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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 406
528/485 Contacting with aluminum or heavy metal material 226
528/486 Contacting with carboxylic acid, salt, or anhydride thereof 538
528/483 Contacting with exteriorly produced specified gaseous agent other than drying, blanket, or carrier gas 332
528/482 Contacting with ion exchange material or solid sorbent 258
528/491 Contacting with organic material 674
528/490 Contacting with specified element or with specified inorganic compound other than water, elemental nitrogen, air and the inert gases (group viii a) 394
528/487 Contacting with sulfur or phosphorus-containing material 474
528/499 Contacting with water 692
528/502R Physical treatment 394
528/484 Preventing or removing reactor or processing equipment buildup 47
528/503 Temperature maintaining, heating or cooling 1,107
528/481 Treating at o deg c (32 deg f) or below, or at 200 deg c (392 deg f) or above 690
528/501 With distilling or pressured reduction step to remove material, e.g., flashing, autorefrigeration, etc. 581


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18

Patent Number Title Of Patent Date Issued
8703879 Continuous method for multi-staged drying and subsequent condensation of a polyamide granulate Apr. 22, 2014
8680214 Terminal-modified difunctional sulfur-containing polymers, compositions thereof and methods of use Mar. 25, 2014
8680200 Polyglycerol aldehydes Mar. 25, 2014
8669344 Method of deashing from polymer solutions Mar. 11, 2014
8664284 Depolymerization of polymers Mar. 4, 2014
8663792 Composite roofing overlay containing paint waste Mar. 4, 2014
8658760 Formulations based on anionically stabilised, aqueous polymer dispersions Feb. 25, 2014
8658758 Process for producing aliphatic polyester reduced in residual cyclic ester content Feb. 25, 2014
8653150 Method for decomposing thermoset resin and recovering decomposition product Feb. 18, 2014
8633123 Catalysts and methods for polymer synthesis Jan. 21, 2014
8623955 Polyhedral-modified polymer Jan. 7, 2014
8618245 Preparation of PHA (polyhydroxyalkanoates) from a citric residue Dec. 31, 2013
8603577 Method for coating water-absorbing polymer particles Dec. 10, 2013
8603705 Polymer film-producing methods and devices produced therefrom Dec. 10, 2013
8604160 Composite roofing overlay containing recycled paint waste and recycled crushed glass Dec. 10, 2013
8598310 Interlock and process Dec. 3, 2013
8597582 Flashline heater system and method Dec. 3, 2013
8586643 Composition containing polyhydroxyalkanoate copolymer and polylactic acid used for preparing foaming material Nov. 19, 2013
8580914 Process for producing aliphatic polyester Nov. 12, 2013
8580917 Method of purifying block copolymers Nov. 12, 2013
8568705 Method for preparing branched functionalized polymers using branched polyol cores Oct. 29, 2013
8569441 Process for transforming the end groups of polymers Oct. 29, 2013
8563681 Process for producing fine polyphenylene sulfide resin particles, fine polyphenylene sulfide resin particles, and dispersion thereof Oct. 22, 2013
8557882 Method and device for the decontamination of plastic flakes Oct. 15, 2013
8546455 Expanded polystyrene solubilization method Oct. 1, 2013
8546522 Method for preparing fine spherical polycarbonate powders and method for preparing high molecular weight polycarbonate resin using same Oct. 1, 2013
8541540 Continuous process for the extraction of polyamide-6 Sep. 24, 2013
8541513 Terminal-modified difunctional sulfur-containing polymers, compositions thereof and methods of use Sep. 24, 2013
8541477 Methods of depolymerizing terephthalate polyesters Sep. 24, 2013
8530531 Method for the recycling of polyvinyl butyral Sep. 10, 2013
8530608 Water-based adhesive for lamination of polymers to metal substrates Sep. 10, 2013
8530618 Process for recovering a polymer from a solution Sep. 10, 2013
8524859 Method for elastomer finishing Sep. 3, 2013
8524789 Processing and use of waste latex materials Sep. 3, 2013
8519093 Process and a device for the continuous treatment of mixed substances Aug. 27, 2013
8519094 Polymer stream transfer Aug. 27, 2013
8513364 Production method of water-absorbent resin Aug. 20, 2013
8513378 Production method for water-absorbing resin powder Aug. 20, 2013
8492512 Process for reducing moisture in a biodegradable implant device Jul. 23, 2013
8487049 Recycling superabsorbent polymer fines Jul. 16, 2013
8486530 Method for reducing volatile organic compounds in composite resin particles, and composite resin particles Jul. 16, 2013
8481675 Chemical recycling of PLA by alcoholysis Jul. 9, 2013
8481607 Surface-treatment method for a fluororesin molded body, and fluororesin molded body Jul. 9, 2013
8470962 Method of thermoforming copolyesters Jun. 25, 2013
8470897 Devulcanization of rubber and other elastomers Jun. 25, 2013
8466257 Process and apparatus for purifying solid salt compositions Jun. 18, 2013
8445187 Hardmask composition having antireflective properties and method of patterning material on substrate using the same May. 21, 2013
8431677 Purification of a conventional polymer flow contaminated with PLA Apr. 30, 2013
8431683 Chemical recycling of PLA by hydrolysis Apr. 30, 2013
8426480 Plastic reclaimed from infectious medical waste and medical devices manufactured therefrom Apr. 23, 2013

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