Synthetic leather
AssigneeDIC Corporation
InventorsYa-Yi Tseng, Ryo Maeda
Life of this patent
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Abstract
The present invention provides a synthetic leather including at least a substrate (i), an adhesive layer (ii), and a skin layer (iii), in which the adhesive layer (ii) and the skin layer (iii) are formed from respective specific urethane resin compositions. The adhesive layer (ii) is formed from a urethane resin composition including an anionic urethane resin (X) and water (Y). The skin layer (iii) is formed from a urethane resin composition including an anionic urethane resin (S) and water (T), in which the anionic urethane resin (S) is produced using, for example, a polycarbonate polyol (A-1) produced using biomass-derived decanediol.
Claims9
A synthetic leather, comprising at least:
- a substrate (i);
- an adhesive layer (ii);
- and
- a skin layer (iii), wherein
- the adhesive layer (ii) is formed from a urethane resin composition, the urethane resin composition including an anionic urethane resin (X) and water (Y),
- the anionic urethane resin (X) is produced using, as essential raw materials,
- a polyol (a) including a biomass-derived polycarbonate polyol (a1), wherein the biomass-derived polycarbonate polyol (a1) is produced using biomass-derived decanediol as a raw material,
- a polyisocyanate (b), and
- an alkanolamine (c),
- the skin layer (iii) is formed from a urethane resin composition, the urethane resin composition including an anionic urethane resin(S) and water (T), and
- the anionic urethane resin(S) is produced using, as raw materials,
- a polycarbonate polyol (A-1) produced using butanediol and biomass-derived decanediol as a raw material, and
- a polycarbonate polyol (A-2) produced using butanediol and a biomass-derived dihydroxy compound having a cyclic ether structure as a raw material,
- and wherein, a mass ratio of polycarbonate polyol (A-1) and polycarbonate polyol (A-2) is in the range of 98/2 to 90/10.
Dependencies are inferred from the claim text.