William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
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| Number | Title | Issue Date |
| 8168723 | Brominated styrenic polymers and their preparation Preparing brominated styrenic polymer by maintaining a mixture formed from (i) brominating agent, (ii) a solvent solution of styrenic polymer, and (iii) aluminum halide catalyst, at −20 to +20° C., and terminating bromination in 20 minutes or less. New brominated... | 05/01/2012 |
| 8071688 | Brominated anionic styrenic polymers and their preparation Concurrently fed into a reaction zone held at about 10° C. or less are brominating agent, aluminum halide catalyst, and a solution of anionic styrenic polymer having a GPC Mn about 2000-30,000. The components are in at least two separate feed streams. The feeds are... | 12/06/2011 |
| 7851559 | Soft zero halogen flame retardant thermoplastic elastomers Soft flame retardant thermoplastic compositions that are preferably halogen free and include a styrenic block copolymer having a low modulus, one or more of a polyolefin polymer or copolymer and an acrylate containing polymer or copolymer, one or more of a softener ... | 12/14/2010 |
| 7638583 | Brominated anionic styrenic polymers and their preparation Concurrently fed into a reaction zone held at about 10° C. or less are brominating agent, aluminum halide catalyst, and a solution of anionic styrenic polymer having a GPC Mn about 2000-30,000. The components are in at least two separate feed streams. The feeds are... | 12/29/2009 |
| 7632893 | Brominated styrenic polymers and their preparation Preparing brominated styrenic polymer by maintaining a mixture formed from (i) brominating agent, (ii) a solvent solution of styrenic polymer, and (iii) aluminum halide catalyst, at −20 to +20° C., and terminating bromination in 20 minutes or less. New brominated... | 12/15/2009 |
| 7423092 | Radiation-curable compositions for pigmented inks The present invention relates to radiation-curable compositions useful as ink vehicles or inks, in particular UV-curable inks, such as UV-litho inks, comprising a (meth)acrylated styrene allyl alcohol copolymer obtained from the (meth)acrylation of a styrene allyl a... | 09/09/2008 |
| 7408009 | Hydrogenation of polymers in the presence of supercritical carbon dioxide A method of hydrogenating a polymer comprises: (a) providing a dense phase, the dense phase comprising a polymer in a solvent; (b) providing a catalyst system, the catalyst system comprising as least one metal hydrogenation catalyst (preferably including nickel or r... | 08/05/2008 |
| 7390855 | Concrete admixture additive A new family of concrete admixture additives can be derived from reacting a mixture of olefins/cyclic olefins-maleic anhydride copolymers and methoxy polyethylene glycol amines and/or polyethylene glycol monoalkyl ethers, or a mixture of styrene-maleic anhydride cop... | 06/24/2008 |
| 7385009 | Process for the preparation of hydroxy-vinyl-aromatic polymers or copolymers by anionic or controlled radical polymerization The instant invention relates to a process for the preparation of hydroxy-vinyl-aromatic polymers in particular 4-hydroxystyrene polymers or copolymers by anionic or controlled radical polymerization of the respective monomer, wherein the hydroxy functionality is bl... | 06/10/2008 |
| 7365151 | Solvent for treating polystyrene resin and method of treating polystyrene resin with the same A solvent for polystyrene resin treatment is used for reducing the volume of a polystyrene resin by contacting it with the solvent; and a method of treating polystyrene resins. The solvent is characterized by comprising 20 to 70 wt. % of diethylene glycol dimethyl e... | 04/29/2008 |
| 7351771 | Process for regenerating 2-chlorotrityl resins The present invention relates to a recycling process for the preparation of solid phase bonded 2-chlorotrityl chloride (2-CTC resin) useful for solid phase peptide synthesis, wherein active chloride CTC resin is regenerated by reacting the spent resin with a chlorin... | 04/01/2008 |
| 7347237 | Rubber composition containing resinous nanoparticle This invention relates to a tread rubber composition for tires with the addition of crosslinked resinous nanoparticles having a high glass transition temperature (Tg) into elastomeric base polymers. The invention demonstrates greatly improved handling per... | 03/25/2008 |
| 7312280 | Process for producing modified ethylene-vinylcyclohexane copolymer resin There is provided a process for producing a modified ethylene-vinylcyclohexane copolymer resin, which comprises the steps of: (1) blending at least the following components (A) to (C) to produce a blend; | 12/25/2007 |
