Patents for C08F 6 - Post-polymerisation treatments (8,582)
10/1989
10/17/1989US4874839 Heat treatment prior to melt processing; decoloring; purification
10/17/1989CA1262394A1 Preparation of concentrated, stable water-in-oil emulsions of water-soluble or water-swellable polymers
10/10/1989US4873382 Purification of telomers prepared from chlorotrifluoroethylene and trichlorotrifluoroethane
10/10/1989CA1262232A1 Process for drying vesiculated beads and associated shading pigments therewith
10/03/1989US4871828 Purification/isolation of isocyanate condensates
09/1989
09/27/1989EP0333879A1 Process for continuously producing granular polymer and process for controlling particle size of said polymer
09/27/1989CN1035832A Process for removing solvent from solution of polymer
09/26/1989CA1261566A1 Method for producing plastic optical fiber with heat resistance
09/26/1989CA1261544A1 Closed loop recycle of vent gas in polymerization process
09/26/1989CA1261541A1 Preparation of redispersible, pourable ethylene-vinyl chloride copolymer powders
09/19/1989CA1259733A1 Method of rapidly dissolving polymers in water
09/12/1989CA1259447A1 Method of catalyst deactivation
09/06/1989EP0331419A2 Post-reactor stabilization of polymers
09/05/1989US4863524 Method of cleaning the interior of polymerization reactor
08/1989
08/23/1989EP0329325A2 Method of producing acrylamide polymer particles
08/23/1989EP0329324A2 Polymeric compositions and their production
08/22/1989US4859751 Process for emulsion polymerization
08/22/1989US4859733 Mixture with zinc oxide and zeolite;food packaging
08/16/1989EP0328302A2 Method for the deactivation and neutralization of polyolefin catalysts
08/15/1989US4857633 Method for high temperature phase separation of solutions containing polymers
08/15/1989US4857631 Method for producing de-watered grafted rubber concentrate
08/15/1989US4857616 Xanthogen disulfide for molecular weight control and tetraalkylthiuram disulfide
08/09/1989EP0327006A2 Low emission emulsion paints, coatings and latex-based plasters, and method for their manufacture
08/08/1989US4855400 Removal of catalyst residues from carbon monoxide/olefin polymers with catalyst complexing agent
08/08/1989US4855338 Method for treating grafted protein latices
08/02/1989CN2041974U 过滤器 Filter
08/02/1989CN1034372A Superabsorbent polymeric compositions and process for producing the same
08/01/1989US4853461 Mixing with acid, heating
08/01/1989US4853422 Thermosetting arcylic latexes
07/1989
07/26/1989EP0325198A1 Polymer solution treatment process
07/26/1989EP0324985A2 Process for the preparation of water-absorbent and water-swellable polysaccharide graft polymers
07/05/1989CN1033620A Process for puring and separating isocyanate condensation compounds by extraction with liquid supercritical carbon dioxide
07/05/1989CN1004697B Continous treatment process of polymer composition
06/1989
06/27/1989US4842743 Extraction with fluid carbon dioxide
06/27/1989US4842694 Apparatus for treating thermoplastic polymers
06/27/1989CA1256645A1 Pulverulent emulsion polymers and process for their production
06/21/1989EP0320571A2 Production of alpha-olefins
06/20/1989US4840991 Aqueous dispersions of partially cross-linked emulsion copolymers
06/14/1989EP0319622A1 Method for the polymerization of acrylics
06/07/1989EP0318822A2 Process for purifying N-vinyl carbazole polymers containing impurities
05/1989
05/24/1989EP0317138A2 Superabsorbent polymeric compositions and processes for producing them
05/24/1989EP0316982A2 Method for separating metal contaminants from organic polymers
05/23/1989US4833221 Method for polymerizing a methyl methacrylate molding composition
05/23/1989US4832915 Vapor recovery from particles containing same
05/16/1989US4831116 Process for coagulating a grafted rubber compound
05/16/1989CA1254325A1 Process for the production of polymers and aqueous solutions thereof
05/10/1989CN1032801A Process for producing cycloolefin random copolymer
05/10/1989CN1032798A Process for decolorizing of resinous polymers of vinylaromatic-conjugated diene type
05/03/1989EP0314488A2 Hydrolysis of poly (acetoxystyrene) in aqueous suspension
05/03/1989EP0313849A1 Thickening agent for physically drying paints and coatings, and production process thereof
05/03/1989CN1004076B Process for preparation of beta-crystalline polypropylene
