Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 7396874 | Cationic or amphoteric copolymers prepared in an inverse emulsion matrix and their use in preparing cellulosic fiber compositions A papermaking method and a composition which utilize, as a drainage aid, a water-soluble cationic or amphoteric copolymer prepared via a water-in-oil polymerization technique that, absent a cross-linking agent, is characterized by a Huggins' constant (k′) determin... | 07/08/2008 |
| 7396886 | Process for making copolymers of maleic anhydride and alkyl vinyl ether of high specific viscosity A process for making high specific viscosity copolymers of maleic anhydride and an alkyl vinyl either having as specific viscosity of at least 7, preferably 10-50, are made by copolymerizing maleic anhydride and an alkly vinyl ether monomers in the presence of added... | 07/08/2008 |
| 7306700 | Process for the production of paper The present invention relates to a process for the production of paper from a suspension containing cellulosic fibres, and optional fillers, comprising adding to the suspension drainage and retention aids comprising a cationic organic polymer and anionic micropartic... | 12/11/2007 |
| 7250448 | Anionic copolymers prepared in an inverse emulsion matrix and their use in preparing cellulosic fiber compositions A papermaking method and a composition which utilize, as a drainage aid, a water-soluble anionic copolymer prepared via a water-in-oil polymerization technique that, absent a cross-linking agent, is characterized by a Huggins' constant (k′) determined in 0.01M NaC... | 07/31/2007 |
| 6914112 | Ethylene copolymer and ethylene/α-olefin copolymer composition and propylene polymer composition both containing the ethylene copolymer An ethylene-based copolymer is useful as a modifier for resins, e.g., polypropylene, and can be used in an ethylene/α-olefin copolymer composition containing the same ethylene-based copolymer. The inventive copolymer is characterize by: (a-1) having temperature (Tm... | 07/05/2005 |
| 6881801 | Method for feeding catalysts In a method of adding catalysts for the polymerization of C2-C20-olefins, the catalyst is firstly introduced into a container A and the cocatalysts used are subsequently mixed with an inert solvent in a container B, and the contents of the cont... | 04/19/2005 |
| 6762266 | Phase retarder The present invention provides a phase retarder made of a copolymer prepared by polymerizing one non-cyclic olefin monomer (A) selected from ethylene and α-olefin compound having 3 to 20 carbon atoms, one cyclic olefin monomer (B) selected from cyclic olefin compou... | 07/13/2004 |
| 6716931 | Vulcanized solid rubber There is provided vulcanized solid rubber, which comprises a vulcanized product of an oil-extended copolymer comprising: (i) 100 parts by weight of an ethylene-α-olefin-non-conjugated diene copolymer satisfying the following requirements (1) to (4), and ... | 04/06/2004 |
| 6680361 | Shear thinning ethylene/-olefin interpolymers and their preparation Shear-thinning ethylene/-olefin and ethylene/-olefin/diene monomer interpolymers that do not include a traditional branch-inducing monomer such as norbornadiene are prepared at an elevated temperature in an atmosphere that has little or no h... | 01/20/2004 |
| 6627714 | Method for producing an olefin type copolymer having a cyclic structure An olefinic copolymer having a cyclic structure is prepared by copolymerizing a) ethylene (M1) and b) dicyclopentadiene or tricyclopentadiene (M2), and, optionally c) a cyclic olefin (M3), in the presence of a catalyst which contains a metallocene compoun... | 09/30/2003 |
| 6620895 | Processing polyethylenes Polyethylenes made from ethylene and a series of -olefins using a catalyst that copolymerizes ethylene and -olefins usually have excellent melt processing characteristics, especially in uses where high zero shear viscosity and low high shear... | 09/16/2003 |
| 6596832 | Polymer compositions useful as flow improvers in cold fluids A drag-reducing polymer capable of dissolving even in cold fluids is described, along with a method for manufacturing said drag-reducing polymer. The drag-reducing polymer has at least one alpha-olefin monomer with between a four and nine carbon chain len... | 07/22/2003 |
| 6552149 | Propylene terpolymers A process for producing terpolymers of propylene, comprising a) feeding into a slurry reactor a reaction mixture containing 50-85 w-% of propylene, 1-10 w-% of ethylene, 15-40 w-% of another C4 -C8 alpha-olefin, a catalyst system mai... | 04/22/2003 |
