Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 7781504 | Alkyltin sulfanyl diester thiols Disclosed herein are compounds of the formula: (R)x—Sn—(R′)4-x wherein: R is alkyl; R′ is a moiety selected from the group consisting of: ... | 08/24/2010 |
| 7767740 | Alkyltin sulfanyl mercaptocarboxylates having terminal thiol groups An alkyltin compound of specified formula which has utility as an excellent stabilizer for a halogen-containing resin. The alkyltin compound has from 1-3 terminal thiol groups. ... | 08/03/2010 |
| 7531587 | Thermal stabilizer composition for halogen-containing vinyl polymers Stabilizer compositions are used to stabilize halogen-containing vinyl polymers from, for example, degradation and discoloration. The stabilizer compositions comprise a mercaptoester, a reverse mercaptoester, and a Lewis acid. ... | 05/12/2009 |
| 7423081 | Thermoplastic formulations for manufacturing pipes and accessories for home and industrial use, and process for the same Thermoplastic formulations to manufacture pipe and fluid accessories for home and industrial use comprising a polyvinyl chlorinated thermoplastic compound (CPVC) at a level up to 100 phr, oxidizing agents, polymer promoter agents, and impact modifier agents characte... | 09/09/2008 |
| 7238739 | Use of calcium carbonate in rigid poly(vinyl chloride) compositions Poly(vinyl chloride) is compounded with a chalk-like, essentially pure calcium carbonate to provide improved weathering resistance of rigid poly(vinyl chloride) articles subjected to external exposures of heat and sunlight. Blends and alloys are also disclosed. Opti... | 07/03/2007 |
| 7235282 | Method of treating the surface of an aged PVC object A process for the treatment of natural discoloration in an article, particularly a vinyl chloride polymer article, by treating the surface of the article in ambient air with a first organic solution containing an organic peroxide and a first organic solvent. The inv... | 06/26/2007 |
| 7138178 | Fiber for artificial hair and process for producing the same A fiber having unique gloss of appearance (flickering gloss) with light diffusibility, while maintaining natural feeling of gloss necessary as fiber for hair, is provided. The present invention may be attained by an artificial fiber for hair obtained from an acrylic... | 11/21/2006 |
| 7087193 | Stabilizer composition for use in polyvinyl chloride formulations having a mixture of at least one organotin sulfide, at least one oranotin chloride, and at least one free mercaptan A stabilizer composition, for use in polyvinyl chloride formulations, that is a mixture of: at least one organotin sulfide; at least one organotin chloride; and at least one free mercaptan. ... | 08/08/2006 |
| 7029759 | Halogen-containing vinyl polymer compositions The invention provides a film that includes chloride-containing vinyl polymer and a stabilizer component, wherein the film has a 96-hour Volatile Organic Compound Emission Factor of no more than 1,000 μg/m2/hour. The invention also provides a film that i... | 04/18/2006 |
| 6946516 | Rubber-modified styrene resin composition A rubber-modified flame resistant styrene resin composition, which has superior heat stability and weather resistance to prevent discoloration and deterioration due to heat or light and is processed under various molding condition, is provided. The rubber-modified f... | 09/20/2005 |
| 6919392 | Stabilization of vinyl halide polymers The heat and light stability imparted to vinyl halide polymers by metal compounds conventionally employed for this purpose is considerably improved by the presence of a mercapto ester such as 2-mercaptoethyl stearate. The esters can replace a substantial portion of ... | 07/19/2005 |
| 6878310 | Carboxylate-containing alkyltin heat stabilizer A stabilizer composition, suitable for use in polyvinyl chloride compositions, can be formed by reacting a mixture of monoalkyltin trichloride, such as butyltin trichloride, and dialkyltin dichloride, such as dibutyltin dichloride, with at least one carboxylic acid,... | 04/12/2005 |
| 6846861 | Pleasantly fragrant process for stabilizing halogen-containing polymers A pleasant fragrance is imparted to the stabilizatiin of a halogen-containing polymer by the use of an organotin mercaptoalkyl heptanoate, and, optionally, up to about 50%, on an equivalents basis, of a sulfide thereof as the stabilizer. A mixture of the heptanoate ... | 01/25/2005 |
