Abstract: An additive composition comprises one or more calcium cis-1,2-cyclohexanedicarboxylate salts. The calcium 1,2-cyclohexanedicarboxylate salts have a BET specific surface area of 20 m2/g or more. A method for producing a thermoplastic polymer composition entails mixing the additive composition with a thermoplastic polymer, melting the resulting admixture, and letting the admixture solidify to produce a polymer composition.

Abstract: An additive composition comprises one or more calcium cis-1,2-cyclohexanedicarboxylate salts. 25 mol. % or more of the calcium cis-1,2-cyclohexanedicarboxylate salts present in the additive composition are calcium cis-1,2-cyclohexanedicarboxylate monohydrate. The additive composition has a gravimetric water content of about 20% or less. A method for producing a thermoplastic polymer composition entails mixing the additive composition with a thermoplastic polymer, melting the resulting admixture, and letting the admixture solidify to produce a polymer composition.

Abstract: A 3-phenyl-3H-1-benzofuran-2-one compound is substituted with one or more acyloxy groups comprising 26 or more carbon atoms. A compound comprises two or more 3-phenyl-3H-1-benzofuran-2-one moieties and a second moiety selected from the group consisting of divalent and polyvalent C4-C60 hydrocarbon moieties. Each 3-phenyl-3H-1-benzofuran-2-one moiety is covalently bound to an open valence of the second moiety through a linking group selected from the group consisting of a carboxy group and oxyalkylene ester moieties. A composition comprises the 3-phenyl-3H-1-benzofuran-2-one compound described above or the compound described above comprising two or more 3-phenyl-3H-1-benzofuran-2-one moieties.