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US 6,540,936 B1Granted
Aldehyde gas absorbent and process for absorbing aldehyde gas
AssigneeToagosei Co., Ltd.
InventorsOsamu Takagi, Toshio Hirukawa, Noriyuki Yamamoto
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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—CH2CH2NH2 wherein 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.
Claims9
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—CH2CH2NH2
- wherein n stands for an integer of from 0 to 3.
2 more elements
Dependencies are inferred from the claim text.