| 6617392 | Molding composition of siloxane capable of extending mold lifetime The present invention provides the molding composition of siloxane, which is capable of extending mold lifetime where inhibitors alkene or acetylene polymerization are mixed in the molds composed of siloxane. The inhibitors can effectively inhibit the rel... | 09/09/2003 |
| 6531526 | Halogen containing polymer compounds containing modified zeolite stabilizers The present invention relates to a halogen containing polymer compound containing a modified zeolite stabilizer. The modified zeolite stabilizer has a small particle diameter, narrow particle size distribution and less than 10 weight percent water. The mo... | 03/11/2003 |
| 6531533 | Stabilized halogen-containing polymers Halogen-containing polymers or the recyclates thereof are stabilized by the addition of (a) a halogen-containing polymer or a recyclate thereof; (b) at least one zeolite in the form of sodium, potasssium and/or lithium, in particular at least one zeolite of fo... | 03/11/2003 |
| 6258880 | Stabilizers for improved weatherability of clear polyvinyl chloride compositions Stabilizer compositions useful for protecting clear polyvinyl chloride and other clear halogenated polymer compositions against discoloration and degradation caused by exposure to light and weathering in addition to heat comprising an organotin compound s... | 07/10/2001 |
| 6225387 | Stabilizer blend for organic polymer compositions; stabilized polymer compositions and method of stabilizing polymers An organohalide-flame retardant polymer containing as a stabilizer blend: a) an acid scavenger, for example a hydrotalcite or an amorphous basic aluminum magnesium carbonate; b) a heat stabilizer comprising an organotin compound; and c) a polyhydroxyaliphatic costa... | 05/01/2001 |
| 5969015 | Monomeric and oligomeric bisphosphites as stabilisers for polyvinyl chloride Compositions, comprising (i) a halogen-containing polymeric material, and (ii) at least one phosphite of formula I ##STR1## wherein n is a number from 1 to 6, R is a divalent linking group of formulae as defined herein as well as of novel compounds of fo... | 10/19/1999 |
| 5670563 | Stabilised chlorine-containing polymer compositions The invention relates to compositions comprising a) a chlorine-containing polymer b) at least one organotin compound and c) at least one phosphorus compound of formula (R7 S)3 P.dbd.Xn wherein the meaning of the individual substituents i... | 09/23/1997 |
| 5582873 | Acid scavenger stabilized halogen containing organic polymers and method for processing The present invention relates to a method of making stabilized halogen containing organic polymer laminate comprising as one layer a halogen-containing organic polymer, an acid scavenger comprising a molecular sieve or zeolite; and a heat stabilizer and a... | 12/10/1996 |
| 5539055 | Antistatic nonflammable resin composition An antistatic nonflammable resin composition comprising: (A) 30 to about 80 weight percent a styrene resin; (B) 70 to about 20 weight percent of a vinyl chloride resin; (C) 0.5 to about 5 weight parts based on (A)+(B) of at least one antistatic agent sele... | 07/23/1996 |
| 5532303 | Ammonium chloride as a PVC co-stabilizer The presence of ammonium halide in a PVC composition along with conventional primary heat stabilizers enhances the heat stability during the early stages of extrusion into pipe and other articles of manufacture. The ammonium halide which is formed as a by... | 07/02/1996 |
| 5527842 | Alkyl-thio-glycolate PVC stabilizers with added aromatic ether alcohol to prevent precipitation Disclosed are liquid stabilizer compositions useful in polyvinyl chloride formulations and which exhibit a reduced tendency to form precipitates on standing, comprising one or more aromatic ether alcohols of the formula (1) Ar--O--(CH2 CH(X)O) | 06/18/1996 |
| 5464896 | Stabilized, halogen-containing resin composition A stabilized halogen-containing resin composition contains 100 parts by weight of a halogenated polymer of an ethylenically unsaturated monomer, 0.01 to 5 parts by weight of at least one member selected from a perchloric acid-containing hydrotalcite compo... | 11/07/1995 |
| 5444111 | Ammonium chloride as a PVC co-stabilizer The presence of ammonium halide in a PVC composition along with conventional primary heat stabilizers enhances the heat stability during the early stages of extrusion into pipe and other articles of manufacture. The ammonium halide which is formed as a by... | 08/22/1995 |
