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 |
| 8158692 | Polyurethane foam for steering wheel having improved water resistance The present invention provides a polyurethane foam for an automobile steering wheel. More particularly, the present invention relates to polyurethane foam formed by using a predetermined amount of a polyol having various functional groups and OH values and a predete... | 04/17/2012 |
| 8067476 | Foamed thermoplastic polyurethanes Process for the preparation of foamed thermoplastic polyurethanes characterised in that the foaming of the thermoplastic polyurethane is carried out in the presence of thermally expandable microspheres. ... | 11/29/2011 |
| 8030366 | Use of polyethers containing urethane for urea groups for stabilizing polyurethane foams The invention relates to the use of polyethers containing urethane or urea groups as foam stabilizers, obtained by reacting at least one isocyanate with (a) at least one hydrophilic polyether which statistically carries at least one OH and/or NH2 and/or N... | 10/04/2011 |
| 8017664 | Process for preparing polymer polyols The invention relates to a process for the batch or semi-batch preparation of a polymer polyol, which process involves (1) preparing a seed by polymerizing in a base polyol at least one ethylenically unsaturated monomer in the presence of a polymerization initiator ... | 09/13/2011 |
| 7601762 | Polyvinylchloride/polyurethane hybrid foams with improved burn properties and reduced after-glow The present invention provides a rigid polyurethane foam comprising the reaction product, at an isocyanate index of from about 90 to about 400, of a polyisocyanate and a polyol component comprising, about 20 wt. % to about 80 wt. %, based on the weight of the polyol... | 10/13/2009 |
| 7601761 | Rigid polyurethane foams with increased heat performance The present invention provides a rigid polyurethane foam made from the reaction product, at an isocyanate index of from about 90 to about 400, of a polyisocyanate, and a polyol component containing about 20 to about 80 wt. %, based on the weight of the polyol compon... | 10/13/2009 |
| 7414080 | Polyurethane polishing pad The polishing pad is suitable for planarizing at least one of semiconductor, optical and magnetic substrates. The polishing pad includes a cast polyurethane polymeric material formed with an isocyanate-terminated reaction product formed from a prepolymer reaction of... | 08/19/2008 |
| 7393879 | High resilient silicone foam and process for preparing same A method for producing a novel silicone foam by reaction of a polyisocyanate with a silicone oligomer having a plurality of functional end groups with active hydrogens, optionally in the presence of fire-retardants, under foam forming conditions which creates a new ... | 07/01/2008 |
| 7390867 | Isocyanate adducts The invention relates to isocyanate adducts which can be prepared by reacting at least one polyisocyanate with compounds having at least two hydrogen atoms which are reactive toward isocyanate groups and have a crystalline content of less than 10 J/g determined by d... | 06/24/2008 |
| 7388036 | Flexible polyurethane foam, process for its production, and seat for automobile employing it A novel flexible polyurethane foam having good vibration characteristics and being excellent in occupant posture stability, is provided. A flexible polyurethane foam obtainable by reacting a high molecular weight polyoxyalkylene polyol or a polymer-dispersed ... | 06/17/2008 |
| 7378454 | Polyurethane composition and polishing pad A polyurethane composition containing solid beads dispersed therein, is formed of a microcellular polyurethane foam, and the composition has a storage modulus of elasticity at 40° C. of 270 MPa or more as measured by means of a dynamic elasticity measuring device. ... | 05/27/2008 |
| 7361723 | Low-viscosity allophanates containing actinically curable groups A process for preparing binders containing allophanate groups which contain, at the oxygen atom of the allophanate group that is bonded via two single bonds, organic radicals with activated groups capable of participating in a polymerization reaction with ethylenica... | 04/22/2008 |
| 7361617 | Fire resistant composite material and fabrics therefrom The present invention relates to fire resistant composite materials and to fire resistant fabric materials and mattresses made therefrom. The composite materials include (a) a substrate selected from the group consisting of cotton, rayon, lyocell and blends thereof;... | 04/22/2008 |
