Abstract: Provided herein are systems and methods for converting CO2 and a reduction gas such as H2 or a hydrocarbon to mixtures of paraffins and aromatics suitable for use as aviation fuel.
Type:
Grant
Filed:
November 20, 2023
Date of Patent:
June 25, 2024
Assignee:
Air Company Holdings, Inc.
Inventors:
Lubo Zhou, Chi Chen, Qiyuan Wu, Stafford W. Sheehan, Namal de Silva, Mahluli Moyo, Jihad Dakka, David DeVilliers, Gregory Constantine, Mark Rumizen
Abstract: Systems and methods are provided for improving product yields and/or product quality during co-processing of fast pyrolysis oil in a fluid catalytic cracking (FCC) reaction environment. The systems and methods can allow for co-processing of an increased amount of fast pyrolysis oil while reducing or minimizing coke production for a feedstock including fast pyrolysis oil and a conventional FCC feed. The reducing or minimizing of coke production can be achieved in part by adding a low molecular weight, non-ionic surfactant to the mixture of fast pyrolysis oil and conventional FCC feed.
Type:
Grant
Filed:
September 13, 2022
Date of Patent:
March 12, 2024
Assignee:
EXXONMOBIL TECHNOLOGY AND ENGINEERING COMPANY
Inventors:
Xiaochun Xu, Hyung Rae Kim, Chengrong Wang, Colin L. Beswick
Abstract: This disclosure relates to red mud compositions. This disclosure also relates to methods of making red mud compositions. This disclosure additionally relates to methods of using red mud compositions.
Abstract: A process and apparatus is disclosed for distributing a gas stream into a downwardly flowing catalyst stream in a vessel by feeding the gas stream into a center of the vessel or the catalyst stream into a hollow cap. The gas stream enters the cap and exits the cap flowing upwardly to contact the catalyst stream.
Type:
Grant
Filed:
August 24, 2017
Date of Patent:
January 5, 2021
Assignee:
UOP LLC
Inventors:
Jeffrey R. Grott, Michael J. Vetter, Jennifer J. Ozmen, Quan Yuan
Abstract: The present invention relates to a compound represented by the chemical formula 1, a catalyst system for olefin oligomerization comprising the same, and a method for oligomerizign olefins using the same, and the catalyst system for olefin oligomerization according to the present invention has excellent catalytic activity as well as high selectivity for 1-hexene or 1-octene, thereby enabling more efficient preparation of alpha-olefins.
Type:
Grant
Filed:
September 1, 2016
Date of Patent:
November 20, 2018
Assignee:
LG Chem, Ltd.
Inventors:
Yong Ho Lee, Seul Ki Im, Eun Ji Shin, Ki Soo Lee, Jin Young Park, Seok Pil Sa, Yoon Ki Hong
Abstract: The invention relates to a rotary disc device (1) in a rotary fluidised bed, the outer edge of said disc rotating inside, and faster than, the fluidised bed, thereby allowing: the rotation speed of the fluidised bed to be accelerated, solid particles and/or micro-droplets to be supplied to the fluidised bed or to the free central area, and different annular areas of the fluidised bed to be separated. The invention also relates to methods for transforming solid particles or micro-droplets on contact with the fluids flowing through the rotary fluidised bed or for transforming fluids on contact with solids in suspension in the rotary fluidised bed, using said device.
Abstract: The invention relates to a process for the autothermal gas-phase dehydrogenation of a hydrocarbon-comprising gas stream by means of an oxygen-comprising gas stream over a heterogeneous catalyst configured as a monolith to give a reaction gas mixture and regeneration of the catalyst in a reactor in the form of a cylinder or prism, wherein the reactor is operated alternately in the production mode of the autothermal gas-phase dehydrogenation and in the regeneration mode.
