FOAMED ELEMENT CONTAINING CELLULOSE Russian patent published in 2011 - IPC C08J9/00 C08L1/02 

FIELD: chemistry.

SUBSTANCE: invention relates to a foamed element with a hydrophilic agent formed from cellulose contained in the foam material, where the foamed element containing cellulose is capable of reversibly absorbing moisture, where the cellulose has the structural type of a crystalline modification of cellulose-II, and content of the cellulose from the total weight of the foam material ranges from 0.1 wt %, particularly 5 wt %, to 10 wt %, particularly 8.5 wt %, and content of moisture in the foamed element, starting from the initial moisture value corresponding to equilibrium moisture relative the first external atmosphere with first temperature and moisture conditions with given temperature and relative moisture, increases when used in a second external atmosphere different from the first, with second temperature and moisture conditions with a higher temperature and/or higher relative moisture compared to the first conditions, and moisture absorbed when using cellulose-II contained in the foamed element after using in the second external atmosphere is once more given up to the second atmosphere after a time interval ranging from 1 hour to 16 hours until the initial moisture value, which corresponds to equilibrium relative moisture of the first external atmosphere, is reached again.

EFFECT: obtaining a foamed element with improved moisture regulation.

14 cl, 2 ex, 2 tbl, 3 dwg