Polyurethane resin, non-natural leather, and ink
A polyurethane resin includes a reaction product of a raw material component containing a polyisocyanate, a macropolyol, a hydrophilic group-containing polyol, and a chain extender. The polyisocyanate is an alicyclic polyisocyanate. The macropolyol contains a plant-derived macropolyol. A biomass degree of the reaction product is 30% or more.
1 . A polyurethane resin comprising a reaction product of a raw material component containing a polyisocyanate, a macropolyol, a hydrophilic group-containing polyol, and a chain extender, wherein:
the polyisocyanate consists of an alicyclic polyisocyanate;
the macropolyol contains a plant-derived polycarbonate polyol;
the chain extender contains
a diamine, and
a polyamine having three or more primary amino groups and/or secondary amino groups in one molecule; and
a biomass degree of the reaction product is 30% or more.
2 . The polyurethane resin according to claim 1 , wherein the alicyclic polyisocyanate contains a bis(isocyanatomethyl) cyclohexane.
3 . The polyurethane resin according to claim 1 , wherein the polyamine contains a diethylenetriamine.
4 . A non-natural leather comprising:
the polyurethane resin according to claim 1 .
5 . An ink comprising:
the polyurethane resin according to claim 1 .