Patents for C08F 6 - Post-polymerisation treatments (8,582)
07/1992
07/26/1992WO1992012704A1 Method for masking the taste of a medicament
07/26/1992CA2077658A1 Method for masking the taste of a medicament
07/22/1992EP0495628A1 Drying temperature independent polytetrafluoroethylene
07/22/1992CN1062909A Removal method of catalyst residure after hydrogenation treatment of polymer solution
07/19/1992CA2059593A1 Drying temperature independent polytetrafluoroethylene
07/15/1992EP0494543A1 Polyglutarimides with improved properties
07/14/1992CA1305098C Process for preparation of water absorptive composite material
07/09/1992CA2058572A1 Polyglutarimides with improved properties
07/07/1992US5128446 With ethylene
07/01/1992EP0492378A2 Aqueous polymerdispersions with reduced amount of formaldehyde
06/1992
06/30/1992US5126409 Polyglutarimides with improved properties
06/30/1992CA1304399C Process for the purification and the isolation of isocyanate condensates by liquid or supercritical co _extraction
06/25/1992WO1992010535A1 Method of regeneration of a hydrocarbon based liquid that contains titanium and/or chlorine compounds
06/25/1992WO1992010446A1 Method for converting ethylene into light alpha olefines
06/25/1992WO1992004423A3 Monomeric recovery from polymeric materials
06/23/1992CA1304181C Process for producing a low dust transparent thermoplastic resinsolution
06/21/1992CA2058230A1 Aqueous dispersions of plastics having a reduced formaldehyde content
06/17/1992EP0490672A2 Method of removing catalyst from ethylene-alpha-olefin copolymer
06/16/1992US5122592 Shearing at elevated temperatures; high-melting crystals
06/16/1992US5122582 Reacting vinylpyrrolidone and vinyl ester in organic solvent in presence of radical initiator, distilling, adding water and more initiator, steam distilling to remove volatiles
06/16/1992CA1303438C Multi-stage opacifying polymer particles containing non-polymeric acid absorbed therein
06/15/1992CA2057526A1 Method for purifying ethylene-.alpha.-olefin copolymer
06/10/1992EP0489574A2 A process for the supercritical mixed-solvent separation of polymer mixtures
06/07/1992CA2054909A1 Supercritical mixed-solvent separation of polymer mixtures
06/03/1992EP0488605A2 Low-formaldehyde self-crosslinking polymer latex composition
06/02/1992US5118787 Ion exchanging; heating, decompression, evaproation condensation, refluxing and purification
06/02/1992US5118388 Reduction of content of monomers, oligomers, and diluents
05/1992
05/28/1992CA2055937A1 Low-formaldehyde, self-crosslinking polymer latex composition
05/26/1992US5116940 Sweep gas
05/20/1992EP0486301A2 A process of forming a copolymer
05/20/1992EP0485893A1 Bulk polymerisation with metallocene catalyst for the preparation of cycloolefin polymers
05/20/1992EP0485891A2 Process for the reduction of discoloration of a polymeric moulding composition at processing temperature
05/19/1992US5115026 Dispersion of particles in a matrix
05/19/1992CA1301200C Isoprene recovery in the butyl rubber process
05/16/1992CA2055528A1 Process for reducing the discoloration of a plastic molding composition at the processing temperature
05/06/1992EP0481004A4 Densified polyethersulfone
05/05/1992USH1055 Thermal energy coagulation and washing of latex particles
05/05/1992US5110358 Compatibility agent for aqueous polypigmentary suspensions containing hydrated calcium sulfate
05/05/1992CA1300311C Method for treating resin in a purge vessel
04/1992
04/28/1992US5109090 Compatibility agent for aqueous polypigmentary suspensions containing hydrated calcium sulfate
04/28/1992US5109056 Used for food packaging; reduced level of odor
04/28/1992US5108711 Multi-shaft thin-layer reactor
04/28/1992CA1299792C Polymer non-aqueous dispersion, process for preparing the same and coating composition formulated therewith
04/23/1992DE4033376A1 Processing HDPE powder for extrusion blow-moulding - by processing at 210-290 deg. C with specified mechanical energy input divided between crystalline-molten transition and molten states
04/23/1992DE4032096A1 Emulsifier-free emulsion polymers for pharmaceuticapreparations
04/22/1992EP0481004A1 Densified polyethersulfone.
