Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 7271222 | Thin-layer-covered golf ball with improved velocity A golf ball comprising a center comprising a polybutadiene having a molecular weight of greater than 200,000 and a resilience index of at least about 40; and a cover layer comprising a polyurethane composition formed from a prepolymer having no greater than 7.5 perc... | 09/18/2007 |
| 7244384 | Method for manufacturing two and three piece golf balls constructed from polyurethane material A novel method of manufacturing a golf ball. A golf ball made with this invention exhibits the characteristic feel and playability of a balata cover with superior durability characteristics (cut and shear resistance) which exceed those of a balata or ionomer cover. | 07/17/2007 |
| 7216976 | Polyurethane resin composition for optical lenses and impact strength synthetic resin lenses An impact strength synthetic resin lens is provided in which transparency of a synthetic resin lens material of a polyurethane and releasability are improved to improve productivity and no stria are produced. The impact strength synthetic resin lens is manufactured ... | 05/15/2007 |
| 7144969 | Impact resistant polyureaurethane and polyureaurethane prepolymer having low NCO/OH ratio The present invention relates to a polyureaurethane wherein the prepolymer comprising said polyureaurethane has a NCO to OH equivalent ratio of from 2.0 to less than 2.5. In an embodiment, the polyureaurethane prepolymer comprises a polyisocyanate and at least one O... | 12/05/2006 |
| 7129288 | Polyurethanes containing sulphide groups, polymeric mixtures based thereon, production and use thereof Novel polyurethanes containing sulfide groups which comprise at least one group of the general formula I in the polymer main chain and/or at least one group of the general formula II incorporated at the chain end: —X—A—S—B—Y— (I) ... | 10/31/2006 |
| 7115698 | Golf ball A golf ball having a cured polyurethane cover which includes an isocyanate group terminated polyurethane prepolymer comprising a specific alicyclic diisocyanate as a polyisocyanate component, and a specific 4,4′-diaminodiphenylmethane derivative as a curing agent.... | 10/03/2006 |
| 7105610 | Thin-layer-covered golf ball with improved velocity A golf ball comprising a center comprising a polybutadiene having a molecular weight of greater than 200,000 and a resilience index of at least about 40; and a cover layer comprising a polyurethane composition formed from a prepolymer having no greater than 7.5 perc... | 09/12/2006 |
| 7098290 | Method of preparing an optical polymerizate The present invention is directed to a novel method of preparing a polymerizate, which includes the step of polymerizing a two-component composition, which includes: a first component containing at least one polycyanate reactant having at least two functional groups... | 08/29/2006 |
| 7090747 | Belt for papermarking and process for producing papermaking belt A papermaking belt which prevents cracking and inhibits crack growth which includes a reinforcing substrate embedded in a thermosetting polyurethane layer so that the reinforcing substrate and the thermosetting polyurethane layer are integrated with each other and t... | 08/15/2006 |
| 7091297 | Shape memory polymers based on semicrystalline thermoplastic polyurethanes bearing nanostructured hard segments Thermoplastic polyurethanes having an alternating sequence of hard and soft segments in which a nanostructured polyhedral oligomeric silsesquioxane diol is used as a chain extender to form a crystalline hard segment constituting SMPs. The polyurethanes are formed by... | 08/15/2006 |
| 7087698 | Method of preparing an optical polymerizate The present invention is directed to a novel method of preparing a polymerizate, which includes the step of polymerizing a two-component composition, which includes: a first component containing at least one polycyanate reactant having at least two functional groups... | 08/08/2006 |
| 7081287 | High performance thermoplastic vulcanizate A high performance thermoplastic hose useful as a power steering hose, the high performance thermoplastic hose comprising a high performance engineering thermoplastic such as polyurethane and a chlorine-containing polyolefin such as chlorinated polyethylene, chlorin... | 07/25/2006 |
| 7060777 | Polyurethane material for a golf ball cover A curative blend for a thermosetting polyurethane material that allows for a polyurethane material with greater durability is disclosed herein. The curative blend is composed of 4,4′-methylenebis-(2,6-diethyl)-aniline and a second curing agent. A preferred polyure... | 06/13/2006 |