Type:
Grant
Filed:
August 1, 2012
Date of Patent:
April 21, 2015
Assignee:
BASF SE
Inventors:
Gerhard Olbert, Ulrike Wegerle, Grigorios Kolios, Albena Kostova
Abstract: Catalytic complexes including a metal atom having anionic ligands, at least one nucleophilic carbene ligand, and an alkylidene, vinylidene, or allenylidene ligand. The complexes are highly stable to air, moisture and thermal degradation. The complexes are designed to efficiently carry out a variety of olefin metathesis reactions.
Abstract: Disclosed herein is a process for making 1,2,4-trivinylcyclohexane that is enriched in a particular geometric isomer. The process involves the thermal isomerization of 1,5,9-cyclododecatriene at temperature between 400° C. and 600° C. followed by an equilibration of the resultant intermediate in either the gas phase or liquid phase at temperature between 180° C. and 375° C. and at pressures ranging from 0.101 kPa to 1,013 kPa. Also disclosed are 1,2,4-trivinylcyclohexane compositions that are enriched in a particular geometric isomer.
Type:
Grant
Filed:
July 12, 2012
Date of Patent:
September 9, 2014
Assignee:
Momentive Performance Materials Inc.
Inventors:
Richard W. Cruse, Vivek Khare, Jozef Kowalski, Wlodzimierz Stanczyk
Abstract: A reactor includes an essentially horizontal cylinder for carrying out an autothermal gas-phase dehydrogenation of a hydrocarbon-comprising gas stream using an oxygen-comprising gas stream to give a reaction gas mixture over a heterogeneous catalyst configured as monolith. The interior of the reactor is divided by a detachable, cylindrical or prismatic housing, which is arranged in the longitudinal direction of the reactor and is gastight in the circumferential direction, into an inner region having one or more catalytically active zones, each having a packing composed of monoliths stacked on top of one another, next to one another and behind one another and before each catalytically active zone in each case a mixing zone having solid internals are provided and into an outer region, which is supplied with an inert gas, arranged coaxially to the inner region. A heat exchanger is connected to the housing at one end of the reactor.
Type:
Grant
Filed:
December 20, 2011
Date of Patent:
August 12, 2014
Assignee:
BASF SE
Inventors:
Gerhard Olbert, Ulrike Wegerle, Grigorios Kolios, Albena Kostova, Jasmina Kessel, Alexander Weck, Alireza Rezai
Abstract: Methods and apparatuses for forming low-aromatic high-octane product streams and methods for processing hydrocarbons are provided. In an embodiment, a method for forming a low-aromatic high-octane product stream includes deisohexanizing or deisoheptanizing a hydrocarbon stream and forming a cycloalkane-rich stream. Further, the method includes isomerizing the cycloalkane-rich stream at equilibrium conditions favoring formation of cyclopentanes over cyclohexanes.
Abstract: Disclosed herein are a reaction method and a production method of an organic compound which are capable of achieving high reaction selectivity according to the purpose and a high production rate of a target substance. The methods include at least two fluids, wherein at least one kind of the fluids is a fluid containing at least one organic compound and at least one kind of the fluids other than the above fluid is a fluid containing at least one reactant in the form of a liquid or solution, and the respective fluids join together in a thin film fluid foamed between processing surfaces arranged to be opposite to each other so as to be able to approach to and separate from each other, at least one of which rotates relative to the other, whereby an organic reaction is performed in the thin film fluid.
Abstract: There is provided a composition comprising (a) one or more cyclopropene complex, and (b) 0-10% water by weight based on the weight of said composition, wherein the mole ratio of cyclopropene in said composition to molecular encapsulating agent in said composition is 0.92:1 or higher, or wherein the composition is in the form of a powder and, in a two-dimensional image of a representative sample of said powder, 20% or more of the area of the images of the particles of said cyclopropene complex, based on the area of all the images of all the particles of said cyclopropene complex in said image of said sample, is in the form of particles of said cyclopropene complex that have width dimension of 10 micrometers or larger. Also provided is a process for making a composition comprising cyclopropene complex.
