Patent · US Expired

Absorption of formaldehyde in closed, gastight packs

US6316521A · kind A · utility

5Cited by

3References

9Claims

0Family size

Assignee

Ticona LLC · US

Inventors

Stefan Disch · Goldbach, DE
Tilo Vaahs · Kelkheim, DE

Key dates

Filing date	Nov 27, 2000
Grant date	Nov 13, 2001
Priority date	—
Expiry date	Nov 27, 2020

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61L9/01
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A small amount of an absorber mixture comprising activated aluminum oxide and potassium permanganate deodorizes the space within closed, gastight packs, in particular the space within packs of the type in which objects or materials which comprise polyacetal or otherwise release formaldehyde are present. Deodorization here is the removal (i.e. elimination or absorption) of volatile constituents emerging from plastic moldings or from plastic materials, in particular cleavage products, such as formaldehyde. The process is particularly suitable for the packaging of moldings or of assemblies which are to be used in the medical sector, in the food and drink sector or in any other sector affecting health.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.