Did You Know...
...that two musicians were responsible for the invention of color print film? Fascinated by photography, Leopold Godowsky and Leopold Mannes worked together to produce an easy-to-use, practical color film. They worked full time as music teachers and gave concerts while experimenting during their off hours in Mannes' kitchen. Their success earned them full-time, well-paying jobs at Kodak and their efforts resulted in Kodachrome film, which was introduced in 1935.
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| Number | Title | Issue Date |
| 7335253 | Process for preparing a sulphur cement product The invention provides a process for preparing a sulphur cement product comprising the following steps: (a) selectively oxidising hydrogen sulphide to elemental sulphur by contacting, in a reaction zone, a hydrogen sulphide contain... | 02/26/2008 |
| 7294684 | Dimeric and polymeric alkylphenol polysulfides The invention relates to a process and composition-of-matter for the preparation of dimeric and polymeric alkylphenol polysulfides based on paracumyl phenol for use in vulcanizable rubbers in which the additive is a dimeric or polymeric alkylphenol polysulfide non-n... | 11/13/2007 |
| 7129321 | Thiophosphine compounds and methods of making polymerizable compositions containing them and their use for making ophthalmic lenses Thiophosphine compounds (also named phosphine sulfide compounds) and their use for making polymerizable compositions which after polymerization give optically transparent articles, such as ophthalmic lenses, having improved mechanical and optical properties and in p... | 10/31/2006 |
| 7101959 | Polymerization catalysts A subject of the present invention is new compounds having a lanthanide and having a tridentate ligand, a process for their preparation and their use in particular as polymerization catalysts. ... | 09/05/2006 |
| 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 |
| 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 |
| 6489437 | Polyarylene sulfide resin composition Provided is a polyarylene sulfide resin composition having well-balanced fluidity and mechanical strength. The composition is such that its spiral flow length, x (mm), to give a molding having a thickness of 1 mm and the flexural strength, y (MPa), of the... | 12/03/2002 |
| 6335118 | Sulfurated hydrocarbon materials having high capacity and secondary cells using the same The present invention relates to a novel sulfurated hydrocarbon material having electrochemical activity, high capacity, and good reversibility, which can be used as an electrode material for the secondary battery. More particularly, it relates to a sulfu... | 01/01/2002 |
| 6319993 | Vulcanizing agents for unsaturated rubber mixtures The invention relates to polymeric sulfur compounds, their preparation and their use as vulcanizing agcnts for unsaturated rubber mixtures.... | 11/20/2001 |
| 6174989 | Rubber compounds containing polymeric bis-succinimide polysulfides The present invention relates to rubber compounds containing polymeric bis-succinimide polysulfides of the formula: ##STR1## wherein R is selected from the group consisting of phenylene and xylylene; R1 is selected from the group consisting hyd... | 01/16/2001 |
| 5962630 | Process and material that encapsulates solid hazardous waste A method of encapsulating mixed waste in which a thermoplastic polymer having a melting temperature less than about 150° C. and sulfur and mixed waste are mixed at an elevated temperature not greater than about 200° C. and mixed for a time sufficient to... | 10/05/1999 |
| 5929203 | Process for preparing high molecular weight poly(arylene sulfide) polymers using lithium salts A process is provided for producing a high molecular weight poly(arylene sulfide) polymer employing at least one dihaloaromatic compound, a sulfur source, a polar organic compound, a lithium salt which is soluble in the polar organic compound, and water i... | 07/27/1999 |
| 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 |
