Patent ID: 8163843

Claim:
A crystalline pelletizable copolyester, comprising 20 to 50 mol % of terephthalic acid, 20 to 50 mol % of isophthalic acid and/or phthalic acid, 10 to 30 mol % of a linear aliphatic dicarboxylic acid having 9 to 20 carbon atoms, 1 to 20 mol % of dimer fatty acid, the sum of polycarboxylic acids being 100 mol %; and one or more glycols, which can be dissolved with a solids content of at least 30% by weight in non-halogenated and non-aromatic solvents, wherein said copolyester has a molar mass (Mw) of 25 000 to 70 000 g/mol.