmol/g, said polyamine compound being represented by the following formula:H2N—(CH2CH2—NH)n—CH2CH2NH2wherein n stands for an integer of from 0 to 3. Also disclosed are a process for absorbing an aldehyde gas and an aldehyde gas-absorbing article using the aldehyde gas absorbent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.