Patent ID: 6306941
Filing Date: 2001-10-23
Classification: C08K

Abstract:
A thermoplastic molding composition comprisingA) from 5 to 97% by weight of a thermoplastic polymer selected from the group consisting of polyamides and mixtures of these,B) from 1 to 30% by weight of an alkylphosphonic acid compound of the formula I ##STR8##where R is alkyl having from 1 to 4 carbon atoms and x is 0 or 1,C) from 1 to 30% by weight of a mixture ofc.sub.1) a magnesium calcium carbonate of formulaMg.sub.x Ca.sub.y (CO.sub.3).sub.x+y.m H.sub.2 O,where x and y are numbers from 1 to 5 and x/y.gtoreq.1 and m.gtoreq.0, andc.sub.2) a basic magnesium carbonate of formulaMg.sub.n (CO.sub.3).sub.v (OH).sub.2n-2v.w H.sub.2 O,where n is a number from 1 to 6, v is a number greater than 0 and smaller than 6 and n/v>1 and w.gtoreq.0,having a c.sub.1):c.sub.2) mixing ratio of from 1:1 to 3:1,D) from 1 to 50% by weight of a fibrous filler andE) from 0 to 40% by weight of other additives and processing aids,where the sum of the percentages by weight of components A) to E) is always 100%.