| Patents for C08J 11 - Recovery or working-up of waste materials (9,055) |
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| 04/23/1991 | US5009789 Filtration and reuse of urea-formaldehyde, melamine-formalde-hyde and polyamidoamine-epichlorohydrin resins |
| 04/18/1991 | DE3933811A1 Environmentally friendly recovery of CFC gas from refrigerator foam - in which foam and plastic inner skin are granulated, compressed and gas is extracted and fluidised |
| 04/17/1991 | EP0422460A2 Method for separating and recovering layered plastics joined at an interface |
| 04/17/1991 | EP0422282A1 Process for the continuous production of high molecular weight polyester resin |
| 04/16/1991 | US5008366 Process for producing adhesives from polyethylene terephthalate |
| 04/14/1991 | WO1991005815A1 Process for the continuous production of high molecular weight polyester resin |
| 04/14/1991 | CA2026285A1 Method for separating and recovering layered plastics joined at an interface |
| 03/28/1991 | DE3931204A1 Reuse of paint residue by rendering toxic particles inert - in which paint slurry is dewatered to leave crosslinkable resin to coat toxic particles and mixed with thermoplastic |
| 03/21/1991 | WO1991003515A1 Polymer recycling by selective dissolution |
| 03/20/1991 | EP0417761A2 Process and apparatus for recycling aqueous fluid absorbents fines |
| 03/20/1991 | CN1012067B Desulfurizing processing and its equipment of scraped synthetic rubber |
| 03/16/1991 | CA2025420A1 Process and apparatus for recycling aqueous fluid absorbents fines |
| 03/05/1991 | US4997609 Polymer bonding grains of sand to form useful objects |
| 02/26/1991 | US4995982 From deleterious by-products, phase separation with methanol, ethanol, acetone, or dipropylene glycol monomethyl ether |
| 02/22/1991 | WO1991002638A1 A method for removing, condensing and collecting propellants from foam materials and other materials for which the method is suitable in an environmentally friendly manner |
| 02/22/1991 | CA2064909A1 Method for removing, condensing and collecting propellants from foam materials and other materials for which the method is suitable in an environmentally friendly manner |
| 02/21/1991 | DE3926960A1 Economic sepn. of oil and plastics - comprising combining oil with solvent and sepn. of solid and liq. |
| 02/20/1991 | CN1011701B Method for producing composite material of plastic and rubber |
| 02/06/1991 | CN1049018A Technology for obtaining peat plastics from waste polythene |
| 02/06/1991 | CN1011509B Method for making plastics from gangue and rubber waste |
| 02/05/1991 | CA1279947C Polymeric materials having controlled physical properties and processes for obtaining these |
| 01/16/1991 | EP0407925A2 Recycling synthetic resin composition |
| 01/09/1991 | EP0406671A2 Water-soluble or water-dispersible polyester sizing compositions |
| 01/09/1991 | CN1048394A Process for regeneration of polytetrafluoroethylene |
| 01/08/1991 | CA1278668C Recovery of polyester from scrap by high shear conditions |
| 01/03/1991 | DE3919995A1 Recycling scrap plastics into sheeting - by mixing primarily ground thermoplastic waste with universal chemical modifier and glass fabric before processing into continuous sheet |
| 01/01/1991 | US4981876 Method for separating and recovering layered plastics joined at an interface |
| 12/25/1990 | US4980031 Solvent recovery |
| 12/25/1990 | US4980030 Heating to volatilize solvent and cure paint resin; collecting solids; removal |
| 12/19/1990 | CN1047872A Method for regenerating waste vulcanized rubber |
| 12/12/1990 | EP0402294A1 Recycling process of paint removal waste and final product |
| 12/11/1990 | US4977191 Water-soluble or water-dispersible polyester sizing compositions |
| 12/11/1990 | US4976862 Process for extraction and recovery of blowing agents from polymeric foams |
| 12/05/1990 | CN1047512A Wooden scraps, red mud modified plastics |
| 12/02/1990 | CA2017992A1 Cooling of porous materials |
| 12/02/1990 | CA2017991A1 Controlled cooling of porous materials |
| 11/13/1990 | US4970267 Reconstitution of superabsorbent polymer fines using persulfate salts |
| 10/31/1990 | EP0395128A1 A process for manufacturing a composite material comprising thermoplastic polymers and residuals from the manufacture of plastic laminates, and the composite material so obtained |
| 10/24/1990 | EP0393933A2 Paint detackification using an improved oil-in-water emulsion with dibasic esters |
| 10/24/1990 | EP0393916A1 Method for the production of amidase enzyme |
| 10/24/1990 | EP0393030A1 Destruction of plastics waste. |
| 10/24/1990 | CN1046341A Process for extraction and recovery of blowing agents from polymeric foams |
| 10/18/1990 | DE3912126A1 Plastic lining stripping - from steel strip end by heating in cyclic hydrocarbon solvent, quenching and brushing |
| 10/17/1990 | EP0392760A2 Process for extraction and recovery of blowing agents from polymeric foams |
| 10/17/1990 | CA2007222A1 Paint detackification using an improved oil-in-water emulsion with dibasic ester |
| 10/10/1990 | CA2013007A1 Process for extraction of blowing agents from polymeric foams |
| 10/03/1990 | EP0390464A2 Mist elimination in paint spraying |
| 10/03/1990 | CN1045805A Method for making paint from waste plastics and polyester fiber |
