초록 ▼

The present invention is a blend of a thermoplastic engineering resin and an interpolymer of, on one embodiment, a C4 to C7 isomonoolefin, a para-methylstyrene and a para-(halomethylstyrene), the interpolymer having been pre-mixed with an exfoliated-clay, the entire blend forming a nanocomposite. Th

The present invention is a blend of a thermoplastic engineering resin and an interpolymer of, on one embodiment, a C4 to C7 isomonoolefin, a para-methylstyrene and a para-(halomethylstyrene), the interpolymer having been pre-mixed with an exfoliated-clay, the entire blend forming a nanocomposite. The resin may or may not have a clay present prior to blending with the interpolymer. The interpolymer/clay mixture forms a distinct phase in the nanocomposite blend of the invention. The blend of the invention has improved air barrier properties and is suitable as an air barrier.

대표청구항 ▼

We claim: 1. A nanocomposite comprising at least a first and second phase prepared by a method comprising forming the first and second phases, and blending the first and second phases, the first phase comprising a mixture of an interpolymer comprising C4 to C7 isomonoolefin derived units, para-meth

We claim: 1. A nanocomposite comprising at least a first and second phase prepared by a method comprising forming the first and second phases, and blending the first and second phases, the first phase comprising a mixture of an interpolymer comprising C4 to C7 isomonoolefin derived units, para-methylstyrene derived units and para-(halomethylstyrene) derived units with an alkylamine-exfoliated or an alkylammonium-exfoliated clay; the second phase comprising at least one thermoplastic engineering resin containing an alkylamine-exfoliated or an alkylammonium-exfoliated clay. 2. The nanocomposite of claim 1, wherein the thermoplastic resin is selected from the group consisting of polyamides, polyimides, polyesters, polycarbonates, polysulfones, polylactones, polyacetals, acrylonitrile/butadiene/styrene copolymer resins, polyphenylene oxides, polyphenylene sulfides, polystyrene, styrene/acrylonitrile copolymer resins, styrene/maleic anhydride copolymer resins, aromatic polyketones and mixtures thereof. 3. The nanocomposite of claim 1, wherein the interpolymer is present in the nanocomposite from 10 to 40 wt % based on the weight of the nanocomposite. 4. The nanocomposite of claim 1, wherein the thermoplastic engineering resin is present in the nanocomposite from 30 to 90 wt % based on the weight of the nanocomposite. 5. The nanocomposite of claim 1, wherein the alkylammonium-exfoliated clay in the first phase is a di-methyl tallowalkyl octyl ammonium methyl sulfate-exfoliated clay. 6. The nanocomposite of claim 1, wherein the alkylamine-exfoliated or alkylammonium-exfoliated clay is present in the nanocomposite from 0.5 to 10 wt % based on the weight of the nanocomposite. 7. The nanocomposite of claim 1, wherein the alkylammonium-exfoliated clay in the first phase is a di-methyl di-hydrogenated tallow alkyl ammonium chloride-exfoliated clay. 8. The nanocomposite of claim 1, further comprising curing agents. 9. The nanocomposite of claim 8, wherein the curing agents are selected from the group consisting of zinc, zinc stearate, stearic acid, sulfur, and mixtures thereof. 10. The nanocomposite of claim 1, wherein the nanocomposite is a dispersion of particles, wherein the number average size of the particles in the dispersion as measured by AFM is from 0.30 to 0.65 microns. 11. The nanocomposite of claim 1, wherein the oxygen permeability of the nanocomposite is less than 2.0 ��10-8 cc-mil/m2-day-mmHg. 12. A tire innerliner comprising the nanocomposite of claim 1. 13. The nanocomposite of claim 1 wherein the first phase comprises the alkylammonium-exfoliated clay. 14. The nanocomposite of claim 1 wherein the second phase comprises the alkylamine-exfoliated clay. 15. The nanocomposite of claim 13 wherein the second phase comprises the alkylamine-exfoliated clay. 16. A nanocomposite comprising at least two phases, wherein: a) one phase comprises an alkylamine-exfoliated or an alkylammonium-exfoliated clay and at least one thermoplastic engineering resin; and b) another phase comprises a blend of an alkylamine-exfoliated or an alkylammonium-exfoliated clay and an interpolymer of a C4 to C7 isomonoolefin containing up to 20 mole % of the following aromatic monomer units randomly spaced along the polymer chain: wherein R and R1 are independently hydrogen, C1 to C4 alkyl or primary or secondary alkyl halides and X is hydrogen, or a functional group selected from the group consisting of halogens; carboxylic acids; carboxy salts; carboxy esters, amides and imides; hydroxy; alkoxide; phenoxide; thiolate; thioether; xanthate; cyanide; cyanate; amino and mixtures thereof; wherein the nanocomposite is made by a method comprising blending the alkylamine-exfoliated or alkylammonium-exfoliated clay-containing thermoplastic resin phase with the alkylamine-exfoliated or alkylammonium-exfoliated clay-containing interpolymer phase. 