Famous Patents
British merchant Peter Durand invented the tin can in 1810.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7205354 | Resin-made mechanical element with excellent heat resistance and dimensional precision for optical disk drive The present invention provides: a resin-made mechanical element for optical disk drives, comprising a filler reinforced resin composition obtained by blending from 5 to 150 parts by weight of an inorganic filler in a flake form to 100 parts by weight of a resin comp... | 04/17/2007 |
| 7091307 | Composition for optical material The present invention relates to a composition for optical materials, comprising (a) a compound having in one molecule at least one structure represented by the following Formula 1: wherein R1 is a sin... | 08/15/2006 |
| 7067612 | Preformed compositions in shaped form Preformed compositions comprising sulfur-containing polymers in shaped form and the use of preformed compositions in shaped form to seal apertures. In certain embodiments, the preformed compositions comprise a sulfur-containing polymer and a blend of fillers wherein... | 06/27/2006 |
| 7026439 | Process for continuous production of polyarylene sulfide There is disclosed a process for continuously producing a polyarylene sulfide which comprises reacting a sulfur source with a dihalogenated aromatic compound in an aprotic organic solvent, characterized by maintaining the content of the dihalogenated aromatic compou... | 04/11/2006 |
| 6946540 | Method of measuring extent of curing of compacted poly(arylene sulfide) Disclosed herein is a process for preparing cured arylene sulfide polymers. A first curing vessel comprising a first agitator is used to cure a poly(arylene sulfide) compacted powder. The curing proceeds until the compacted powder reaches a melt flow rate within a t... | 09/20/2005 |
| 6939941 | Preparation of polysulfide compositions A process is provided for the manufacture of liquid polysulfide polymers. In particular, the process allows for making the liquid form of the polysulfide polymer directly and eliminates the need to first make a solid polysulfide polymer and then convert it to a liqu... | 09/06/2005 |
| 6747122 | Process for the preparation of polymeric sulfur compounds The invention relates to a simple process for the preparation of polymeric sulfur compounds with polythiocyclopentanediyl structural elements which are used as vulcanizing agents for diene rubbers. ... | 06/08/2004 |
| 6632805 | Methods for using water-stabilized organosilanes A method of dyeing and treating a substrate using a water-stabilized organosilane. A method of antimicrobially treating a food article. A method of antimicrobially coating a fluid container. A method of antimicrobially coating a latex medical article.... | 10/14/2003 |
| 6566488 | Polyarylensulfide, polyarylensulfide resin composition, method for producing polyarylensulfide Provided are a polyarylene sulfide having a chloroform soluble content of at most 0.5% by weight and having an inherent viscosity ηinh of from 0.05 to 0.4; a polyarylene sulfide resin composition comprising a polyarylene sulfide and an inorganic filler, ... | 05/20/2003 |
| 6538102 | Method for producing sulfur-containing polymers The present invention relates to a process for preparing sulfur-containing polymers from at least one sulfide and from at least one aromatic dihalogen compound in at least one solvent, where a) a mixture made from a sulfide and from a solvent is prepared ... | 03/25/2003 |
| 6310175 | Star-shaped block copolymer and production process therefor The present invention provides a new star-shaped block copolymer and a production process therefor, wherein the new star-shaped block copolymer has high heat resistance despite having a low viscosity. It has been found that a new star-shaped block copolym... | 10/30/2001 |
| 6201098 | Process for preparing sulphurous polymers The invention concerns a process for preparing linear or branched sulphurous polymers such as polyarylene sulphides, in particular polyphenylene sulphide, from an aromatic dihalide compound and a sulphide in a solvent, wherein a) the aromatic dihalide com... | 03/13/2001 |
| 6001934 | Process for the preparation of a functional group-containing polyarylene sulfide resin A simple and convenient process is provided to introduce a sufficient quantity of functional groups to a main chain or terminals of the chain of a polyarylene sulfide resin to improve properties of the resin. The invention provides a process for heat oxidation... | 12/14/1999 |
