Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 7906583 | Radial block copolymers and adhesives based thereon with improved die-cutting performance Improved adhesives are provided through the use of styrenic radial block copolymers, containing at least 40 wt % diblock copolymers, the adhesives have improved adhesive properties and a reduced elastic behavior under die-cutting conditions. Compared to conventional... | 03/15/2011 |
| 7893295 | Hydrogenation of benzene polycarboxylic acids or derivatives thereof A process for hydrogenating benzenepolycarboxylic acids or derivatives thereof, such as esters and/or anhydrides, by bringing one or more benzenepolycarboxylic acids or one or more derivatives thereof into contact with a hydrogen-containing gas in the presence of on... | 02/22/2011 |
| 7435598 | Catalyst testing apparatus and process An apparatus and process are described in which a plurality of preloaded catalyst samples tubes can be serially and automatically moved from a support to a reaction zone where each catalyst sample can be heated and a preheated reagent feed contacted with the sample ... | 10/14/2008 |
| 7425591 | Elastomeric composition The present invention is a composition including an isobutylene-based copolymer and polybutene. The copolymers may be mixed with an exfoliating compound and clay, the entire composition forming a nanocomposite. The clay may or may not have an additional exfoliating ... | 09/16/2008 |
| 7402636 | Method and apparatus for decreasing polymer deposition The disclosure provides a slurry polymerization system and method to decrease polymer deposition on reactor surfaces using an oxygenate such as alcohol (16) supplied to the polymerization medium (32) separate from the catalyst feed (34). ... | 07/22/2008 |
| 7385015 | Trialkylaluminum treated supports This invention relates to a process to prepare a trialkylaluminum treated support comprising: 1) combining a support with first trialkylaluminum compound(s), where the alkyl groups have at least 2 carbon atoms; then 2) calcining the combination of the support and th... | 06/10/2008 |
| 7273960 | Fluid bed oxygenates to olefins reactor apparatus and process of controlling same A reactor apparatus and related method for controlling at least one process variable in a circulating fluid bed oxygenates to olefins reactor system comprising a riser are provided. The process variable is selected from at least one of (i) space velocity, (ii) avera... | 09/25/2007 |
| 7257451 | Method for creating a linear programming model of an industrial process facility A method for creating a linear programming (LP) model of an industrial process facility is disclosed. The model may be used for interactively simulating and/or optimizing the operation of the facility to facilitate feedstock selection and/or other economic analyses.... | 08/14/2007 |
| 7244871 | Process and apparatus for removing coke formed during steam cracking of hydrocarbon feedstocks containing resids A process for decoking of a process that cracks hydrocarbon feedstock containing resid and coke precursors, wherein steam is added to the feedstock to form a mixture which is thereafter separated into a vapor phase and a liquid phase by flashing in a flash/separatio... | 07/17/2007 |
| 7232868 | Methods of delivering catalyst systems for propylene polymerization A polymerization process is provided. For example, a polymerization process is described, including providing a catalyst slurry having a metallocene catalyst and a first oil, providing a transport medium including a second oil and combining the transport medium and ... | 06/19/2007 |
| 7223823 | Catalyst system and process This invention relates to a process of polymerizing ethylene in a reactor comprising contacting a catalyst system comprising a supported chromium catalyst and an aluminum alkyl cocatalyst, where the catalyst and cocatalyst are contacted by cofeeding the catalyst and... | 05/29/2007 |
| 7217676 | Hydrophobization and silica for supported catalyst This invention relates to a catalyst support comprising the result of the combination of: (a) a support comprising hydroxyl groups; (b) a capping agent comprising a boron containing Lewis acid; and (c) an ionic activator, where... | 05/15/2007 |
| 7214843 | Treating oxygenate containing feedstreams in the conversion of oxygenates to olefins This invention is directed to removing contaminants from an oxygenate-containing feedstream for an oxygenate to olefin reaction system. Oxygenate feeds used in the conversion of oxygenates to olefins, and which contain contaminants, are heated to form a vapor stream... | 05/08/2007 |
