Waterborne polyurethane dispersion and method for preparing the same

A waterborne polyurethane dispersion comprising polyurethane particles dispersed in water, wherein the waterborne polyurethane dispersion is derived from:

• (A) an isocyanate component comprising one or more compounds having at least two isocyanate groups;
• (B) an isocyanate-reactive component comprising one or more compounds having at least two isocyanate-reactive groups;
• (C) a hydroxy-terminated siloxane compound represented by Formula I:
• wherein each of R1 and R4 independently represents a methylene optionally substituted with one or two substituents selected from the group consisting of C1-C5 alkyl, C1-C5 alkoxy, C6-C12 aryl, C6-C12 aryloxy and halogen;
• each of R2 and R3 independently represents a C1-C6 alkylene oxide group optionally substituted with one or more substituents selected from the group consisting of C1-C5 alkyl, C1-C5 alkoxy, C6-C12 aryl, C6-C12 aryloxy and halogen;
• each of R5, R6, R7, R8, R9 and R10 independently represents a C1-C5 alkyl optionally substituted with one or more substituents selected from the group consisting of C1-C5 alkyl, C1-C5 alkoxy, C6-C12 aryl, C6-C12 aryloxy and halogen;
• wherein each of a and e is independently an integer of 0 to 30;
• each of b and d is independently an integer of 5 to 30;
• and c is an integer of 3 to 100;
• (D) a catalyst;
• (E) an emulsifier;
• (F) a chain extender;
• and
• (G) water.