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| Number | Title | Issue Date |
| 7468405 | Increase in the melting point and the enthalpy of melting of polyamides by a water treatment A method for increasing at least one of the following two parameters of a polyamide: (I) its melting point and (ii) its enthalpy of melting ΔHm, in which: this polyamide is brought into contact in the solid state with w... | 12/23/2008 |
| 7300663 | Adhesion and sealing of tissue with compositions containing polyfunctional crosslinking agents and protein polymers Proteinaceous polymers having repetitive units from naturally occurring structural proteins are employed as backbones for functionalities for crosslinking to provide strongly adherent tissue adhesives and sealants. Particularly, block copolymers of elastin and fibro... | 11/27/2007 |
| 7166687 | Translucent thermoplastic composition, method for making the composition and articles molded there from A thermoplastic composition comprising a matrix of a polycarbonate polymer in which are embedded polysiloxane domains with an average domain size between 20 and 45 nanometers. Said compositions can be obtained by combining a first polycarbonate/poly(diorganosiloxane... | 01/23/2007 |
| 7124768 | Method for transferring aqueous polymer dispersions from one container to another container A method of transferring an aqueous polymer dispersion with a temperature ≧50° C. from a vessel 1 via a connecting line to a vessel 2 is described. ... | 10/24/2006 |
| 7067578 | Method for preparing latex Process for the preparation of latices by batchwise radical polymerization of one or more monomers, comprising the participation, in the polymerization, of: (a) one or more fine dispersions of one or more finely dispersed monomers and (b) one or more seed latices of... | 06/27/2006 |
| 7005471 | Flame-retarded poly(ester)carbonates A thermoplastic molding composition comprising poly(ester)carbonate is disclosed. The composition that is characterized by its flame resistance contains a PTFE blend in an amount of 0.2 to 0.6% and an organic salt of an alkali metal or alkaline earth metal in an amo... | 02/28/2006 |
| 6995212 | Flame retardant, thermoplastic polycarbonate molding compositions A flame-retardant thermoplastic molding composition is disclosed. The composition contains aromatic polycarbonate resin and sufficient amounts of poly(tetrafluoroethylene) and sulfo-modified polyester, that are effective to impart to the composition flame resistance... | 02/07/2006 |
| 6911488 | Physical methods of dispersing characteristic use particles and compositions thereof The present invention provides compositions that are capable of being dispersed in a target medium. The compositions include characteristic use particles entrapped within a physical entrapment phase, wherein the physical entrapment phase is dispersible in the target... | 06/28/2005 |
| 6740691 | Removal of volatile organic compounds from polymer dispersions A process for treating an aqueous polymer latex/dispersion of synthetic polymers prepared by polymerizing one or more monomeric materials for at least 80%, involving: A. adding to the polymer latex/dispersion a sufficient amount of at least one reducing agent... | 05/25/2004 |
| 6670411 | Process for devolatilizing an acrylic resin and process for preparing a powder coating composition A process for separating a solvent and low molecular weight material from an acrylic resin by adding a hindered amine light stabilizer having at least one aminoether group to a mixture of the organic solvent, low molecular weight material and the acrylic ... | 12/30/2003 |
| 6174991 | Process for making stabilized non-colored rubber A process for the recovery of an initially living polymer from a cement produced in a polymerization process. The living polymer cement is shortstopped, washed, stabilised, coagulated and dried. The recovery process comprises adding a short stop to the po... | 01/16/2001 |
| 6034209 | Method of recovering low-boiling substances from a polymer latex In a process for recovering low-boiling point substances wherein a low-boiling point substance-containing polymer latex is atomized from a nozzle equipped at the upper part of an evaporator to evaporate the low-boiling point substances, the polymer latex ... | 03/07/2000 |
| 5945251 | Process for producing purified solutions of blocked polyhydroxystyrene resins 1. A process for preparing a purified solution of blocked polyhydroxystyrene resin in reaction/photoresist solvent, comprising the steps of: (1) forming an impure reaction solution comprising blocked polyhydroxystyrene resin and acidic catalyst in reactio... | 08/31/1999 |
