Solid alkylaryl phosphite compositions and methods for manufacturing same
View Patent ↗The invention is directed to various alkylaryl phosphite compositions that ideally are suitable for use as secondary antioxidants in polymers. In one aspect, the phosphite composition comprises a tris(monoalkylaryl)phosphite in an amount from 51 to 95 weight percent; and at least one of: a bis(monoalkylaryl)dialkylaryl phosphite; a bis(dialkylaryl)monoalkylaryl phosphite; and a tris(dialkylaryl)phosphite. The inventive phosphite composition is a solid at ambient conditions. The invention also relates to alkylate compositions and processes for forming such alkylate compositions and such phosphite compositions.
1. A phosphite composition, comprising:
(a) tris(4-t-butylphenyl)phosphite or tris(4-t-amylphenyl) phosphite in an amount from 51 to 95 weight percent; and
at least one of:
(b) bis(4-t-butylphenyl)(2,4-di-t-butylphenyl) phosphite or bis(4-t-amylphenyl)(2,4-di-t-butylamylphenyl)phosphite;
(c) bis(2,4-di-t-butylphenyl)(4-t-butylphenyl) phosphite or bis(2,4-di-t-amylphenyl)(4-t-butylamylphenyl)phosphite; or
(d) tris(2,4-di-t-butylphenyl)phosphite or tris(2,4-di-t-amylphenyl)phosphite,
wherein the composition comprises components (b), (c) and (d) in combination in an amount from 5 to 49 weight percent, based on the total weight of all phosphites in the composition, and wherein the composition is a solid at ambient conditions with a melting range greater than 25° C.
2. The phosphite composition according to claim 1 , comprising (a) and at least one of (c) or (d).
3. The phosphite composition according to claim 1 , comprising (a) and (d).
4. The phosphite composition according to claim 1 , further comprising an amine of formula V:
wherein x is 1, 2 or 3; R 8 is selected from the group consisting of hydrogen, and straight or branched C 1-6 alkyl, and R 9 is selected from the group consisting of straight or branched C 1 -C 30 alkyl.
5. The phosphite composition according to claim 1 , wherein the phosphite composition has a phosphorous content of from 5.5 to 6.5 mol %.
6. A phosphite composition according to claim 5 comprising:
(a) tris(4-t-butylphenyl)phosphite in an amount from 51 to 95 weight percent; and
at least one of:
(b) bis(4-t-butylphenyl)(2,4-di-t-butylphenyl)phosphite;
(c) bis(2,4-di-t-butylphenyl)(4-t-butylphenyl)phosphite; or
(d) tris(2,4-di-t-butylphenyl)phosphite.
7. A phosphite composition according to claim 5 comprising:
(a) tris(4-di-t-amylphenyl)phosphite in an amount from 51 to 95 weight percent; and
at least one of:
(b) bis(4-t-amylphenyl)(2,4-di-t-butylamylphenyl)phosphite;
(c) bis(2,4-di-t-amylphenyl)(4-t-butylamylphenyl)phosphite; or
(d) tris(2,4-di-t-amylphenyl)phosphite.
8. A stabilized polymeric composition, comprising:
(a) a polymer; and
(b) the phosphite composition of claim 1 .
9. The stabilized polymeric composition according to claim 8 wherein the polymer comprises a polyolefin homopolymer, polyolefin copolymer, rubber, polyester, polyurethane, polyalkylene terephthalate, polysulfone, polyimide, polyphenylene ether, styrenic polymer, styrenic copolymer, polycarbonate, acrylic polymer, polyamide, polyacetal, halide-containing polymer or biodegradable polymer, or a blend thereof, and wherein the phosphite composition is present in an amount of from 0.001 to 5 wt % based on the total weight of the polymer composition.
10. The stabilized polymeric composition according to claim 9 wherein the polymer comprises a polyolefin homopolymer, polyolefin copolymer, polyester, polyurethane, polyalkylene terephthalate, styrenic polymer, styrenic copolymer, polycarbonate, acrylic polymer, polyamide, polyacetal, halide-containing polymer.
11. The stabilized polymeric composition according to claim 9 wherein the phosphite composition comprises tris(4-t-butylphenyl)phosphite and at least one of bis(4-t-butylphenyl)(2,4-di-t-butylphenyl)phosphite; bis(2,4-di-t-butylphenyl)(4-t-butylphenyl)phosphite; or tris(2,4-di-t-butylphenyl)phosphite.
12. The stabilized polymeric composition according to claim 9 wherein the phosphite composition comprises tris(4-t-butylphenyl)phosphite and at least one of bis(2,4-di-t-butylphenyl)(4-t-butylphenyl)phosphite; or tris(2,4-di-t-butylphenyl)phosphite.
13. The stabilized polymeric composition according to claim 9 wherein the phosphite composition comprises tris(4-t-butylphenyl)phosphite and tris(2,4-di-t-butylphenyl)phosphite.
14. The stabilized polymeric composition according to claim 9 wherein the phosphite composition comprises tris(4-t-amylphenyl)phosphite and at least one of bis(4-t-amylphenyl)(2,4-di-t-amylphenyl)phosphite; bis(2,4-di-t-amylphenyl)(4-t-amylphenyl)phosphite; or tris(2,4-di-t-amylphenyl)phosphite.
15. The stabilized polymeric composition according to claim 9 wherein the phosphite composition comprises tris(4-t-amylphenyl)phosphite and at least one of bis(2,4-di-t-amylphenyl)(4-t-amylphenyl)phosphite; or tris(2,4-di-t-amylphenyl)phosphite.
16. The stabilized polymeric composition according to claim 9 wherein the phosphite composition comprises tris(4-t-amylphenyl)phosphite and tris(2,4-di-t-amylphenyl)phosphite.
17. The stabilized polymeric composition according to claim 9 wherein the polymer comprises a blend comprising a polyphenylene ether, polystyrene, polyvinyl chloride.
18. The stabilized polymeric composition according to claim 17 wherein the polymer comprises ABS, methacrylonitrile/ABS, α-methylstyrene/ABS, polyester/ABS or polycarbonate/ABS.
19. The stabilized polymeric composition according to claim 17 wherein the polymer comprises a thermoplastic polymer comprising a polyolefin homopolymer, polyolefin copolymer, polycarbonate, polyester, polyphenylene ether, polystyrene homo polymer, or polystyrene copolymer.
20. The stabilized polymeric composition according to claim 19 wherein the polymer comprises a polyolefin homopolymer, polyolefin copolymer, polystyrene homo polymer, or polystyrene copolymer.