Did You Know...
...that in the early 1940s GE engineer James Wright was charged with a task of utmost importance to the war effort: develop a cheap substitute for rubber that could be used to produce tires, gas masks and a whole host of military gear. Wright tackled the task diligently -- and wound up inventing Silly Putty.
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| Number | Title | Issue Date |
| 7439318 | Method for trace water analysis in cyclic siloxanes useful as precursors for low dielectric constant thin films An analytical technique for the accurate and precise measurement of trace water in chemical reagents, comprising the steps of combining a chemical reagent comprising ≦5 ppm water, with hexafluoroacetone (HFA), to form a sample mixture comprising at least the chemi... | 10/21/2008 |
| 7378266 | Process for the solvent-based extraction of polyhydroxyalkanoates from biomass Improved processes for extracting polyhydroxyalkanoate from a biomass containing the polyhydroxyalkanoate including the steps of: combining the biomass containing the polyhydroxyalkanoate with a solvent selected from lower chain ketones, and mixtures thereof to form... | 05/27/2008 |
| 7259231 | Extraction and fractionation of biopolymers and resins from plant materials A method for the extraction, separation, fractionation and purification of biopolymers from plant materials using supercritical and/or subcritical solvent extractions is disclosed. Specifically, the process can be used for the separation of resins and rubber from gu... | 08/21/2007 |
| 7189795 | Poly(arylene ether)s bearing grafted hydroxyalkyls for use in electrically conductive adhesives A poly(arylene ether) polymer includes polymer repeat units of the following structure: —(O—Ar1—O—Ar2)m—(O—Ar3—O—Ar4)n— where Ar1, Ar2, Ar | 03/13/2007 |
| 7183372 | Preparation of ketone-formaldehyde resins A process for preparing ketone-formaldehyde resins, especially acetophenone- and cyclohexanone-formaldehyde resins, having a low water content and high thermal stability and yellowing resistance, and a process for their production and their use. ... | 02/27/2007 |
| 7179878 | Poly(arylene ether) polymer with low temperature or UV crosslinking grafts and dielectric comprising the same Poly(arylene ether) polymers are provided having polymer repeat units of the following structure: wherein Ar1, Ar2, Ar3, and Ar4 are identical or different aryl radical... | 02/20/2007 |
| 7151158 | Method of preparing a poly(arylene ether), apparatus therefor, and poly(arylene ether) prepared thereby A method of precipitating a poly(arylene ether) includes combining a poly(arylene ether) solution with an antisolvent at a shear rate of greater than 50,000 sec−1. The high shear mixing conditions produce a poly(arylene ether) dispersion in which the po... | 12/19/2006 |
| 7148320 | Polymer purification Polymers derived from various monomers are purified by fractionalization of the crude polymers in a solvent/non solvent system via reverse precipitation. ... | 12/12/2006 |
| 7094867 | Method of continuously cleansing polyarylene sulfide A polymerizate slurry obtained through a reaction of an alkali sulfide source and an aromatic dihalide compound in an organic polar solvent and comprising polyarylene sulfide particles, a by-produced alkali metal salt and the polar organic solvent, is continuously c... | 08/22/2006 |
| 7081427 | Solid catalyst component for olefin polymerization A solid catalyst component for olefin polymerization comprising titanium, magnesium and a compound of the general formula (I) wherein R1 and R2 are independently a C3 straight or ... | 07/25/2006 |
| 7056956 | Method for recycling a plastic material Process for recycling a plastic, according to which the plastic is brought into contact with a solvent capable of dissolving the same and the plastic dissolved in the solvent is precipitated using a non-solvent in the presence of a phase-separating agent, in which t... | 06/06/2006 |
| 7049394 | Method for preparing free flow resin The present invention provides a method for producing a free flowing and/or non clumping resin that includes prior to drying, shrinking the resin under agitation. In one variant of the invention, the is a resin used in solid phase synthesis of peptides. In another a... | 05/23/2006 |
| 7041780 | Methods of preparing a polymeric material composite Methods to prepare a poly(arylene ether) and poly(alkenyl aromatic) polymeric material having reduced levels of particulate impurities are described. The polymeric material prepared is suitable for use in data storage media applications. ... | 05/09/2006 |