| 7205363 | Polymerization processes using antistatic agents The invention relates to a process for the polymerization of olefins using an antistatic agent. In particular, the invention relates to a polymerization process to produce propylene polymers using a supported metallocene catalyst system and an antistatic agent. The ... | 04/17/2007 |
| 7199273 | Selective hydrogenation of alkynes and/or diolefins A process for selectively removing alkynes and/or diolefins from a feedstock also containing olefins comprises contacting the feedstock with hydrogen in the presence of a catalyst composition. The catalyst composition comprises at least one metal component selected ... | 04/03/2007 |
| 7196148 | Cationic catalyst system A 3+ metal complex for coordination polymerization of olefins is disclosed. The precursor metal complex is stabilized by a anionic multidentate ligand and at least two monoanionic ligands. The multidentate ligand and the transition metal form a metallocycle having a... | 03/27/2007 |
| 7195746 | Interior surface modifications of molecular sieves with organometallic reagents and the use thereof for the conversion of oxygenates to olefins A method for making an organometallic treated molecular sieve is described in which a molecular sieve having at least one hydroxyl group and at least [AlO2] and [PO2] tetrahedral units and having an average pore dimension less than or equal to ... | 03/27/2007 |
| 7186875 | Conversion of oxygenates to olefins A process is described for converting an oxygenate-containing feedstock into one or more olefins in a reactor system including a plurality of fixed bed reactors each containing a catalyst composition comprising a molecular sieve and at least one metal oxide having a... | 03/06/2007 |
| 7163989 | Processes and apparatus for continuous solution polymerization This invention relates to processes and plants for continuous solution polymerization. Such plan and process include a pressure source, a polymerization reactor, downstream of said pressure source, pressure let-down device, downstream of said polymerization reactor,... | 01/16/2007 |
| 7153807 | Catalysts for selective hydrogenation of alkynes and alkadienes Catalysts have been discovered that are useful in hydrogenation reactions, and particularly for the selective hydrogenation of acetylene and/or methyl acetylene (MA) and/or propadiene (PD) in light olefin-rich feedstreams. These catalysts can selectively hydrogenate... | 12/26/2006 |
| 7115789 | Process for removal of alkynes and/or dienes from an olefin stream The present invention is a process for removing alkynes and/or dienes from an olefin product stream withdrawn from an oxygenate-to-olefins reactor. The process comprises hydrogenating a first olefin stream that has alkynes and/or dienes in the presence of excess hyd... | 10/03/2006 |
| 7045583 | Olefin polymerization catalyst system This invention relates to a catalyst precursor compound comprising a tridentate phenoxy-amide-amine group bound to a group 3 to 12 metal or lanthanide metal. In particular, this invention relates to a catalyst precursor compound represented by the formula: | 05/16/2006 |
| 7026040 | Oriented films from improved propylene polymers This invention relates generally to films made from crystalline polypropylene polymers. Specifically, this invention relates to films comprising crystalline polypropylene polymer compositions containing both propylene homopolymers and propylene copolymers. The compo... | 04/11/2006 |
| 7022770 | Polyethylene compositions for injection molding Polyethylene blend compositions suitable for injection molding, injection molded articles, and processes for injection molding articles are provided. The polyethylene compositions include a first polyethylene having a melt index of 0.1 to 3.0 g/10 min and a density ... | 04/04/2006 |
| 6924405 | Xylene isomerization A xylene isomerization process is disclosed in which any ethylbenzene in the feed is removed, either by dealkylation or isomerization, in a separate reactor upstream of the xylene isomerization reactor and the xylene isomerization catalyst is contained in the same r... | 08/02/2005 |
| 6906233 | Modified metalloaluminophosphate molecular sieves The invention is directed to a method for modifying a microporous metalloaluminophosphate molecular sieve, the method comprising the steps of a) introducing a compound containing at least one M-X group within the cages of said microporous molecular sieve; and b) rea... | 06/14/2005 |
