| abstract |
Provided are a photocrosslinkable polyrotaxane having scratch resistance, low hysteresis loss, and the like, a composition having the photocrosslinkable polyrotaxane, a crosslinked product from the composition, and a method for producing the same. A cyclic molecule of polyrotaxane in which a blocking group is arranged at both ends of a pseudopolyrotaxane in which an opening of a cyclic molecule is clasped by a linear molecule so that the cyclic molecule is not detached is- MY (M is represented by the following formula II, X represents a linear alkylene group having 1 to 8 carbon atoms, etc., n is an average value of 1 to 10, and Y has a photopolymerizable group. The above-mentioned problems are solved by a photocrosslinkable polyrotaxane having a group represented by (a group), a composition having the photocrosslinkable polyrotaxane, a crosslinked product derived from the composition, and a production method thereof. [Chemical 1] [Selection figure] None |