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Class Information
Number: 528/480
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
Description: Processes under Class 520, ... wherein a solid polymer which has been derived from at least one ethylenic monomer, or a material which is in contact with the polymer, is treated.


Sub-classes under this class:

Class Number Class Name Patents
528/488 Contacting with alkali (li, na, k, rb, cs, fr) or alkaline earth (be, mg, ca, sr, ba) metal or compound thereof 340
528/485 Contacting with aluminum or heavy metal material 195
528/486 Contacting with carboxylic acid, salt, or anhydride thereof 478
528/483 Contacting with exteriorly produced specified gaseous agent other than drying, blanket, or carrier gas 312
528/482 Contacting with ion exchange material or solid sorbent 211
528/491 Contacting with organic material 597
528/490 Contacting with specified element or with specified inorganic compound other than water, elemental nitrogen, air and the inert gases (group viii a) 367
528/487 Contacting with sulfur or phosphorus-containing material 439
528/499 Contacting with water 600
528/502R Physical treatment 252
528/484 Preventing or removing reactor or processing equipment buildup 36
528/503 Temperature maintaining, heating or cooling 944
528/481 Treating at o deg c (32 deg f) or below, or at 200 deg c (392 deg f) or above 608
528/501 With distilling or pressured reduction step to remove material, e.g., flashing, autorefrigeration, etc. 517


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13

Patent Number Title Of Patent Date Issued
7358328 Method and device for increasing the intrinsic viscosity of polyester material by means of solid phase polymerisation Apr. 15, 2008
7354990 Purified polymeric materials and methods of purifying polymeric materials Apr. 8, 2008
7351772 Aliphatic polyester resin composition, preparation method thereof, and molded article and foamed article produced from the resin composition Apr. 1, 2008
7348395 Synthesis of oligomeric cyanate esters Mar. 25, 2008
7348398 Method for separating transition metals from polymers Mar. 25, 2008
7342087 Method for prevention of increase in particles in copolymer for semiconductor resist Mar. 11, 2008
7342085 Synthesis of oligomeric cyanate esters Mar. 11, 2008
7342086 Aliphatic polyester polyether copolymer, process for producing the same and aliphatic polyester composition using the copolymer Mar. 11, 2008
7332565 Method for the reduction of the residual monomer content in aqueous polymer dispersions Feb. 19, 2008
7329723 Thermal crystallization of polyester pellets in liquid Feb. 12, 2008
7326766 Method for production of high solids silicone resin coating solution Feb. 5, 2008
7323506 High performance P(VDF-TrFE) copolymer for pyroelectric conversion Jan. 29, 2008
7317071 Process for producing fluoromonomer Jan. 8, 2008
7314907 Purified polymeric materials and methods of purifying polymeric materials Jan. 1, 2008
7314908 Polythiophene processes Jan. 1, 2008
7301003 Method of preparing polymers having terminal amine groups Nov. 27, 2007
7300998 Polyester resin and catalyst for polyester production, process for producing polyester resin with the catalyst, polyester resin obtained with the catalyst, and hollow molded container comprisi Nov. 27, 2007
7297753 Reduction of permeation through a polymer Nov. 20, 2007
7297757 Resin surface treating agent and resin surface treatment Nov. 20, 2007
7297758 Method for extending shelf-life of constructs of semi-crystallizable polymers Nov. 20, 2007
7291692 Polyarylene oxide and method of producing the same Nov. 6, 2007
7291694 Method and device for producing crystallizable plastic material Nov. 6, 2007
7291695 Stable wet strength resin Nov. 6, 2007
7288620 Process and device for manufacturing an aromatic alkylene polymer Oct. 30, 2007
7285617 Oxygen tailoring of polyethylene blow molding resins Oct. 23, 2007
7279505 Radiation-curable prepolymers Oct. 9, 2007
7279524 Method for doping a polymer Oct. 9, 2007
7271237 Method of drying a material having a cohesive phase Sep. 18, 2007
7268206 Process and apparatus for degassing a polymer Sep. 11, 2007
7262245 Low-density sealing mass, ground mass and method for producing the same and the use thereof Aug. 28, 2007
7253253 Method of removing contaminants from plastic resins Aug. 7, 2007
7247350 Solvent-poor sol-gel-systems Jul. 24, 2007
7247699 Process for purification of crude polyether and adsorbent Jul. 24, 2007
7244806 Method and device for the continuous production of polyesters Jul. 17, 2007
7244812 Method for the production of aqueous polymer dispersions containing very few residual monomers and use thereof Jul. 17, 2007
7244813 Methods of purifying polymeric material Jul. 17, 2007
7244811 Method for the treatment of polyazole films Jul. 17, 2007
7241858 Reduction in polystyrene foams with dibasic esters Jul. 10, 2007
7232878 Polymer treatment for separating volatile material Jun. 19, 2007
7220819 Electroluminescent conjugated polymers containing phosphorescent moieties and the application thereof in LED May. 22, 2007
7220821 Process for the reduction of the residual monomer content of water-absorbent foam May. 22, 2007
7217783 Oxytetramethylene glycol copolymer and process for producing the same May. 15, 2007
7214759 Biologically absorbable coatings for implantable devices based on polyesters and methods for fabricating the same May. 8, 2007
7214764 Free radical quench process for irradiated ultrahigh molecular weight polyethylene May. 8, 2007
7208569 Reaction of fluoropolymer melts Apr. 24, 2007
7205045 Devices for calibrating optical scanners and methods of using the same Apr. 17, 2007
7201966 Packaging films containing coextruded polyester and nylon layers Apr. 10, 2007
7202328 Amorphous polymer article Apr. 10, 2007
7199163 Method for removing volatile components from polymer compositions Apr. 3, 2007
7193032 Controlling the crystallization of polyesters by means of their water content Mar. 20, 2007

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