COMPOSITIONS AND METHODS FOR POLYMER COMPOSITES
This invention relates to organic salt compositions useful in the preparation of organoclay compositions, polymer-organoclay composite compositions, and methods for the preparation of polymer nanocomposites. In one embodiment, the present invention provides a polymer-organoclay composite composition comprising (a) a polymeric resin; and (b) an organoclay composition comprising alternating inorganic silicate layers and organic layers, said organic layers comprising a quaternary phosphonium cation having structure XXXIII wherein Ar 12 , Ar 13 , Ar 14 and Ar 15 are independently C 2 -C 50 aromatic radicals; and Ar 16 is a C 2 -C 200 aromatic radical, or a polymer chain comprising at least one aromatic group.
1 . A polymer-organoclay composite composition comprising:
(a) a polymeric resin; and
(b) an organoclay composition comprising alternating inorganic silicate layers and organic layers, said organic layers comprising a quaternary phosphonium cation having structure XXXIII
wherein Ar 12 , Ar 13 , Ar 14 and Ar 15 are independently C 2 -C 50 aromatic radicals; and Ar 16 is a C 2 -C 200 aromatic radical, or a polymer chain comprising at least one aromatic group.
2 . The polymer-organoclay composite composition according to claim 1 , wherein Ar 16 is phenyl.
3 . The polymer-organoclay composite composition according to claim 1 , wherein said polymeric resin comprises at least one polymer selected from the group consisting of amorphous thermoplastic polymers, crystalline thermoplastic polymers, and copolymers thereof.
4 . The polymer-organoclay composite composition according to claim 1 , wherein the polymeric resin is selected from a group consisting of polyetherimides, polyamides, polyesters, polyarylene sulfides, polyarylene ethers, polyether sulfones, polyether ketones, polyether ether ketones, polyphenylenes, polycarbonates, and a combination comprising at least one of the foregoing polymers.
5 . The polymer-organoclay composite composition according to claim 1 , wherein the polymeric resin is selected from a group consisting of polyetherimides, polyamides, polyesters, polyarylene sulfides, polyarylene ethers, polyether sulfones, polyether ketones, polyether ether ketones, polyphenylenes, polycarbonates, and a combination comprising at least one of the foregoing polymers.
6 . The polymer-organoclay composite composition according to claim 1 , wherein the polymeric resin comprises a polyetherimide.
7 . The polymer-organoclay composite composition according to claim 1 , wherein the polymeric resin comprises a polyethersulfone.
8 . The polymer-organoclay composite composition according to claim 1 , wherein the polymeric resin comprises a polyether ketone.
9 . The polymer-organoclay composite composition according to claim 1 , wherein Ar 16 is a polymer chain.
10 . The polymer-organoclay composite composition according to claim 1 , wherein Ar 16 is a polyetherimide polymer chain.
11 . The polymer-organoclay composite composition according to claim 1 , wherein Ar 16 is a polyether ketone polymer chain.
12 . The polymer-organoclay composite composition according to claim 1 , wherein Ar 16 is a polymer chain having a number average molecular weight M n in a range from about 1000 to about 50,000 grams per mole.
13 . The polymer-organoclay composite composition according to claim 1 , wherein Ar 16 is a polymer chain having a number average molecular weight M n in a range from about 1000 to about 20,000 grams per mole.
14 . The polymer-organoclay composite composition according to claim 1 , wherein Ar 16 is a polymer chain having a number average molecular weight M n in a range from about 1000 to about 5,000 grams per mole.
15 . The polymer-organoclay composite composition according to claim 1 , wherein Ar 16 is a polyetherimide polymer chain having a number average molecular weight M n in a range from about 1000 to about 50,000 grams per mole.
16 . The polymer-organoclay composite composition according to claim 1 , wherein Ar 16 is a polyetherimide polymer chain having a number average molecular weight M n in a range from about 1000 to about 20,000 grams per mole.
17 . The polymer-organoclay composite composition according to claim 1 , wherein said quaternary phosphonium cation has structure XXXIV
18 . The polymer-organoclay composite composition according to claim 1 , wherein said quaternary phosphonium cation has structure XXXV)
19 . The polymer-organoclay composite composition according to claim 1 , wherein the inorganic silicate layers are derived from an inorganic clay selected from the group consisting of kaolinite, dickite, nacrite, halloysite, antigorite, chrysotile, pyrophyllite, montmorillonite, beidellite, nontronite, saponite, sauconite, stevensite, hectorite, tetrasilylic mica, sodium taeniolite, muscovite, margarite, talc, vermiculite, phlogopite, xanthophyllite, chlorite, and combinations thereof.
20 . The polymer-organoclay composite composition according to claim 1 , wherein the inorganic silicate layers are derived from an inorganic clay comprising a synthetic clay.
21 . The polymer-organoclay composite composition according to claim 1 , wherein the organoclay composition is characterized by an interlayer distance of from about 5 to about 100 Angstroms.
22 . An article comprising a polymer-organoclay composite composition, said composition comprising:
(a) a polymeric resin; and
(b) an organoclay composition comprising alternating inorganic silicate layers and organic layers, said organic layers comprising a quaternary phosphonium cation having structure XXXIII
wherein Ar 12 , Ar 13 , Ar 14 and Ar 15 are independently C 2 -C 50 aromatic radicals; and Ar 16 is a C 2 -C 200 aromatic radical, or a polymer chain comprising at least one aromatic group.
23 . The article according to claim 22 which is a film.
24 . The article according to claim 22 , which is a solvent cast film comprising a polyetherimide having a dianhydride component and a diamine component and a Tg of between about 180° C. and 450° C., and wherein the film has: a) a CTE of less than 70 ppm/° C.; b) a thickness of between about 0.1 μm and 250 μm; and, c) contains less than 5% residual solvent by weight.
25 . A method for the preparation of a polymer-organoclay composite composition, said method comprising contacting under melt mixing conditions a polymeric resin and an organoclay composition comprising alternating inorganic silicate layers and organic layers, said organic layers comprising a quaternary phosphonium cation having structure XXXIII
wherein Ar 12 , Ar 13 , Ar 14 and Ar 15 are independently C 2 -C 50 aromatic radicals; and Ar 16 is a C 2 -C 200 aromatic radical, or a polymer chain comprising at least one aromatic group.