Polyurethaneurea and spandex comprising same

A polyurethaneurea comprising the reaction product of:

• i. a polymeric glycol;
• ii. a diisocyanate composition comprising at least one Orthoalky-MDI selected from the group represented by Formula I:
• wherein:
• each R1 may be the same or different and are independently selected from the group consisting of hydrogen, methyl, ethyl, propyl and isopropyl;
• each R2 may be the same or different and are independently selected from the group consisting of hydrogen, methyl, ethyl, propyl and isopropyl;
• each X may be the same or different and are selected from the group consisting of hydrogen, fluorine, and chlorine;
• wherein the total amount of said at least one Orthoalkyl-MDI of Formula I is at least about 20 mole percent of said diisocyanate composition;
• and
• iii. a chain extender composition comprising at least one bulky diamine selected from the group consisting of:
• 2,2-dimethyl1.3-pentanediamine, 2,5-dimethyl-2,5-hexanediamine, 2,3,5,6-tetramethyl-1,4-diaminocyclohexane, and 2,5-dimethylpiperazine;
• and
• wherein the total amount of said at least one bulky diamine is at least about 80 mole percent of said chain extender composition;
• wherein said polyurethaneurea polymer is amide soluble.