| 7045650 | Polyurethane elastomers having improved physical properties and a process for the production thereof A polyol composition having a number average molecular weight of from about 1,000 to about 3,000 Daltons is made up of (1) at least 60% by weight of a low monol polyoxypropylene polyol having a number average molecular weight of from about 2,000 to 12,000 Da and a d... | 05/16/2006 |
| 7038003 | Polyether allophanates stable towards discolouration A process for preparing polyisocyanate prepolymers containing allophanate structural units that includes reacting a) one or more polyisocyanates with b) one or more polyetherpolyols containing less than or equal to... | 05/02/2006 |
| 6992142 | Thin-layer-covered golf ball with improved velocity A golf ball comprising a center comprising a polybutadiene having a molecular weight of greater than 200,000 and a resilience index of at least about 40; and a cover layer comprising a polyurethane composition formed from a prepolymer having no greater than 7.5 perc... | 01/31/2006 |
| 6987159 | Solid golf ball A solid golf ball with a polyurethane cover having satisfactory formability and ball properties. The solid golf ball has a solid core, and a polyurethane cover for covering the solid core, wherein the difference in Shore D hardness between a center portion and a sur... | 01/17/2006 |
| 6974854 | Golf ball having a polyurethane cover A golf ball with a cover composed of a thermosetting polyurethane that has increased resistance to yellowing is disclosed herein. The golf ball of the present invention is able to accomplish this by providing a cover composed of a thermosetting polyurethane material... | 12/13/2005 |
| 6971960 | Insert for golf club head An insert composed of a thermoplastic polyurethane materials is disclosed herein. The thermoplastic polyurethane insert is disposed in a recess of the club head in which the recess has a depth that is greater than the thickness of the insert. The thermoplastic polyu... | 12/06/2005 |
| 6964626 | High temperature polyurethane/urea elastomers The present invention relates to molded polyurethane/urea elastomers, and specifically to improved polyurethane/urea elastomers having high temperature stability to about 140–150° C. and low temperature flexibility at about −35–(−40)° C., for use in dynami... | 11/15/2005 |
| 6946539 | Polyurethane and polyurethane-urea comprised of poly(trimethylene-ethylene ether) glycol soft segment Polyurethane or polyurethane-urea is comprised of poly(trimethylene-ethylene ether) glycol as a soft segment. The polyurethane or polyurethane-urea preferably comprises about 10 to about 90% soft segment and is prepared from: (a) p... | 09/20/2005 |
| 6939939 | Polyurea/urethane optical material and method for making it A polyurea/urethane material and method for making it provides for improved optical parts. The material allows for ease of manufacture of parts having good optical properties, high hardness, low density, and good impact resistance. The method provides for related ma... | 09/06/2005 |
| 6933336 | Golf ball The present invention provides a golf ball having a polyurethane cover, wherein the polyurethane cover is formed by curing a polyurethane cover composition which comprises an isocyanate group terminated polyurethane prepolymer comprising a specific alicyclic diisocy... | 08/23/2005 |
| 6903179 | Polyurethane/ureas useful for the production of spandex and a process for their production Segmented polyurethane/ureas useful in the production of spandex are produced by chain extending an isocyanate-terminated prepolymer in the presence of a solvent. The isocyanate-terminated prepolymer is formed by reacting a stoichiometric excess of an isocyanate wit... | 06/07/2005 |
| 6903167 | Polyurethane prepolymers comprising NCO groups and a low content of monomeric polyisocyanate Polyurethane prepolymers containing NCO (isocyanate) groups and having a low content of monomeric polyisocyanate, processes for their production and uses employing these prepolymers. The polyurethane prepolymers of the invention are produced from by a reaction emplo... | 06/07/2005 |
| 6852823 | Polyurethane and polyurethane-urea elastomers from polytrimethylene ether glycol Polyurethanes or polyurethane-ureas prepared from: (a) polytrimethylene ether glycol having a number average molecular weight in the range of about 1,000 to about 4,000 and unsaturated end groups in the range of about 0.003 to about 0.015 meq/g; (b) diisocyanate; an... | 02/08/2005 |
