| abstract |
An object of the present invention is to provide a moisture trapping agent capable of forming a moisture trap that is excellent in film forming property and storage stability of a composition for forming a moisture trap, and is excellent in hygroscopicity, heat resistance and adhesion. The present invention is a moisture scavenger comprising a compound (a) containing a structure represented by the following formula (1). In the following formula (1), R 1 is (r1) an acyl group, (r2) a hydrocarbon group having 1 to 30 carbon atoms, or (r3) -O- between the carbon-carbon bonds of this hydrocarbon group,- S -, - CO -, - CS -, - NH -, - SO- and -SO 2 - group containing at least one group selected from the group consisting of, or (r4) of (r1), ( A group in which a part of hydrogen atoms of r2) and (r3) is substituted with a hydroxy group, a halogen atom or a cyano group. M 1 is a boron atom, an aluminum atom, a gallium atom, an indium atom, or a thallium atom. X is an organic ligand. [Selection figure] None |