Foam sheet and synthetic leather
AssigneeDIC Corporation
InventorsMiwa Ueguchi, Tomohiro Tetsui
Life of this patent
Estimating the term…
Abstract
A task to be achieved by the invention is to provide a foamed sheet having excellent retention of foam, hand feeling, and peel strength. The present invention provides a foamed sheet which is formed from a water dispersion of a urethane resin (X), wherein the water dispersion has a urethane resin (X) content of 50 to 80% by mass, and the water dispersion contains no organic solvent. Further, the present invention provides a synthetic leather having at least a substrate (i) and a polyurethane layer (ii), wherein the polyurethane layer (ii) is formed from the above-mentioned foamed sheet. The foamed sheet preferably has a density of 200 to 1,000 kg/m3.
Claims14
A foamed sheet which is formed from a water dispersion of a urethane resin (X),
- wherein the urethane resin (X) has a nonionic group,
- wherein the urethane resin (X) uses a compound (a4) having a hydrophilic group as a raw material,
- wherein the amount of the compound (a4) used is 0.25 to 5% by mass or less, based on the total mass of the raw materials constituting the urethane resin (X),
- wherein the water dispersion has a urethane resin (X) content of 50 to 80% by mass, and the water dispersion contains no organic solvent.
Dependencies are inferred from the claim text.