| 5789533 | Polyarylene sulfide, a process for the preparation thereof and a composition comprising the same A polyarylene sulfide in which a ratio of terminal --SX groups to a total of the terminal --SX groups and --SZn-- groups is less than 20 mole %, wherein X represents an alkali metal or a hydrogen atom, and which has a melt viscosity, V6 of 100 ... | 08/04/1998 |
| 5710218 | Ethylene-propylene-diene rubber, elastomer composition and vulcanized rubber thereof The invention provides ethylene-propylene-diene rubbers capable of imparting excellent heat resistance, weather resistance and dynamic fatigue resistance to vulcanized rubbers made therefrom. The ethylene-propylene-diene rubbers have sulfur dispersed ther... | 01/20/1998 |
| 5698639 | Ethylene-propylene-diene rubber, elastomer composition and vulcanized rubber thereof The invention provides ethylene-propylene-diene rubbers capable of imparting excellent heat resistance, weather resistance and dynamic fatigue resistance to vulcanized rubbers made therefrom. The ethylene-propylene-diene rubbers have sulfur uniformly disp... | 12/16/1997 |
| 5464931 | Oxidation of dimercaptans to organic disulfide polymers A process for preparing an organic disulfide polymer such as polyethylene disulfide which is used in batteries comprises contacting a dimercaptan such as 1,2-ethanedithiol with elemental sulfur using a mixture of a basic compound such as NaOH and an ethox... | 11/07/1995 |
| 5432257 | Process for manufacturing a polysulfide polymer from the heavy ends waste of chlorinated hydrocarbon production A process is disclosed for preparing a polysulfide polymer using a heavy ends waste generated in chlorinated hydrocarbon production. The process involves first pretreating the heavy ends waste by an enriching process to form an enriched heavy ends waste w... | 07/11/1995 |
| 5280104 | Process for the preparation of poly(arylene sulfide) with low metal contamination and polymer produced A process for preparing poly(arylene sulfide) with reduced metal contamination is produced by contacting a dihaloaromatic compound, a sulfur source, a polar organic compound, and an alkali metal carboxylate in a reaction vessel wherein at least the liquid... | 01/18/1994 |
| 5278283 | Process for preparing polyarylene sulfides of increased molecular weight Disclosed is a process for preparing a polyarylene sulfide, which involves polycondensing a dihalogenated aromatic compound with a source of sulfur in an organic polar solvent while dehydrating at pressure under which polycondensation is performed. This p... | 01/11/1994 |
| 5266674 | Process for preparing arylene sulfide copolymers An arylene sulfide copolymer and a process for preparing same by contacting a mixture of two structurally different dihaloromatic compounds, at least one organic amide, at least one sulfur-containing compound, and water, and continuous long fiber reinforc... | 11/30/1993 |
| 5258489 | Fluorinated poly(arylene sulfide)(arylene disulfide) A polymer having repeating units corresponding to the structure ##STR1## wherein R is selected from the group consisting of ##STR2## where z is 1, 2, 3, or 4, A is a divalent substituted or unsubstituted aromatic radical, y is in the range of 0.... | 11/02/1993 |
| 5241038 | Method for the preparation of aromatic imide sulfide polymers A process for the preparation of aromatic imide sulfide polymers and polymers produced. In the process, elemental sulfur is reacted with a compound having the general formula ##STR1## wherein Z1 is a direct link and Z2 is H, or ... | 08/31/1993 |
| 5155183 | Process for the preparation of copoly(arylene sulfide) having an enhanced rate of crystallization Disclosed is a process for preparing a final copoly(arylene sulfide) by contacting an original copoly(phenylene sulfide) with a poly(phenylene sulfide) in the melt phase. The final copoly(arylene sulfide) exhibits an enhanced rate of crystallization.... | 10/13/1992 |
| 5077374 | Aromatic sulfide polymers and method of preparation This invention provides a method for producing high temperature aromatic sulfide polymers which are well suited for use as base compounds in conductive applications. In the method of the present invention, sulfur and a bridged diaromatic reactant compound... | 12/31/1991 |
