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WO/2002/040551A1 |
The present invention discloses a process for preparing a supported catalyst system for the production of polymers by polymerising or copolymerising one or more olefins comprising 2 to 10 carbon atoms, vinyl aromatic compounds or vinyl a...
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WO/2002/038631A1 |
Process for preparing an olefin polymerisation catalyst componentcomprising magnesium halide, titanium halide and a carboxylic acid ester electron donor, in which the precursors of its consitituents are reacted in solution from which the...
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WO/2002/034792A2 |
The invention relates to a method for producing linear polymers or styrene block-copolymers by anionic polymerisation, wherein the chain-breaking is carried out by an n-alkyl glycidyl ether or a dialkyl ketone.
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WO2001094123B1 |
Infra-red absorbing polymers useful in imageable products and the lithographic printing field comprise infra-red absorbing groups carried as pendent groups on a polymer backbone. Certain infra-red absorbing groups may also act to insolub...
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WO/2002/008299A1 |
The present invention provides protected functionalized polymerization initiators having less than one molar equivalent chain extension agent introduced therein to provide hydrocarbon solubility.
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WO/2002/006394A2 |
The syndiotactic polystyrene nanocomposite according to the present invention has nano silicate materials dispersed individually in a styrene polymer matrix by intercalation and exfoliation during polymerization. Besides, the syndiotacti...
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WO/2002/000586A1 |
The present invention relates to propanedione derivatives represented by general formular (A), and their use as UV-absorbent. Wherein R?1¿ is substituted aromatic ring, optionally substituted heteroaromatic ring, or optionally substitut...
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WO/2002/000737A1 |
The invention relates to a method for the detection and/or measurement of a phenol comprising: (a) contacting the sample to be tested with a polymer imprinted with the phenol or an analogue thereof; and (b) measuring binding of the pheno...
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WO/2002/000442A1 |
An imaging member is composed of a hydrophilic imaging layer having a hydrophilic heat-sensitive polymer containing heat-activable thiosulfate groups, and optionally a photothermal conversion material. Upon application of energy that gen...
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WO/2002/000736A2 |
The invention provides a novel process for purifying4-alkoxystyrene polymers by slurrying the crude polymerin methanol. After rigorous stirring, the purified polymer is removed by centrifugation, filtration or decantation. The process is...
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WO/2001/092598A1 |
Metal surfaces may be treated with a chromium-free agent containing one or more polymers of a particular type and one or more V, Zr, Ti, Mo, W, Mn or Ce compounds. The coatings thereby obtained provide excellent corrosion resistance, pai...
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WO/2001/085802A1 |
A process for producing a styrene resin reduced in the content of low-molecular ingredients which comprises: a continuous anionic polymerization step in which a feed system having the following composition (A) is continuously introduced ...
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WO/2001/085808A1 |
The invention relates to polymers based on polystyrenesulphonic acids, stabilised by means of transition metal ions, the use thereof as cationic ion exchangers and cationic ion exchangers made from the above polymer.
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WO/2001/083573A1 |
The present invention is directed to ion-sensitive, hard water dispersible polymers. The present invention is also directed to a method of making ion-sensitive, hard water dispersible polymers and their applicability as binder compositio...
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WO/2001/079307A1 |
The invention relates to the use, in an aqueous medium, of a copolymer (A) for the production of molding materials and molded parts, which copolymer is producible by radical polymerization of a) at least one olefinically unsaturated mono...
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WO/2001/074912A1 |
The present invention is directed to a process for producing a hydrogenated polymer or copolymer by hydrogenating prior to polymer isolation or finishing.
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WO/2001/064523A2 |
The invention relates to a method for producing multilayer paint coatings according to which: (I) an electrophoretic paint that can be cathodically deposited is deposited on an electrically conductive substrate; (II) at least one coating...