| 5929206 | Continuous process for removing the residual monomer or monomers from an aqueous latex of a synthetic polymer and device for carrying it out The latex is treated by passage through a heat exchanger consisting of a closed chamber 1 divided into two distinct superposed parts, the unobstructed upper part 3 being placed under reduced pressure and communicating with a plant for recovery of the resi... | 07/27/1999 |
| 5773493 | Method of dispersing solid additives in polymers and products made therewith A method for dispersing solid forms of additives in polymers involves adding dispersions or solutions of additive(s) to a solution of polymer in a tubular mixer (preferably in the presence of a stationary mixer). The mixer leads to a steam precipitation s... | 06/30/1998 |
| 5616645 | Gelled fluoride resin fine particle dispersion, method of production thereof, and preservation method for an alkaline inorganic hardened body utilizing the same The present invention relates to a gelled fluoride resin fine particle dispersion for use as a coating, to a method of production thereof, and to a method using this gelled fluoride resin fine dispersion to protect an alkaline inorganic hardened body. The... | 04/01/1997 |
| 5539004 | Process for recycling resin scrap and apparatus therefor A process and an apparatus for recycling resin scrap including a thermosetting resin paint film and a thermoplastic resin substrate as its major components, wherein the resin scrap is supplied into a passage of a cylinder, melted, and delivered by deliver... | 07/23/1996 |
| 5534564 | Process for the color stabilization of an aqueous N-vinyl heterocyclic copolymer solution This invention relates to a process for the production of a substantially odorless, color stable N-vinyl heterocyclic copolymer in pure deionized water or in aqueous alcoholic solution which includes contacting an alcohol solution of the copolymer, under ... | 07/09/1996 |
| 5521230 | Method of dispersing solid additives in polymers and products made therewith A method for dispersing solid forms of additives in polymers involves adding dispersions or solutions of additive(s) to a solution of polymer in a tubular mixer (preferably in the presence of a stationary mixer). The mixer leads to a steam precipitation s... | 05/28/1996 |
| 5516818 | Method for removing small amounts of high boiling point organic compound from aqueous polymerization products A process for achieving a significant reduction in the volatile organic compound content (VOC) of an aqueous polymerization system includes the steps of contacting the aqueous polymerization system with an organic solvent and allowing said organic solvent... | 05/14/1996 |
| 5486583 | Defoaming compositions for ABS latices A mixture which is suitable as a defoamer, especially for ABS latices, comprising (A) a C10 -C20 alcohol, (B) a mineral oil, (C) an ester from a thiodicarboxylic acid with 4 to 8 carbon atoms and a C10 -C20 alco... | 01/23/1996 |
| 5430127 | Process for minimizing residual monomers Aqueous emulsions, at least 80% of which have been polymerized, are treated by a process which comprises the separate steps of: a) initially treating the emulsion with a sufficient amount of a free radical generator in an amount and for a time sufficient ... | 07/04/1995 |
| 5420194 | olefin/maelic anhydride copolymers as antifoulants in ethylene process water stripper systems A method for dispersing heavy hydrocarbons in an ethylene process water stripper tower, the method comprising the steps of: introducing an effective amount of a dispersant into the ethylene water stripper, the dispersant comprising a copolymer of an ... | 05/30/1995 |
| 5407974 | Solution polymer recovery process An improved process is provided for the recovery of a polymer from a solution thereof in a process wherein the polymer solution is contacted with hot water and steam to yield a slurry in water of polymer particles and a vapor stream comprising water vapor... | 04/18/1995 |
| 5376703 | Process for lowering the residual monomer content in aqueous plastic dispersions based on polyvinyl esters Process for lowering the residual monomer content in aqueous plastic dispersions based on polyvinyl esters. Preparation of vinyl ester polymers or vinyl ester copolymers containing aqueous plastic dispersions having reduced contents of undesired residual ... | 12/27/1994 |
| 5266211 | Process for precipitating polymers This invention concerns a method for precipitating polymers from a liquid using at least one precipitant fluid, including a feed line, a nozzle plate having at least one outlet orifice for a polymer containing fluid with the outlet orifice communicating w... | 11/30/1993 |