| 6846898 | Golf ball having a urethane cover The invention provides an improved golf ball having a thermosetting polyurethane cover that enables the ball to maintain its ball characteristics even under a severe condition such as a rainy weather or a very hot weather under a burning sun. The golf ball has a cov... | 01/25/2005 |
| 6835793 | Golf ball having a polyurethane cover A solid golf ball having a polyurethane cover and containing satisfactory formability and ball properties. The golf ball provides good shot feel, controllability, and resilience by adjusting the hardness and the thickness of the polyurethane cover, and the hardness ... | 12/28/2004 |
| 6818724 | Thin-layer-covered golf ball with inproved velocity A golf ball comprising a center comprising a polybutadiene having a molecular weight of greater than 200,000 and a resilience index of at least about 40; and a cover layer comprising a polyurethane composition formed from a prepolymer having no greater than 7.5 perc... | 11/16/2004 |
| 6815521 | Multi-piece golf ball A multi-piece golf ball with a two-part curing type polyurethane cover is provided, which is satisfactory in moldability and ball characteristics such as a abrasion resistance and a carry. The multi-piece golf ball according to this invention has a core having an in... | 11/09/2004 |
| 6777524 | Polyether polyurethane Disclosed is a polyether polyurethane comprising (A) at least one polyisocyanate having two or more isocyanate groups, which is selected from the group consisting of an aromatic polyisocyanate and an aliphatic polyisocyanate; (B) a polyoxytetramethylene glycol (PTMG... | 08/17/2004 |
| 6734272 | Polyurethane resin composition and optical lens having impact resistance A polyurethane resin composition for casting is provided which for use as a molding material for optical lenses, resistance to discoloration and durability are excellent and the pot life is long enough take time for casting process. It comprises a polyisocyanate, a ... | 05/11/2004 |
| 6689860 | Solid golf ball There is provided a solid golf ball comprising a multi-piece core and a cover made from polyurethane obtained by curing an isocyanate group-terminated urethane prepolymer including a residual polyisocyanate monomer content of not more than 0.1% by mass us... | 02/10/2004 |
| 6686436 | Solid golf ball There is provided a solid golf ball comprising a core and a cover made from polyurethane obtained by curing an isocyanate group-terminated urethane prepolymer including a residual polyisocyanate monomer content of not more than 0.1% by mass using an aroma... | 02/03/2004 |
| 6683152 | Polyurethane golf club inserts An insert for a golf club, wherein the insert is formed of a polyurethane composition comprising a prepolymer comprised of a polyol and a polyisocyanate, and a curing agent; and wherein the polyisocyanate is selected from the group consisting of 4,4'-diph... | 01/27/2004 |
| 6613864 | High temperature resistant polyurethane polymers A polyurethane composition useful for the manufacture of an elastomeric part is provided. The polyurethane composition comprises a polyisocyanate prepolymer and an active hydrogen containing compound, wherein from about 10 to about 60 percent by weight of... | 09/02/2003 |
| 6593443 | Wound-core golf ball A wound-core golf ball having a polyurethane cover is disclosed. The polyurethane cover is formed by curing a composition including an isocyanate group terminated polyurethane prepolymer containing a residual polyisocyanate monomer in an amount of not mor... | 07/15/2003 |
| 6552155 | Polyaldimines of oligomeric aminobenzoic acid derivatives, and their use for preparation of moisture-curable, storage-stable, one-part polyreas The invention relates to polyaldimines of formula [1] and their use within moisture curable one part polyurea compositions. ##STR1## wherein j is an integer of 3 to 30 and R2 is unsubstituted homocyclic or heterocyclic aryl radical or alkyl, al... | 04/22/2003 |
| 6525131 | Aromatic diamine polyurethane curatives with improved stability Disclosed herein is a composition comprising an aromatic diamine that is a solid at room temperature and a stabilizing quantity of a hindered amine light stabilizer and its use as a polyurethane curing agent.... | 02/25/2003 |
| 6420509 | Mixable room temperature castable polyurethane system The present invention relates to a polyurethane compound which has particular utility as a potting compound for fan exit guide vane assemblies of commercial gas turbine engines. The polyurethane compound comprises a formulation of polyurethane prepolymers... | 07/16/2002 |
