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David James Schreck
Researcher at Union Carbide
Publications - 48
Citations - 1112
David James Schreck is an academic researcher from Union Carbide. The author has contributed to research in topics: Catalysis & Triethylenetetramine. The author has an hindex of 16, co-authored 48 publications receiving 1109 citations.
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Patent
Catalyst composition, method of polymerization, and polymer therefrom
Donald R. Loveday,Mcconville David H,John F. Szul,Kersten Anne Erickson,Simon Mawson,Tae Hoon Kwack,Frederick John Karol,David James Schreck +7 more
TL;DR: In this paper, a new polyolefin, generally polyethylene, particularly a multimodal polymer and more specifically, a bimodal polymeric polymer, and its use in various end-use applications such as film, molding and pipe was disclosed.
Patent
Production of ethanol from acetic acid
Ben W Kiff,David James Schreck +1 more
TL;DR: Ethanol is produced from acetic acid using an olefin having at least 4 carbon atoms, hydrogenating the ester obtained into ethanol, removing the ethanol, dehydrating the higher alcohol back to the original olelin and recycling the olein to esterify the acetic acids as mentioned in this paper.
Patent
Multiple catalyst system
Rex Eugene Murray,Simon Mawson,John F. Szul,Kersten Anne Erickson,Tae Hoon Kwack,Frederick John Karol,David James Schreck +6 more
TL;DR: In this paper, a process to polymerize olefins compris ing reacting olefs with a catalyst system comprising an activator, a metallocene and a second metal compound based on bidentate ligands containing heterocycle moieties was described.
Patent
Conversion of a Multihydroxylated-Aliphatic Hydrocarbon or Ester Thereof to a Chlorohydrin
David James Schreck,William J. Kruper,Richard D. Varjian,Mark E. Jones,Robert M. Campbell,Kenneth L. Kearns,Bruce D. Hook,John R. Briggs,Jeffrey G. Hippler +8 more
TL;DR: In this paper, a process for converting a multihydroxylated-aliphatic hydrocarbon or ester thereof to a chlorohydrin, by contacting the starting material with a source of a superatmospheric partial pressure of hydrogen chloride for a sufficient time and at a sufficient temperature, was described.
Patent
Catalyst preparation method
TL;DR: In this paper, a method to prepare a supported catalyst system comprising preparing a combination comprising 1) a first supported catalyst consisting of a support, an activator and a metal catalyst compound, and 2) a second supported catalyst comprising a support and activator, and subsequently spray-drying the combination.