04/21/1992CA1299299C Semiconductor device including alternating ordered layers
04/16/1992DE4032598A1 Rubbers sepn. from solns. - by flowing soln. on heated surfaces and rollers in vacuum chamber, picking film off with doctor blades, compressing and discharging
04/15/1992EP0480391A2 Emulsion-free emulsion polymers in sustained-release pharmaceutical compositions and their production
04/14/1992US5104972 Removal of hydrogenation catalyst from polymer solutions by contact with silicates
04/11/1992CA2053005A1 Emulsifier-free emulsion polymers
04/08/1992EP0479754A1 Process for the decolouration of resinous polymers of the vinyl aromatic/conjugated diene type
04/07/1992US5102940 Stabilization of methacrylic polymers against sterilizing radiation
04/02/1992WO1992005205A1 Polymerisation processes
03/1992
03/31/1992CA1298152C Preparation of virtually uncrosslinked polyacetylenes in film form
03/24/1992US5098994 Heat exchanging, reversing the flow and recovering the solvent
03/24/1992US5098993 Extraction of alkali metal with water
03/19/1992WO1992004423A2 Monomeric recovery from polymeric materials
03/17/1992US5096538 Vacuum drying method
03/17/1992CA1297619C Polymer recovery from solution
03/12/1992DE4127814A1 Prepn. of water absorbing resin with low content of residual monomer - by polymerising water soluble monomer with polysaccharide or crosslinker, drying, grinding and treating with reducing agent
03/12/1992DE4123889A1 Water-absorbing resin prepn. - by irradiating polymer of water-soluble monomer and polysaccharide and/or crosslinking agent with UV in presence of radical scavenger
03/10/1992US5095049 Centrifuging
03/04/1992EP0472908A2 Removal of low molecular weight fractions of melt processable tetrafluoroethylene copolymers
03/04/1992EP0472795A1 Process for recovering polymer
03/03/1992US5093472 Removal of residual solvent from acrylic acid polymer
03/03/1992US5093390 Automobile paints
02/1992
02/26/1992EP0471766A1 A process for minimizing residual free hydrazine in polymer latices.
02/25/1992CA1296476C Insoluble vinyl lactam clarifiers
02/18/1992US5089541 Agglomerating metal to form suspension
02/11/1992US5087676 Preparation of polymers from olefinically unsaturated monomers
02/05/1992EP0469759A1 Stabilisation of fluoropolymers
02/05/1992CN1058351A Process for removing impurities from olefin polymer or heavy oil
02/04/1992US5086131 Zeigler-type catalysis at high pressure; catalyst deactivation with organic peroxide; recycling
02/04/1992US5086079 Process for producing styrene polymers with narrow particle size distribution
02/04/1992CA2047854A1 Stabilisation of fluoropolymers
01/1992
01/29/1992EP0468765A1 Method for production of microfine coloured particles and electrophotographic toner using the particles
01/28/1992US5084134 Process for the devolatilization of polymer solutions
01/28/1992CA1295066C Latex agglomeration process, latex thus produced and its use for modifying thermoplastic matrix to render same impact resistant
01/25/1992CA2047649A1 Method for production of microfine colored particles and electrophotographic toner using the particles
01/22/1992EP0467551A2 Purification, impregnation and foaming of polymer particles
01/22/1992EP0467429A2 Removal of hydrogenation catalyst from polymer solutions by catalyzed precipitation
01/22/1992EP0467288A2 Acrylic polymers
01/15/1992EP0465964A1 Process for separation of volatile components from polymers prepared in emulsion
01/14/1992US5081360 Irradiating conveyance apparatus
01/14/1992US5080845 Method of removing impurities from polymeric synthetic plastics materials and an apparatus for carrying out the method
01/02/1992EP0463675A2 Process for treating effluents originating from the preparation of hydrocarbon resins
12/1991
12/31/1991US5077386 Quenching with organic phosphites in presence of Friedel-Crafts catalyst
12/31/1991US5077212 Culturing with amide-containing nutrients; for decomposing unreacted acrylamide to produce acrylic acid
12/27/1991EP0462697A1 Removal of residual acid from chlorinated polymers
12/27/1991EP0462317A2 Apparatus and method for the precipitation of polymers
12/25/1991CN1015180B Hydrophilic polymer and method for prodn. thereof
12/24/1991US5075344 Two step; controlled heat drying, applying microwave or radio frequency radiation
12/23/1991CA2045189A1 Process for treating effluents originating from the preparation of hydrocarbon resins
12/19/1991DE4118526A1 Removing residual monomers etc. from aq. polymer dispersions - by passing through the dispersion a stream of inert gas contg. specified vol. of water to gas
12/18/1991EP0461948A2 Process for the removal of N vinylcarbazole from poly (N vinylcarbazole)
12/17/1991US5073621 Oxidation, then precipitating the hydrogenation catalyst metals
12/15/1991CA2044417A1 Removal of hydrogenation catalyst from polymer solutions by catalyzed precipitation
12/14/1991CA2044337A1 Device and process for precipitating polymers
12/11/1991EP0460284A2 Thermal energy coagulation and washing of latex particles
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