| 5948842 | Rubber composition and pneumatic tire using the rubber composition The present invention provides a rubber composition comprising natural rubber and/or diene synthetic rubbers, silica in an amount of 10 to 85 parts by weight per 100 parts by weight of the rubber, a specific silane coupling agent, i.e., a bis-(alkoxysilyl... | 09/07/1999 |
| 5898061 | Continuous process for producing polyarylene sulfide This invention provides a method for producing polyarylene sulfide continuously, comprising; 1) polymerization step wherein polyarylene sulfide is polymerized from a sulfur compound in the liquid or gas state and a dihalogenated aromatic compound in non-p... | 04/27/1999 |
| 5869599 | Free radical ring opening for polymerization of cyclic oligomers containing an aromatic sulfide linkage A polyarylene sulfide free of inorganic contaminants, especially residues of inorganic polymerization catalysts, is produced by the free radical, ring-opening polymerization of a cyclic thioether.... | 02/09/1999 |
| 5824767 | Poly(arylene sulfide) compositions having improved processability A process for improving the processability of poly(arylene sulfide) in melt spinning operations by treatment with a barium-containing compound and, optionally, a lubricant is disclosed.... | 10/20/1998 |
| 5756654 | Process for manufacturing polyarylene sulfide Disclosed is a process for manufacturing polyarylene sulfide comprising pre-polymerizing a dihalogeno-aromatic compound with a liquid or gaseous sulfur compound in the presence of a lithium compound in an aprotic organic solvent followed by further polyme... | 05/26/1998 |
| 5658487 | Polymeric dithiocarbamate acid salt compositions and method of use A contaminant precipitating composition and method are disclosed. The composition comprises a water soluble, branched, polydithiocarbamic acid salt effective for the purpose of precipitating contaminants from an aqueous solution. The method comprises addi... | 08/19/1997 |
| 5635587 | Process for manufacturing polyarylene sulfide A process for efficiently manufacturing high purity polyarylene sulfide. The process comprises feeding a liquid or gaseous sulfur compound (e.g. hydrogen sulfide) to a mixture comprising lithium hydroxide and a non-lithium hydroxide solid compound (e.g. a... | 06/03/1997 |
| 5594096 | Polymeric dithiocarbamic acid salt compositions and methods of use A contaminant precipitating composition and method are disclosed. The composition comprises a water soluble branched polymeric composition effective for the purpose of precipitating contaminants from an aqueous solution. The method comprises adding an amo... | 01/14/1997 |
| 5561215 | Pyrrolidones for cleanup of sulfur-containing polymers A method for removing cured sulfur-containing polymer sealants from surfaces is disclosed. The method comprises applying to the surface a sealant remover comprising at least about 50 wt. % of a pyrrolidone, especially N-methyl-2-pyrrolidone, and allowing ... | 10/01/1996 |
| 5521274 | Polysulfide-modified epoxy resins A polysulfide-modified epoxy resin system in which, upon curing, the polysulfide rubber phase separates into discrete particles, typically 1 to 5 μm in size, to enhance physical properties such as peel strength without any significant reduction in glass ... | 05/28/1996 |
| 5371111 | Method of reprocessing cured polysulfide and/or mercaptan elastomers The method of reprocessing cured polysulfide and polymercaptan elastomers includes reacting an 0.5 to 400 percent-by-weight portion of a polysulfide and/or polymercaptan elastomer with at least one liquid di- or polymercapto compound, with a plasticizer a... | 12/06/1994 |
| 5364928 | Process for preparing arylene sulfide polymers A process for preparing high molecular weight arylene sulfide polymers by dehydrating an aqueous mixture of a sulfur source and a cyclic organic amide to form a dehydrated mixture, contacting the dehydrated mixture with a dihaloaromatic compound to produc... | 11/15/1994 |
| 5306805 | Process for the preparation of polyarylene sulphides This invention relates to a simplified process for the preparation of polyarylene sulphides with improved product quality from alkali metal sulphides and dihalogenated aromatic compounds, in which the alkali metal sulphides are prepared and reacted in sit... | 04/26/1994 |
| 5296579 | Arylene sulfide polymers A process for the production of arylene sulfide polymers is provided which comprises subjecting a mixture of at least one first sulfur source, at least one second sulfur source comprised of at least one organic monothiol compound, at least one polyhalo-su... | 03/22/1994 |
