Patent ID: 8680186

Claim:
A semi-crystalline polyolefin composition comprising: a thermoplastic crystallizable polyolefin; and one or more di-alkyl bis-oxalamide compounds having the formula: wherein R 1 is a spacer group and each R 2 is a peripheral group; wherein each of R 1 and R 2 a and R 2 b is an independently selected hydrocarbyl group devoid of aryl and substituted aryl; and wherein each of R 1 and R 2 is selected from the group consisting of: C 1 -C 20 alkyl; C 1 -C 20 alkyl substituted by C 1 -C 20 alkylamino, di(C 1 -C 20 alkyl)amino, C 1 -C 20 alkyloxy or hydroxy; (poly(C 2 -C 4 alkoxy))-(C 2 -C 4 alkyl); C 2 -C 20 alkenyl; C 3 -C 12 cycloalkyl; C 3 -C 12 cycloalkyl substituted by 1, 2 or 3 C 1 -C 20 alkyl; cyclohexylmethyl; cyclohexylmethyl substituted by 1, 2 or 3 C 1 -C 20 alkyl; C 3 -C 20 cycloalkenyl; C 3 -C 12 cycloalkenyl substituted by 1, 2 or 3 C 1 -C 20 alkyl; adamantyl; adamantyl substituted by C 1 -C 20 alkyl; and 5- or 6-membered heterocyclic groups.