Polyester compositions which comprise spiro-glycol, cyclohexanedimethanol, and terephthalic acid

摘要

Described as one aspect of the invention are polyester compositions comprising at least one polyester which comprises:
(a) a dicarboxylic acid component comprising:
(i) about 80 to about 100 mole % of terephthalic acid residues;(ii) about 0 to about 20 mole % of aromatic and/or aliphatic dicarboxylic acid residues having up to 20 carbon atoms; and(b) a glycol component comprising:
(i) about 1 to about 49 mole % spiro-glycol residues; and(ii) about 51 to about 99 mole % at least one glycol chosen from at least one of 1,4-cyclohexanedimethanol residues and 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues;

wherein the total mole % of the dicarboxylic acid component is 100 mole %, and wherein the total mole % of the glycol component is 100 mole %.

主权项

1. A polyester composition comprising at least one polyester which comprises:
(a) a dicarboxylic acid component comprising:
(i) about 80 to about 100 mole % of terephthalic acid residues;(ii) about 0 to about 20 mole % of aromatic and/or aliphatic dicarboxylic acid residues having up to 20 carbon atoms; and (b) a glycol component comprsing:
(i) about 1 to about 49 mole % of spiro-glycol residues; and(ii) about 51 to about 99 mole % of at least one glycol chosen from at least one of 1,4-cyclohexanedimethanol residues and 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues; wherein the total mole % of the dicarboxylic acid component is 100 mole %, wherein the total mole % of the glycol component is 100 mole %, and wherein the molecular weight distribution of the polyester is less than or equal to 2.