| 7312281 | Anhydrous, liquid phase process for preparing hydroxyl containing polymers of enhanced purity An anhydrous, liquid phase process for preparing hydroxyl containing polymers of enhanced purity comprising the steps of polymerization, purification, transesterification, purification, catalyst removal, and solvent exchange. The resultant polymer in solution can be... | 12/25/2007 |
| 7288329 | Electroluminescent devices including conjugated polymers containing an azole structure An electroluminescent device, including a spaced-apart anode and cathode; and an organic layer disposed between the spaced-apart anode and cathode and including a polymer having an azole structure. ... | 10/30/2007 |
| 7279527 | Method of converting anionic living end to protected free radical living end and applications thereof Provided is a method of converting an anionic living end to a protected free radical “living” end in a well-controlled manner, which enables copolymerization by plural mechanisms. The method is particularly useful for copolymerization of anionically polymerizabl... | 10/09/2007 |
| 7267891 | Compound for light emitting device and organic light emitting device using the same An organic EL device according to the present invention has a layered structure in which a hole injection electrode (anode), a hole injection layer, a hole transport layer, a light emitting layer, a hole blocking layer, an electron injection layer, and an electron i... | 09/11/2007 |
| 7262254 | Tire with low volatile alcohol emission rubber tread with compositional limitations The invention relates to a tire having a tread of a rubber composition with compositional limitations containing minimal, if any, of in situ formed volatile alcohol byproduct. The tread component rubber composition contains a combination or pre-hydrophobated silica ... | 08/28/2007 |
| RE39746 | Phosphoric esters and their use as dispersants The invention relates to phosphoric esters of the general formula I where X is 1 or 2; n is from 2 to 18; m and o are each from 2 to 100; k is from 2 to 4; R″ is H or a linear or branched alkyl radical; and R′ is an alkyl, al... | 07/31/2007 |
| 7250476 | Multi-functional polymers A multi-functional polymer defined by the formula (Q—RnZ—P2—Y where (Q—R)n is a functionality cluster, Q is a functional group, R is a multi-valent organic group, P2 is a long-chain p... | 07/31/2007 |
| 7244791 | Method for preparing sulfonated polystyrene for polymer electrolyte of fuel cell A method for preparing sulfonated polystyrene, whereby a styrene monomer having a sulfonyl chloride is prepared by reacting p-styrene sulfonic acid salt with a chloride, a styrene-based polymer having the sulfonyl chloride is synthesized by the polymerization of a p... | 07/17/2007 |
| 7241830 | Organic solvent-free film-forming compositions, multi-layer composite coatings, and related methods Provided is a film-forming composition substantially free of organic solvent which includes an aqueous dispersion of polymeric microparticles prepared by emulsion polymerization of a monomeric composition containing (1) at least 10 percent by weight of one or more v... | 07/10/2007 |
| 7238435 | Polymeric compound and organic luminescence device A main chain-type or side chain-type polymeric compound having a structure wherein at least one metal complex segment having a plurality ligands is introduced into a main chain or a side chain is provided. In the case where the polymeric compound is the main chain-t... | 07/03/2007 |
| 7232864 | Coupled radial anionic polymers The present invention is a coupled radial anionic polymer comprising a polyhedral oligosilsesquioxane [POSS] of the formula [R—SiO3/2]n. POSS compounds having R=vinyl, glycidyldimethyl silyl, and isobutyl have been found effective in coupling... | 06/19/2007 |
| 7211537 | Modified aluminum oxy compound, polymerization catalyst and process for producing olefin polymer and alkenyl aromatic hydrocarbon polymer A modified aluminum oxy compound (A) obtained by reacting an aluminum oxy compound (a), water (b) and a compound having a hydroxyl group (c); a polymerization catalyst component comprising the modified aluminum oxy compound; a polymerization catalyst obtained by con... | 05/01/2007 |
| 7208539 | Thermosetting resin composition, and prepreg and laminated board using the same The present invention relates to a thermosetting resin composition comprising: (1) a metal salt of a disubstituted phosphinic acid, and (2) a resin having a dielectric constant of 2.9 or less at a frequency of 1 GHz or more, and a prepreg and a laminated board using... | 04/24/2007 |
