Abstract: A transamination process is described to prepare polyamine product mixtures from reactants comprising mixed nitrogen-containing compounds with binary carbon spacing between nitrogen-containing groups (a binary component). A second nitrogen-containing component with a second carbon atom spacing between nitrogen-containing groups may also be employed. The molar ratio between the binary and second components can be adjusted to customize the product composition for desired end uses.
Abstract: The present invention relates to a process for the production of alkali cellulose for the production of alkali cellulose and, optionally, cellulose ethers from cellulose in the presence of alkali and, if applicable, with alkylating and/or hydroxyalkylating agent(s) comprising the reaction of a cellulose with an alkali metal hydroxide, wherein the alkali metal hydroxide is mixed with cellulose in a mixing apparatus, the mixing apparatus (1) having an upper region (20, 102a, 202a) with a first cross-section and a lower region (21, 102b, 202b) with a second cross-section, the second cross-section being the same as or smaller than the first cross-section and comprising at least one non-horizontally oriented mixing device (23, 27, 121, 221, 224).
Abstract: The present invention provides strategies for making high quality CIGS photoabsorbing materials from precursor films that incorporate a sub-stoichiometric amount of chalcogen(s). Chalcogen(s) are incorporated into the CIGS precursor film via co-sputtering with one or more other constituents of the precursor. Optional annealing also may be practiced to convert precursor into more desirable chalcopyrite crystalline form in event all or a portion of the precursor has another constitution. The resultant precursors generally are sub-stoichiometric with respect to chalcogen and have very poor electronic characteristics. The conversion of these precursors into CMS photoabsorbing material via chalcogenizing treatment occurs with dramatically reduced interfacial void content. The resultant CIGS material displays excellent adhesion to other layers in the resultant photovoltaic devices.
Type:
Grant
Filed:
March 14, 2011
Date of Patent:
March 31, 2015
Assignee:
DOW Global Technologies LLC
Inventors:
Jennifer E. Gerbi, Marc G. Langlois, Robert T. Nilsson
Abstract: This invention relates to a fiber reinforced plastic material with improved flexibility and high tensile strength for use in optic cables. The strength member composition comprises a polypropylene based thermoplastic resin, a continuous fiber having a modulus greater than 80 PGa, and talc.
Type:
Grant
Filed:
September 21, 2011
Date of Patent:
March 31, 2015
Assignee:
Dow Global Technologies LLC
Inventors:
Buo Chen, Bharat I. Chaudhary, Chester J. Kmiec, Jeffrey M. Cogen
Abstract: Polysaccharide derivatives having a median Equivalent Projected Circle Diameter (EQPC) of less than 140 micrometers and a particle size and shape distribution meeting condition A or B or both are useful for preparing dosage forms, particularly for preparing compressed sustained-release dosage forms: A. non-compacted polysaccharide derivative particles have a flowability of at least 45 g/sec through a vertically inverted cone having a vertex angle of about 40 and an outlet diameter of about 50 mm, or B. i) no more than 40 volume percent of the polysaccharide derivative particles are fine particles having a particle length LEFI of less than 40 micrometers and ii) no more than 40 volume percent of the polysaccharide derivative particles are fibrous particles, and the sum of the fine particles and the fibrous particles does not exceed 50 volume percent.
Type:
Grant
Filed:
March 29, 2012
Date of Patent:
March 31, 2015
Assignee:
Dow Global Technologies LLC
Inventors:
Jennifer L'hote-Gaston, Nicholas S. Grasman, Jorg Theuerkauf, Sjoerd A. De Vries
Abstract: The present invention is directed toward spiral wound modules along with methods for making and using the same. Several embodiments are described including methods for making spiral wound filtration modules using membrane sheet provided from a roll, wherein the membrane sheet is unrolled and assembled in a direction parallel to the permeate collection tube of the module.
Abstract: Provided are biocidal compositions comprising: tris(hydroxymethyl)nitromethane; and a brominated nitroalkanol compound of formula I: wherein R1, R2, and R3 are as defined herein. The compositions are useful for controlling microorganisms in aqueous or water-containing systems.
Abstract: A surfactant composition selected from the group consisting of: ArO—(CH2CH[CH2CH3]O)1-10(CH2CH2O)5-50H, isomers, aromatic ring substituted analogs, and mixtures thereof; and an aqueous coating composition including an aqueous polymeric dispersion, and certain other compositions, including the surfactant composition are provided. Also provided are a method for forming a coating and a method for improving the freeze/thaw stability of an aqueous composition including an aqueous polymeric dispersion.
Abstract: The invention includes methods for testing membranes and membrane-based systems by introducing particles into a feed liquid passing across the surface of a membrane wherein the particles have a size larger than the nominal cut-off of the membrane, and measuring the presence of the particles within a permeate solution which passes through the membrane. In one embodiment, the particles are selected from those which dissolve within the permeate solution after being measured. In another embodiment, the particles are selected from inorganic salts. Many additional embodiments are disclosed.
Abstract: A process for manufacturing a multilayer article, the article comprising two crosslinked semiconductive layers separated by and bonded to an insulation layer, the semiconductive layers formed from a peroxide-crosslinkable olefin elastomer and the insulation layer comprising composition comprising a silane-grafted olefinic elastomer, the process comprises the steps of: (A) injecting the silane-grafted olefinic elastomer between the two crosslinked semiconductive layers so as to have direct contact with each semiconductive layer, and (B) crosslinking the silane-grafted olefinic elastomer in the absence of a peroxide catalyst.
Type:
Grant
Filed:
September 21, 2011
Date of Patent:
March 31, 2015
Assignee:
Dow Global Technologies LLC
Inventors:
Mohamed Esseghir, Jeffrey M. Cogen, Saurav S. Sengupta
Abstract: A curable composition including (a) at least one divinylarene dioxide; (b) at least one phenol, wherein the phenol is unsubstituted at a 2-, 4-, or 6-phenolic ring position; and (c) at least one acid compound-related cure catalyst; and a cured product made from the above curable composition.
