Flame retardant thermoplastic resin composition
A polymer composition includes a rubber-modified aromatic vinyl resin and a cyclic phosphonate ester compound. Embodiments of the composition demonstrate good impact strength, flame retardancy, heat resistance. Some embodiments additionally demonstrate moisture resistance and low heat sag. A shaped article and an electronic device can be made from the flame retardant polymer composition.
1. A composition comprising:
about 100 parts by weight of a rubber-modified aromatic vinyl resin; and
about 0.1 to about 10 parts by weight of a cyclic alkyl phosphonate ester compound represented by the following Formula (I):
wherein R 1 , R 2 and R 4 are independently C 2 -C 10 alkyl group, R 3 is ethyl, m and n are independently 0, 1 or 2, and (m+n) is 1 or 2.
2. The composition of claim 1 , wherein m is 1 or 2.
3. The composition of claim 1 , wherein the composition is substantially free of polyphenylene ether resin.
4. The composition of claim 3 , wherein the composition has less than 4 parts by weight of a polyphenylene ether resin, based on 100 parts by weight of the rubber-modified aromatic vinyl resin.
5. The composition of claim 3 , wherein the composition has less than 2 parts by weight of the polyphenylene ether resin, based on 100 parts by weight of the rubber-modified aromatic vinyl resin.
6. The composition of claim 3 , wherein the composition has less than 1 parts by weight of the polyphenylene ether resin, based on 100 parts by weight of the rubber-modified aromatic vinyl resin.
7. The composition of claim 1 , wherein the rubber-modified aromatic vinyl resin comprises:
an aromatic vinyl graft copolymer resin; and
an aromatic vinyl copolymer resin, wherein the aromatic vinyl copolymer is not a graft copolymer resin.
8. The composition of claim 7 , wherein the aromatic vinyl graft copolymer resin is a graft copolymer of a rubber, an aromatic vinyl monomer, and a vinyl monomer.
9. The composition of claim 7 , wherein the aromatic vinyl copolymer resin is a copolymer of an aromatic vinyl monomer and a vinyl cyanide monomer.
10. The composition of claim 7 , wherein the aromatic vinyl copolymer is substantially free of a rubber polymer.
11. The composition of claim 1 , wherein the rubber modified aromatic vinyl resin is a mixture of g-ABS resin and SAN copolymer.
12. The composition of claim 1 , further comprising an aromatic phosphate ester.
13. The composition of claim 12 , wherein the aromatic phosphate ester is about 0 to about 20 parts by weight based on the rubber-modified aromatic vinyl resin and the polyphenylene ether resin totaling 100 parts by weight of the composition.
14. The composition of claim 1 , further comprising a thermoplastic resin.
15. The composition of claim 12 , wherein the aromatic phosphate ester is represented by the following Formula (II):
wherein each R is independently hydrogen or C 1-4 alkyl; X is derived from an aryl compound comprising at least two hydroxy groups; and n is 0 to 4.
16. The composition of claim 1 , wherein the composition is in the form a shaped article.
17. A composition comprising:
a rubber-modified aromatic vinyl resin; and
a cyclic alkyl phosphonate ester compound represented by the following Formula (I):
wherein R 1 , R 2 and R 4 are independently C 2 -C 10 alkyl group, R 3 is ethyl, m and n are independently 0, 1 or 2, and (m+n) is 1 or 2;
wherein the composition is substantially free of a polyphenylene ether resin.
18. A composition of claim 1 wherein R 3 is ethyl; m and n are independently 0, 1 or 2, and (m+n) is 1 or 2, and R 1 , R 2 and R 4 are independently C 2 -C 10 alkyl group when m=1 and R 1 , R 2 and R 4 are independently pentyl, hexyl, septyl, octyl, nonyl or decyl group when m=0 and n=1.
19. A composition of claim 1 wherein R 1 , R 2 and R 4 are independently butyl, pentyl, hexyl, septyl, octyl, nonyl or decyl group.
20. A composition comprising: a rubber-modified aromatic vinyl resin; and a cyclic alkyl phosphonate ester compound represented by the following Formula (I):
wherein R 3 is ethyl; m and n are independently 0, 1 or 2, and (m+n) is 1 or 2 and R 1 , R 2 and R 4 are independently C 2 -C 10 alkyl group when m=1 and R 1 , R 2 and R 4 are independently pentyl, hexyl, septyl, octyl, nonyl or decyl group when m=0 and n=1.