| abstract |
A polymer comprising:n a copolyester comprising glycol subunits and carboxylate subunits; nwherein the glycol subunits are derived from 85 to 99.99 mol% C2-C4 diols and 0.01 to 5nmol% branching monomer molecules; and nthe carboxylate subunits are derived from 5 to 95 mol% cyclohexane dicarboxylic acid ornlower alkyl esters thereof and 5 to 95 mol% tertiary-butyl isophthalic acid or lower alkyl estersnthereof. |