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WO/2001/062803A2 |
A series of support systems for atom transfer radical polymerization of various monomers is disclosed. The complexes of a copper bromide and a multidentate amine physically adsorbed onto silica gel, alumina gel or other polymeric particl...
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WO/2001/058962A1 |
The present invention discloses a continuous process for the production of anionically-polymerized organic materials having controlled architectures. The organic materials may be made from one or more temperature-sensitive anionically-po...
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WO/2001/058964A1 |
A syndiotactic styrene (co)polymer which comprises structural units of at least one kind as represented by general formula (1): (wherein R?a¿ is hydrogen, halogeno, C¿1?-C¿30? hydrocarbyl, or a substituent containing one or more atoms...
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WO/2001/055227A2 |
A process for the polymerization of one or more alpha-olefins having at least 3 carbon atoms, which comprises contacting the monomer or monomers in a polar or non-polar solvent under polymerization conditions with a homogeneous catalyst ...
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WO/2001/055095A1 |
The present invention refers to new classes of polymerisable monomers, to molecularly imprinted polymers obtainable by polymerisation of at least one of the monomers and a crosslinking monomer in the presence of a template molecule. The ...
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WO/2001/049748A1 |
The present invention provides a supported catalyst comprising (A) a polymer (B) a supporter, (C) a transition metal compound, and optionally (D) (a) a compound which can form an ionic complex by the reaction with the transition metal co...
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WO/2001/048031A1 |
An optical-disk substrate which is satisfactory in transferability and releasability during molding, is reduced in warpage, and has high strength. The optical-disk substrate is made of a hydrogenated styrene polymer in which the content ...
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WO/2001/044327A2 |
The invention relates to a method for producing a conversion product (A), which comprises the following steps: (i) reacting, under radical conditions, a reaction mixture containing at least one radically convertible monomer (a) in the pr...
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WO/2001/044343A1 |
A visible light photopolymerizable composition comprising a) an aryliodonium salt and b) a titanocene derivate. These compositions can be used together with an epoxide resin as a dental composition.
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WO/2001/042314A1 |
The invention relates to a method for carrying out the transition metal-catalyzed production of polymers having a syndiotactic or predominantly syndiotactic structure from vinyl aromatic monomers. The invention also relates to a method f...
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WO/2001/036494A1 |
The invention relates to a method for carrying out the anionic polymerization of vinyl aromatic monomers or dienes in the presence of a lithium organyl or lithium alcoholate and a magnesium compound or an aluminum compound, whereby a ste...
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WO/2001/032613A1 |
A process for producing peroxydicarbonates comprising first reacting at least one inorganic peroxide with at least one alkali metal hydroxide to form at least one alkali metal peroxide. The at lest one alkali metal peroxide is added to a...
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WO/2001/021666A1 |
A cationic polymerization reaction in which either a (perfluoroalkoxy)biphenyldiazonium salt derivative represented by general formula (1) or a (perfluoroalkyl)dibenzofuranium salt derivative represented by general formula (3) and obtain...
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WO/2001/019513A1 |
(1) A catalyst for $g(a)-olefin production which comprises (a) a complex of a transition metal in Groups 8 to 10 of the Periodic Table, (b) a clay, clay mineral, or ion-exchanging lamellar compound, and (c) an amine compound or an adduct...
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WO/2001/017914A1 |
This invention is directed to a method of clarifying and dewatering industrial waste water using anionic and nonionic dispersion polymers.
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WO/2001/012676A1 |
A method for evaluating the polymer growth inhibition ability of a compound or compounds is disclosed wherein the method comprises: A) weighing a dry seed of insoluble polymer capable of growing via a living polymerization mechanism; B) ...
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WO/2001/012750A1 |
Disclosed herein is a method for inhibiting the premature polymerization of ethylenically unsaturated monomers comprising adding to said monomers an effective amount of an inhibitor having structural formula (I) wherein R¿1? and R¿4? a...