| 6465584 | Elastomeric copolymer and process for the preparation thereof The invention relates to an elastomeric copolymer derived from components comprising a) ethylene, b) an -olefin, c) a non-conjugated polyene (C) having one C.dbd.C bond that is copolymerizable using a Ziegler-Natta catalyst, and d) optionally a non... | 10/15/2002 |
| 6462161 | Polyolefin composition with molecular weight maximum occurring in that part of the composition that has the highest comonomer content The invention relates to a polyolefin copolymer composition produced with a catalyst having a metallocene, complex in a single reactor for the polymer of an -olefin monomer with one or more olefin comonomers, and a molecule weight maximum which occ... | 10/08/2002 |
| 6451946 | Copolymer, process for the production thereof, and molded article thereof A copolymer of (a)ethylene and/or an -olefin, (b) a cyclic olefin and (c) an alkenyl aromatic hydrocarbon, having acyclic olefin content of 0.01 to 66 mol % and a styrene content of 3 to 99 mol %, wherein the styrene content is more than a half of ... | 09/17/2002 |
| 6420506 | -olefin-based copolymer, process for the production thereof, and molded article comprising the same An -olefin-alkenyl aromatic hydrocarbon-diene copolymer, a process for producing the copolymer, which comprises copolymerizing an -olefin, a mono-alkenyl aromatic hydrocarbon and a diene in the presence of a specific catalyst, and a molded a... | 07/16/2002 |
| 6417300 | Terpolymerization Disclosed are terpolymers and processes of terpolymerization, wherein the terpolymer comprises units derived from ethylene, 1-pentene and another alpha-olefin containing at least six carbon atoms.... | 07/09/2002 |
| 6388051 | Process for selecting a polyethylene having improved processability A process for selecting and extruding a copolymer having improved extrusion processability comprising (a) selecting one or more copolymers of ethylene and one or more alpha-olefins having 3 to 12 carbon atoms, each of said copolymers having essentially no... | 05/14/2002 |
| 6365682 | Process for the production of propylene terpolymers A process for producing terpolymers of propylene, comprising a) feeding into a slurry reactor a reaction mixture containing 50-85 w-% of propylene, 1-10 w-% of ethylene, 15-40 w-% of another C4 -C8 alpha-olefin, a catalyst system mai... | 04/02/2002 |
| 6316560 | Method for producing cycloolefin polymers The invention relates to a method for producing a cycloolefin copolymer by polymerization of 0.1-99.0 wt %, with respect to the total amount of monomers, of at least one polycyclic, 0-99.9 wt. %, with respect to the total amount of monomers, of at least o... | 11/13/2001 |
| 6300447 | Ethylene--olefin-nonconjugated polyene random copolymer An ethylene--olefin-nonconjugated polyene random copolymer obtained by polymerizing the following components (a), (b) and (c) in the presence of a catalyst comprising a transition metal complex having at least one cyclopentadienyl skeleton and sati... | 10/09/2001 |
| 6288193 | Ethylene-based polymer An ethylene-based polymer comprising ethylene and at least one addition polymerizable monomer containing a vinyl compound (A) described below, wherein the ethylene-based polymer has a melting temperature (Tm) of 119 ° C. or lower and, the melt index MI (... | 09/11/2001 |
| 6281316 | Enhanced crosslinking terpolymer A polymer of the invention comprising the comonomers ethylene, one or more alpha-olefins having 3 to 20 carbon atoms, and one or more cyclic dienes having up to 30 carbon atoms, said polymer having a density of at least 0.890 gram per cubic centimeter; lo... | 08/28/2001 |
| 6262215 | Elastomeric copolymer of ethylene Elastomeric ethylene/propylene or ethylene/propylene/polyene copolymers containing small amounts of one or more -olefins are prepared by a slurry process wherein the polymerization reaction is carried out in a mixture of liquid propylene and alpha-... | 07/17/2001 |
| 6255425 | Syndiotactic polypropylene copolymer and extruded polypropylene articles A syndiotactic polypropylene copolymer is disclosed which comprises 70 to 99.9 mole % of propylene and 0.1 to 30 mole % of an olefin other than propylene; in the 13 C-NMR spectrum of the syndiotactic polypropylene copolymer, a ratio of the inte... | 07/03/2001 |
| 6221984 | Random propylene copolymer Random copolymers of propylene with ethylene and at least one C4 -C10 -alk-1-ene, having a melting point, determined by the DSC method, of less than or equal to 135° C., are obtainable by polymerization of propylene, ethylene and at... | 04/24/2001 |