| 7041772 | Method for producing benzoxazine resin The present invention discloses a process for producing a benzoxazine resin which comprises the steps of reacting a phenol compound, an aldehyde compound and a primary amine in the presence of an organic solvent to synthesize a benzoxazine resin and removing generat... | 05/09/2006 |
| 7026433 | Continuous bioreactor process for the preparation of polyester cyclic oligomers A continuous process for the process for the enzyme-catalyzed preparation of cyclic ester oligomers from linear ester oligomers. The process may use a linear or recirculating reactor. ... | 04/11/2006 |
| 6979720 | manufacture of certain cyclic ester oligomers Enzymes which are capable of catalyzing esterifications and/or transesterifications such as selected lipases and esterases can, under specified conditions, convert certain lower linear oligomers of polyesters to their cyclic ester oligomers in quantities greater tha... | 12/27/2005 |
| 6936685 | Method for isolating polyorganosiloxanes The invention relates to a method for isolating polyorganosiloxanes from an aqueous dispersion, wherein the polyorganosiloxanes are separated from water in a dissolved form with the aid of an extraction agent. ... | 08/30/2005 |
| 6906168 | Process for fractionation/concentration to reduce the polydispersivity of polymers Methods of reducing the amount of undesirable by-products in the production of polymers are disclosed. The resulting polyetherimides have lower polydispersivity and enhanced thermomechanical properties. In some embodiments, cyclic and low molecular weight linear oli... | 06/14/2005 |
| 6787633 | Method and apparatus for preparing a poly(arylene ether) A method of precipitating a poly(arylene ether) includes preparing a poly(arylene ether) solution comprising a poly(arylene ether) and a solvent, combining the poly (arylene ether) solution with an antisolvent to form a poly(arylene ether) dispersion comprising a po... | 09/07/2004 |
| 6774157 | Biocompatible medical devices with polyurethane surface A system for improving the biocompatibility of medical devices present within a patient's body. In one embodiment, the present subject matter reduces the thrombogenicity of polyurethane materials in contact with the blood of a patient. In one embodiment, the medical... | 08/10/2004 |
| 6764986 | Process for producing particles of amine reaction products There is provided a process for producing particles of amine reaction product by means of an acid carrier. Processed amine reaction products and finished compositions incorporating such processed product are also herein provided. ... | 07/20/2004 |
| 6762221 | Use of naphthalenesulfonic acid-formaldehyde condensates products as drying aids Naphthalenesulfonic acid-formaldehyde condensates are used as assistants in the drying of aqueous polymer dispersions. Also described is a process for preparing polymer powders by drying, using these condensates; the polymer powders obtainable by the process;... | 07/13/2004 |
| 6670444 | Processes for synthesizing borohydride compounds The present invention relates to processes for producing borohydride compounds. In particular, the present invention provides efficient processes and compositions for the large-scale production of borohydride compounds of the formula YBH4 by th... | 12/30/2003 |
| 6657003 | Cell adhesion solution A cell adhesion solution of a cross-linked polymer for substrates includes an amino acid polymer, a buffered cross-linking agent, and deionized water (DI H2 O). In one example, the amino acid polymer is selected from a neutral or basic amino ac... | 12/02/2003 |
| 6649734 | Curable coating compositions having improved compatibility and scratch and mar resistance, cured coated substrates made therewith and methods for obtaining the same The invention provides coating compositions having improved scratch and mar resistance. The curable coating compositions of the invention comprise a film-forming component (A) comprising one or more active hydrogen containing components (a), and one or mo... | 11/18/2003 |
| 6593451 | Method of processing polyacrylonitrile The present invention involves a method of processing polyacrylonitrile into a predetermined form. The first step in this method includes preparing a solution of a room temperature solvent that will dissolve polyacrylonitrile at room temperature and, a ro... | 07/15/2003 |
| 6552163 | Method for fractioning poly (ethylene oxide) formed using a metallic cyanide catalyst A poly(ethylene oxide) polymer having low and high molecular weight fractions is fractionated by dissolving the polymer in a solvent for the low molecular weight fraction. A good separation of the low and high molecular weight fractions can be obtained. W... | 04/22/2003 |
