Abstract: A method of preparing a poly(ester-carbonate) includes contacting an aqueous solution including a dicarboxylic acid with a first solution including phosgene and a first organic solvent in a tubular reactor to provide a first reaction mixture. A dihydroxy aromatic compound, the corresponding dialkali metal salt of the dihydroxy aromatic compound, or a combination comprising at least one of the foregoing, water, and a second organic solvent are combined to provide a second reaction mixture. The method further includes introducing the first reaction mixture, the second reaction mixture, and a second solution comprising phosgene to a tank reactor, wherein the tank reactor has a first pH of 7 to 10. The pH is optionally raised to 9 to 11 to provide a third reaction mixture including the poly(ester-carbonate). Poly(ester-carbonate)s prepared according to the method described herein are also disclosed.

Abstract: A modular sensor platform is provided for installation on an unmanned aerial vehicle (UAV) for sensor operation. The platform includes an external shell that defines an internal volume, an interface module, and a mission module. The shell inserts between sections of the UAV. The interface module attaches to the shell within the volume. The mission module attaches to the shell within the volume. The interface module includes a communications package, a battery package and an air intake.

Abstract: A fixture is provided for securing an annular drone module to a test stand. The fixture includes a rear outside annulus, a front inside annulus, a plurality of tabs, and a plurality of flanges. The rear outside annulus extend radially to an outer rim and longitudinally from an aft surface and a lip surface. The front inside annulus extends radially to a mezzanine rim and longitudinally from the lip surface to a fore surface. The tabs extending radially from the mezzanine rim on the front inside annulus. The plurality of flanges extending from the outer rim on the rear outside annulus. The drone module is disposed facing the lip surface between the tabs and the mezzanine rim by first mechanical fasteners, and the flanges mount to the test stand by second mechanical fasteners, such as screws. The fixture can be a unitary construction and be composed of thermoset plastic.

Abstract: A modular sensor platform is provided for installation on an unmanned aerial vehicle (UAV) for sensor operation. The platform includes an external shell that defines an internal volume, an interface module, and a mission module. The shell inserts between sections of the UAV. The interface module attaches to the shell within the volume. The mission module attaches to the shell within the volume. The interface module includes a communications package, a battery package and an air intake.

Abstract: A method of preparing a poly(ester-carbonate) includes contacting an aqueous solution including a dicarboxylic acid with a first solution including phosgene and a first organic solvent in a tubular reactor to provide a first reaction mixture. A dihydroxy aromatic compound, the corresponding dialkali metal salt of the dihydroxy aromatic compound, or a combination comprising at least one of the foregoing, water, and a second organic solvent are combined to provide a second reaction mixture. The method further includes introducing the first reaction mixture, the second reaction mixture, and a second solution comprising phosgene to a tank reactor, wherein the tank reactor has a first pH of 7 to 10. The pH is optionally raised to 9 to 11 to provide a third reaction mixture including the poly(ester-carbonate). Poly(ester-carbonate)s prepared according to the method described herein are also disclosed.

Abstract: A fixture is provided for securing an annular drone module to a test stand. The fixture includes a rear outside annulus, a front inside annulus, a plurality of tabs, and a plurality of flanges. The rear outside annulus extend radially to an outer rim and longitudinally from an aft surface and a lip surface. The front inside annulus extends radially to a mezzanine rim and longitudinally from the lip surface to a fore surface. The tabs extending radially from the mezzanine rim on the front inside annulus. The plurality of flanges extending from the outer rim on the rear outside annulus. The drone module is disposed facing the lip surface between the tabs and the mezzanine rim by first mechanical fasteners, and the flanges mount to the test stand by second mechanical fasteners, such as screws. The fixture can be a unitary construction and be composed of thermoset plastic.

Abstract: The present invention is directed to renewable compositions derived from fermentation of biomass, and integrated methods of preparing such compositions.

Abstract: The present invention in its various embodiments is directed to methods for preparing a renewable jet fuel blendstock, and blendstocks prepared by such methods, comprising fermenting a biomass-derived feedstock to form one or more C2-C6 alcohols such as isobutanol, catalytically dehydrate and oligomerize the alcohols to form higher molecular weight olefins (e.g., C8-C16 olefins), hydrogenating at least a portion of the higher molecular weight olefins to form a renewable jet fuel blendstock comprising C12 and C16 alkanes which meet or exceed the requirements of ASTM D7566-10a for hydroprocessed synthesized paraffinic kerosene (SPK).

Abstract: The present invention is directed to renewable compositions derived from fermentation of biomass, and integrated methods of preparing such compositions.

