Abstract: (Object) An object is to suppress the peeling and lamination misalignment of ceramic green sheets without deteriorating the sheet strength. (Solution) A ceramic green sheet lamination aid comprising a compound represented by formula (1). Z—[O-(AO)n-H]x??(1) (Z represents a residual group of a compound having a number of carbons group of 1 to 22 and having hydroxyl groups of 1 to 6 in which all of said hydroxyl groups are removed; x represents a number of 1 to 6; AO represents an oxyalkylene group having a number of carbons of 2 to 4; n represents a number of 5 to 500; x×n is in a range of 5 to 500; and a weight ratio of oxyethylene group EO contained in the oxyalkylene group AO having the number of carbons of 2 to 4 is 0 to 80 weight %.

Abstract: An alkylene oxide derivative represented by formula (1), wherein a ratio Mz/Mw of a weight average molecular weight (Mw) and z average molecular weight (Mz) calculated from a chromatogram obtained by gel permeation chromatography measurement of the alkylene oxide derivative satisfies formula (2) below: Z - [ O - ( P ? O ) a - ( P ? O ) b / ( E ? O ) ? ? c ] - H ] n ( 1 ) 5 ? M z / M w ? 60 ( 2 ) where Z, n, PO, EO, a, b and c are as defined herein; a+b+c?10, and b/c=1/5˜5/1; (PO)b/(EO)c indicates that PO and EO are randomly added; and a random ratio x of PO and EO satisfies 0.1?x?1.