04/1989
04/26/1989EP0312948A2 Process for the manufacture of low-pressure polyolefines with better devolatilization of residual monomers and dispersing agents
04/25/1989CA1253291A1 Process for removal of low molecular weight fractions from vinyl pyridine polymers and copolymers
04/19/1989EP0312213A1 Romoval of catalyst residues
04/18/1989US4822535 Method for producing small, spherical polymer particles
04/12/1989EP0310691A1 Pigmented low temperature cure emulsions
04/11/1989US4820463 Process of degassing and pelletizing polyolefins
04/11/1989CA1252598A1 Phase separation processes
04/06/1989WO1989002905A1 Process for continuously producing granular polymer and process for controlling particle size of said polymer
04/06/1989WO1989002902A1 Process for continuously treating a polymer reaction solution
04/05/1989EP0310394A1 Process for producing cycloolefin random copolymer
03/1989
03/29/1989EP0309434A1 Process for decolorizing of resinous polymers
03/29/1989EP0309404A2 Bioadhesive copolymer useful as a carrier in the administration of medicines by direct contact
03/29/1989EP0309364A2 Process for the purification and isolation of condensed isocyanates by extraction with liquid or supercritical carbon dioxide
03/14/1989US4812491 Thermosetting acrylic latexes
03/08/1989EP0305447A1 Improved insoluble vinyl lactam clarifiers
03/01/1989EP0305060A2 Polymer non-aqueous dispersion, process for preparing the same and coating composition formulated therewith
03/01/1989EP0304582A1 Process for making styrene polymers having a narrow grain size distribution
02/1989
02/28/1989US4808262 Method for devolatilizing polymer solutions
02/28/1989CA1250697A1 Process for production of styrene polymers
02/15/1989CN1031092A Removing fines from mass resins
02/15/1989CN1031090A Method of decreasing free-formaldehyde content in water-soluble polyvinyl formal resin
02/14/1989US4804775 Using synergistic mixture of peroxycarbonate, diperoxyketal and peroxyester chaser catalyst
02/14/1989US4804725 Reduction of the emission of hydrocarbons in pressure-reduction processes in high pressure polymerization reactors
02/09/1989DE3724853A1 Process for degassing PVC dispersions
02/08/1989EP0302399A2 Removing fines from mass resin
02/07/1989US4803260 Aggregation with a water insoluble liquid, separation, and dehydration
02/07/1989US4803259 Improved color of polymer
02/07/1989US4802769 Apparatus for treating thermoplastic resin
01/1989
01/31/1989US4801683 Method for the deactivation and neutralization of polyolefin catalysts
01/31/1989US4801637 Using coordination catalyst containing magnesium, titanium and aluminum in alcoholic solution containing aromatic carboxylic acid
01/24/1989US4800216 Acrylonitrile-butadiene-styrene
01/18/1989EP0299344A2 Low dust spray-dried emulsion polymerisate and its preparation and use processes
01/18/1989EP0299317A2 Heat sensitive polymer dispersions
01/17/1989US4798867 Impact resistant thermoplastic resin composition
01/17/1989US4798854 Surface charges, zeta potentials, coagulation, fillers
01/03/1989US4795854 Separating effluent from a polymerization reactor, i.e. gaseous ethylene and liquid polyethylene
01/03/1989US4795802 Adosrption with active carbon, zeolites or an acidic ion exchanger
01/03/1989CA1248292A1 Melt-processible tetrafluoroethylene copolymers and processes for preparing them
12/1988
12/28/1988EP0296990A1 Process for preparing polybutadiene containing hydroxyl
12/28/1988CN88104541A Process for manufacture of hydroxylated polybutadiene
12/27/1988US4794167 Continuous feeding of dispersion and liquids to atomization apparatus
12/27/1988US4794166 Process for the preparation of a hydrogel which is largely free from monomers
12/21/1988EP0295430A2 Process for preparing virtually uncured polyacetylene films
12/21/1988CN88103323A Hydrophilic polymer and method for production thereof
12/20/1988US4792490 Pure, bulk emulsion polymers that permit uniform impregnation, injection molding
12/06/1988US4789716 Method of manufacturing polymaleic anhydride powders
12/06/1988US4789713 Preparation of terpolymers
12/06/1988US4789694 Glycoluril crosslinked addition emulsion polymer binders
11/1988
11/22/1988US4786717 Deactivation of aluminum alkyls
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