| 6218488 | Polymerization process for olefin copolymers using bridged hafnocene compounds The invention is a polymerization process for ethylene copolymers having a density less than 0.915 comprising contacting ethylene, one or more -olefin monomer, and optionally one or more diene monomer, with a catalyst composition comprising the rea... | 04/17/2001 |
| 6207779 | Ring-opened polymer The present invention provides a ring-opened polymer, which is prepared by reacting at least one pericyclic olefin elected from those represented by formulae (I) and (II) through ring-opening metathesis polymerization ##STR1## wherein A and B may be the s... | 03/27/2001 |
| 6207773 | Metallocene catalyst for preparing olefin polymer A metallocene complex in which the cyclopentadienyl group is substituted with an alkanediyl silyl group. The yield of the metallocene complex is high, and it can be used as the catalyst for preparing high molecular weight olefin polymers.... | 03/27/2001 |
| 6194526 | Processes that produce polymers A process to produce a polymer is provided. The process comprises polymerizing monomers wherein the monomers comprise ethylene, 1-butene, and 1-hexene. The total amount of 1-butene and 1-hexene in the polymer is less than 10 mole percent of the polymer, a... | 02/27/2001 |
| 6191246 | Ethylene-pentene-hexene copolymer, process for its preparation and use for the production of films The invention provides a polymer which is a polymerization product obtained by polymerizing at least ethylene, 1-pentene and 1-hexene; and a process for producing a polymer by reacting at least ethylene, 1-pentene and 1-hexene in a reaction zone at a pres... | 02/20/2001 |
| 6180738 | Production of a sticky polymer using an improved carbon black There is provided a polymerization, especially a gas phase polymerization, of a sticky polymer in the presence of a catalyst under polymerization conditions using carbon black as an inert particulate material, the improvement comprises conducting said pol... | 01/30/2001 |
| 6180554 | Catalyst system for the production of olefin (co)polymers The present invention relates to a catalyst system comprising: a) an organoaluminum compound, b) a metal compound selected from subgroups IV to VI of the periodic system, c) a reactivator in a molar ratio of 0.5 to 100 relative to compound b), wherein said reactiva... | 01/30/2001 |
| 6084047 | Elastomeric amorphous olefin terpolymer The present invention is an elastomeric polyolefin terpolymer comprising about 5 to 25 weight percent ethylene units, from greater than about 5 to about 40 weight percent hexene units, and about 35 to less than about 90 weight percent propylene units, whe... | 07/04/2000 |
| 6060164 | Flocculating or viscosifying compositions and their production and use Primary polymer particles having a size at least 90% below 10 μm and which contain water soluble and water insoluble polymer are made by reverse phase polymerisation of a water soluble ethylenically unsaturated monomer or monomer blend with cross linking... | 05/09/2000 |
| 6046287 | Process for the preparation of elastomeric copolymers of ethylene Elastomeric ethylene/propylene or ethylene/propylene/-polyene copolymers containing small amounts of one or more -olefins are prepared by a slurry process wherein the polymerization reaction is carried out in a mixture of liquid propylene and alpha... | 04/04/2000 |
| 5866665 | Copolymers of ethylene and germinally disubstituted olefins Substantially random ethylene copolymers containing at least 3.0 mole percent of geminally disubstituted olefin monomers are described. The geminally disubstituted olefin monomers can be represented by the generic formula R1 =R2 (R | 02/02/1999 |
| 5807946 | Vehicle parts comprising ethylene/2-olefin/vinylnorbornene elastomeric polymers Motor vehicle brake parts based on an ethylene, alpha-olefin, vinyl norbornene elastomeric polymer are manufactured with more efficiency due to brake part compounds having lower viscosity, faster and fuller cures than ethylene, alpha-olefins, diene monome... | 09/15/1998 |
| 5780567 | Syndiotactic terpolymers of styrene Syndiotactic terpolymers of styrene comprising repetitive units deriving from: a) 99.5-60% in moles of styrene; and b) 0.5-40% in moles of vinyltoluene having a weight average molecular weight of more than 20,000 and a stereoregularity of the syndiotactic type... | 07/14/1998 |
