Stereolithographic method and composition

Method for producing a three-dimensional object by stereolithography wherein a liquid photocurable resin composition is cured by light, said photocurable resin composition containing:

• (i) from 90 to 99.9% by weight, based on the total weight of the photocurable resin composition, of a radical polymerizable organic compound (A) selected from radical polymerizable monomers, oligomers, pre-polymers and mixtures thereof;
• (ii) from 0.1 to 10% by weight, based on the total weight of the photocurable resin composition, of a photosensitive radical polymerization initiator (B);
• wherein said radical polymerizable organic compound (A) comprises, based on the weight of the radical polymerizable organic compound (A), from 0.5 to 20% by weight of a polyrotaxane compound having the following general formula (I):
• wherein
• Z is a bulky capping group;
• the dotted ------ line is a polymer chain selected from the group consisting of polyethylene glycol (PEG), polypropylene glycol (PPG), polyethylene glycol-polypropylene glycol (PEG-PPG) block copolymer or polydimethylsiloxane (PDMS), onto which at least one cyclodextrin ring is slipped;
• m is an integer and independently represents the number of glucose units in the at least one cyclodextrin ring;
• n is an integer and represents the number of cyclodextrin rings;
• X is independently H, or a radical polymerizable group, selected from:
• a methacryloyl-containing group or an acryloyl-containing group, with the condition that at least one X is a radical polymerizable group.