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Class Information
Number: 521/43.5
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 organic chalcogen-containing material > Containing carboxylic acid or anhydride group
Description: Subject matter wherein the organic chalcogen material is a carboxylic acid or the anhydride thereof.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6815510 |
Elastomer reclaiming composition and method |
Nov. 9, 2004 |
| 6797757 |
Article, including tires, having component or rubber composition which contains particles of pre-vulcanized rubber and blend of tetrathiodipropionic and trithiodipropionic acids |
Sep. 28, 2004 |
| 6555588 |
Method for the production of a polypropylene blend |
Apr. 29, 2003 |
| 6541526 |
Method and composition for devulcanization of waste rubber |
Apr. 1, 2003 |
| 6387966 |
Method and composition for devulcanization of waste rubber |
May. 14, 2002 |
| 6346561 |
Pavement material |
Feb. 12, 2002 |
| 6310126 |
Mixer and process for use |
Oct. 30, 2001 |
| 6160031 |
Process for decomposing a polymer to its monomer or monomers |
Dec. 12, 2000 |
| 6114401 |
Plastic reclamation process |
Sep. 5, 2000 |
| 5910514 |
Synthetic mulch |
Jun. 8, 1999 |
| 5905095 |
Used tire process |
May. 18, 1999 |
| 5883139 |
Process for improving the properties of ground recycled rubber |
Mar. 16, 1999 |
| 5717050 |
Hypoallergenic natural rubber products from parthenium argentatum (gray) and other non-hevea brasiliensis species |
Feb. 10, 1998 |
| 5653867 |
Method for the separation of high impact polystyrene (HIPS) and acrylonitrile butadiene styrene (ABS) plastics |
Aug. 5, 1997 |
| 5651994 |
Elastic paving material |
Jul. 29, 1997 |
| 5639801 |
Processing of anhydride-containing thermoplastic resins |
Jun. 17, 1997 |
| 5618852 |
Used tire process |
Apr. 8, 1997 |
| 5604277 |
Rubber and plastic bonding |
Feb. 18, 1997 |
| 5580942 |
Hypoallergenic natural rubber products from parthenum argentatum (gray) and other non-hevea brasiliensis species |
Dec. 3, 1996 |
| 5556888 |
Rubber compounds containing vulcanized scrap rubber, methods of manufacturing such rubber compounds |
Sep. 17, 1996 |
| 5504122 |
Recovery of dimethyl terephthalate from polymer mixtures |
Apr. 2, 1996 |
| 5464877 |
Method for recovering a synthetic waste material contaminated with other materials |
Nov. 7, 1995 |
| 5420166 |
Glycolysis of cured unsaturated polyesters for producing a recycle reactant |
May. 30, 1995 |
| 5397825 |
Rubber recycling process and product |
Mar. 14, 1995 |
| 5356939 |
Process for making rubber articles and rubber articles made thereby |
Oct. 18, 1994 |
| 5336755 |
Process for the recovery of polymers dissolved in aqueous alkaline or acid media |
Aug. 9, 1994 |
| 5317043 |
Process for the recovery of polymers dissolvable in aqueous alkaline or acid media |
May. 31, 1994 |
| 5120768 |
Process for separating polyethylene terephthalate from polyvinyl chloride |
Jun. 9, 1992 |
| 5030662 |
Construction material obtained from recycled polyolefins containing other polymers |
Jul. 9, 1991 |
| 4244841 |
Method for recycling rubber and recycled rubber product |
Jan. 13, 1981 |
| 4097644 |
Inorganic raw felt intended for the production of roof felt |
Jun. 27, 1978 |
| 4046834 |
Treatment of vulcanized rubber |
Sep. 6, 1977 |
| 4018730 |
Method for emulsifying asphalt-rubber paving material and a stable thixotropic emulsion of said material |
Apr. 19, 1977 |
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