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.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a cross-sectional view illustrating the measurement of heat sag, which is the deformation length D (reported as heat sag in Tables 1 and 2) via bending of a test specimen in a constant temperature/humidity oven for the evaluation of degree of thermal deformation.
Claims
1. A composition, comprising:
about 100 parts by weight of a rubber-modified aromatic vinyl resin; andabout 0.1 to about 10 parts by weight of a cyclic alkyl phosphonate ester compound represented by the following Formula (I):
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; andan 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):
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; anda cyclic alkyl phosphonate ester compound represented by the following Formula (I):
18. An electronic device, comprising the composition of claim 1.
19. A method of making an electronic device, comprising:
providing an electrical circuit;providing a housing comprising a portion; andenclosing the electrical circuit with the housing;wherein the portion comprises the composition of claim 1.
Patent Application
20070155875
