Abstract:
The preparation of halosilanes having mixed-halogen substituents is described comprising providing an aryl-halo-silane having one more first halogens and one or more aryl groups, and substituting one or more of said aryl groups of said aryl-halo-silane with a second halogen having an atomic number greater than that of said first halogen.
Abstract:
Vapor deposition precursors that can deposit conformal thin ruthenium films on substrates with a very high growth rate, low resistivity and low levels of carbon, oxygen and nitrogen impurities have been provided. The precursors described herein include a compound having the formula CMC', wherein M comprises a metal or a metalloid; C comprises a substituted or unsubstituted acyclic alkene, cycloalkene or cycloalkene-like ring structure; and C' comprises a substituted or unsubstituted acyclic alkene, cycloalkene or cycloalkene-like ring structure; wherein at least one of C and C' further and individually is substituted with a ligand represented by the formula CH(X)R 1 , wherein X is a N, P, or S-substituted functional group or hydroxyl, and R 1 is hydrogen or a hydrocarbon. Methods of production of the vapor deposition precursors and the resulting films, and uses and end uses of the vapor deposition precursors and resulting films are also described.
Abstract:
A new class of metalorganic vaporizable compounds with mixed ligands is described herein, along with their use for the deposition of thin films of metals and metal- containing oxides, nitrides, oxynitrides, silicates, suicides, metal containing materials, and combinations thereof. . The metalorganic vaporizable compounds comprise amides in combination with malonates and guanidinates as donor-functionalized bidentate chelating ligands. The use of a metalorganic vaporizable compounds with mixed ligands to deposit and modify thin films of Hf, Zr, Ti, Ta, Al, Sn, Zn, Ca, Mg, Ga, In, Tl, Sc, Bi, Rh, Ir, La, Pr, Eu, Gd, Ba, Sr, and other lanthanide metal oxides, nitrides, oxynitrides, silicates, suicides, and composites, and further use of metalorganic vaporizable compounds with mixed ligands to deposit thin films of Ru, Cu, Co, Ag, Au, Pd, Pt, Ni, Fe, Mn, Cr, V, Nb, Pb, W, Si, Ge and Mo metals, metal oxides, nitrides, oxynitrides, silicates, suicides and combinations thereof are also described herein. A process for the preparation of metalorganic vaporizable compounds comprising amides in combination with donor-functionalized bidentate chelating ligands as a mixed ligand system is described herein. In addition, the use of metalorganic vaporizable compounds in various vapor phase deposition processes such as metal organic chemical vapor deposition (MOCVD) and atomic layer deposition (ALD) of metals and metal-containing oxide thin films is described herein.
Abstract:
Fluorinated macromonomers, a PCTFE-g-poly(M) graft copolymer, and moisture barrier films and articles formed therefrom are provided. The PCTFE-g-poly(M) graft copolymers have a PCTFE backbone component and a plurality of pendant groups attached to the PCTFE backbone component.
Abstract:
Methods for the synthesis of CTFE-based block copolymers through iodine transfer polymerization are disclosed. In an exemplary embodiment, a method includes reacting a fluoromonomer “M” with a chain transfer agent of the formula X—Y or Y—X—Y, wherein X represents a C1-C3 hydrocarbon, a C1-C6 hydrofluorocarbon, C1-C6 hydrochlorofluorocarbon, or C1-C6 fluorocarbon and Y represents iodine or bromine, in the presence of a radical initiator, to form a macro-initiator of the formula: X-poly(M)-Y or Y-poly(M)-X-poly(M)-Y, wherein poly(M) represents a polymer of the fluoromonomer. The method further includes reacting the macro-initiator with chlorotrifluoroethylene (CTFE) in the presence of a radical initiator to form a diblock or a triblock CTFE-based block copolymer of the formula: X-poly(M)-block-poly(CTFE) or PCTFE-block-poly(M)-X-poly(M)-block-PCTFE.
Abstract:
Methods for synthesizing stabilized polymers of chlorotrifluoroethylene and products manufactured using such polymers are disclosed herein. In one exemplary embodiment, a method for synthesizing chlorotrifluoroethylene (CTFE)-based polymers includes reacting, in the presence of an initiator and in a reaction medium at a pH of about 1.5 to about 2.5, one or more monomers comprising CTFE and after an amount of polymerization reaction time has passed, adding a neutralizing agent to the reaction medium to increase the pH of the reaction medium to within a range of about 1.8 to about 6.0.
Abstract:
Disclosed is a copolymer film that includes a first comonomer including a chlorofluoro olefin and a second comonomer that is selected from the group consisting of itaconic acid, 2,3-dihydropyran, D-glucal, glycerine carbonate vinyl ether, 2-hydroxypropyl acrylate, maleic anhydride, vinylidene chloride, and mixtures thereof.
Abstract:
Un proceso para la síntesis de copolímeros de injerto PCTFE-(poli-clorotrifluoroetileno)-g-poli(M), comprendiendo el procedimiento: a) proporcionar una molécula que tiene la fórmula: X-[C(A)2C(B)(B')]n-Q[CY=C(Z)(Z')] o [C(A)2=C(B)]n-Q[C(Y)(10 Y')-C(Z)(Z')]-X', en las que A es H o F; B y B' son H, F o Cl, y no son necesariamente iguales; X y X' son Br, Cl o I (y no son necesariamente iguales); Y e Y' son F, Br, Cl o I (y no son necesariamente iguales); y en la que Z y Z' son F, Br, Cl o I (y no son necesariamente iguales); Q es opcional y es oxígeno (O) o azufre (S); y n es al menos 1; y b) hacer reaccionar la molécula X-[C(A)2C(B)(B')]n-Q[CY=C(Z)(Z')] o [C(A)2=C(B)]n-Q[C(Y)(Y')-C(Z)(Z')]-X' con un monómero CTFE en presencia de un iniciador por radicales libres, formando así el monómero CTFE para dar un componente de esqueleto del copolímero de injerto poli-CTFE que tiene uno o más componentes monoméricos colgantes X'-[C(A)2C(B)(B')]n- o -[C(Y)(Y')-C(Z)(Z')]-X' unidos al mismo.
Abstract:
Disclosed is a coated substrate, which includes a substrate comprising a cellulosic fiber material and a copolymer coated in a thin film on at least one surface of the substrate. The copolymer has at least two comonomer units of the formula: CX2CYA, wherein each X is independently selected from the group consisting of H, C1 and F; Y is selected from the group consisting of H, C1, F, O(CZ2)nCZ3, (CZ2)nCZ3, (OCZ2CZ2)nCZ3 and (O(CZ2)n)nCZ3, wherein each n is independently from about 1 to about 12 and each Z is independently selected from the group consisting of H, Cl and F; and A is selected from the group consisting of H, Cl and F; provided that for at least one comonomer unit, at least one of A, Y, and either X or any Z is C1.