| 7199175 | Tread for a tire having a rigidity gradient A tire tread comprising a rubber composition based on (phr: parts by weight per hundred parts of elastomer): (i) a diene elastomer; (ii) more than 50 phr of an inorganic filler as reinforcing filler; | 04/03/2007 |
| 7182086 | Mouth guard and sheet for mouth guard A mouth guard which is excellent in impact absorbability and durability, is thin and has good fittability, and is able to easily chew thereupon, and does not give vomiting feel; and a sheet for mouth guard which is suitable for producing the mouth guard. The mouth g... | 02/27/2007 |
| 7163992 | Methods for manufacturing a copolymer with a high yield by reacting a vinyl monomer and a macromonomer A process for producing a copolymer which comprises reacting a vinyl monomer with a macromonomer composition containing a macromonomer. The macromonomer composition is obtained by polymerizing at a temperature of 160 to 350° C. a monomer mixture comprising 10 to 80... | 01/16/2007 |
| 7160950 | Modified olefin copolymer A modified olefin-based copolymer produced by graft-polymerizing an alkenyl aromatic hydrocarbon and/or an unsaturated carboxylic acid or derivative thereof to an olefin-based copolymer containing repeating units derived from a linear α-olefin and/or ethylene copol... | 01/09/2007 |
| 7160449 | Proline chiral columns with broad chiral selectivity A general chiral column with a multipleproline-based chiral stationary phase. Embodiments include chiral stationary phases of the following formula: wherein n is any integer of 2 or greater, and analogs and isome... | 01/09/2007 |
| 7148288 | Process for formation of preformed stabilizer polyols A process is disclosed for formation of a preformed stabilizer for use in formation of graft polyols. The preformed stabilizer has a reduced level of transesterification products and results in less reactor fouling. The preformed stabilizer is prepared in the presen... | 12/12/2006 |
| 7144947 | Amphiphilic copolymers useful especially as emulsifiers The invention concerns copolymers of the poly(styrene)-poly(ethylene-butylene)-poly(styrene) type wherein the central poly(ethylene-butylene) sequence has been modified by chemical grafting of hydrophilic groups to make them amphiphilic. The invention also concerns ... | 12/05/2006 |
| 7141160 | Chiral columns with broad chiral selectivity A general chiral column with a multipleproline-based chiral stationary phase. Embodiments include chiral stationary phases of the following formula: wherein n is any integer of 2 or greater, and analogs and isome... | 11/28/2006 |
| 7119164 | Method for preparing sulfonated organic porous material A sulfonated organic porous material in which at least 0.5 mg-equivalent/g (on a dry basis) of sulfonic acid groups has been introduced can be obtained by causing a gaseous substance containing sulfuric anhydride to come in contact with an organic porous material ha... | 10/10/2006 |
| 7090928 | Binuclear compounds Devices are provided having an anode, a cathode, and an emissive layer disposed between and electrically connected to the anode and the cathode. The emissive layer includes an emissive material having more than one metal center. In one embodiment, first and second m... | 08/15/2006 |
| 7090924 | Thermosetting resin composition for high performance laminates This invention concerns a thermosetting resin system that is useful in the manufacture of high performance prepreg, laminate and composite materials as well as the prepregs, laminates and composites made from the thermosetting resin composition. ... | 08/15/2006 |
| 7090929 | Metallic complexes covalently bound to conjugated polymers and electronic devices containing such compositions The present invention relates to polymeric metal complexes comprising metallic complexes covalently bound to conjugated polymers and luminescent materials containing such polymeric metal complexes. The invention further relates to electronic devices in which the act... | 08/15/2006 |
| 7087558 | Process for reacting large hydrophobic molecules with small hydrophilic molecules A process for reacting relatively small hydrophilic carboxylic molecules with relatively large, hydrophobic hydrocarbon based molecules, said process comprising conducting the reacting in the presence of a sulfonic acid catalyst having solubilizing properties. In a ... | 08/08/2006 |
| 7078464 | Acid salts of amine-functionalized SMA imide resins Compositions comprising acid salts of amine-functionalized styrene-maleic anhydride resins are disclosed. The salts can be dissolved in organic solvents, UV/EB polymerizable monomers and/or oligomers, and/or water and act as a polymeric surfactants to disperse pigme... | 07/18/2006 |