An embodiment of the present invention is a nanocomposite comprising a clay and an elastomer comprising at least C2 to C10 olefin derived units; wherein the elastomer also comprises functionalized monomer units pendant to the elastomer. Desirable embodiments of the elastomer include poly(isobutylene
An embodiment of the present invention is a nanocomposite comprising a clay and an elastomer comprising at least C2 to C10 olefin derived units; wherein the elastomer also comprises functionalized monomer units pendant to the elastomer. Desirable embodiments of the elastomer include poly(isobutylene-co-p-alkylstyrene) elastomers and poly(isobutylene-co-isoprene) elastomers, which are functionalized by reacting free radical generating agents and unsaturated carboxylic acids, unsaturated esters, unsaturated imides, and the like, with the elastomer. The clay is exfoliated in one embodiment by the addition of exfoliating agents such as alkyl amines and silanes to the clay. The composition can include secondary rubbers such as general purpose rubbers, and curatives, fillers, and the like. The nanocomposites of the invention have improved air barrier properties such as are useful for tire innerliners and innertubes.
대표청구항▼
1. A curable elastomeric nanocomposite consisting of a swellable clay and a nonhalogenated elastomer having a viscosity average molecular weight in the range of 200,000 to 2,000,000, the nonhalogenated elastomer comprising C2 to C10 olefin derived units and styrenic derived units and/or substituted
1. A curable elastomeric nanocomposite consisting of a swellable clay and a nonhalogenated elastomer having a viscosity average molecular weight in the range of 200,000 to 2,000,000, the nonhalogenated elastomer comprising C2 to C10 olefin derived units and styrenic derived units and/or substituted styrenic derived units, wherein all the styrenic derived units are present from 1 to 15 wt % of the elastomer; wherein the elastomer also comprises functionalized monomer units having functional groups pendant to the elastomer, E, selected from the following: wherein R2 and R2′ are the same or different and are selected from the group consisting of hydrogen, C1 to C20 alkyls, alkenyls or aryls, substituted C1 to C20 alkyls, alkenyls or aryls, hydroxyl and C1 to C20 alkoxys; and wherein R3 and R4 are the same or different and is —OR5 or —NHR5, wherein R5 is selected from the group consisting of hydrogen, C1 to C20 alkyls, alkenyls or aryls, and substituted C1 to C20 alkyls, alkenyls or aryls. 2. The nanocomposite of claim 1, wherein the olefin is selected from one or more of isobutylene, isobutene, 2-methyl-1-butene, 3-methyl-1-butene, 2-methyl-2-butene, and 4-methyl-1-pentene, ethylene, propene, 1-butene, 1-hexene, and 1-octene. 3. The nanocomposite of claim 1, wherein the elastomer also comprises isoolefin derived units and p-methylstyrene derived units. 4. The nanocomposite of claim 1, wherein the functionalized units are present on the elastomer from 0.01 wt % to 15 wt % of the elastomer. 5. The nanocomposite of claim 1, wherein the clay has been treated with an exfoliating agent to form an exfoliated clay. 6. The nanocomposite of claim 1, wherein the clay is present from 0.1 wt % to 50 wt % of the nanocomposite. 7. An article comprising the nanocomposite of claim 1, the article being a tire innerliner or an innertube. 8. The nanocomposite of claim 1, wherein the clay is present from 0.2 wt % to 10 wt % of the nanocomposite. 9. The nanocomposite of claim 1, wherein the clay is present from 1 wt % to 30 wt % of the nanocomposite. 10. The nanocomposite of claim 5, wherein the exfoliating agent is selected from ammonium ion, alkylamines, alkylammonium ion (primary, secondary, tertiary and quaternary), phosphonium or sulfonium derivatives of aliphatic, aromatic or arylaliphatic amines, phosphines and sulfides and blends thereof.
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이 특허에 인용된 특허 (36)
Nagano Hayao (Yokohama JPX) Costemalle Bernard J. (Rhode-Saint-Genese BEX 4), Addition of mineral rubber to halobutyl blends.
Arjunan Palanisamy (Houston TX) White Donald Andrew (Princeton NJ), Compatibilized elastomer blends containing grafted polymers of an isoolefin and alkylstyrene.
Usuki Arimitsu,JPX ; Kato Makoto,JPX ; Okada Akane,JPX, Composite clay material and method for producing the same, blend material and composite clay rubber using the same and.
Usuki Arimitsu,JPX ; Kato Makoto,JPX ; Okada Akane,JPX, Composite clay material and method for producing the same, blend material and composite clay rubber using the same and production method thereof.
Kamigaito Osami (Nagoya JPX) Fukushima Yoshiaki (Nagoya JPX) Doi Haruo (Nagoya JPX), Composite material composed of clay mineral and organic high polymer and method for producing the same.
Powers Kenneth W. (Berkeley Heights NJ) Roper Robert (Summit NJ) Gorbaty Martin L. (Fanwood NJ), Functional group containing cyclic diolefin butyl rubbers.
Gardner Irwin J. (Scotch Plains NJ) Fusco James V. (Red Bank NJ) Newman Neil F. (Edison NJ) Kowalski Ronald C. (New Providence NJ) Davis William M. (Edison NJ) Baldwin Francis P. (Coupeville WA), Halogenated butyl rubber.
Gardner Irwin J. (Scotch Plains NJ) Fusco James V. (Red Bank NJ) Newman Neil F. (Edison NJ) Kowalski Ronald C. (New Providence NJ) Davis William M. (Edison NJ) Baldwin Francis P. (Coupeville WA), Halogenated butyl rubber.
Wei Ching-Yu (Schenectady NY) Salisbury Roger S. (Schenectady NY) Kwasnick Robert F. (Schenectady NY) Giambattista Brian W. (Scotia NY), Method of fabricating a radiation imager with common passivation dielectric for gate electrode and photosensor.
Elspass Chester W. ; Peiffer Dennis G. ; Kresge Edward Nathan ; Hsieh Dong-Tsai ; Chludzinski James Joseph ; Liang Keng S., Nanocomposite materials (LAW392).
Powers Kenneth W. (Berkeley Heights NJ) Wang Hsien-Chang (Edison NJ) Chung T-C (State College PA) Dias Anthony J. (Linden NJ) Olkusz Joseph A. (Fanwood NJ), Para-alkylstyrene/isoolefin copolymers and functionalized copolymers thereof.
Maxfield MacRae (Teaneck NJ) Christiani Brian R. (Maplewood NJ) Sastri Vinod R. (Richmond VA), Polymer nanocomposites comprising a polymer and an exfoliated particulate material derivatized with organo silanes, orga.
Pagano,Salvatore; Thonier,Christel; Mignani,Gerard, Rubber compositions for use in tires, comprising a (white filler/elastomer) coupling agent with an ester function.
Elspass Chester W. ; Peiffer Dennis George ; Kresge Edward Nathan ; Wright Pamela Jean ; Chludzinski James Joseph ; Wang Hsien Chang, Tactoidal elastomer nanocomposites.
Kresge Edward Nathan (Watchung NJ) Lohse David John (Bridgewater NJ), Tire inner-liners comprising a solid rubber and a complex of a reactive rubber and layered silicate clay.
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