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Class Information
Number: 528/500
Name: Synthetic resins or natural rubbers -- part of the class 520 series > Synthetic resins (class 520, subclass 1) > Treating polymer containing material or treating a solid polymer or a resinifiable intermediate condensation product > Contacting with water > Steam stripping or steam distilling
Description: Process wherein the polymer or the polymer-containing material is separated by vaporizing and condensing at least a portion of the material, so as to isolate in the condensed liquid or in the unvaporized portion a comparatively pure compound, which compound was present in the original mixture and wherein the separation is effect by contacting the material to be separated with steam so as to reduce the partial vapor pressure of the component of the material desired to be recovered.

Patents under this class:
1 2 3 4 5 6

Patent Number Title Of Patent Date Issued
8691937 Method for the preparation of low odor copolymer latexes Apr. 8, 2014
8557949 Process for production of di- and polyamines of the diphenylmethane series Oct. 15, 2013
8530618 Process for recovering a polymer from a solution Sep. 10, 2013
8507643 Composition comprising glycerol, process for obtaining same and use thereof in the manufacture of dichloropropanol Aug. 13, 2013
8497326 Antistatic ionomer composition and articles therewith Jul. 30, 2013
8481675 Chemical recycling of PLA by alcoholysis Jul. 9, 2013
8431677 Purification of a conventional polymer flow contaminated with PLA Apr. 30, 2013
8420702 Process for recycling articles based on a fiber reinforced polymer Apr. 16, 2013
8344099 Steaming of a polyolefin Jan. 1, 2013
8338563 Method for purifying a plastic solution Dec. 25, 2012
8334362 Method and apparatus for determining melt elasticity Dec. 18, 2012
8252892 Process for obtaining an elastomer in solid phase starting from its polymer solution Aug. 28, 2012
8207291 Process for devolatilization of polymer of an aromatic alkylene Jun. 26, 2012
8143371 Preparation of polytrimethylene ether glycol or copolymers thereof Mar. 27, 2012
8058389 Process for recovering brominated butadiene polymers from solution Nov. 15, 2011
8053550 Process for the purification from heavy metals of vinyl chloride polymers Nov. 8, 2011
7985778 Method for decomposing and reclaiming synthetic resin having ester bond in the composition structure Jul. 26, 2011
7977453 Processes for hydrolyzing polyphosphoric acid in shaped articles Jul. 12, 2011
7943676 Method of recycling waste plastic foam materials May. 17, 2011
7893195 Method for recovering a polymer from a liquid medium Feb. 22, 2011
7846986 Method for obtaining a polymer in a solution Dec. 7, 2010
7812061 Process for the production of recycled polycarbonate as raw material for flame-retardant resin compositions and polycarbonate-base flame-retardant resin compositions Oct. 12, 2010
7803253 Method for dehydrating water-containing substance using liquefied matter Sep. 28, 2010
7790777 Method for recovering a polymer in solution Sep. 7, 2010
7790804 Process for stripping polymer polyols Sep. 7, 2010
7786254 Process for the polyolefin finishing Aug. 31, 2010
7745568 Transfer vessel between flash tank and purge column Jun. 29, 2010
7745567 Process for stripping polymer dispersions Jun. 29, 2010
7736525 Method of making an alkoxylated polyethylenimine product Jun. 15, 2010
7723466 Aromatic-acrylate tackifier resins May. 25, 2010
7579385 Dried porous crumbs of hydrogenated block copolymer Aug. 25, 2009
7541427 Method for desolvation of polymer solution Jun. 2, 2009
7517946 Production process of poly(arylene sulfide) Apr. 14, 2009
7393915 Method for producing polyorganosiloxane-containing resin Jul. 1, 2008
7364668 Process for producing an amino composition Apr. 29, 2008
7345132 Method of producing novolak resin Mar. 18, 2008
7314909 Method of reducing the styrene content of a poly(arylene ether)/polystyrene blend, and articles comprising the resulting thermoplastic resin Jan. 1, 2008
7304124 Process for stripping volatile substances from dispersion comprising polymer particles and process for producing toner Dec. 4, 2007
7279244 Fuel cell, polyelectrolyte and ion-exchange resin use for same Oct. 9, 2007
7259231 Extraction and fractionation of biopolymers and resins from plant materials Aug. 21, 2007
7238773 Countercurrent stripping pipe Jul. 3, 2007
7226989 Method of separating a polymer from a solvent Jun. 5, 2007
7135546 Method for recycling vinyl polymer-based articles Nov. 14, 2006
7124768 Method for transferring aqueous polymer dispersions from one container to another container Oct. 24, 2006
7122619 Method of separating a polymer from a solvent Oct. 17, 2006
7119157 Methods of preparing EP(D)M elastomer, of controlling yield thereof, and of recovering the same Oct. 10, 2006
7038008 Method for the processing of a liquid reaction discharge of the cationic polymerization of isobutene May. 2, 2006
7022743 Fuel cell, polyelectrolyte and ion-exchange resin used for same Apr. 4, 2006
6984706 Diene rubber, process for production thereof, rubber compositions, process for producing the same, and crosslinked rubbers Jan. 10, 2006
6982026 Azeotropic distillation process for producing organic acids or organic acid amides Jan. 3, 2006

1 2 3 4 5 6

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