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WO/2001/012721A1 |
Polymer blends, in particular polyphenylene ether-polyamide blends, are effectively compatibilized by incorporating under blending conditions certain oligomers, cooligomers, polymers and copolymers of narrow molecular weight distribution...
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WO/2001/012614A1 |
The invention relates to N-oxyl radicals of formula (I) wherein X represents S, NR?5¿, O, SO or SO¿2?, and; R?1¿, R?2¿, R?3¿, R?4¿, and R?5¿, independent of one another, represent organic groups or; R?1¿ and R?2¿ and/or R?3¿ an...
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WO/2001/007495A1 |
The present invention relates to new photoactive polymers, their use as liquid crystal (LC) orientation layers and their use in the construction of unstructured and structured optical and electro-optical elements and multi-layer systems....
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WO/2001/005841A1 |
A process is disclosed for a continuous, high temperature polymerization process for preparing a gel free polymeric product. The process comprises continuously charging into a reactor at least one monomer such that the reactor is filled ...
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WO/2001/005843A1 |
A process is disclosed for a continuous, high temperature polymerization process for preparing a free radically polymerized epoxy-functional polymeric product. The process comprises continuously charging into a reactor at least one epoxy...
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WO/2001/002447A2 |
The invention relates to a catalyst composition for the production of syndiotactic styrole polymers based on fluorine-containing metal complex compounds, a method for the production of said catalyst composition and to a method for the pr...
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WO/2001/002445A1 |
A catalyst system useful to polymerize and co-polymerize polar and non-polar olefin monomers is formed by in situ reduction with a reducing agent of a catalyst precursor comprising {Cp?*¿ MRR'¿n?}?+¿{A}?-¿ wherein Cp?*¿ is a cyclope...
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WO/2001/000686A1 |
The invention relates to a method for copolymerizing polar and non-polar monomers, to a suitable catalyst system for said method, containing one or more transition metal compounds of groups 5-10 of the periodic table, one or more radical...
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WO/2000/078818A1 |
The invention concerns a method for obtaining an aqueous dispersion of hydrophobic polymers dispersed in the form of particles with mean diameter less than 100 nm stabilised solely with a macromolecular surfactant based on low molecular ...
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WO/2000/078829A1 |
A process for producing of polystyrene with predominantly syndiotactic structure characterized by using a catalytic system consisting of a specific organo-magnesium compound and commonly known components and also characterized by the int...
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WO/2000/078831A1 |
The present invention pertains to an interpolymer comprising; (1) from 5 to 85 mol percent of polymer units derived from one or more vinyl or vinylidene aromatic monomers, (2) from 15 to 95 mol percent of polymer units derived from at le...
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WO/2000/078709A1 |
A vinylated alkoxyamine represented by general formula (1) is produced by a process comprising the step of heating divinylbenzene together with a nitroxide compound and an organic peroxide to the heat decomposition temperature of the org...
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WO/2000/076943A1 |
The invention relates to a method for preventing undesired polymerisation in a mixture of substances containing ethylenically unsaturated compounds, by maintaining an active concentration of a stabiliser system which contains N-oxyl radi...
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WO/2000/075207A1 |
The invention concerns a method for preparing polymers, which consists in contacting: an ethylenically unsaturated monomer; a source of free radicals; and a compound (I) or general formula (IA), wherein R?2¿ represents a group, a cycle ...
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WO/2000/075199A1 |
Low molecular weight $g(a)-methylstyrene oligomers are obtained by oligomerizing $g(a)-methylstyrene in the presence of a single component initiator complex containing a cation component and a weakly coordinating anion component. The ini...
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WO/2000/075128A1 |
A vinyl monomer of the structure R-B-Ar(-CH=CH¿2?)¿n? (1) in which Ar is an aromatic ring (arylene group); n is an integer > 0, in particular one or two; B is a bridge structure; R is a (C¿2-30?)-hydrocarbon group carrying two or more...
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