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Class Information
Number: 521/44.5
Name: Synthetic resins or natural rubbers -- part of the class 520 series > Synthetic resins (class 520, subclass 1) > Process of treating scrap or waste product containing solid organic polymer to recover a solid polymer therefrom > Process of treating scrap or waste product containing at least one polymer derived from ethylenic unsaturated monomers only > Treating rubber (or rubberlike materials) or polymer derived from a monomer having at least two ethylenic unsaturated moieties > Treating with hydrocarbon or halogenated hydrocarbon material
Description: Subject matter wherein the process requires a hydrocarbon or a halogenated hydrocarbon.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8680166 Devulcanized rubber and methods Mar. 25, 2014
8664284 Depolymerization of polymers Mar. 4, 2014
8445553 Devulcanized rubber and methods May. 21, 2013
8378063 Process for producing fluoropolymer particles Feb. 19, 2013
8153699 Self-priming surfacing composition for finished surfaces Apr. 10, 2012
7935736 Method for recycling polyesters or polyester mixtures from polyester-containing waste May. 3, 2011
7893120 Method for reclaiming pulverized synthetic resin product Feb. 22, 2011
7767722 Devulcanized rubber and methods Aug. 3, 2010
7547734 Method for producing recycled resin, and resin material containing recycled resin produced by that method Jun. 16, 2009
7425584 Catalytic devulcanization of rubber Sep. 16, 2008
7342052 Process for regeneration of an elastomer from scrap Mar. 11, 2008
7241858 Reduction in polystyrene foams with dibasic esters Jul. 10, 2007
7189762 Method of modifying crosslinked rubber Mar. 13, 2007
7056956 Method for recycling a plastic material Jun. 6, 2006
6861568 Process for waste plastic recycling Mar. 1, 2005
6620363 Thermoset recycling methods and solid article produced Sep. 16, 2003
6555588 Method for the production of a polypropylene blend Apr. 29, 2003
6548559 Thermoplastic compositions and methods Apr. 15, 2003
6489372 Polycarbonate isolation through homogenization devolatization Dec. 3, 2002
6384093 Method of melt processing crosslinked thermoplastic material May. 7, 2002
6344493 Melt tension improver for polyolefin resins and process for producing the same Feb. 5, 2002
6335377 Reclaimed rubber and process for reclaiming vulcanized rubber Jan. 1, 2002
6306222 Process for cleaning plastics for recycling them Oct. 23, 2001
6160031 Process for decomposing a polymer to its monomer or monomers Dec. 12, 2000
6077874 Process for improving the properties of ground recycled rubber Jun. 20, 2000
5998490 Nonaqueous ozonation of vulcanized rubber Dec. 7, 1999
5959007 Bituminous compositions prepared with process treated vulcanized rubbers Sep. 28, 1999
5905095 Used tire process May. 18, 1999
5891926 Devulcanization of cured rubber Apr. 6, 1999
5883139 Process for improving the properties of ground recycled rubber Mar. 16, 1999
5811477 Method for preparing improved asphalt emulsion compositions Sep. 22, 1998
5731358 Process for the manufacture of high grade devulcanized rubbers from scrap and reject rubber items Mar. 24, 1998
5696173 Restructuring silicone rubber to produce fluid or grease Dec. 9, 1997
5618852 Used tire process Apr. 8, 1997
5616646 Restructuring silicone rubber to produce fluid or grease Apr. 1, 1997
5607981 Method of manufacture of paint and adhesive rubber from vulcanized rubber Mar. 4, 1997
5583168 One-stage abrasive absorption process for producing tire rubber modified asphalt cement systems and products thereof Dec. 10, 1996
5556888 Rubber compounds containing vulcanized scrap rubber, methods of manufacturing such rubber compounds Sep. 17, 1996
5539029 Asphalt emulsion-rubber paving composition Jul. 23, 1996
5523328 Process and apparatus for extruding mixtures of thermoplastic and thermoset materials and products made therefrom Jun. 4, 1996
5516809 Method for obtaining an elastomer product with high petroleum and its by-products absorption power May. 14, 1996
5418256 Method of reclaiming scrap vulcanized rubber using supercritical fluids May. 23, 1995
5397825 Rubber recycling process and product Mar. 14, 1995
5397818 Process for producing tire rubber modified asphalt cement systems and products thereof Mar. 14, 1995
5389691 Process for co-recycling tires and oils Feb. 14, 1995
5362759 Process for reclaiming elastomeric waste Nov. 8, 1994
5356939 Process for making rubber articles and rubber articles made thereby Oct. 18, 1994
5304576 Waste tire disposal and recycling Apr. 19, 1994
5258413 Continuous ultrasonic devulcanization of valcanized elastomers Nov. 2, 1993
5223543 Reduction in polystyrene with activated agent Jun. 29, 1993

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