Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 6521713 | Vulcanizable EPDM containing rubber composition A rubber composition is disclosed containing an ethylene-propylene-nonconjugated diene copolymer rubber (or a blend of an ethylene-propylene-nonconjugated diene copolymer rubber and a diene rubber), a specific alkoxysilane compound, and amorphous silica p... | 02/18/2003 |
| 6485804 | Polyester compositions and laminates and processes for producing biaxially stretched polyester bottles The novel polyester (first polyester [A]) of the invention comprises dicarboxylic acid constituent units derived from at least one dicarboxylic acid selected from terephthalic acid, isophthalic acid and naphthalenedicarboxylic acid and diol constituent un... | 11/26/2002 |
| 6210765 | Adhesive polyethylene compositions and multi-layer laminated films using the same Disclosed is a specific adhesive polyethylene composition comprising [1] a modified ethylene/-olefin copolymer resin or elastomer obtained by modifying a specific ethylene/-olefin copolymer resin or elastomer, each of which comprises ethylen... | 04/03/2001 |
| 6130312 | Production of aromatic polyamide A process for producing an aromatic polyamide which comprises: (a) a dicarboxylic acid component which consists of 30-100 mol % of terephthalic acid and optionally 0-70 mol % of at least one dicarboxylic acid other than terephthalic acid, and (b) a diamine com... | 10/10/2000 |
| 6080828 | Polymerization catalyst and process for preparing an ethylene polymer An ethylene polymer having small values of Mw/Mn and Mz/Mw, a small proportion of long-chain branches, a high melt tension and a high swell ratio, and a process for preparing the ethylene polymer are disclosed. A solid titanium catalyst component obtained... | 06/27/2000 |
| 6063536 | Thermal fixing developer material and wax for electrophotography A thermal fixing developer material for electrophotography is provided. This developer material is adapted for use as a main component of an electrostatic toner, and the toner produced by using this developer material exhibits excellent release properties... | 05/16/2000 |
| 6063871 | Metallocene polyethylene blend compositions An ethylene type polymer composition comprising 20 to 90% by weight of an ethylene type polymer (A) and 80 to 10% by weight of an ethylene type polymer (B). The ethylene type polymer (A) is an ethylene polymer or a copolymer of ethylene and an -ole... | 05/16/2000 |
| 6054542 | Ethylene polymer and process for preparing the same An ethylene polymer having small values of Mw/Mn and Mz/Mw, a small proportion of long-chain branches, a high melt tension and a high swell ratio and a process for preparing the same by polymerizing ethylene in the presence of an ethylene polymerization c... | 04/25/2000 |
| 6040407 | Chain polyene group-containing norbornene compound and unsaturated ethylene copolymer using the same The chain polyene-group containing norbornene compound of the invention is represented by the formula [I]: ##STR1## wherein n is an integer of 1 to 5, R1 is an alkyl group of 1 to 5 carbon atoms, and R2 and R3 are eac... | 03/21/2000 |
| 6037411 | Acoustic vibrational material of fiber reinforcement with epoxy resin and epoxy-reactive polybutadiene This invention provides an acoustic vibrational material containing various fibers as the reinforcement material and having the epoxy resin as the matrix resin, wherein the epoxy resin is modified by a polybutadiene base elastomer containing not less than... | 03/14/2000 |
| 6034189 | Solid titanium catalyst component for olefin polymerization, process for preparation of the same, olefin polymerization catalyst and process for olefin polymerization Disclosed is a solid titanium catalyst component for olefin polymerization comprising magnesium, titanium, halogen, and (C) a phthalic diester represented by the following structural formula (i): ##STR1## wherein R is a branched hydrocarbon group of ... | 03/07/2000 |
| 6020444 | Process for preparing a cycloolefin copolymer The present invention relates to a process for preparing a cycloolefin copolymer by polymerization of at least one cyclic olefin and at least one acyclic olefin in the presence of a catalyst comprising at least one metallocene compound of the formula I, ... | 02/01/2000 |
| 5977277 | Acrylic ester, novel allyl ether, novel allyl carbonate, acrylic ester polymer, allyl ether polymer, allyl carbonate polymer and polymeric solid electrolyte The novel acrylic ester, allyl ether and allyl carbonate of the present invention are characterized by having the structures represented by the following general formulae (I) to (IV): The above acrylic ester, allyl ether and allyl carbonate are used as a ... | 11/02/1999 |