Type:
Grant
Filed:
March 12, 2009
Date of Patent:
November 12, 2013
Assignee:
Rohm and Haas Company
Inventors:
Richard Martin Jacobson, Philip John Ranly
Abstract: A fully synthetic aviation fuel or aviation fuel component is provided, having a total naphthenic content of more than 30 mass %, a mass ratio of naphthenic to iso-paraffinic hydrocarbon species of more than 1 and less than 15, a density (at 15° C.) of greater than 0.775 g·cm?3, but less than 0.850 g·cm?3, an aromatic hydrocarbon content of greater than 8 mass %, but less than 20 mass %, a freezing point of less than ?47° C., and a lubricity BOCLE WSD value of less than 0.85 mm. A process for preparing a fully synthetic coal-derived aviation fuel or aviation fuel component by blending a LTFT and a tar derived blend component is also provided, as is a method of producing a coal-derived, fully synthetic aviation fuel or aviation fuel component from coal gasifier tar and an LTFT derived fraction.
Abstract: Catalytic hydrogenation of a double bond, notably a C?C or C?N double bond, is carried out using a homogenous catalyst which is a complex of rhodium or other transition metal containing at least one ligand which is a nitrogenous organic base. Preferably the complex is phosphorus-free and the ligand is a bicyclic base having formula where R1 and R4 are hydrocarbon chains. R1 preferably is a saturated chain of two carbon atoms and R4 preferably is a saturated chain of three to five carbon atoms.
Abstract: Process for making a bio-diesel and a bio-naphtha and optionally bio-propane from a complex mixture of natural occurring fats & oils, wherein said complex mixture is subjected to a refining treatment for removing the major part of the non-triglyceride and non-fatty acid components, thereby obtaining refined oils; said refined oils are subjected to a fractionation step for obtaining: an unsaturated or substantially unsaturated, liquid or substantially liquid triglyceride part (phase L); and a saturated or substantially saturated, solid or substantially solid triglyceride part (phase S); and said phase L is transformed into alkyl-esters as bio-diesel by a transesterification; said phase S is transformed into linear or substantially linear paraffin's as the bio-naphtha: by an hydrodeoxygenation or from said phase S are obtained fatty acids that are transformed into linear or substantially linear paraffin's as the bio-naphtha by hydrodeoxygenation or decarboxylation of the free fatty acids or from said
Type:
Application
Filed:
July 13, 2010
Publication date:
June 7, 2012
Applicant:
TOTAL PETROCHEMICALS RESEARCH FELUY
Inventors:
Walter Vermeiren, François Bouvart, Nicolas Dubut
Abstract: A method for producing biofuels from biomass in which a refined biomass material is introduced into a non-Faradaic electrochemical device, preferably at a temperature greater than or equal to about 150° C., and deoxygenated and/or decarboxylated in said device to produce an increased carbon chain fuel.
Abstract: One exemplary embodiment can be an apparatus for isomerizing a hydrocarbon stream rich in a C4 hydrocarbon and/or at least one of a C5 and C6 hydrocarbon. The apparatus can include: a first drier and a second drier adapted to receive a fluid including at least one reactant; and a reaction zone communicating with the first drier to receive the fluid including at least one reactant and with the second drier to receive the regenerant. Generally, the first drier operates at a first condition to dry the fluid including at least one reactant and the second drier operates at a second condition during regeneration with a regenerant. The regenerant is displaced from the drier using a down-flow regenerant displacement assembly.
Type:
Application
Filed:
September 1, 2011
Publication date:
December 22, 2011
Applicant:
UOP LLC
Inventors:
Bryan S. Garney, Jocelyn C. Daguio, Kurt A. Detrick, Douglas A. Becci, David J. Shecterle, John M. Krupczak, Andrew D. Mezera
Abstract: The present invention relates to a synthesis method of metal cyclopentadienide by direct reaction of dicyclopentadiene with a group 1 metal in the presence of an aprotic solvent. Unlike the conventional method depending on retro Diels-Alder reaction of dicyclopentadiene to generate indirectly cyclopentadiene, the method of the present invention favors generation of cyclopentadiene and metal cyclopentadienide as well by adding dicyclopentadiene directly when the reaction temperature reaches to the boiling point of a reaction solvent.