| 5070183 | Hyperbranched polyarylene Highly branched, functionalized, wholly aromatic poly(arylenes) are prepared by the polymerization of ABn -type aromatic monomers.... | 12/03/1991 |
| 5064937 | Copoly(phenylene sulfide) A process for preparing a polymer having repeating units corresponding to the structure ##STR1## wherein y is in the range of 0.005 to 0.15, x is in the range of 0.02 to 0.25, n is at least 200, and R a divalent aromatic radial. The polymer is p... | 11/12/1991 |
| 5026824 | Copoly(phenylene sulfide) A process for preparing a polymer having repeating units corresponding to the structure ##STR1## wherein R is ##STR2## y is in the range of 0.005 to 0.10, x is in the range of 0.01 to 0.50 when R is ##STR3## x is in the range of 0... | 06/25/1991 |
| 5023317 | Process for destruction of toxic organic chemicals and the resultant inert polymer by-product The invention is a chemical process for complete destruction and safe disposition of hazardous organic chemicals carbonaceous chemicals. The invention also comprises the process for production of an inert polymer formed essentially of Carbon and Sulfur, a... | 06/11/1991 |
| 5021546 | Copoly(phenylene sulfide) A process for producing elemental iodine and a copoly(arylene sulfide) corresponding to the structure ##STR1## wherein y is in the range of 0.001 to 0.15, x is in the range of 0.02 to 0.65 and n is at least 100, consisting essentially of (1) reacting... | 06/04/1991 |
| 5004799 | Pelletized sulfur concrete and method of preparing same An improved modified sulfur concrete product is provided in the form of discrete, self-sustaining pellets of modified sulfur concrete which can be shipped and stored for indefinite periods and remelted to yield useable concrete. The pellets are preferably... | 04/02/1991 |
| 4990404 | Process for destruction of toxic organic chemicals and the resultant inert polymer by-product An invention is a chemical process for complete destruction and safe disposition of hazardous organic chemicals carbonaceous chemicals. The invention also comprises the process for production of an inert polymer formed essentially of Carbon and Sulfur, an... | 02/05/1991 |
| 4977236 | Terminated copoly(arylene sulfide) of low molecular weight A process for preparation of a copoly(arylene sulfide) corresponding to the structure ##STR1## wherein A is a divalent substituted or unsubstituted aromatic radical, T is a monovalent aromatic radical, x is in the range of 0.5 to 0.001 and n is ... | 12/11/1990 |
| 4977224 | Process for the preparation of copoly(arylene sulfide) having a decreased amount of disulfide radicals A process for preparation of a copoly(arylene sulfide) which has a decreased amount of disulfide radicals and corresponds to the structure ##STR1## wherein A is a divalent substituted or unsubstituted aromatic radical, x is in the range of 0.45 to 0 ... | 12/11/1990 |
| 4952671 | Terminated copoly(arylene sulfide) A copoly(arylene sulfide) corresponding to the structure ##STR1## wherein A is a divalent substituted or unsubstituted aromatic radical, T is a monovalent aromatic radical, x is n the range of 0.5 t 0.001 and n is at least 100.... | 08/28/1990 |
| 4945155 | Preparation of low color copoly(arylene sulfide) by heating copoly(arylene sulfide) A process comprising heating for a sufficient period of time and at a temperature in the range of the glass transition temperature of the polymer to 5 degrees C below the melting point of the polymer, a solid, comminuted, copoly(arylene sulfide) prepared ... | 07/31/1990 |
| 4939236 | Process for preparation of copoly(arylene sulfide) A process for preparing a copoly(arylene sulfide) corresponding to the structure [(--A--S--)1-x (--A--S--S--)x ].sbsb.n wherein x is in the range of 0.5 to 0.001 by reacting a mixture of a diiodoaromatic compound and elemental sulfur whic... | 07/03/1990 |
| 4921936 | Process for destruction of toxic organic chemicals and the resultant inert polymer by-product The invention is a chemical process for complete destruction and safe disposition of hazardous organic carbonaceous chemicals. The invention also comprises the process for production of an inert polymer formed essentially of Carbon and Sulfur, and also co... | 05/01/1990 |