| 5972446 | Polyester bottle and method of removing adsorbates on the bottle The refillable polyester bottle of the invention has a mean crystallinity of 32 to 70% at the bottle body, a methanol adsorption of 1,500 ppm or less at the same portion and a paraxylene adsorption of 300 ppm or less at the same portion. Therefore, the bo... | 10/26/1999 |
| 5955209 | Thin-film electroluminescent device The thin-film electroluminescent device of the present invention comprises a thin film of a polyoxadiazole derivative represented by the formula: ##STR1## wherein each of X0 and Y0 independently represents a divalent organic gro... | 09/21/1999 |
| 5922888 | Process for removal of diol as impurity in cyclic carbonic acid ester A process for removing a diol from a cyclic carbonic acid ester containing the diol as an impurity, which comprises bringing a cyclic carbonic acid ester containing a diol as an impurity into contact with a synthetic zeolite in the presence of a chain car... | 07/13/1999 |
| 5880056 | Olefin polymerization catalyst and process for olefin polymerization Disclosed is an olefin polymerization catalyst comprising (A) a transition metal compound represented by the formula (I) R1 R2 MX2 (wherein M is a transition metal atom, R1 and R2 are each a cycloalka... | 03/09/1999 |
| 5869586 | Process for preparing a cycloolefin copolymer The present invention relates to a process for preparing a cycloolefin copolymer by polymerization of at least one cyclic olefin and at least one acyclic olefin in the presence of a catalyst comprising at least one metallocene compound of the formula I, ... | 02/09/1999 |
| 5869563 | Ethylene/-olefin/nonconjugated polyene copolymer rubber composition The ethylene/-olefin/nonconjugated polyene copolymer rubber composition of the present invention comprises in specified proportions a crystalline polyolefin resin (A) and an ethylene/-olefin/nonconjugated polyene copolymer rubber (B) co... | 02/09/1999 |
| 5863986 | Polymer alloy blend or composition and shaped articial obtained therefrom Polymer alloy comprising a) one or more cycloolefin copolymers and b) one or more types of core-shell particles and c) one or more block copolymers.... | 01/26/1999 |
| 5859272 | Transition metal compound, olefin polymerization catalyst component comprising the transition metal compound, olefin polymerization catalyst comprising the olefin polymerization catalyst component, and process for olefin polymerization Disclosed is a novel transition metal compound represented by the following formula: ##STR1## wherein M is a transition metal, X is halogen or the like, R1 is a hydrocarbon group or the like, R2 is an aryl group substituted with... | 01/12/1999 |
| 5859158 | Olefin polymerization catalyst and process for olefin polymerization Disclosed in an olefin polymerization catalyst comprising a transition metal compound having at least two transition metals in which at least one of said metals is bonded to a ligand having a cyclopentadienyl skeleton, at least one of said metals is selec... | 01/12/1999 |
| 5856386 | Process for crystal nucleation of crystalline thermoplastic resin A crystalline thermoplastic resin composition comprises a rosin acid metallic salt and a crystalline thermoplastic resin. Optionally, a compatibilizing agent may also be included. The rosin acid metallic salt, which acts as a crystal nucleating agent, inc... | 01/05/1999 |
| 5856399 | Thermoplastic elastomer composition The thermoplastic elastomer composition of the invention comprises a crystalline polyolefin resin (A), an olefin rubber (B), a hydrogenated styrene block copolymer (C), a softener (D), and optionally, a peroxide non-crosslinked type hydrocarbon rubber (E)... | 01/05/1999 |
| 5854349 | Cycloolefin copolymer composition Disclosed is a cycloolefin copolymer composition (C) obtained by copolymerizing an -olefin of two or more carbon atoms (a) and a specific cycloolefin (b) in the presence of an aromatic ring-containing vinyl hydrocarbon/conjugated diene copolymer or... | 12/29/1998 |
| 5854354 | Process for preparing propylene polymer composition and propylene polymer composition A process for preparing a propylene polymer composition comprising conducting multistage polymerization including a step (a) for preparing a propylene (co)polymer (a) and a step (b) for preparing an ethylene copolymer (b) in the presence of (A) a transiti... | 12/29/1998 |
| 5849826 | Semiaromatic polyamides, processes for preparing the same and compositions containing the same The semiaromatic polyamide of the invention comprises 40 to 90% by mol of (A) recurring units derived from terephthalic acid and an aliphatic diamine of 4 to 12 carbon atoms, 0 to 50% by mol of (B) recurring units derived from isophthalic acid and an alip... | 12/15/1998 |