Abstract: Disclosed herein are a reaction method and a production method of an organic compound which are capable of achieving high reaction selectivity according to the purpose and a high production rate of a target substance. The methods include at least two fluids, wherein at least one kind of the fluids is a fluid containing at least one organic compound and at least one kind of the fluids other than the above fluid is a fluid containing at least one reactant in the form of a liquid or solution, and the respective fluids join together in a thin film fluid foamed between processing surfaces arranged to be opposite to each other so as to be able to approach to and separate from each other, at least one of which rotates relative to the other, whereby an organic reaction is performed in the thin film fluid.
Abstract: This invention relates to a process for producing an oligomeric product by the oligomerization of at least one olefinic compound by contacting the at least one olefinic compound with an oligomerization catalyst in an aliphatic liquid medium at a reaction temperature of at least 50° C. The catalyst comprises the combination of a source of a transition metal; and a ligating compound of the formula (R1)m X1 (Y) X2 (R2)m.
Type:
Grant
Filed:
June 13, 2005
Date of Patent:
June 21, 2011
Assignee:
Sasol Technology (Pty) Limited
Inventors:
John Thomas Dixon, Esna Killian, Annette Bollmann, Richard Neil Walsh, Matthew James Overett, Kevin Blann, David Hedley Morgan
Abstract: Catalytic complexes including a metal atom having anionic ligands, at least one nucleophilic carbine ligand, and an alkylidene, vinylidene, or allenylidene ligand. The complexes are highly stable to air, moisture and thermal degradation. The complexes are designed to efficiently carry out a variety of olefin metathesis reactions.
Abstract: Catalytic hydrogenation of a double bond, notably a C?C or C?N double bond, is carried out using a homogenous catalyst which is a complex of rhodium or other transition metal containing at least one ligand which is a nitrogenous organic base. Preferably the complex is phosphorus-free and the ligand is a bicyclic base having formula where R1 and R4 are hydrocarbon chains. R1 preferably is a saturated chain of two carbon atoms and R4 preferably is a saturated chain of three to five carbon atoms.
Abstract: A process for purifying monoterpenes, including the steps of: providing a monoterpene comprising alpha terpinene of about 90% or greater purity and comprising an oxygen-containing impurity compound selected from the group consisting of 1,8-cineole, 1,4,-cineole, and mixtures thereof; providing an activated silica gel preparative chromatographic column; contacting the monoterpene with the column, wherein the oxygen-containing impurity compounds are retained on the column; recovering monterpenes depleted of oxygen-containing impurity compounds from the column by applying a pressure above atmospheric from a gas source without the use of a solvent; and removing the oxygen-containing impurity compounds by contacting the column with an alcohol.
Abstract: Catalytic complexes including a metal atom having anionic ligands, at least one nucleophilic carbene ligand, and an alkylidene, vinylidene, or allenylidene ligand. The complexes are highly stable to air, moisture and thermal degradation. The complexes are designed to efficiently carry out a variety of olefin metathesis reactions.
Abstract: A fiber reaction process whereby reactive components contained in immiscible streams are brought into contact to effect chemical reactions and separations. The conduit reactor utilized contains wettable fibers onto which one stream is substantially constrained and a second stream is flowed over to continuously create a new interface there between to efficiently bring about contact of the reactive species and thus promote reactions thereof or extractions thereby. Co-solvents and phase transfer catalysts may be employed to facilitate the process.
Abstract: The object of the present invention is to provide a process capable of producing cycloalkanol and/or cycloalkanone in excellent selectivity by oxidizing cycloalkane in a good degree of conversion. The present invention relates to a process for producing cycloalkanol and/or cycloalkanone, which comprises oxidizing cycloalkane with oxygen at 25 to 140° C. in the presence of mesoporous silica containing the group 8 and/or 9 element in the periodic table, wherein the content of phosphorus atom in the mesoporous silica is 0 to 4 mol % based on silicon atom. Said element is preferably cobalt and said mesoporous silica is preferably MCM-41.