| 6518395 | Method for producing reactive coating powder compositions Process for preparation powder coating formulations by pressure release of a composition comprising a low molecular mass inert compound, with release of the low molecular mass inert compound, in which process one or more base resins and one or more harden... | 02/11/2003 |
| 6437080 | Process for preparing polyarlethers Process for the preparation of a polymer composition comprising at least one aromatic or a mixture thereof, the process comprising: i) obtaining a reaction mixture comprising polymer precursors in a first fluid boiling in excess of 100 C.; ii) subjecting ... | 08/20/2002 |
| 6423821 | Method for producing poly(p-t-butoxystyrene) A method for producing poly(p-t-butoxystyrene), which comprises polymerizing p-t-butoxystyrene in a hydrocarbon type reaction solvent in the presence of a polymerization initiator, and, after termination of the polymerization reaction, conducting a separa... | 07/23/2002 |
| 6392010 | Process for the solid phase synthesis of aldehyde, ketone, oxime, amine, hydroxamic acid and ଲ-unsaturated carboxylic acid and aldehyde compounds This invention is directed to a process for the solid phase synthesis of aldehyde, ketone, oxime, amine, hydroxamic acid and ,ଲ-unsaturated carboxylic acid and aldehyde compounds and to polymeric hydroxylamine resin compounds useful therefor.... | 05/21/2002 |
| 6340580 | Methods for purifying polyhydroxy alkanoates A method is provided for isolating and purifying PHA from microbial or plant biomass that contains PHA. The method includes the step of extracting PHA from the biomass using at least one solvent while simultaneously subjecting the biomass to a filtration ... | 01/22/2002 |
| 6323256 | Biocompatible medical devices with polyurethane surface The present invention provides a method for improving the biocompatibility of devices, especially medical devices which are invasively present within a patient's body and the improved medical device. The present invention particularly reduces the thrombog... | 11/27/2001 |
| 6294645 | Dry-strength system The invention relates to resin systems useful for imparting dry-strength to paper without substantially increasing the paper's wet-strength wherein the resin system comprises a cationic component and an anionic component. The invention also relates to the... | 09/25/2001 |
| 6241828 | Method of cleaning or purifying elastomers and elastomeric articles which are intended for medical or pharmaceutical use A method is disclosed for removing impurities from an elastomer intended for medical or pharmaceutical use, which includes a step of performing a first solvent extraction process on the elastomer by contacting the elastomer with a first extracting solvent... | 06/05/2001 |
| 6166174 | Method to prepare processable polyimides with non-reactive endgroups using 1,3-bis(3-aminophenoxy) benzene Polyimide copolymers were obtained containing 1,3-bis(3-aminophenoxy)benzene (APB) and other diamines and dianhydrides and terminating with the appropriate amount of a non-reactive endcapper, such as phthalic anhydride. Homopolymers containing only other ... | 12/26/2000 |
| 6111064 | Pressure polymerization of polyester A process is disclosed for the preparation of a polyester polymer or polyester copolymer under superatmospheric pressure conditions in a pipe or tubular reaction under turbannular flow conditions. Reaction material having a glycol equivalents to carboxyli... | 08/29/2000 |
| 6103861 | Strength resins for paper and repulpable wet and dry strength paper made therewith An ionic thermosettable resin useful for imparting wet and dry strength to paper is made by: (a) providing a copolymer comprising monomer units derived by copolymerization of acrylamide or alkyl-substituted acrylamide and diallylamine or an acid salt ther... | 08/15/2000 |
| 6093675 | Low VOC emulsion Process for reducing the content of residual monomers, expressed as total VOC lower than 600 ppm and deriving from the monomers utilized to obtain the emulsion lower than 100 ppm; having an amount of wet coagula lower or equal to 500 ppm after wet filteri... | 07/25/2000 |
| 6069181 | Process for recycling polyarylene sulfides The present invention relates to a process for obtaining polyarylene sulfide from polyarylene sulfide-containing material. For this purpose, the polyarylene sulfide-containing material is treated with a solvent in which it dissolves, and is subsequently r... | 05/30/2000 |
