Copolyesters and fibrous materials formed therefrom

A fiber prepared from a copolyester having a dicarboxylic acid component and a diol component, the copolyester comprising repeat units of the following structures:

• [Brketopenst]O—(R11)—O—C(O)—(R13)—C(O)[Brketclosest]
• and
• [Brketopenst]O—(R12)—O—C(O)—(R14)—C(O)[Brketclosest]
• wherein R11 and R12 are selected from the group consisting of C2-C12 alkylene, C5-C10 cycloalkylene, C2-C12 oxyalkylene and mixtures thereof;
• wherein the dicarboxylic acid component contains an aliphatic dicarboxylic acid R13, and an aromatic or cycloaliphatic dicarboxylic acid component R14;
• wherein R13 is selected from the group consisting of C0-C10 alkylene or C2-C4 oxyalkylene and mixtures thereof, wherein the mole % of R13 ranges from about 45 to 95% of the dicarboxylic acid component;
• and R14 is selected from the group consisting of C6-C12 aryl and cycloaliphatic and mixtures thereof wherein the mole % of R14 is from about 5 to 55% of the dicarboxylic acid component;
• wherein the polyester is formed in the presence of 0 to about 20 mole % of at least one amine compound selected from the group consisting of aminoalcohols, aminoacids, diamines, lactams and mixtures thereof;
• wherein the copolyester has a melting point ranging from about 75° C. to about 160° C.;
• and wherein the fiber is in a form selected from the group consisting of melt blown, spunbond, spun fibers and mixtures thereof.