Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 8178737 | Propylene production A process for producing propylene from ethylene and a feed stream comprising 1-butene, 2-butene, n-butane, and isobutane is disclosed. A butenes stream (1-butene and 2-butene) is produced from the feed stream by removing the paraffins. The butenes stream is reacted ... | 05/15/2012 |
| 8168562 | Preparation of palladium-gold catalysts A new method for preparing supported palladium-gold catalysts is disclosed. The method comprises sulfating a titanium dioxide support, calcining the sulfated support, impregnating the calcined support with a palladium salt, a gold salt, and an alkali metal or ammoni... | 05/01/2012 |
| 8142661 | Residual stream upgrading in a propylene oxide-styrene monomer process In the co-production of propylene oxide and styrene monomer, there is produced a sodium-containing heavy residue stream previously suitable only as a low grade fuel. In accordance with the invention, the heavy residue stream is mixed with a hydrocarbon and an aqueou... | 03/27/2012 |
| 8124805 | Allyl acetate hydroformylation process A process for the production of 4-acetoxybutyraldehyde is described. The process comprises reacting allyl acetate with a mixture of carbon monoxide and hydrogen in the presence of a solvent and a catalyst comprising a rhodium complex and a diphosphine. The diphoshin... | 02/28/2012 |
| 8119849 | Propylene production A propylene production process is disclosed. The process comprises (a) reacting a feed stream comprising isobutene in the presence of a skeletal isomerization catalyst to obtain an isomerized stream comprising C4 olefins; and (b) reacting the isomerized s... | 02/21/2012 |
| 8114671 | Method for quantifying permanganate-reducing compounds A method for quantifying the permanganate-reducing compounds (PRCs) in an acetic acid sample is disclosed. The method comprises establishing a correlation between permanganate absorbances of standard samples and their PRC contents and determining the PRC content of ... | 02/14/2012 |
| 8088963 | Dehydration of 1-phenyl ethanol A process for the production of styrene is described. The process comprises dehydrating 1-phenyl ethanol in the liquid phase in the presence of a para- and ortho-toluenesulfonic acid mixture. The ratio of para-toluenesulfonic acid to ortho-toluenesulfonic acid is fr... | 01/03/2012 |
| 8080678 | Purification of propylene oxide The invention is a method of purifying propylene oxide containing 25-100 ppm aldehyde impurities. The method comprises contacting the propylene oxide in the liquid phase with an amine-functionalized ion exchange resin, and recovering a purified propylene oxide produ... | 12/20/2011 |
| 8067655 | Diisobutylene process This invention is a process for producing diisobutylene from isobutylene. The process comprises first contacting a sulfonic acid resin with a reaction feed comprising isobutylene and tertiary butyl alcohol to produce a product stream comprising diisobutylene, isobut... | 11/29/2011 |
| 8067634 | Process for producing allyl acetate A process for producing allyl acetate is disclosed. The process comprises reacting propylene, acetic acid, and oxygen in the presence of a supported palladium catalyst in an adiabatic reactor. ... | 11/29/2011 |
| 7696367 | Direct epoxidation process using a mixed catalyst system The invention is a process for epoxidizing an olefin with hydrogen and oxygen in the presence of a catalyst mixture containing a titanium or vanadium zeolite and a supported catalyst comprising palladium, gold, and an inorganic oxide carrier. Prior to its use in the... | 04/13/2010 |
| 7414164 | Diisobutylene process This invention is a process for producing diisobutylene from isobutylene. The process comprises first forming dry sulfonic acid resin by contacting water wet sulfonic acid resin catalyst with a first reaction feed comprising isobutylene under conditions effective to... | 08/19/2008 |
| 7138528 | Method for crystallizing N-vinyl-2-pyrrolidone A method for purifying N-vinyl-2-pyrrolidone (NVP) is disclosed. The method comprises crystallizing NVP in the presence of added water to produce purified NVP crystals and a mother liquor, and then isolating the purified crystals. In a preferred method, 0.5 to 4 wt.... | 11/21/2006 |
| 7060787 | Extraction of impurities from grafted polyolefins A process for purifying grafted polyolefins by extraction is disclosed. The purified grafted polyolefins have improved color and adhesion properties. The extraction is performed with an azeotropic solvent that is strong enough to extract impurities but does not caus... | 06/13/2006 |
