| 摘要 |
<p>A clarifier for papers, characterized by comprising a water-compatible compound which is represented by the following general formula (1) and has a melting point of 40°C or higher: R0-(X1-(A-O)¿n-Z?1)m (1) wherein R0represents a C¿1-22? hydrocarbon group having a valence of m or an m-valent residue of a C6-12 heterocyclic alcohol; X?1¿ represents -O- or -COO-; A represents C¿2-4? alkylene; Z?1¿ represents hydrogen, acyl, a C¿1-22? monovalent hydrocarbon group, or -CONH-R?2¿; m is a number of 1 to 10; and n is a number satisfying the relationship 25 = n m = 700; provided that R2 is a C¿1-22? monovalent hydrocarbon group and that when m is 2, then R?0¿ may be a single bond.</p> |
