Chemical resistant pud for microfiber nonwoven leather application and the method
AssigneesDow Global Technologies LLC, Rohm and Haas Company
InventorsChao He, Yi Zhang, Zhaobui Qu, Chao Zhang, Xiangyang Tai
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Abstract
The present disclosure provides a polyurethane dispersion comprising a polyurethane prepolymer and an ionic surfactant. It further provides a microfiber nonwoven synthetic leather comprising a microfiber nonwoven fabric and the polyurethane dispersion. It further provides a method of preparing the microfiber nonwoven synthetic leather comprising a step of impregnating microfiber nonwoven fabrics into the polyurethane dispersion.
Claims11
A polyurethane dispersion comprising:
- a polyurethane prepolymer comprising, as polymerized units, by dry weight based on total dry weight of the polyurethane prepolymer, from 25% to 40%, a monomeric aromatic diisocyanate, and from 20% to 85%, a polyether polyol;
- and
- an ionic surfactant.
A microfiber nonwoven synthetic leather comprising a microfiber nonwoven fabric and a polyurethane dispersion, wherein the polyurethane dispersion comprises a polyurethane prepolymer and an ionic surfactant, wherein the polyurethane prepolymer comprises, as polymerized units, by dry weight based on total dry weight of the polyurethane prepolymer, from 25% to 40%, a monomeric aromatic diisocyanate, and from 20% to 85%, a polyether polyol.
Dependencies are inferred from the claim text.