Patents for C08F 6 - Post-polymerisation treatments (8,582)
02/1991
02/13/1991EP0412363A2 Process for improving the water absorption capacity of crosslinked, water swellable polymers
02/12/1991US4992529 Contacting with an aqueous solution of inorganic acid in presence of carboxylic acid; separation of hydrogenation catalysts
02/09/1991CA2021760A1 Water absorption capacity of crosslinked, water-swellable polymers
02/09/1991CA2021759A1 Preparation of finely divided polymer powders
02/06/1991EP0411510A2 Extruder isolation of polymers from solution
02/05/1991CA2022571A1 Extruder isolation of polymers from solution
01/1991
01/30/1991EP0410361A2 Process for producing styrene polymers
01/30/1991CN1011414B Water-soluble polymer composition
01/29/1991US4988761 Polyvinyl alcohol hydrogel formed by gelation, heat treatment, useful for providing improved cartilage in humans
01/29/1991CA1279745C Compacted agglomerates of polymer latex particles
01/23/1991EP0409678A1 Cryoextensibles thermoplastiques elastomers, process for preparation
01/22/1991US4987220 Purification of poly(n-vinylcarbazole) containing impurities
01/22/1991CA1279439C Process for the polymerization or copolymerization of butadiene
01/22/1991CA1279424C Process for the production of composite material based on a polymer matrix
01/16/1991EP0408433A1 Ampholytic hydrophilic polymers, process for their preparation and their use as absorbants
01/16/1991EP0408363A2 Modification method of synthetic resins and modified synthetic resins
01/15/1991US4985540 Process for removing rhodium-containing catalyst residue from hydrogenated nitrile rubber
01/14/1991CA2021053A1 Modification method of synthetic resins and modified synthetic resins
01/10/1991WO1991000302A1 Precipitation polymerization of vinyl lactam terpolymers
01/09/1991EP0406630A1 Compositions of thermoplastic polymers in powder form
01/08/1991WO1991000876A1 Densified polyethersulfone
01/08/1991CA2063609A1 Densified polyethersulfone
01/05/1991CA2020290A1 Cryoextensible thermoplastic elastomer and process for its preparation
01/02/1991CA1278639C Vinyl chloride monomer stripping process
01/02/1991CA1278638C Process for continuously removing monomers from an aqueous dispersion of a polymer
01/01/1991US4981578 BF3 removal from BF3 catalyzed olefin oligomer
12/1990
12/27/1990EP0404643A1 Method for removing mercaptans
12/27/1990CA1278227C Method for producing small, spherical polymer particles
12/22/1990CA2019488A1 Method for removing mercaptans
12/18/1990CA1277945C Purification process of polymerization solvent
12/11/1990US4977241 Agglomeration of particles contained in latex
11/1990
11/27/1990CA1277077C Colour of polymers
11/22/1990EP0398738A1 Dewatering agents for polymer slurries
11/22/1990EP0398151A2 Polymere associative thickener in powder form
11/21/1990CN1047092A Process for agglomerating latex and its application to modification of thermoplastic matrix
11/20/1990US4971879 Polymer for toner, process for preparation thereof and toner composition
11/18/1990CA2013026A1 Dewatering agents for polymer slurries
11/15/1990WO1990013591A1 Process for coagulating a grafted rubber compound
11/15/1990WO1990013578A1 A process for minimizing residual free hydrazine in polymer latices
11/14/1990CN1010410B Process for agglomerating latex and its application to modificaiton of thermoplastic matrix
11/13/1990CA1276381C Process for the manufacture of elastomers in particulate form
10/1990
10/31/1990EP0395104A1 Fluidized bed product discharge process
10/28/1990CA2015628A1 Fluidized bed product discharge process
10/24/1990EP0393916A1 Method for the production of amidase enzyme
10/23/1990CA1275532C Removal of catalyst remnants from ethene/co copolymers
10/17/1990CN1010022B Preparation of olefin polymerization catalyst component
10/16/1990US4963634 Air classified particles
10/16/1990US4963601 Polymer non-aqueous dispersion, process for preparing the same and coating composition formulated therewith
10/12/1990WO1990012038A1 Method of producing syndiotactic polypropylene
10/10/1990EP0299344B1 Low dust spray-dried emulsion polymerisate and its preparation and use processes
10/09/1990US4962185 Solvent extraction with toluene, then distillation
