Did You Know...
...that several people are credited with the invention of the flush toilet? Most people have heard of Thomas Crapper (1837-1910), the sanitary engineer who invented the valve-and-siphon arrangement that made the modern toilet possible. Another claimant to "the throne" was British inventor Alexander Cumming who patented a toilet in 1775. Then there's a nameless Minoan (a native of ancient Crete) who lived 4,000 years ago who supposedly was ahead of his time and created the first flush toilet!
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| Number | Title | Issue Date |
| 7674839 | Methods for the production of polymer carrier materials based on carbon hydrate-bis(meth)acryl-amides The invention relates to methods for the production of polymer carrier materials for solid phase synthesis, particularly for peptide synthesis. (Meth)acrylamide derivatives based on carbon hydrates, which can also contain other protective groups, are polymerized by ... | 03/09/2010 |
| 7351752 | Thermo-expansive microspheres, their production process and their application The present invention provides thermo-expansive microspheres comprising thermoplastic resinous shell and a blowing agent being encapsulated in the shell, the blowing agent which is a fluorine-containing C2-10 compound having ether linkage, being free of c... | 04/01/2008 |
| 7314899 | Process for the preparation of poly (urethane-acrylic) copolymer dispersion for industrial applications This invention describes a process to synthesize water based coating composition having polyurethane and vinyl polymers in the same backbone, which can be used as topcoat in leather. Polyurethane having iniferter groups are synthesized which is then used to incorpor... | 01/01/2008 |
| 7276290 | Cryogenic insulation Putty-like gap-filling compounds for insulation that can be utilized at temperatures from about −420° F. (−250° C.) up to about 500° F. (260° C.) are described herein. Embodiments of these compounds contain about 25-50 volume percent base material, about 50-... | 10/02/2007 |
| 7198205 | Silicone protective coating A silicone polymer gel/coating which can be sprayed from an aerosol can preferably has a viscosity of 2,000–5,000 cps. and provides a moisture resistant coating of preferably 20–30 mils to protect components in telephone installation and maintenance applications... | 04/03/2007 |
| 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 |
| 7166248 | Reduced VOC emission alkenyl aromatic polymer foams and processes A method for producing an alkenyl aromatic polymer foam structure that comprises melting at least one alkenyl aromatic polymer resin. An effective amount of blowing agent mixture is dissolved in the at least one alkenyl aromatic polymer. The blowing agent mixture co... | 01/23/2007 |
| 7074880 | Polyimide aerogels, carbon aerogels, and metal carbide aerogels and methods of making same A preparation process of polyimide aerogels that composed of aromatic dianhydrides and aromatic diamines or a combined aromatic and aliphatic diamines is described. Also descried is a process to produce carbon aerogels derived from polyimide aerogel composed of a ri... | 07/11/2006 |
| 7045556 | Polyolefin foams made with isopentane-based blowing agents A blowing agent blend for making polyolefin foams comprising isopentane and at least one co-blowing agent. The co-blowing agent is either a physical co-blowing agent having a boiling point less than 28° C., or a chemical co-blowing agent, or combinations thereof. T... | 05/16/2006 |
| 6956066 | Polyimide foams A fully imidized, solvent-free polyimide foam having excellent mechanical, acoustic, thermal, and flame resistant properties is produced. A first solution is provided, which includes one or more aromatic dianhydrides or derivatives of aromatic dianhydrides, and may ... | 10/18/2005 |
| 6800668 | Syntactic deformable foam compositions and methods for making The invention relates to methods for preparing a syntactic foam composition suitable for use as a carrier for chemicals or other compounds, including pharmaceuticals. The invention further relates to compositions prepared in accordance with the methods of the presen... | 10/05/2004 |
| 6787580 | Water-free preparation process for multimodal thermoplastic polymer foam and foam therefrom Prepare a multimodal thermoplastic polymer foam having a distribution of large and small cells in a substantial absence of water by using a blowing agent stabilizer. Multimodal foams of the present invention have blowing agent stabilizer predominantly located proxim... | 09/07/2004 |
