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8481613 Solvent transfer process for organic polymers  
An organic polymer is transferred from one solvent to another. In a first step, a solution of the polymer in a first solvent is divided into droplets, dispersed into a liquid phase such as water...
8420737 Method for the production of co-extrudates composed of polystyrene and of a crosslinked polyvinylpyrrolidone with reduced residual styrene monomer content  
A method for removing residual styrene monomers from co-extrudates comprising polystyrene and water-insoluble, crosslinked polyvinylpyrrolidone, which comprises subjecting an aqueous suspension of...
7956156 Method for the removal of isobutene oligomers from an isobutene polymer  
A process is described for removing isobutene oligomers from an isobutene polymer by stripping the isobutene polymer with vapors of a saturated hydrocarbon having at least 8 carbon atoms and at...
7790804 Process for stripping polymer polyols  
The invention provides a process for the purification of polymer polyols that ensures a reduction of acrylonitrile, styrene as well as the residual amounts of optionally used chain regulator, and...
7612128 Method for preparing styrene-butadiene latex  
The present invention relates to a method for preparing a styrene-butadiene latex, more particularly to a method for preparing a styrene-butadiene latex comprising the steps of adding a transition...
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...
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...
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...
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....
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...
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...
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...
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...
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...
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...
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...
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...
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...
5420194 αolefin/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...
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...
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...
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...
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...
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...
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...
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...
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...
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.
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...
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...
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...
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...
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...
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...
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...
4197400 Process for removing monomer residues from acrylonitrile polymers  
In order to remove monomer residues from an acrylonitrile polymer which has been produced in the form of particles, for the purpose of reducing the residual monomer content to virtually negligible...
4197399 Process for removing residual vinyl chloride from vinyl chloride polymers in aqueous dispersion  
Process for removing the residual vinyl chloride monomer present after polymerisation in vinyl chloride polymers in the form of an aqueous dispersion which is heated to a temperature at least...
4193903 Rapid removal of residual monomers from acrylonitrile copolymers  
A method for stripping residual monomer from acrylonitrile copolymers which have been prepared in aqueous suspension by steam stripping acrylonitrile monomer from the suspension at a temperature...
4188351 Elastomer blend composition of a sulfonated EPDM terpolymer and a polystyrene resin  
This invention relates to heterogeneous elastomeric blends having improved rheological properties of a major portion of a neutralized sulfonated elastomeric polymer with a minor portion of a...
4168373 Removal of residual vinyl chloride monomer from polyvinyl chloride latex  
An improved process for reducing the amount of residual vinyl chloride monomer in polyvinyl chloride latex to acceptable levels is provided. Carefully controlled sparging and defoaming removes the...
4128516 Process for the gentle degasification of coagulation-sensitive PVC latices  
In the process for the gentle degasification of coagulation-sensitive PVC latices in a confined space under reduced pressure and stirring at elevated temperatures with steam injection onto the...
4032501 Dry-blendable solution rubber powders and process  
Homogeneous, storage-stable dry-blendable hydrocarbon solution rubber powders containing carbon black, hydrocarbon solution rubber, and, foam inhibiting surfactant, said solution powders being of...
4032497 Method and apparatus for removal of unreacted monomer from synthesized high polymer latex  
From a synthesized high polymer latex, the unreacted monomer remaining therein can be removed efficiently by causing a hollow cylinder inclined by a gradient of 1/100 to 1/10 with reference to the...
4017445 Process for the removal of vinyl chloride from polyvinyl chloride dispersions  
Residual vinyl chloride contents of aqueous polyvinyl chloride dispersions is reduced to less than 50 ppm by withdrawing steam and vinyl chloride contained in a boiling aqueous polyvinyl chloride...
4016128 Preparation of aqueous solutions of quaternary ammonium resins from di(tertiary amine) and 1,4-dihalobutene-2  
The reaction of a 1,4-dihalobutene-2 and a di(tertiary amine) in aqueous medium to form a quaternary ammonium resin. The reaction is carried out with an excess of 1,4-dihalobutene-2; unreacted...
3968067 Process for preparing high polymer latices from organic solvent dispersions  
This process relates to the preparation of stable aqueous latices from solvent dispersions of elastomers and other high polymer compositions. The process in common with that of earlier...
3925298 Method of making dry pigmented powder paint  
A method of making dry pigmented powder paint is disclosed wherein a liquid paint comprising a solvent portion which is immiscible with water, and a pigmented film forming portion, is finely...
3920601 Process for preparing aqueous emulsions of synthetic polymeric elastomer  
A process for preparing an aqueous emulsion of a synthetic polymeric elastomer from a solution thereof in a hydrocarbon solvent, which comprises mixing together a hydrocarbon solvent solution of a...
3892697 Preparation of crosslinked polymer latex from aqueous emulsion of solvent/polymer solution of precursor latex particle size  
The preparation of aqueous latices from solvent dispersions of elastomers and other high polymer compositions has presented problems including excessive viscosity during processing and foaming and...
3892703 Improved process for converting aqueous emulsion into aerosol of latex of polymer in aqueous/solvent vapor phase  
The preparation of aqueous latices from solvent dispersions of elastomers and other high polymer compositions has presented problems including excessive viscosity during processing and foaming and...

Matches 1 - 50 out of 76 1 2 >