| 5260411 | Polyimide resins A method for the preparation of a polyimide containing reversible crosslinks comprising the step of curing a monomer having the formula ##STR1## wherein R and R' may be the same or different and each is H or lower alkyl having 1-5 carbon atoms under ... | 11/09/1993 |
| 5239051 | Limiting the amount of water during the preparation of phenylene sulfide polymers A method is provided for increasing reactant concentrations for the polymerization of PPS without creating a deterioration of the molecular weight of the resultant polymer by limiting the amount of by-product water present during the initial portion of th... | 08/24/1993 |
| 5239050 | Process for preparing arylene sulfide polymer with addition of aqueous alkali metal carboxylate prior to termination of polymerization A process for preparing high molecular weight arylene sulfide polymers by dehydrating an aqueous mixture of a sulfur source and a cyclic organic amide to form a dehydrated mixture, contacting the dehydrated mixture with a dihaloaromatic compound to produc... | 08/24/1993 |
| 5200499 | Removal of water by venting during the polymerization of phenylene sulfide polymers with sulfur source/polar organic compound molar ratio being at least 0.36/1 A method is provided for increasing reactant concentrations for the polymerization of PPS without creating a deterioration of the molecular weight of the resultant polymer by venting excessive by-product water during the polymerization reaction.... | 04/06/1993 |
| 5175243 | Process for preparing arylene sulfide polymers with halo benzene containing deactivating group An arylene sulfide polymer and a process for preparing same by contacting a sulfur source, a cyclic organic amide and a dihaloaromatic compound to produce a polymerization mixture, polymerizing the polymerization mixture and recovering the arylene sulfide... | 12/29/1992 |
| 5171831 | Producing high molecular weight poly(arylene sulfide) polymers by adding second polar solvent prior to termination of polymerization A process for producing an easily recoverable poly(arylene sulfide) polymer having a melt flow of less than 130 g/10 min., which processes comprises: a) adding a second polar organic compound to a polymerization reaction mixture during polymerization immediate... | 12/15/1992 |
| 5164095 | Dithiocarbamate polymers A water soluble ethylene dichloride ammonia polymer having a molecular weight of from 500 to 10,000 which contains from 5 to 50 mole % of dithiocarbamate salt groups. Also, disclosed is the use of these polymers in removing heavy metals from water.... | 11/17/1992 |
| 5159056 | Preparation of arylene sulfide polymer in the presence of titanium dioxide A process for preparing arylene sulfide polymers by contacting a sulfur source, a cyclic organic amide, and a dihaloaromatic compound to form a polymerization mixture, polymerizing the polymerization mixture and recovering the arylene sulfide polymer wher... | 10/27/1992 |
| 5155207 | Arylene sulfide polymers and articles of manufacture Films and fibers are prepared from arylene sulfide resins comprising first recurring units consisting of aromatic structures having the form: ##STR1## and second recurring units including units selected from aromatic structures having the form: ... | 10/13/1992 |
| 5144004 | Process for preparing arylene sulfide sulfone/sulfoxide polymers An arylene sulfide sulfone/sulfoxide polymer and a process for preparing same by contacting at least one dihaloaromatic sulfone, at least one dihaloaromatic sulfoxide, at least one organic amide, at least one sulfur-containing compound, and water.... | 09/01/1992 |
| 5126430 | Process for preparing polyarylene sulfides with metal salt of hydroxycarboxylic acid A process for preparing a polyarylene sulfide involves contacting a sulfur source with a metallic salt of an aliphatic ω-hydroxycarboxylic acid and a dihalogen aromatic compound in an organic polar solvent, thereby carrying out polycondensation with stab... | 06/30/1992 |
| 5115093 | Process for preparing arylene sulfide polymers in the presence of functionalized olefin An arylene sulfide polymer and a process for preparing arylene sulfide polymers by contacting a sulfur source, a cyclic organic amide and a dihaloaromatic compound to form a polymerization mixture, polymerizing the polymerization mixture and recovering th... | 05/19/1992 |
| 5110901 | Higher molecular weight arylene sulfide resin and process for its preparation In a first embodiment, arylene sulfide resins are provided by contacting, in a polymerization mixture, during a polymerization process, reactants comprising: an alkali metal sulfide, an organic amide, an alkali metal carboxylate, water and a monomer sourc... | 05/05/1992 |
