| abstract |
Biodegradable polyetheresteramides Q1 with a molecular weight (M n ) in the range from 6000 to 80,000 g/mol, a viscosity number in the range from 30 to 450 g/ml (measured in o-dichlorobenzene/phenol (50/50 ratio by weight) at a concentration of 0.5% by weight polyetheresteramide Q1 at 25° C.), and a melting point in the range from 50° to 200° C., obtained by reacting a1) from 95 to 99.9% by weight polyetheresteramide P1, obtained by reacting a mixture of n b1) 20-95 mol % adipic acid or ester-forming derivatives thereof, and n 5-80 mol % terephthalic acid or ester-forming derivatives thereof, and n b2) a mixture of a dihydroxy compound selected from C 2 -C 6 -alkanediols and C 5 -C 10 -cycloalkanediols, n b22) a dihydroxy compound which contains ether functionalities and has the formula I n n HO--((CH.sub.2).sub.n --O)).sub.m --H I n n where n is 2, 3 or 4 and m is an integer from 2 to 250, and n b23) from 0.5 to 80 mol % of an amino-C 2 -C 12 -alkanol or an amino-C 5 -C 10 -cycloalkanol, with or without n b24) a diamino-C 1 -C 8 -alkane, and/or n b25) a 2,2'-bisoxazoline n where the molar ratio of (b1) to (b2) is in the range from 0.4:1 to 1.5:1, and n a2) from 0.1 to 5% by weight of a divinyl ether C1. |