| 7354654 | Thermoplastic polymer composition, molded product, and multilayer structure A thermoplastic polymer composition having good flexibility and excellent barrier properties with respect to gases and organic liquids, which can be adhesively bonded to a polyolefin resin, this composition comprising an ethylene-vinyl alcohol copolymer (A), a polym... | 04/08/2008 |
| 7349607 | Optical transmission element Between an optical fiber (LF11, LFB12, LFB13) and a surrounding core covering (AH11, AH12, SB13) of an optical transmission element (OE11 to OE13) there is at least one dry and compressible fixating element (FE... | 03/25/2008 |
| 7336873 | Optical tube assembly having a dry insert and methods of making the same An optical tube assembly having at least one optical waveguide, at least one dry insert, and a tube. In one embodiment, the dry insert has a first layer and a second layer. The first layer is a polyurethane foam and the second layer is a water-swellable layer, where... | 02/26/2008 |
| 7329696 | Aqueous synthetic resin dispersion A aqueous dispersion comprising particles of at least one resin selected from the group consisting of a polyaddition type resin, a polycondensation type resin, an addition condensation type resin, a ring-opening-polymerization type resin and an addition polymerizati... | 02/12/2008 |
| 7326362 | Blowing agent, premix and process for preparing rigid polyurethane foam or polyisocyanurate foam In the present invention, a rigid polyurethane foam or polyisocyanurate foam is prepared by mixing an isocyanate with a premix of a polyol, a blowing agent, a reaction catalyst, a foam stabilizer and other additives, in which 1,1,1,3,3-pentafluoropropane is used as ... | 02/05/2008 |
| 7326738 | Composition and process for forming a flexible polyurethane foam sealing device The subject invention provides a composition and a process for forming a flexible polyurethane foam sealing device having improved compression set properties at increased temperatures. The sealing device is formed without the use of chemical blowing agents. The comp... | 02/05/2008 |
| 7285576 | Absorbent polymer compositions, medical articles, and methods An absorbent polymer composition, which can be in the form of a foam, that includes a polymeric material, absorbent particles and thermally expandable (or expanded) microspheres. ... | 10/23/2007 |
| 7279174 | Stent coatings comprising hydrophilic additives A coating for implantable medical devices and a method for fabricating thereof are disclosed. The coating includes a mixture of a hydrophobic polymer and a polymeric hydrophilic additive, wherein the hydrophobic polymer and the hydrophilic additive form a physically... | 10/09/2007 |
| 7277615 | Fiber optic cable having a dry insert and methods of making the same A fiber optic cable and a method of making the same include at least one optical waveguide, at least one dry insert and a cable jacket. The at least one optical waveguide and at least one dry insert are at least partially disposed within a cavity of the cable jacket... | 10/02/2007 |
| 7273894 | Compositions for the preparation of void-containing articles Disclosed are novel compositions for the preparation of void-containing articles comprising a polymer matrix and a voiding agent The voiding agent comprises at least one first polymer and at least one second polymer, which are selected on the basis of physical prope... | 09/25/2007 |
| 7268170 | Foam modifier, foams prepared from this novel foam modifier and a process for the preparation of these foams This invention relates to novel foam modifiers which can be used to prepare flexible foams. These novel foam modifiers provide improved processability and improved properties of the resultant flexible foams. The present invention also relates to the process of prepa... | 09/11/2007 |
| 7254303 | Optical tube assembly having a dry insert and methods of making the same An optical tube assembly and method of manufacture include at least one optical waveguide, at least one dry insert that generally surrounds the at least one optical waveguide, and a tube. The dry insert includes a tape and at least one filament attached to the tape,... | 08/07/2007 |
| 7254302 | Optical tube assembly having a dry insert and methods of making the same An optical tube assembly having at least one optical waveguide, at least one dry insert, and a tube. The at least one optical waveguide is disposed within the tube and generally surrounds the at least one optical waveguide. In one embodiment, the dry insert has a fi... | 08/07/2007 |