| 5196507 | Process for producing granules of polycarbonate and composition thereof Polycarbonate granules are produced by adding a solution of polycarbonate in an organic solvent to a suspension composed of water, an anti-solvent for polycarbonate and polycarbonate powder with stirring while evaporating and removing the organic solvent ... | 03/23/1993 |
| 4977241 | Particulate polymer and preparation process thereof Disclosed herein is a particulate polymer prepared by the agglomeration of polymer particles contained in a polymer latex. The particulate polymer is composed of primary particles having particle sizes of at least 20 μm and/or secondary particles formed ... | 12/11/1990 |
| 4874841 | Particulate polymer and preparation process thereof Disclosed herein is a particulate polymer prepared by the agglomeration of polymer particles contained in a polymer latex. The particulate polymer is composed of primary particles having particle sizes of at least 20 μm and/or secondary particles formed ... | 10/17/1989 |
| 4529753 | Chemical/steam stripping Residual monomer may be removed from a polymeric emulsion by subjecting it to pressure and temperature conditions so that the ambient vapor pressure is less than the vapor pressure in the emulsion and concurrently and continuously during the treatment add... | 07/16/1985 |
| 4402937 | Preparation of PVP-iodine A process for the preparation of PVP-iodine having an iodine:iodide ratio of about 2:1 and a partition coefficient of 180-250, by reacting PVP with elementary iodine in the presence of formic acid, oxalic acid or an ammonium salt or amide of carbonic acid... | 09/06/1983 |
| 4383056 | Method of converting resin solution to aqueous dispersion Solutions of amine-salified phosphoresins and the free amine in organic solvents are converted to stable dispersions of the salified resins in water by steam stripping under conditions such that at least part of the water is provided as condensed steam.... | 05/10/1983 |
| 4320114 | Manufacture of aqueous polyvinylpyrrolidone-iodine solutions Aqueous solutions of polyvinylpyrrolidone-iodine, generally referred to as PVP-iodine, which is finding increasing use because of its germicidal, bactericidal, fungicidal and disinfectant properties.... | 03/16/1982 |
| 4283526 | Method of treating polymerlatices A method of continuously treating an aqueous latex of a synthetic polymer which contains unreacted residual monomer from the polymerization reaction used for the production of the polymer, which method comprises feeding the aqueous latex as a spray into a... | 08/11/1981 |
| 4269951 | Purification of wet strength resins Certain wet strength resins based on the epichlorohydrin/polyamine reaction which are characterized by extremely long gel times can be purified from epichlorohydrin residuals by azeotropic distillation.... | 05/26/1981 |
| 4243566 | Preparation of latex from solvent dispersed polymer composition The preparation of stable aqueous latices from solvent dispersions of elastomers and other high polymer compositions has presented problems including excessive viscosity during processing and foaming, which have produced losses and increased costs. Herein... | 01/06/1981 |
| 4233437 | Continuous process for the removal of monomeric impurities from aqueous dispersions of homo- and copolymers of vinyl chloride In a process for removing monomeric impurities from an aqueous dispersion of homopolymers or copolymers of vinyl chloride having a surface tension below 60 dyn/cm. by treatment with steam while avoiding foam formation by a rapid lowering of the pressure a... | 11/11/1980 |
| 4229568 | Method of discharging gaseous vinyl chloride monomer from a polymerization reactor The unreacted gaseous vinyl chloride monomer still remaining in a polymerization reactor from which the polymerizate has been removed can be discharged by blowing steam into the reactor from its top so that the gaseous monomer is pushed downward and moved... | 10/21/1980 |
| 4224437 | Process for prevention of foaming when steam-stripping residual monomer from aqueous polymer dispersions In the process for steam-stripping residual monomer from an aqueous polymer dispersion comprising injecting steam into an aqueous polymer dispersion containing residual monomers and the customary amounts of emulsifiers and/or protective colloids, said dis... | 09/23/1980 |
| 4209436 | Process for the removal of non-converted monomers from a copolymer of acrylonitrile Process for the removal of unconverted monomers from a copolymer of acrylonitrile with one or more monomers copolymerizable therewith by a treatment with steam wherein a latex of said copolymer obtained from a polymerization stage is subjected to a contin... | 06/24/1980 |
