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Class Information
Number: 528/488
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 alkali (li, na, k, rb, cs, fr) or alkaline earth (be, mg, ca, sr, ba) metal or compound thereof
Description: Processes wherein the polymer or polymer-containing material is contacted with a treating material which contains at least one atom of an alkali metal or alkaline earth element.










Sub-classes under this class:

Class Number Class Name Patents
528/489 Oxide or hydroxide 277


Patents under this class:
1 2 3 4 5 6 7 8 9

Patent Number Title Of Patent Date Issued
8691936 Initiator Apr. 8, 2014
8686104 Ladder polymers with instrinsic microporosity and process for production thereof Apr. 1, 2014
8680230 Production process of poly(arylene sulfide) whose content of terminal halogen group has been reduced Mar. 25, 2014
8680200 Polyglycerol aldehydes Mar. 25, 2014
8653150 Method for decomposing thermoset resin and recovering decomposition product Feb. 18, 2014
8653229 Polymerisation of hexafluoropropylene oxide Feb. 18, 2014
8653232 Manufacturing method of polyethylene terephthalate Feb. 18, 2014
8642722 Preparation method of polybenzimidazole Feb. 4, 2014
8623981 Nitrile rubbers which optionally contain alkylthio terminal groups and which are optionally hydrogenated Jan. 7, 2014
8618246 Manufacturing method of polyethylene terephthalate Dec. 31, 2013
8569444 Polyalkylene glycol derivative and process for producing same Oct. 29, 2013
8557929 Method for producing biodegradable polyoxyalkylene derivative Oct. 15, 2013
8546518 Polyarylene sulfide and method for producing the same Oct. 1, 2013
8546520 Method for treatment of natural rubber products Oct. 1, 2013
8530531 Method for the recycling of polyvinyl butyral Sep. 10, 2013
8530554 Precursors for the polymer-assisted deposition of films Sep. 10, 2013
8507644 Method of making a metal terephthalate polymer Aug. 13, 2013
8501904 Method for producing polyols Aug. 6, 2013
8492513 Method for enhancing water content of silicone hydrogel contact lens Jul. 23, 2013
8487049 Recycling superabsorbent polymer fines Jul. 16, 2013
8445629 Method for producing polyarylene sulfide May. 21, 2013
8445631 Metal-neutralized sulfonated block copolymers, process for making them and their use May. 21, 2013
8436058 Methods for separation and conditioning of products containing super absorbent polymers May. 7, 2013
8426552 Method for producing acid group-containing polyarylene sulfide Apr. 23, 2013
8404754 Recycling Mar. 26, 2013
8399608 Process for the preparation of polyether alcohols from unsaturated starters having active hydrogen atoms Mar. 19, 2013
8349974 Biaxially oriented polyarylene sulfide film and method for producing the same Jan. 8, 2013
8344094 Optical material and optical element Jan. 1, 2013
8329832 Process for producing cyclic polyarylene sulfide Dec. 11, 2012
8318895 Recycling superabsorbent polymer fines Nov. 27, 2012
8309682 Recycling superabsorbent polymer fines Nov. 13, 2012
8304464 Polyester with caustic material mixing methods and mixing reactors Nov. 6, 2012
8263734 System and method for reducing off-gassing of polyphenylene sulfide Sep. 11, 2012
8247523 Methods for producing and purifying 2-aryl-3,3-bis(4-hydroxyaryl)phthalimidine compounds, the purified monomers, and polymers derived therefrom Aug. 21, 2012
8202965 Fusion free hydrolysis of polyphosphoric acid in spun multifilament yarns Jun. 19, 2012
8202964 Initiator Jun. 19, 2012
8183336 Poly (arylene sulfide) May. 22, 2012
8138233 Process for making polybutylene terephthalate (PBT) from polyethylene terephthalate (PET) Mar. 20, 2012
8129498 Polymeric medium Mar. 6, 2012
8088834 Process for making polybutylene terephthalate (PBT) from polyethylene terephthalate (PET) Jan. 3, 2012
8063174 Polybenzimidazole compounds Nov. 22, 2011
8053550 Process for the purification from heavy metals of vinyl chloride polymers Nov. 8, 2011
8053607 Method for producing polyether-polyol having narrow molecular weight distribution Nov. 8, 2011
8013109 Industrially viable method for the production of polycarbynes, polymeric precursors to diamond and diamond like ceramics Sep. 6, 2011
7956118 Method and preparation of chemically prepared toners Jun. 7, 2011
7947801 Polyfluorene method May. 24, 2011
7923518 Nitrile rubbers Apr. 12, 2011
7910688 Recycling superabsorbent polymer fines Mar. 22, 2011
7902263 Process for making polybutylene terephthalate (PBT) from polyethylene terephthalate (PET) Mar. 8, 2011
7902324 Initiator Mar. 8, 2011

1 2 3 4 5 6 7 8 9










 
 
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