| 6777454 | Vesiculated polyester granules This invention relates to a process of preparing vesiculated granules of crosslinked carboxylated polyester resin utilising a particular class of non-alkylphenolethoxylate surfactant. ... | 08/17/2004 |
| 6753356 | Foaming compositions Use as foaming agents having a low environmental impact of azeotropic or near azeotropic compositions using difluoromethoxy-bis(difluoromethyl ether) and/or 1-difluoromethoxy-1,1,2,2-tetrafluoroethyl difluoromethyl ether. ... | 06/22/2004 |
| 6696504 | Extruded styrene resin foams, and methods for producing the same Production of extruded styrene resin foams which are excellent in environmental compatibility and retain highly efficient thermal insulation property and have appropriate strength properties is disclosed which is characterized by using as a blowing agent ... | 02/24/2004 |
| 6599946 | Blowing agent composition and polymeric foam containing a normally-liquid hydroflurocarbon and carbon dioxide The present invention relates to blowing agent compositions for polymeric foams that contain carbon dioxide and a hydrofluorocarbon having a boiling point of 14° C. or higher and lower than about 120° C. The present invention also relates to processes f... | 07/29/2003 |
| 6545062 | Production of water-expandable styrene polymers The invention relates to a process for the production of styrene polymers containing water as expanding agent by suspension polymerization of styrene in the presence of an emulsifying auxiliary, the suspending agent being a mixture of water and an organic... | 04/08/2003 |
| 6476080 | Blowing agent compositions containing hydrofluorocarbons and a low-boiling alcohol and/or low-boiling carbonyl compound The present invention relates to blowing agent compositions that contain at least one hydrofluorocarbon having a boiling point of 30° C. or higher and lower than about 120° C., at least one hydrofluorocarbon having a boiling point lower than 30° C., an... | 11/05/2002 |
| 6472444 | Closed cell phenolic foam A closed cell phenolic foam is formed from a phenolic resin, a blowing agent such as HCFC141b, a catalyst and less than 2.5% by weight relative to the resin of at least one hydrofluoroether or an azeotrope formulation thereof. 1-methoxy-nonafluorobutane a... | 10/29/2002 |
| 6469078 | Molecular weight increase and modification of polycondensates This invention relates to a process for increasing the molecular weight and/or for the modification of polycondensates during the processing in the melt, which comprises adding to the polycondensate a blend comprising a) at least one polyfunctional anhydride (... | 10/22/2002 |
| 6451348 | Method of manufacturing porous matrix-type controlled release systems using emulsion technique A method of manufacturing a porous matrix-type drug delivery system is provided. It comprises the steps of: dispersing, stirring, and emulsifying an aqueous solution of a drug in an organic solvent having a polymer compound and a surface active agent solv... | 09/17/2002 |
| 6444713 | Foaming compositions and methods for making and using the compositions A low-temperature foam compositions and that are produced from an epoxy compound and an acid source can be substantially free of polyurethane or isocyanate chemistry. The disclosed compositions and precursors thereof reduce, if not eliminate, the presence... | 09/03/2002 |
| 6414044 | Foamed caulk and sealant compounds Stable foam caulk, sealant and insulation compositions are disclosed. These compositions comprise aqueous emulsions of film forming polymers in combination with microfibers. The preferred film forming polymers and the microfibers include functional groups... | 07/02/2002 |
| 6403663 | Method of making foamed materials using surfactants and carbon dioxide A method of producing a foamed material comprises contacting a material with a fluid mixture comprising carbon dioxide and a surfactant, wherein the surfactant facilitates the dissolution of the carbon dioxide into the material and then foam the material ... | 06/11/2002 |
| 6379689 | Article for controlled and substantially uniform release of a volatile organic substance An article for controlled and substantially uniform release of a volatile active organic substance into the surrounding atmosphere includes a silicone elastomer matrix of desired shape in which are dispersed the volatile substance and an effective amount ... | 04/30/2002 |
| 6376059 | Polyethylene foams and methods of their production High-density polyethylene (HDPE) foams that are essentially free of residual chemical blowing agents and reaction-by-products of chemical blowing agent are provided. The HDPE foams can be either microcellular foams or conventional foams. She foams can be ... | 04/23/2002 |
