Flame resistant polyamide moulding compositions

A flame-proofed transparent polyamide molding composition containing essentiall of

• A. a polyamide which is a condensation product of
• a.sub.1. 5 to 50 mol % of one or more diamines selected from 1,3-bis-(aminomethyl)-cyclohexane;
• 1,4-bis-(aminomethyl)-cyclohexane;
• 2,5-bis-(aminomethyl)-bicyclo-[2,2,1]-heptane;
• 2,6-bis(aminomethyl)-bicyclo-[2,2,1]-heptane;
• bis-(4-aminocyclohexyl) derivative of an alkane having from 1 to 6 carbon atoms;
• and m-xylylenediamine, provided that up to 50 mol % of the m-xylylenediamine may be substituted by p-xylylene diamine,
• a.sub.2. 0 to 45 mol % of one or more diamines selected from straight chain and branched aliphatic diamines containing from 4 to 20 atoms, the amino groups being separated from one another by at least 4 carbon atoms,
• b.sub.1. 5 to 50 mol % of a diacid selected from aromatic dicarboxylic acids having from 7 to 20 carbon atoms and containing carboxyl groups in meta- or para-position,
• b.sub.2. 0 to 45 mol % of a diacid selected from saturated, straight chain and branched aliphatic dicarboxylic acids having from 6 to 20 carbon atoms, the carboxyl groups of which are separated from one another by at least 4 carbon atoms and
• c. 0 to 80 mol % of at least one aliphatic aminocarboxylic acid having from 2 to 20 carbon atoms, on their lactams,
• the sum of the mol percentages of the components (a.sub.1) and (a.sub.2) equaling that of the components (b.sub.1) and (b.sub.2), the sum of the mol percentages of all components (a.sub.1), (a.sub.2), (b.sub.1), (b.sub.2) and (c) being 100,
• the sum of the percentages of the components (a.sub.1) and (b.sub.1) being in the range of from 20 to 95, the sum of the mol percentages of the components (a.sub.2), (b.sub.2) and (c) being in the range of from 5 to 80, and all mol percentages being calculated on the sum of all components (a.sub.1), (a.sub.2), (b.sub.1), (b.sub.2) and (c),
• B. from 3% to 40% by weight, based on the weight of polyamide of at least one phosphinylphosphinic acid of the formula ##STR19## wherein R is selected from saturated open chain, branched and cyclic alkyl radicals having from 1 to 16 carbon atoms and aryl and aralkyl radicals having from 6 to 16 carbon atoms,
• R.sub.1 is selected from alkylene groups having from 1 to 8 carbon atoms and arylene groups, and
• n is 1 to 3.