| 6894179 | Metallocene compositions This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization. The metallocene compositions are generally those of the bridged bis(2-R3-4-phenylinde... | 05/17/2005 |
| 6893251 | Burner design for reduced NOx emissions A staged-air burner for use in furnaces such as in steam cracking. The burner includes a burner tube including (i) a downstream end, (ii) an upstream end for receiving fuel and air, flue gas or mixtures thereof from a primary air chamber, and (iii) a burner tip moun... | 05/17/2005 |
| 6884916 | Conversion of unsaturated chemicals to oligomers An oligomerization process in which hydrocarbon feedstocks are contacted with a hydrotreating catalyst in the absence of hydrogen and in the liquid phase. The catalyst is a heterogeneous catalyst selected from supported reduced metals, metals oxides, metal sulfides ... | 04/26/2005 |
| 6884914 | Olefin oligomerization This invention is to a method of oligomerizing an olefin feed stream. The olefin feed stream contains at least one C2 to C12 olefin to obtain an olefin feed stream and has less than 1,000 ppm by weight oxygenated hydrocarbon. The olefin is olig... | 04/26/2005 |
| 6838586 | Process for the synthesis of silicoaluminophosphate molecular sieves The invention is directed to a method for making a silicoaluminophosphate (SAPO) molecular sieve from a reaction mixture comprising components present in amounts sufficient to form the SAPO, the reaction mixture having a first pH. The method comprises the steps of: ... | 01/04/2005 |
| 6822057 | Olefin polymerization catalysts derived from Group-15 cationic compounds and processes using them Fluorinated amine compounds, R′iArF—ER2, where ArF is a fluoroaryl substituent, E is nitrogen or phosphorous, each R is independently a C1-C20 hydrocarbyl substituent, or the two R's may be connected to form an unsubst... | 11/23/2004 |
| 6818704 | Plasticized polypropylene thermoplastics The invention is directed to a plasticized polypropylene thermoplastic composition comprising a blend of A) from 50 to 99.9 wt % of a thermoplastic polymer derived from polypropylene, optionally with one or more copolymerizable monomer selected from C2-C | 11/16/2004 |
| 6750307 | Propylene polymers incorporating polyethylene macromers A polyolefin product is provided which comprises a branched olefin copolymer having an isotactic polypropylene backbone, polyethylene branches and, optionally, one or more comonomers. The total comonomer content of the branched olefin copolymer is from 0 to 20 mole ... | 06/15/2004 |
| 6740791 | Process for converting oxygenates to olefins with direct product quenching for heat recovery The present invention relates to a process for converting an oxygenate in a feedstock to olefins in an olefin-containing effluent. Heat is transferred from effluent to the feedstock. The effluent is then quenched to form a light product fraction and a heavy product ... | 05/25/2004 |
| 6699811 | Tailored zeolite bound zeolite catalyst and its use for hydrocarbon conversion There is provided a zeolite bound zeolite catalyst which does not contain significant amount of non-zeolitic binder and can be tailored to optimize its performance and a process for converting hydrocarbons utilizing the zeolite bound zeolite catalyst. The... | 03/02/2004 |
| 6670517 | Process for alkylating aromatics A process for alkylating aromatics is provided which comprises contacting an aromatic-containing feed with alkylating agent in the presence of a silica-bound ZSM-5 zeolite catalyst, wherein the ZSM-5 has a crystal size no greater than 0.05 micron, said co... | 12/30/2003 |
| 6660682 | Method of synthesizing molecular sieves The invention is directed to a method of synthesizing a molecular sieve. In particular, the invention is directed to a method for synthesizing a molecular sieve, especially a silicoaluminophosphate molecular sieve, in the presence of a templating agent an... | 12/09/2003 |
| 6645370 | Preparation of high silica zeolites bound by zeolite and use thereof This invention relates to a process for producing zeolite-bound high silica zeolites and the use of the zeolite-bound high silica zeolite produced by the process for hydrocarbon conversion. The process is carried out by forming an extrudable paste compris... | 11/11/2003 |
| 6642407 | Production, purification and polymerization of aromatic dicarboxylic acids This invention provides a process for purifying the crude aromatic dicarboxylic acids produced by oxidation of dialkyl aromatic hydrocarbons and for using the purified acids in the preparation of polyethylene terephthalate, polyethylene naphthalate and ot... | 11/04/2003 |
