Self-extinguishing polymeric compositions

Claim 1

Polymeric self-extinguishing compositions comprising: (a) from 89 to 45 parts by weight of a thermoplastic polymer, or of a polymer endowed with elastomeric properties; (b) from 8 to 30 parts by weight of one or more ammonium or amine phosphate(s) and/or phosphonate(s); (c) from 3 to 25 parts by weight of one or more compound(s) derivatives of 2,4,6-triamino-1,3,5-triazine, having the formula (I): ##STR109## wherein the radicals from R to R 3 , which can be either equal to or different from one another, and can have different meanings in each triazinic ring are: H; (C 1 -C 18 )-alkyl; (C 2 -C 8 )-alkenyl; (C 6 -C 16 )-cycloalkyl or -alkylcycloalkyl, optionally substituted with a hydroxy or (C 1 -C 4 )-hydroxyalkyl function; ##STR110## wherein: n=an integer within the range of from 2 to 8; m=an integer within the range of from 2 to 6; R 5 =H; (C 1 -C 8 )-alkyl; (C 2 -C 6 )-alkenyl; --C p H 2p --O--R 7 ; wherein p is an integer within the range of from 1 to 4 and R 7 is either H or a (C 1 -C 4 )-alkyl; (C 6 -C 12 )-cycloalkyl or -alkylcycloalkyl; the radicals R 6 , which can be either equal to, or different from, one another, are: H; (C 1 -C 8 )-alkyl; (C 2 -C 6 )-alkenyl; (C 6 -C 12 )-cycloalkyl or -alkylcycloalkyl; (C 1 -C 4 )-hydroxyalkyl; or the moiety: ##STR111## is replaced by a heterocyclic radical linked to the alkyl chain through the nitrogen atom and possibly containing another heteroatom; or in formula (I) at least one of the moieties ##STR112## is replaced by a heterocyclic radical linked to the triazinic ring through the nitrogen atom and optionally containing another heteroatom; a is either 0 or 1; b is 0 or an integer within the range of from 1 to 5; R 4 is hydrogen or: R 4 is hydrogen or: ##STR113## and its meaning can vary inside each repeating unit; when b is zero, Z is a divalent radical comprised in one of the following formulas: ##STR114## where radicals R 8 , like or different from one another, are hydrogen or (C 1 -C 4 )-alkyl; ##STR115## where r is an integer comprised within the range of from 2 to 14; R 9 is hydrogen; (C 1 -C 4 )-alkyl; (C 2 -C 6 )-alkenyl; (C 1 -C 4 )-hydroxyalkyl; ##STR116## where s is an integer within the range of from 2 to 5 and t is an integer within the range of from 1 to 3; ##STR117## where: X is a direct bond C--C; O; S; S--S; SO; SO 2 ; NH; NHSO 2 ; NHCO; N═N; CH 2 ; R 10 is hydrogen; hydroxyl; (C 1 -C 4 )-alkyl; (C 1 -C 4 )-alkoxyl; ##STR118## where A can be a saturated or unsaturated cycle; ##STR119## where s has the hereinabove defined meaning; when b is an integer within the range of from 1 to 5, the group: ##STR120## is a polyvalent radical comprised in one of the following formulas: ##STR121## where: R 11 is either hydrogen or (C 1 -C 4 )-alkyl; c is an integer within the range of from 1 to 5; the indexes s, which can be either equal to or different from each other, have the hereinabove defined meaning; ##STR122## where: R 11 has the hereinabove defined meaning; w is an integer within the range of from 2 to 4; d is either 1 or 2.