| 5414035 | Calendered rigid vinyl polymer compositions The present invention provides an external lubricant composition for calendered vinyl polymer. The external lubricant provides rigid vinyl polymer compositions having improved plate out resistance, clarity, release, and stability. The external lubricant c... | 05/09/1995 |
| 5384346 | Polyvinyl butyrals having improved thermal stability and light resistance Polyvinyl butyrals (PVBs) with improved thermal stability and improved light resistance contain as stabilizers polynuclear phenols which phenolic radicals have a quaternary carbon atom in the para-position to the phenolic hydroxyl group and if desired in ... | 01/24/1995 |
| 5340862 | Stabilizers for halogen containing polymers Improved stabilizer compositions are provided which impart significant long-term stabilization to halogen containing polymers such as polyvinyl chloride. The improved stabilizer compositions incorporate an alkali-metal hydrogen phosphate compound, such as... | 08/23/1994 |
| 5304589 | Stabilized polymers and their preparation Oxidatively stabilized polyolefin polymers containing an antioxidant are made more resistant to loss of antioxidant by converting at least some of the antioxidant comprising a polymer of dicyclopentadiene and a phenolic compound into a form non extractabl... | 04/19/1994 |
| 5252645 | Antistatic, thermally stabilized halogen-containing resin composition A halogen-containing resin composition containing 100 parts by weight of a halogen-containing resin, 0.01 to 10 parts by weight of a hydrotalcite, 0.01 to 10 parts by weight of a perchloric acid ion-containing hydrotalcite, and 0.01 to 5 parts by weight o... | 10/12/1993 |
| 5236981 | Stabilized halogenated polymer compositions containing a lead or organotin compound The present invention relates to new stabilized compositions based on halogenated polymer and more specifically on chlorinated polymer. It relates more particularly to stabilized compositions based on chlorinated polymer, which are characterized in that t... | 08/17/1993 |
| 5229444 | Antioxidant polyolefin compositions Antioxidant-containing polyolefin composition containing a polyolefin and an antioxidant compound having the general formula: ##STR1## wherein R, R', X and Y are the same or different and are selected from alkyl, phenyl, cyclohexyl, a mono or polyfun... | 07/20/1993 |
| 5194471 | Rigid chlorinated polyvinyl chloride compound and articles derived therefrom CPVC compositions, pipe, and a method of preparing a pipe are disclosed and comprise CPVC having 63% to 70% by weight chlorine and preferably 65% to about 69% chlorine; a high rubber impact modifier comprising a graft copolymer of a rubbery polydiene and ... | 03/16/1993 |
| 5190580 | Process of using biocidal compositions A synergistic composition of biocides for the preparation of anti-fouling paint preferably containing at least one of the group of 3-iodo-2-propynyl-butyl carbamate, 3-iodo-2-propynyl-cyclohexyl carbamate, 3-iodo-2-propynyl phenyl carbamate, 3-iodo-2-prop... | 03/02/1993 |
| 5166241 | Process for stabilizing mixtures based on halogenated polymers Thiol compounds are combined with an organometallic halide or metallic halide to provide thermal stability to vinyl halide polymers.... | 11/24/1992 |
| 5145896 | Process for the reduction of diene polymer hot melt adhesive color A method of reducing the color of a hot melt adhesive formulation comprising a polymer of a conjugated diene which comprises adding to the formulation an amount of an alkyltin compound selected from the group consisting of mercaptides, mercaptocarboxylate... | 09/08/1992 |
| 5109046 | Liquid organotinthioalkanol stabilizer compositions and vinyl halide resin compositions containing the same This invention relates to heat and light stabilizer compositions for vinyl halide resin compositions comprising organotinthioalkanol compounds that are stabilized against gelation and precipitation, to methods of preparing the stabilizer compositions, and... | 04/28/1992 |
| 5100946 | Stabilized halogen containing polymer compositions The present invention comprises a stabilized halogen containing polymer, preferably poly(vinyl halide), and more preferably poly(vinyl chloride) composition. A preferred polymer composition is a rigid halogenated polymer such as rigid poly(vinyl chloride)... | 03/31/1992 |
| 5084499 | Phosphite as a light stabilizer and functional additive for polyvinyl chloride The present invention is a method employing calcium phosphite as a light stabilizer and plate-out preventative for polyvinyl chloride. A composition of calcium phosphite and polyvinyl chloride is also disclosed.... | 01/28/1992 |
