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Class Information
Number: 528/482
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 ion exchange material or solid sorbent
Description: Processes wherein a solid sorbent mass is used to retain on its surface a constituent of a mixture, or wherein an ion-exchange material is used to contact the polymer or polymer-containing material.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 5300628 |
Selected chelate resins and their use to remove multivalent metal impurities from resist components |
Apr. 5, 1994 |
| 5288849 |
Alumina-based adsorbents for the purification of polyolefins |
Feb. 22, 1994 |
| 5288850 |
Process for removing metals from vinylphenol polymers |
Feb. 22, 1994 |
| 5286844 |
Method of purifying polyacrylonitrile |
Feb. 15, 1994 |
| 5286843 |
Process for improving water-whitening resistance of pressure sensitive adhesives |
Feb. 15, 1994 |
| 5284930 |
Process for purifying vinylphenol polymers for use as photoresist materials |
Feb. 8, 1994 |
| 5272235 |
Cycloolefin random copolymer and process for preparing same |
Dec. 21, 1993 |
| 5231164 |
Removal of catalyst residue from polyketone solution with silica gel or metal oxide containing water or hydroxyl functionality |
Jul. 27, 1993 |
| 5225524 |
Process for rendering amino-group-containing polymer solutions substantially odorless |
Jul. 6, 1993 |
| 5220100 |
Method of removing lithium compounds from a polymer |
Jun. 15, 1993 |
| 5212285 |
Removal of hydrogenation catalyst from polymer solutions by catalyzed precipitation |
May. 18, 1993 |
| 5173548 |
Epoxy-modified hydrocarbon resins |
Dec. 22, 1992 |
| 5171767 |
Utrafiltration process for the recovery of polymeric latices from whitewater |
Dec. 15, 1992 |
| 5137943 |
Removal of residual acid from chlorinated polymers |
Aug. 11, 1992 |
| 5133868 |
Identification of sulfonation by-products by ion chromatography |
Jul. 28, 1992 |
| 5118787 |
Modification method of synthetic resins and modified synthetic resins |
Jun. 2, 1992 |
| 5080997 |
Process for preparing a positive resist composition by mixing the condensation product of a quinone diazide sulfonyl halogenide and a phenol with a resin solution without isolating the condens |
Jan. 14, 1992 |
| 5043420 |
Process for deodorizing isobutylene polymer |
Aug. 27, 1991 |
| 5030713 |
Process for fractionating polymers |
Jul. 9, 1991 |
| 4985540 |
Process for removing rhodium-containing catalyst residue from hydrogenated nitrile rubber |
Jan. 15, 1991 |
| 4935475 |
Process for producing cycloolefin random copolymer |
Jun. 19, 1990 |
| 4923961 |
Process for deodorizing isobutylene polymer |
May. 8, 1990 |
| 4910295 |
Process for reducing the odor of ethylidene norbornene present in EPDM resin |
Mar. 20, 1990 |
| 4864012 |
Process for the removal of a solute from a solution |
Sep. 5, 1989 |
| 4795802 |
Removal of vinylpyrrolidone from vinylpyrrolidone polymers |
Jan. 3, 1989 |
| 4720540 |
Process for treating thermoplastic polymers |
Jan. 19, 1988 |
| 4716184 |
Epoxy resin encapsulating composition with enhanced moisture resistance and method for producing the same |
Dec. 29, 1987 |
| 4693800 |
Property variation of dispersion resins by electrofiltration |
Sep. 15, 1987 |
| 4636540 |
Purification of polymer solutions |
Jan. 13, 1987 |
| 4532317 |
Aromatic polyamines containing primary aromatic amino groups, urethane groups and polyester groups, and a process for the production thereof |
Jul. 30, 1985 |
| 4532266 |
Polymer-containing polyether polyamines and a process for the production of these polyamines |
Jul. 30, 1985 |
| 4528364 |
Removal of alkaline catalysts from polyether polyols and polyalkylene carbonate polyols |
Jul. 9, 1985 |
| 4510293 |
Process for hydrogenating conjugated diene polymers |
Apr. 9, 1985 |
| 4506037 |
Production of resin foam by aqueous medium |
Mar. 19, 1985 |
| 4477656 |
Method for removing sodium salts from polyphosphazene polymer solutions |
Oct. 16, 1984 |
| 4460764 |
Removal of the catalyst from polyphenylene ethers |
Jul. 17, 1984 |
| 4369266 |
Concentrated dispersions of fluorinated polymers and process for their preparation |
Jan. 18, 1983 |
| 4339373 |
Granulation and drying aids for polymeric gels |
Jul. 13, 1982 |
| 4312895 |
Method for preparing water-soluble lacquer |
Jan. 26, 1982 |
| 4279791 |
Recovery of cerium from polymer dispersions |
Jul. 21, 1981 |
| 4272421 |
Method for preparing water-soluble lacquer |
Jun. 9, 1981 |
| 4250270 |
Solution polymerization with molecular sieve purification of recycled solvent |
Feb. 10, 1981 |
| 4225702 |
Method of preparing polyamide acid type intermediates for processing of semiconductors |
Sep. 30, 1980 |
| 4206093 |
Process for the preparation of chlorinated polymers |
Jun. 3, 1980 |
| 4202964 |
Method for reducing oligomeric cyclic ether content of a polymerizate |
May. 13, 1980 |
| 4192942 |
Emulsifiable ethylene/carbon monoxide copolymer waxes |
Mar. 11, 1980 |
| 4192943 |
Method for reducing oligomeric cyclic ether content of a polymerizate |
Mar. 11, 1980 |
| 4177343 |
Purification of polymer solution |
Dec. 4, 1979 |
| 4168371 |
Process for making lignin gels in bead form |
Sep. 18, 1979 |
| 4150218 |
Separation of copper ions from mixtures that include copper and an amine |
Apr. 17, 1979 |
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