The invention provides a thermally reversible crosslinked matter, which displays a sufficiently low melt viscosity during heating and is also excellent in the stability of the melt viscosity, and further provides a hot melt resin comprising this crosslinked matter. The thermally reversible crosslinked matter comprises a compound (A)-based moiety and a compound (B)-based moiety, wherein both moieties are bonded to each other through a crosslinked structure, which is characterized in that: the crosslinked structure includes a structure making steric hindrance, and breaks due to heating and then reverts due to cooling; and when the crosslinked structure breaks due to heating, the melt viscosity of the thermally reversible crosslinked matter decreases to not higher than twice the melt viscosity of compound (A) alone or the melt viscosity of compound (B) alone, whichever is higher, as heated at the same temperature that the thermally reversible crosslinked matter is heated at.
本发明提供了一种热可逆交联物质,它在加热过程中显示出足够低的熔体粘度,并且熔体粘度的稳定性也非常好,本发明还提供了一种包含这种交联物质的热熔
树脂。该热可逆交联物质包括一个以化合物(A)为基础的分子和一个以化合物(B)为基础的分子,其中这两个分子通过交联结构相互粘合,其特征在于:交联结构包括一个产生立体阻碍的结构,并由于加热而断裂,然后由于冷却而恢复;当交联结构由于加热而断裂时,热可逆交联物质的熔体粘度降低到不高于化合物(A)单独的熔体粘度或化合物(B)单独的熔体粘度的两倍,以较高者为准,加热温度与热可逆交联物质的加热温度相同。