Intrinsically gel-free, randomly branched polyamide

摘要

The invention relates to an intrinsically gel-free, randomly branched polyamide that is built up at least of units derived from AB monomers; at least one compound I, this being a dicarboxylic acid (A2); at least one compound II, this being a triamine (B3); and optionally a compound III, this being a monocarboxylic acid (A1), characterized in that the polyamide is also built up of units derived from at least one compound IV, this being a diamine (B2); and in that the relative amounts n of the said compounds satisfy the following relationships: $0<=\frac{n_{A1}}{n_{B3}}<=4$ $1<=\frac{n_{A2}}{n_{B3}}<=4$ $200<=\frac{n_{\mathrm{AB}}}{n_{B3}}<=2000$ $\frac{2}{5}<=\frac{n_{B2}}{n_{B3}}$ $0.996<={\stackrel{\_}{f}}_{nA}=\frac{n_{A1}+2n_{A2}+n_{\mathrm{AB}}}{n_{A1}+n_{A2}+n_{B2}+n_{B3}+n_{\mathrm{AB}}}<=1$ $0.98<={\stackrel{\_}{f}}_{nB}=\frac{2n_{\mathrm{B2}}+3n_{B3}+n_{\mathrm{AB}}}{n_{A1}+n_{A2}+n_{B2}+n_{B3}+n_{\mathrm{AB}}}<=1.004$ $2n_{B2}+3n_{B3}<=\frac{1}{400}n_{\mathrm{AB}}+3n_{A2}$