10/09/1990US4962133 Precipitation polymerization; controlling particle size by varying rate of stirring
10/04/1990WO1990011304A1 Process for reducing the residual monomer content of diallyl ammonium salt polymers
10/02/1990US4960864 Washing in the presence of a tricarboxylic acid
09/1990
09/20/1990WO1990010653A1 Method or removing volatile substances and apparatus therefor
09/20/1990WO1990010485A1 Improved suspension polymerization in an organic medium
09/20/1990DE3908803A1 Verfahren zur reduzierung des restmonomergehalts von diallylammoniumsalz-polymerisaten A process for reducing the residual monomer content of polymers diallylammonium salt
09/19/1990EP0387671A1 Process for preparing polymers by anionic polymerization
09/18/1990US4958006 Fluidized bed product discharge process
09/12/1990EP0288790B1 Process and apparatus for the continuous production of organic polymers from their solutions or emulsions
09/11/1990US4956433 Coatings
09/05/1990EP0385619A2 Recovery of double metal cyanide complex catalyst from a polymer
09/04/1990US4954615 Process for drying carboxyl containing polymers of vinylidene monomers
09/04/1990US4954614 Process for minimizing residual hydrazine in polymer latices
09/04/1990CA1273746A1 PROCESS FOR THE PURIFICATION OF ETHYLENE/.alpha.OLEFIN COPOLYMERS
08/1990
08/29/1990EP0290474B1 Deactivation of aluminum alkyls
08/29/1990CN1044917A Transporter useful to irradiation of rays
08/28/1990US4952672 Method for the devolatilization of thermoplastic materials
08/28/1990US4952304 Removal of catalyst residues
08/22/1990EP0383537A2 Irradiating conveyance apparatus
08/21/1990US4950723 Heat and aging resistance; stability
08/14/1990US4948872 Suitable for preparation of plastisols with improved rheological properties
08/08/1990EP0381432A2 Preparation of large beads of a styrene copolymer
08/08/1990EP0380931A2 Method of continuously drying hydrophilic polymer gels
08/08/1990CN1044415A Adsorbant for purificn. of polyolefines and process for prepn. thereof
08/07/1990US4946940 Gaseous separation agent injected into polymer-solvent solution
08/01/1990EP0379958A1 Vacuum drying method
08/01/1990EP0379951A2 Process for preparing polymers by anionic polymerization
07/1990
07/31/1990US4945154 Particles with reduced surface area; additives for thermo-setting resins
07/31/1990US4944888 Suspension polymerization in an organic medium
07/30/1990CA2007333A1 Preparation of large beads of styrene/methacrylic acid copolymer
07/25/1990EP0379394A1 Use of sorbent for the purification of polyolefins
07/23/1990CA2008239A1 Neutralization agents for anionic polymerization
07/18/1990CN1008822B Improved process for the polymerization or copolymerization of butadiene
07/17/1990US4942223 Process for separating a polymer from a solution containing the same
07/17/1990CA1271889A1 Method of manufacturing polymaleic anhydride powders
07/11/1990CN1043721A Process for in situ blending of polymers
07/10/1990US4940833 Olefin monomer separation process
07/10/1990US4940472 Centrifugal devolatilizer
07/10/1990CA1271593A1 Drying and removing residual acid from halogenated polymer resins
07/10/1990CA1271587A1 Residual vinyl chloride removal process from vinyl chloride polymers in aqueous suspension
07/04/1990EP0376684A2 Process for preparing polymer emulsion particles having pores
07/04/1990CN1008628B Reduction of catalyst activity in solution process for polymerization of alpha-olefines
07/04/1990CN1008627B Reduction of isomerization in solution process for polymerization of alpha-olefines
06/1990
06/27/1990EP0375099A2 Method and apparatus for purifying and separating a high polymer from a solution thereof
06/27/1990EP0374879A2 Method for extraction of impurities in polymer
06/27/1990CN1008525B Process for manufacturing hydroxylated polybutadiene
06/27/1990CA2006736A1 Process for preparing polymer emulsion particles having pores
06/21/1990DE3919354C1 Removal of monomers from aq. suspension - by distilling in column heated by water vapour, giving polymer particles
06/20/1990EP0373439A2 Process for controlling particle size in the preparation of polymers in powder form
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