Halogen substituted phthalimide flame retardants

Halogen-substituted phthalimides of the formula:

• ##STR30## wherein (a) R is selected from ##STR31## wherein R.sup.1 is alkyl of 1-8 carbons, R.sup.2 and R.sup.3 are H or CH.sub.3 with the proviso that R.sup.2 and R.sup.3 are not the same, and R.sup.4 is alkyl of 1-12 carbons in which some of the carbons may be replaced by oxygen;
• ##STR32## where B is a trivalent alkyl group of 1-6 carbons, wherein B does not comprise a central carbon atom bonded to four other carbons, R.sup.5, R.sup.6, R.sup.7 and R.sup.8 are H or CH.sub.3 with the proviso that in the pairs R.sup.2 and R.sup.3, R.sup.5 and R.sup.6, and R.sup.7 and R.sup.8, both members are not the same;
• ##STR33## where R.sup.9 is alkyl of 1 to 10 carbons, aryl, or --(CH.sub.2).sub.f --, R.sup.10 and R.sup.11 may independently be H or CH.sub.3 with the proviso that R.sup.10 and R.sup.11 are not the same, b and c are independently 0 to 100, and d, e and f are independently 0 to 6;
• ##STR34## where R.sup.12, R.sup.13 and R.sup.14 are ##STR35## and g=1 to 1000 with the proviso that for each of R.sup.12, R.sup.13 and R.sup.14, g may or may not have the same value;
• ##STR36## where h=1 to 6;
• ##STR37## where j=1 to 500 and ##STR38## where k=0 to 30;
• (b) A is Cl or Br;
• (c) i is 1 to 4;
• (d) q is an integer of 1 to 6;
• (e) L=1 to 2;
• (f) m and n independently vary from 0 to 50 with the proviso that both cannot be zero;
• and
• (g) v, w, x, y, z and a independently vary from 0 to 25 with the proviso that for each of the pairs, v and w, x and y, and z and a, both members cannot be zero.