| 10/03/1990 | CN1045800A Method for recovering polyimide film waste |
| 10/02/1990 | US4960864 Washing in the presence of a tricarboxylic acid |
| 09/27/1990 | DE3936974C1 Treatment of paint coagulate - comprises mixing fibres with coagulate, forming layer and heat treating |
| 09/20/1990 | WO1990010667A1 Composition of recycled polyethylene terephthalate and method of making rigid foamed articles from it |
| 09/19/1990 | EP0388197A1 Production of terephthalate esters by degradative transesterification of scrap or virgin terephthalate polyesters |
| 08/22/1990 | EP0383227A1 Process for binding particulate waste such as dusts, metal waste, fibres, paper waste or the like |
| 08/21/1990 | US4950692 Method for reconstituting superabsorbent polymer fines |
| 08/14/1990 | WO1990009424A1 Process for binding particulate waste, such as dust, metal scrap, fibres, paper waste or the like, to solids |
| 08/14/1990 | CA2045407A1 Process for binding particulate waste, such as dust, metal scrap, fibres, paper waste or the like, to solids |
| 08/09/1990 | WO1990008789A1 Aggregates or clusters of water-swellable polymers having increased hydration rate over unassociated water-swellable polymers |
| 08/08/1990 | CN1044472A Aggregates of water-swellable polymers and a method for producing same |
| 07/24/1990 | CA2008323A1 Aggregates of water-swellable polymers and a method for producing them, aggregates having increased hydration rate over unassociated water-swellable polymers |
| 07/11/1990 | CN1043725A Process for treating waste excess rubber fibre and its usage |
| 07/10/1990 | US4940833 Olefin monomer separation process |
| 07/04/1990 | EP0376119A2 A method for recycling PET beverage bottles |
| 07/04/1990 | EP0376020A2 Process for preparing a powder from coating residues |
| 06/27/1990 | CN1043323A Continuous catalytic cracking method for reclaiming waste foam polystyrene |
| 06/06/1990 | EP0371479A2 Olefin monomer separation process |
| 06/06/1990 | CN1042720A Production method of acrylonitrile-butadiene-styrene copolymerized resin by waste plastics recovery |
| 05/30/1990 | EP0370786A2 Polypropylene resin composition |
| 05/30/1990 | EP0370242A2 Useful articles from mixed scrap plastics and a method of making same |
| 05/29/1990 | US4929749 Production of terephthalate esters by degradative transesterification of scrap or virgin terephthalate polyesters |
| 05/23/1990 | CN1042374A Method for making combustibles from waste plastics |
| 05/22/1990 | CA2003390A1 Polypropylene resin composition |
| 05/03/1990 | DE3837125A1 Process for the production of mouldings from metal and a thermoplastic |
| 05/01/1990 | US4921924 Isoprene recovery in the butyl rubber process |
| 04/25/1990 | CN1041607A Waste plastic lacquer and its prodection method |
| 04/24/1990 | US4919691 Paint detackification using an improved oil-in-water emulsion with dibasic ester |
| 04/19/1990 | DE3835013A1 COOH-containing polymer, mixture of COOH-containing polymers with fillers, and use for the production of mouldings |
| 03/21/1990 | CN1007254B Recovery isoprene in preparing butyl rubber |
| 03/15/1990 | DE3829920A1 Process for recovering carbon disulphide from spinning baths |
| 03/13/1990 | US4908265 Articles of manufacture and their production |
| 03/08/1990 | DE3929584A1 Delamination of laminated punching plates - immersion in incompressible fluid and application of ultrasonic waves ensures free sepn. of steel plates from laminated facings |
| 03/06/1990 | CA1266361A1 Method of manufacturing partially crystalline polyester articles |
| 02/28/1990 | EP0355319A2 Process for recovering a dihydric phenol from a scrap polyester |
| 01/23/1990 | US4895899 Impact resistant polyethylene terephthalate/polycarbonate/polyethylene graft copolymer blends |
| 01/09/1990 | US4892931 Purification of polycarbonate with extractant/swelling agent and elevated pressure and temperature |
| 01/03/1990 | EP0348555A2 Method of recovering pigments and binders from coagulated paint |
| 01/03/1990 | EP0348554A2 Method of recovering pigments, binders and solvents from rinsing agents contaminated with paint |
| 12/27/1989 | EP0347888A2 Silicone oil recovery |
| 12/21/1989 | DE3820597A1 Polyol component and a mixture based thereon for producing polyisocyanurate and polyurethane foams |
| 12/06/1989 | EP0344946A2 Method and apparatus for treating waste paint sludge |
| 12/06/1989 | EP0344681A2 Process for treating thermoplasts or non-thermoplastic polymers and those containing amide and/or urethane groups |
| 12/05/1989 | US4885407 Method for recovering a dihydric phenol from a scrap polyester |
| 10/31/1989 | US4877821 Carrier resin and low viscosity stabilizer; for vinylidene chloride polymers |
| 10/31/1989 | US4877682 Laminates containing coextruded scrap |
| 10/19/1989 | WO1989009663A1 Arrangement for eliminating foaming and/or cooling agents |
| 10/17/1989 | US4874452 Subjecting cured polyimide foam to pressurized steam |
| 10/11/1989 | EP0336254A1 Installation for recovering blowing and/or refrigerating agents |
| 10/04/1989 | CN1036017A Method for producing oxygenated chlorinated polyolefine from waste plastics |
| 10/03/1989 | US4871809 Railroad flangeway filler and expansion joint sealer |
| 09/26/1989 | US4870110 Reuse for paint cans |