Abstract: Polymer blends of polypropylene homopolymer and propylene-?-olefin interpolymer. Processes for producing polymeric compositions comprising control-cooling heated blends of polypropylene and propylene-?-olefin interpolymer. Such polymeric compositions can be employed in forming coated wires and cables.
Type:
Application
Filed:
February 22, 2013
Publication date:
March 26, 2015
Applicants:
Dow Global Technologies LLC, GnoSys Global Ltd., University of Southampton
Abstract: Cross-flow filtration systems and corresponding methods for separation particulate matter from liquids. A representative system includes a cross-flow filtration zone (24) in fluid communication with a particulate settling zone (30) and further includes a fluid inlet (14) in fluid communication with one of the zones and a process fluid outlet (20) and in fluid communication with the other zone. A fluid treatment pathway (28) extends from the fluid inlet (14), through the cross-flow filtration and particulate settling zones (24, 30) to the process fluid outlet (20). A filter assembly (26) is located within the cross-flow filtration zone (24) and comprises a membrane surface (44) that isolates a filtrate chamber (46) from the fluid treatment pathway (28), and the filtrate chamber (46) is in fluid communication with a filtered fluid outlet (16). A recirculation pump (Z) in fluid communication with the process fluid outlet (20) and fluid inlet (14).
Abstract: A polymer comprises units derived from ethylene and polyalkylene, the polymer having at least 0.15 units of amyl groups per 1000 carbon atoms as determined by 13C Nuclear Magnetic Resonance (NMR).
Type:
Grant
Filed:
September 14, 2010
Date of Patent:
March 24, 2015
Assignee:
Dow Global Technologies LLC
Inventors:
Mehmet Demirors, Teresa P. Karjala, Otto J. Berbee, Cornelis F. J. den Doelder, John O. Osby
Abstract: The present disclosure provides a composition which includes a thermoplastic elastomer and a flame retardant composed of a metal hydrate and an oligomeric phosphate ester. The weight ratio of metal hydrate to oligomeric phosphate ester is greater than 1.45:1. The composition may be a component of an article such as a coated wire or a coated cable, with the composition present in the coating.
Type:
Grant
Filed:
July 31, 2009
Date of Patent:
March 24, 2015
Assignee:
Dow Global Technologies LLC
Inventors:
Xiang Y. Tai, Wei G. Yao, Yu D. Qi, Given J. Chen, Robert F. Eaton
Abstract: A process including contacting one or more Strecker sulfonation reaction products of one or more halogenated alkyl ethers in the presence of sulfite with one or more polar water soluble organic solvents selected from acetone, methyl ethyl ketone, the C2-C5 alkyl alcohols, and the like, to form an extraction mixture; allowing the extraction mixture to separate into an aqueous phase and an organic phase; and separating the aqueous phase from the organic phase; wherein the one or more Strecker sulfonation reaction products each comprise at least 30 percent by weight of one or more inorganic salts and the organic phase following separation comprises less than 20 percent by weight of one or more inorganic salts, is provided.
Abstract: Mixing apparatus and methods for the continuous production of monomer emulsions that may be used in the production of polymer dispersions by radical aqueous emulsion polymerization. The mixing apparatus can include a pipe-in-pipe injector (100) and a suitable rotor-stator mixer (102). Liquids are delivered to the rotor-stator mixer via an inner (110) and an outer (108) pipe in such a way as to substantially prevent feed inconsistencies in a feed ratio of the liquids prior to entering a mixing zone of the rotor-stator mixer for emulsion formation.
Type:
Grant
Filed:
June 24, 2009
Date of Patent:
March 24, 2015
Assignee:
Dow Global Technologies LLC
Inventors:
Kenneth W. Hester, Daniel R. Stanley, Mark S. Riddle, Mark A. Greschaw, Dennis D. Hacker
Abstract: The present invention is a method for increasing the melt strength of a polyethylene resin comprising reacting the polyethylene resin with a free radical generator with a decomposition energy in between ?50 kJoule/mole and ?250 kJoules/mole and a peak decomposition temperature of less than 280 degree C. The resulting resin has increased melt strength with higher ratio of elongational viscosities at 0.1 to 100 rad/s when compared to substantially similar polyethylene resins which have not been reacted with a free radical generator such as an alkoxy amine derivative.
Type:
Grant
Filed:
January 11, 2011
Date of Patent:
March 24, 2015
Assignee:
Dow Global Technologies LLC
Inventors:
Mehmet Demirors, Teresa Karjala, Nicolas Mazzola
Abstract: Described are methods of providing a shelf-stable probiotic-containing food or beverage, comprising forming a semi-permeable microsphere, said microsphere comprising a probiotic, a high molecular weight polymer, and an effective amount of bacteriostatic agent.
Type:
Grant
Filed:
September 6, 2011
Date of Patent:
March 24, 2015
Assignee:
Dow Global Technologies LLC
Inventors:
Liang Hong, Kathy L. Lichtenwald, Krishna Madduri, Syed A. Shah, Christopher J. Tucker, Caroline Woelfle
Abstract: Methods of producing a composition comprising a crosslinkable silane-terminated polymer having at least one crosslinkable silyl group in each molecule are provided.
Type:
Grant
Filed:
June 14, 2012
Date of Patent:
March 24, 2015
Assignee:
Dow Global Technologies LLC
Inventors:
Kamesh R. Vyakaranam, Ling Zhang, Venkat S. Minnikanti, Rajat Duggal, William A. Koonce, Amarnath Singh, Phillip S. Athey