17. The nanocomposite of claim 16, wherein the thermoplastic resin is selected from the group consisting of polyamides, polyimides, polyesters, polycarbonates, polysulfones, polylactones, polyacetals, acrylonitrile/butadiene/styrene copolymer resins, polyphenylene oxides, polyphenylene sulfides, polystyrene, styrene/acrylonitrile copolymer resins, styrene/maleic anhydride copolymer resins, aromatic polyketones and mixtures thereof. 18. The nanocomposite of claim 16, wherein the interpolymer is present in the nanocomposite from 10 to 40 wt % based on the weight of the nanocomposite. 19. The nanocomposite of claim 16, wherein the thermoplastic engineering resin is present in the nanocomposite from 30 to 90 wt % based on the weight of the nanocompo site. 20. The nanocomposite of claim 16, wherein the alkylammonium-exfoliated clay in the interpolymer phase is a di-methyl tallowalkyl octyl ammonium methyl sulfate-exfoliated clay. 21. The nanocomposite of claim 16, wherein the alkylamine-exfoliated or alkylammonium-exfoliated clay is present in the nanocomposite from 0.5 to 10 wt % based on the weight of the nanocomposite. 22. The nanocomposite of claim 16, wherein the alkylammonium-exfoliated clay in the interpolymer phase is a di-methyl di-hydrogenated tallow alkyl ammonium chloride-exfoliated clay. 23. The nanocomposite of claim 16, also comprising curing agents. 24. The nanocomposite of claim 23, wherein the curing agents are selected from the group consisting of zinc, zinc stearate, stearic acid, sulfur, and mixtures thereof. 25. The nanocomposite of claim 16, wherein the nanocomposite is a dispersion of particles, wherein the number average size of the particles in the dispersion as measured by AFM is from 0.30 to 0.65 microns. 26. The nanocomposite of claim 16, wherein the oxygen permeability of the nanocomposite is less than 2.0 ��10-8 c-mil/m2-day-mmHg. 27. A tire innerliner comprising the nanocomposite of claim 16. 28. The nanocomposite of claim 16 wherein the thermoplastic resin phase comprises the alkylammonium-exfoliated clay. 29. The nanocomposite of claim 16 wherein the interpolymer phase comprises the alkylamine-exfoliated clay. 30. The nanocomposite of claim 28 wherein the interpolymer phase comprises the alkylamine-exfoliated clay. 31. A method of forming a nanocomposite comprising forming a first phase of an alkylamine-exfoliated or an alkylammonium-exfoliated clay and an interpolymer of C4 to C7 isomonoolefin derived units, para-methylstyrene derived units and para-(halomethylstyrene) derived units; and blending the first phase with at least a second phase comprising a thermoplastic engineering resin also including an alkylamine-exfoliated or an alkylammonium-exfoliated clay. 32. The method of claim 31, wherein the thermoplastic resin is selected from the group consisting of polyamides, polyimides, polyesters, polycarbonates, polysulfones, polylactones, polyacetals, acrylonitrile/butadiene/styrene copolymer resins, polyphenylene oxides, polyphenylene sulfides, polystyrene, styrene/acrylonitrile copolymer resins, styrene/maleic anhydride copolymer resins, aromatic polyketones and mixtures thereof. 33. The method of claim 31, wherein the interpolymer is present in the nanocomposite from 10 to 40 wt % based on the weight of the nanocomposite. 34. The method of claim 31, wherein the thermoplastic engineering resin is present in the nanocomposite from 30 to 90 wt % based on the weight of the nanocomposite. 35. The method of claim 33, wherein the alkylammonium-exfoliated clay in the first phase is a di-methyl tallowalkyl octyl ammonium methyl sulfate-exfoliated. 36. The method of claim 33, wherein the alkylamine-exfoliated or alkylammonium-exfoliated clay is present in the nanocomposite from 0.5 to 10 wt % based on the weight of the nanocomposite. 37. The method of claim 31, wherein the alkylammonium-exfoliated clay in the first phase is a di-methyl di-hydrogenated tallow alkyl ammonium chloride-exfoliated clay. 38. The method of claim 31, also comprising blending a curing agent with the first and second phases. 39. The method of claim 38, wherein the curing agent is selected from the group consisting of zinc, zinc stearate, stearic acid, sulfur, and mixtures thereof. 40. A tire innerliner comprising the nanocomposite obtained by curing the composition obtained from the method of claim 38. 41. The method of claim 31 wherein the first phase comprises the alkylammonium-exfoliated clay. 42. The method of claim 31 wherein the second phase comprises the alkylamine-exfoliated clay. 43. The method of claim 41 wherein the second phase comprises the alkylamine-exfoliated clay.