Abstract: The present invention provides compounds of Formula I: wherein: R1 is a label (e.g., a detectable groups; an anti-tumor agent)s; L is present or absent and when present is a linking group; and x represents an integer from 1 to 10; or a pharmaceutically acceptable salt thereof. The compounds are useful for, among other things, identifying cysteine sulfenic acids in proteins and monitoring oxidative damage in proteins and cells.
Type:
Grant
Filed:
October 11, 2005
Date of Patent:
November 13, 2007
Assignee:
Wake Forest University Health Sciences
Inventors:
Leslie B. Poole, S. Bruce King, Jacquelyn S. Fetrow
Abstract: This invention provides novel compounds derived from a marine sponge, Adocia sp., that specifically modulat kinesin activity by targeting the kinesin motor domain and mimicking the activity a microtubule. The compounds act as potent anti-mitogens are useful in a wide variety of in vitro and in vivo applications.
Type:
Grant
Filed:
November 27, 2002
Date of Patent:
August 17, 2004
Assignee:
The Regents of the University of California
Inventors:
Lawrence S. B. Goldstein, David John Faulkner, Roman Sakowicz, Michael S. Berdelis, Christine L. Blackburn, Cordula Hopmann
Abstract: Trans-2,2,6-trimethylcyclohexyl methyl ketone, including (1S,6R)-2,2,6-trimethylcyclohexyl methyl ketone represented by the formula (1a):
and (1R,6S)-2,2,6-trimethylcyclohexyl methyl ketone represented by the formula (1b):
are useful components in a perfume composition. A process for producing the same is also described. A unique eucalyptus, mint-like and white floral perfume material is provided using the ketone compounds disclosed in the present invention. The process of the present invention produces the optically active ketone compounds having optical purity up to at least 98.0 % e.e.
Abstract: Poly(3-cyclopropyl-3-hydroxypropionates) (I) which are useful for the preparation of vinylcyclopropane and cyclopropylacetylene are disclosed. Methods for the preparation of a variety of intermediates obtained from (I) such as 3-cyclopropyl-3-hydroxypropionic acid and esters and salts thereof, 3-cyclopropylacrylic acid, and vinylcyclopropane also are disclosed.
Type:
Application
Filed:
April 16, 2003
Publication date:
November 13, 2003
Inventors:
John Clark Hubbs, Theresa Sims Barnette, Neil Warren Boaz
Abstract: A novel supported bimetallic catalyst comprises a group VIII metal such as platinum, and tin, at least a portion of which interacts strongly with the group VIII metal in the catalyst in the reduced state. In the partially oxidized state, the catalyst of the invention contains at least 10% of tin in the form of a reduced tin species with oxidation state 0, said species having an isomer shift in the range 0.80 to 2.60 mm/s and a quadrupolar splitting in the range 0.65 to 2.00 mm/s. The invention also concerns the preparation of said catalyst, and processes using said catalyst for transforming hydrocarbons into aromatic compounds, such as gasoline reforming processes and aromatic production processes.
Type:
Grant
Filed:
August 23, 2001
Date of Patent:
August 12, 2003
Assignee:
Institut Francais du Petrole
Inventors:
Fabienne Le Peltier, Blaise Didillon, Jean-Claude Jumas, Josette Olivier-Fourcade
Abstract: The present invention relates to a process for separating the isoprene, 1,3-pentadiene and dicyclopentadiene from a C5 cuts, comprising dimerization of the cyclopentadiene and selective catalytic hydrogenation. The second extractive rectification step can be omitted, because the alkynes are removed through selective catalytic hydrogenation prior to the extractive rectification. As a result, the solvent-recovering units can be simplified, and thus the process as a whole can be optimized. Correspondingly, the investment and energy consumption, the operation cost, and finally the production cost can be substantially reduced.
Type:
Application
Filed:
September 27, 2002
Publication date:
May 29, 2003
Inventors:
Baoliang Tian, Puyang Li, Chunpeng Du, Hongfen Xu, Haiqiang Feng, Jingmin Hu, Jidong Gao, Ming Ma
Abstract: The invention relates to structural subunits called “synthons” which are suitable for use in the design and manufacture of molecular nanostructures, machines, and devices.
