OPHTHALMISCHE VORRICHTUNGEN, UMFASSEND AUS 2,2,4, 4-TETRAMETHYL-1.3-CYCLOBUTANDIOL UND 1,4- CYCLOHEXANDIMETHANOL GEBILDETE POLYESTERZUSAMMENSETZUNGEN

摘要

Described are polyester compositions comprising (a) a dicarboxylicacidcomponent comprising terephthalic acid residues; optionally, aromatic dicarboxylic acid or aliphatic dicarboxylic acid residues; 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues, wherein said 2,2,4,4-tetramethyl-1,3-cyclobutanediol contains certain cis to trans ratios; and 1,4-cyclohexanedimethanol residues.