| 7250124 | Structural reinforcement article and process for preparation thereof The invention is a process for the preparation of article comprising placing a film on each inner surface of each part of a two part mold; placing an article in the mold with film located between the surface of the mold and the article such that there is a small spa... | 07/31/2007 |
| 7236670 | Optical tube assembly having a dry insert and methods of making the same An optical tube assembly and methods of manufacturing the same include a tube, at least one optical waveguide, and a dry insert. In one embodiment, the dry insert generally surrounds the at least one optical waveguide and forms a core that is disposed within the tub... | 06/26/2007 |
| 7230036 | Foam insulation made with expandable microspheres and methods A polyurethane and/or polyisocyanurate foam is made using expandable microspheres which encapsulate a primary blowing agent. By expanding during the foam making process, the microspheres function as a blowing agent. The foam preferably has at least 10% by weight exp... | 06/12/2007 |
| 7231119 | Dry fiber optic assemblies and cables A tube assembly of the present invention has at least one subunit with at least one dry insert generally surrounding the subunit which may be disposed within a tube, thereby forming a tube assembly. The subunit includes a fiber optic ribbon and a sheath, wherein the... | 06/12/2007 |
| 7206539 | Non-magnetic single component developing device A non-magnetic single component developing device that is included in combination with a photoreceptor in an image forming apparatus 1 of the electro-photographic system. The non-magnetic single component developing device includes a developing roller, a supp... | 04/17/2007 |
| 7202284 | Foamed thermoplastic polyurethanes Process for the preparation of foamed thermoplastic polyurethanes characterized in that the foaming of the thermoplastic polyurethane is carried out in the presence of thermally expandable microspheres. ... | 04/10/2007 |
| 7179845 | Elastomeric latex foams The invention relates generally to a stable flexible latex foam. The latex foam will contain at least one polymer having a plurality of hard domains and a plurality of soft domains, a micelle forming agent, a hydrocarbon propellant substantially free of dimethyl eth... | 02/20/2007 |
| 7179882 | Low viscosity polymer polyols The present invention relates to low viscosity polymer polyols and to a process for the preparation of these low viscosity polymer polyols. These polymer polyols comprise the free-radical polymerization product of (A) a base polyol, (B) a pre-formed stabilizer, and ... | 02/20/2007 |
| 7177507 | Optical tube assembly having a dry insert and methods of making the same An optical tube assembly having at least one optical waveguide, at least one dry insert, and a tube. In one embodiment, the dry insert has a first layer and a second layer attached together with an adhesive. The dry insert also includes a plurality of particles havi... | 02/13/2007 |
| 7169824 | Process for preparing a flexible polyurethane foam Process for preparing flexible polyurethane foam by reacting an MDI-based polyisocyanate and a polyether polyol with a high oxyethylene content in a mold. ... | 01/30/2007 |
| 7165584 | Rubber compositions and vulcanizates comprising nylon-containing copolymers A tire comprising a tread, where the tread includes a vulcanized rubber, from about 5 to about 80 parts by weight of a nylon-containing block copolymer per 100 parts by weight of the vulcanized rubber, and from about 1 to about 100 parts by weight filler per 100 par... | 01/23/2007 |
| 7160976 | Polyurethane PSA Pressure-sensitive adhesive based on polyurethane, characterized in that the polyurethane is composed of the following starting materials which are reacted with one another in the stated proportions: a) at least one aliphatic or alicyclic diisocyanate h... | 01/09/2007 |
| 7160975 | Methacrylates as stabilizers for polymer polyols This invention relates to ethylenically unsaturated macromers which contain reactive unsaturation, and to a process for preparing these ethylenicallly unsaturated macromers which contain reactive unsaturation. The process of preparing these ethylenically unsaturated... | 01/09/2007 |
| 7160930 | Water blown polyurethane spray foam system A composition and a method for producing primarily water blown polyurethane foams is provided. The composition uses isocyanate ratios greater than conventional foam system to provide a water blown polyurethane foam suitable for a wide variety of applications includi... | 01/09/2007 |