The synthon comprises polyhedra units and other species which exhibit rigid structural frameworks, the availability of stereo- and regiochemically directed substitution patterns, synthetic availability and accessability with substitutional control, diversity of available structural arrangements with said polyhedra units and related species, and connecting means which function to join adjacent synthons.
Abstract: This invention provides novel compounds derived from a marine sponge, Adocia sp., that specifically modulat kinesin activity by targeting the kinesin motor domain and mimicking the activity a microtubule. The compounds act as potent anti-mitogens are useful in a wide variety of in vitro and in vivo applications.
Type:
Grant
Filed:
November 28, 2000
Date of Patent:
December 3, 2002
Assignee:
The Regents of the University of California
Inventors:
Lawrence S.B. Goldstein, David John Faulkner, Roman Sakowicz, Michael S. Berdelis, Christine L. Blackburn, Cordula Hopmann
Abstract: This invention relates to a process for reactivating a dehydrocyclodimerization catalyst. Dehydrocyclodimerization catalysts which contain an aluminum phosphate binder can be deactivated when they are exposed to hydrogen at temperatures above 500° C. The instant process restores substantially all of the catalyst's lost activity. The process involves treating the catalyst with a fluid comprising water and drying the catalyst. The process is employed particularly advantageously in combination with coke removal for reactivating catalysts that contain coke deposits and that have also been hydrogen deactivated. This invention also relates to a method of producing a dehydrocyclodimerization catalyst that is resistant to hydrogen deactivation.
Type:
Application
Filed:
March 29, 2002
Publication date:
October 17, 2002
Inventors:
Kerry O. Boehner, Karl Z. Steigleder, Veronica Marie Godfrey, Paul R. Cottrell, Earl S. Lemberger
Abstract: The present invention relates to a process for the preparation of highly purified tetracyclododecenes, which can be a raw material of cycloolefin (co)polymers possessing excellent characters concerning their optical property, high transparency, heat resistance, and oil absorbency, from an inexpensive raw material of crude DCPD in a stable, continuous, and longstanding process. In the continuous preparation of tetracyclododecenes described in the present invention, it is possible to employ crude dicyclopentadiene, that is, dicyclopentadiene having low purity, as a raw material. It is also possible to produce highly purified tetracyclododecenes by maintaining the ratios of one, two, or three compounds selected from the group comprising isoprene, piperylene, and 1-methyl-2-norbornenes shown by the general formula (4) against the sum of dicyclopentadiene and cyclopentadiene within the specified ranges, wherein all these substances are contained in the raw material that are fed into a reactor.
Abstract: A method for synthesizing tetramethylcyclopentadiene from 2,3-dibromobutane is described. A 2-bromo-2-butene Grignard is reacted with an ethyl formate to produce a 3,5-dimethyl-2,5-heptadiene-4-ol magnesium bromide which is then quenched with acetic acid to produce 3,5-dimethyl-2,5-hepadiene-4-ol.
Type:
Grant
Filed:
November 24, 1998
Date of Patent:
May 14, 2002
Assignee:
Boulder Scientific Company
Inventors:
Jeffrey M. Sullivan, Richard D. Crawford
Abstract: This invention provides novel compounds derived from a marine sponge, Adocia sp., that specifically modulat kinesin activity by targeting the kinesin motor domain and mimicking the activity a microtubule. The compounds act as potent anti-mitogens are useful in a wide variety of in vitro and in vivo applications.
Type:
Grant
Filed:
January 6, 1999
Date of Patent:
March 27, 2001
Assignee:
The Regents of the University of California
Inventors:
Lawrence S. B. Goldstein, David John Faulkner, Roman Sakowicz, Michael S. Berdelis, Christine L. Blackburn, Cordula Hopmann
Abstract: A cyclopentadienyl metal salt is prepared by reacting a cyclopentadiene and a metal hydride in the presence of an amine compound. Furthermore, a derivative of a cyclopentadiene in which a phenyl group is bonded to its cyclopentadienyl moiety through an element of the 14 group of the Periodic Table is prepared using such a reaction.