| 6350789 | Extruded foam product with 134a and alcohol blowing agent The present invention generally relates to methods for preparing extruded foam products and more particularly to a methods for producing such products with a blowing agent containing 134a and an alcohol.... | 02/26/2002 |
| 6340714 | Chloride-sensitive electrode membrane A membrane for use in chloride-sensitive electrodes, comprises a polymer matrix with at least one electroactive component. The polymer matrix of the membrane contains an epoxy resin with an amino compound as a curing agent. For the purpose of reducing the... | 01/22/2002 |
| 6339109 | Method of pelletization of polymer A method of preparing cellular pellets from a prepolymer comprising a blowing agent, the method comprising the steps of: a) extruding the prepolymer through a die, the die maintained at conditions such that the blowing agent remains in the condensed phase in t... | 01/15/2002 |
| 6333364 | Silicone rubber compositions A silicone rubber composition comprising (A) 100 parts by weight of a heat curable organopolysiloxane composition, (B) 0.1-30 parts by weight of unexpanded or expanded organic resin-base microspheres, and (C) 0.5-50 parts by weight of a polyhydric alcohol... | 12/25/2001 |
| 6315932 | Processes for the production of extruded foams of styrene resins An extrusion foaming method for obtaining a styrene resin foam by introducing a blowing agent into the resin under pressure by which a foam having excellent heat insulating property and compressive strength can be produced with excellent stability using a... | 11/13/2001 |
| 6300385 | Organic porous material The present invention provides an organic porous material having equivalent thermal insulating properties to those of a porous material of a silica material and improved brittleness. The organic porous material of the present invention is an aggregate of ... | 10/09/2001 |
| 6284359 | Starch-based core products for use in rolled paper goods A biodegradable, water dispersible shaped core product useful in winding or rolling and storage of paper goods is provided by extruding starch which has a particle size of 800 to 1200 microns into an expanded, closed cell starch product.... | 09/04/2001 |
| 6274640 | Extruded foam product with 134a and alcohol blowing agent The present invention generally relates to methods for preparing extruded foam products and more particularly to a methods for producing such products with a blowing agent containing 134a and an alcohol.... | 08/14/2001 |
| 6271273 | Porous materials Porous organo polysilica dielectric materials having low dielectric constants useful in electronic component manufacture are disclosed along with methods of preparing the porous organo polysilica dielectric materials. Also disclosed are methods of forming... | 08/07/2001 |
| 6228898 | Biodegradable resin foam and method and apparatus for producing same Foam forming techniques are capable of permitting foaming of biodegradable resin to be positively and uniformly accomplished to provide a biodegradable resin foam with satisfactory quality. The biodegradable resin foam is made of biodegradable resin a mai... | 05/08/2001 |
| 6228897 | Continuous processing of powder coating compositions Systems, apparatus combinations and methods for producing a powder coating are provided wherein a stream of a powder coating precursor including at least one resin and at least one additional powder coating ingredient is contacted with a process fluid eff... | 05/08/2001 |
| 6160030 | High water content porous polymer The present invention relates to porous polymers comprising a perfluoropolyether unit, to a process for producing such porous polymers, in particular to a process for polymerising or copolymerising monomers incorporating perfluoropolyethers to form porous... | 12/12/2000 |
| 6146892 | Fibrillar matrices Methods and compositions are described that provide three-dimensional fibrillar matrices useful as, among other things, structural prosthetics and scaffolds for cells. The porous fibrillar matrices of the present invention have desirable mechanical proper... | 11/14/2000 |
| 6140379 | Chemically embossed metallocene polyethylene foam A textured metallocene polyethylene foam sheet suitable for use in a floor covering is made using a highly co-activated azodicarbonamide package which blows the metallocene polyethylene effectively. The preferred co-activators are zinc oxide and urea. The... | 10/31/2000 |