| 5847227 | Method for producing aryl alkyl hydroperoxides A method for producing aryl alkyl hydroperoxides which comprises selectively oxidizing an aryl alkyl hydrocarbon having the formula: ##STR1## wherein P and Q are hydrogen or an alkyl and may be the same or different from each other; x is an integer o... | 12/08/1998 |
| 5844046 | Process for the preparation of olefin polymer A process for preparing an olefin polymer comprising the steps of: preparing an olefin polymer I! by polymerizing or copolymerizing an olefin in the presence of an olefin poymerization catalyst comprising a specific solid titanium catalyst component A... | 12/01/1998 |
| 5842505 | Multi-layer pipe A multi-layer pipe has an innermost layer formed of a butene polymer composition. At least one other layer is formed of a polyolefin resin composition comprising (A) 95-5 parts by weight of a polyolefin resin, (B) 5-95 parts by weight of a filler, and (C)... | 12/01/1998 |
| 5840815 | Gas-phase or slurry polymerization process for the preparation of an olefin polymer The present invention provides an ethylene copolymer comprising constituent units (a) derived from ethylene and constituent units (b) derived from an -olefin having 3 to 20 carbon atoms, the ethylene copolymer being characterized in that (A) the et... | 11/24/1998 |
| 5840808 | Process for preparing olefin polymer The present invention provides processes for preparing olefin polymers, by which olefin polymers composed of a propylene block copolymer component and an ethylene/-olefin copolymer component are directly prepared by polymerization and olefin polyme... | 11/24/1998 |
| 5840645 | Olefin polymerization catalyst and method for the polymerization of olefin using said olefin polymerization catalyst In accordance with the present invention, there are provided an olefin polymerization catalyst comprising an organoaluminum oxy-compound (A), a transition metal compound (B) and a hydrogenated organoaluminum compound (C); a solid olefin polymerization cat... | 11/24/1998 |
| 5840235 | Biaxially oriented film of high molecular weight polyethylene, process for preparing the same, surface-modified biaxially oriented film of high molecular weight polyethylene and process for preparing the same Biaxially oriented films from high molecular weight polyethylene are characterized by a gas permeable structure formed from random-arranged microfibrils. The films have coefficients of static friction and kinetic friction of not more than 1.0. The biaxial... | 11/24/1998 |
| 5837791 | Unsaturated copolymer of ethylene and process for preparing the same A novel unsaturated copolymer of ethylene comprises a random copolymer of (i) ethylene, (ii) an -olefin of 3 to 20 carbon atoms and (iii) at least one straight chain or branched chain nonconjugated triene or tetraene having one vinyl group in the m... | 11/17/1998 |
| 5830981 | Process for producing polyethylene terephthalate A process for producing a polyethylene terephthalate in which the amount of the oligomers, such as cyclic trimer etc., is lower and which causes metal mold staining to occur difficultly. The process comprises an esterification stage in which dicarboxylica... | 11/03/1998 |
| 5830954 | Method and apparatus for controlling polyolefine resin production plant The names of a plurality of polyolefine resins are previously registered as index data in a name data base. An optimal operational pattern is stored in an operational pattern table for each combination of the name of a current resin under production and t... | 11/03/1998 |
| 5815060 | Inductance element To realize compactness of an inductance element such as choke coil or the like, an inductance element is provided which is composed of a magnetic core having a central hollow portion defined by a magnetic alloy thin strip, and a lead line disposed to pass... | 09/29/1998 |
| 5811047 | Polyolefin packaging material for drug packaging, method of production thereof and containers for drug packaging The invention provides a polyolefin drug packaging material characterized in that the content, in the polyolefin, of substances containing 12 to 26 carbon atoms is not more than 150 ppm. The packaging material of the invention is useful because the risk o... | 09/22/1998 |
| 5811513 | Process for producing polyethylene naphthalate In the production of polyethylene naphthalate of the present invention, the esterification reaction between naphthalenedicarboxylic acid and ethylene glycol is conducted while causing water to be present in a reaction system from a start of reaction, in t... | 09/22/1998 |