Abstract: Process for converting a geminally substituted cyclopentadiene containing 2-6 substituents into a non-geminally substituted cyclopentadiene by reacting the geminally substituted cyclopentadiene with a base, sodium or potassium at a temperature of 0-200.degree. C. The invention also relates to mixtures of non-geminally substituted cyclopentadienes obtained by means of this process.
Type:
Grant
Filed:
March 3, 1999
Date of Patent:
October 24, 2000
Assignee:
DSM N.V.
Inventors:
Gerardus J. M. Gruter, Johannes A. M. van Beek
Abstract: Polysubstituted cyclopentadiene compound, in which at least one substituent is of the form -RDR'.sub.n, in which R is a bonding group, D is a hetero atom selected from group 15 or 16 of the Periodic System of the Elements, R' is a substituent and n is the number of R' groups bonded to D, and in that at least one further substituent is a branched alkyl group.
Type:
Grant
Filed:
November 2, 1998
Date of Patent:
September 26, 2000
Assignee:
DSM N.V.
Inventors:
Gerardus J. M. Gruter, Johannes A. M. van Beek, Richard Green, Edwin G. IJpeij
Abstract: A thermosetting resin is formed from cyclopentadiene and a propargyl halide. The resin can be used with carbon fibers to form a carbon-carbon composite.
Abstract: The invention relates to an improved process which, starting from 2-cyclopenten-1-ones substituted in the 3-position, gives a high yields of 1,3-dialkylcyclopentadienes which can be directly metallated and reacted to give the corresponding 1,3-dialkylcyclopentadienyl-transition metal complexes.
Abstract: The specification discloses terpene-based solvent compositions which comprise diterpenes as a major component and a minor amount of monoterpenes. The mixtures exhibit solvent properties similar to monoterpenes but have flash points high enough to be classified as combustible rather than flammable materials.
Type:
Grant
Filed:
March 18, 1996
Date of Patent:
December 8, 1998
Assignee:
Arizona Chemical Company
Inventors:
Alexander J. Conte, Bobby G. Johnson, Raymond H. Jones, Claude F. Phillips, Jr.
Abstract: Terpene dimer compositions are provided which dry into a hard, tack free film upon exposure to air. The compositions include a terpene dimer having the molecular formula C.sub.20 H.sub.32 and contain at least one double bond. The terpene dimer is derived from a naturally occurring monoterpene, or mixtures thereof, having the molecular formula C.sub.10 H.sub.16. In an another embodiment the compositions, in addition to the terpene dimer, include isomers of the monoterpenes. The compositions are substantially free of higher terpene oligomers having molecular formulas greater than C.sub.20 H.sub.32. Processes for making the terpene dimer compositions are also provided. Advantageous utilization of these compositions is as a diluent, solvent or component in coating, adhesive, alkyd or ink formulations, as an environmentally safe non-toxic material.
Type:
Grant
Filed:
July 9, 1996
Date of Patent:
March 3, 1998
Assignee:
Arizona Chemical Company
Inventors:
Claude Frank Phillips, Jr., James William Booth
Abstract: A method for producing cyclopentadienes which comprises the step of cyclodehydration of an unsaturated carbonyl compound having a specific chemical structure in a vapor phase in the presence of a specific solid acid catalyst. The cyclopentadienes of the invention can be produced in a high yield from inexpensive starting materials through a simplified reaction process and are useful as intermediate compounds for organic synthesis.
Abstract: Phellandrene is difficult to separate from limonene by conventional distillation or rectification because of the proximity of their boiling points. Phellandreneecan be readily separated from limonene by extractive distillation. Effective agents are o-cresol, tripropylene glycol and isophorone.
Abstract: Phellandrene is difficult to separate from limonene because of the proximity of their boiling points. They are readily separated by azeotropic distillation. Effective agents are ethanol, dioxolane and acetonitrile.