Abstract: The method of the present invention provides a high yield pathway to 2,5-dimethylhexadiene from renewable isobutanol, which enables economic production of renewable p-xylene (and subsequently, terephthalic acid, a key monomer in the production of PET) from isobutanol. In addition, the present invention provides methods for producing 2,5-dimethylhexadiene from a variety of feed stocks that can act as “equivalents” of isobutylene and/or isobutyraldehyde including isobutanol, isobutylene oxide, and isobutyl ethers and acetals. Catalysts employed in the present methods that produce 2,5-dimethylhexadiene can also catalyze alcohol dehydration, alcohol oxidation, epoxide rearrangement, and ether and acetal cleavage.

Abstract: The present invention in its various embodiments is directed to methods for preparing a renewable jet fuel blendstock, and blendstocks prepared by such methods, comprising fermenting a biomass-derived feedstock to form one or more C2—C6 alcohols such as isobutanol, catalytically dehydrate and oligomerize the alcohols to form higher molecular weight olefins (e.g., C8—C16 olefins), hydrogenating at least a portion of the higher molecular weight olefins to form a renewable jet fuel blendstock comprising C12 and C16 alkanes which meet or exceed the requirements of ASTM D7566-10a for hydroprocessed synthesized paraffinic kerosene (SPK).

Abstract: Isobutene, isoprene, and butadiene are obtained from mixtures of C4 and/or C5 olefins by dehydrogenation. The C4 and/or C5 olefins can be obtained by dehydration of C4 and C5 alcohols, for example, renewable C4 and C5 alcohols prepared from biomass by thermochemical or fermentation processes. Isoprene or butadiene can be polymerized to form polymers such as polyisoprene, polybutadiene, synthetic rubbers such as butyl rubber, etc. in addition, butadiene can be converted to monomers such as methyl methacrylate, adipic acid, adiponitrile, 1,4-butadiene, etc. which can then be polymerized to form nylons, polyesters, polymethylmethacrylate etc.

Abstract: The present invention is directed to renewable compositions derived from fermentation of biomass, and integrated methods of preparing such compositions.

Abstract: The present invention is directed to renewable compositions derived from fermentation of biomass, and integrated methods of preparing such compositions.

Abstract: Isobutene, isoprene, and butadiene are obtained from mixtures of C4 and/or C5 olefins by dehydrogenation. The C4 and/or C5 olefins can be obtained by dehydration of C4 and C5 alcohols, for example, renewable C4 and C5 alcohols prepared from biomass by thermochemical or fermentation processes. Isoprene or butadiene can be polymerized to form polymers such as polyisoprene, polybutadiene, synthetic rubbers such as butyl rubber, etc. in addition, butadiene can be converted to monomers such as methyl methacrylate, adipic acid, adiponitrile, 1,4-butadiene, etc. which can then be polymerized to form nylons, polyesters, polymethylmethacrylate etc.

Abstract: The present invention is directed to renewable compositions derived from fermentation of biomass, and integrated methods of preparing such compositions.

Abstract: The present invention in its various embodiments is directed to methods for preparing a renewable jet fuel blendstock, and blendstocks prepared by such methods, comprising fermenting a biomass-derived feedstock to form one or more C2-C6 alcohols such as isobutanol, catalytically dehydrate and oligomerize the alcohols to form higher molecular weight olefins (e.g., C8-C16 olefins), hydrogenating at least a portion of the higher molecular weight olefins to form a renewable jet fuel blendstock comprising C12 and C16 alkanes which meet or exceed the requirements of ASTM D7566-10a for hydroprocessed synthesized paraffinic kerosene (SPK).

Abstract: The present invention is directed to renewable compositions derived from fermentation of biomass, and integrated methods of preparing such compositions.

Abstract: The method of the present invention provides a high yield pathway to 2,5-dimethylhexadiene from renewable isobutanol, which enables economic production of renewable p-xylene (and subsequently, terephthalic acid, a key monomer in the production of PET) from isobutanol. In addition, the present invention provides methods for producing 2,5-dimethylhexadiene from a variety of feed stocks that can act as “equivalents” of isobutylene and/or isobutyraldehyde including isobutanol, isobutylene oxide, and isobutyl ethers and acetals. Catalysts employed in the present methods that produce 2,5-dimethylhexadiene can also catalyze alcohol dehydration, alcohol oxidation, epoxide rearrangement, and ether and acetal cleavage.

Abstract: The present invention is directed to renewable compositions derived from fermentation of biomass, and integrated methods of preparing such compositions.