Abstract: A method for the polymerization of free radically polymerizable vinyl monomers involves polymerizing free radically (co)polymerizable vinyl monomers in a batch reaction under essentially adiabatic conditions, and utilizing scavenger monomer to reduce undesirable residual monomer.

Abstract: A method for the polymerization of free radically polymerizable vinyl monomers involves polymerizing free radically (co)polymerizable vinyl monomers in a batch reaction under essentially adiabatic conditions in the presence of an non-reactive diluent that can remain in the polymer product.

Abstract: A copolymer of formula 1 in which M1 is a unit obtainable from ring opening metathesis polymerization (ROMP); R is an alkyl, ether, ester or aryl unit; M2 and M3 are independently selected from units obtainable by reversible addition fragmentation chain transfer polymerization (RAFT); X is a terminal unit selected from the group consisting of dithioester, trithiocarbonate, xanthate; and m is an integer from 2 to 1 million, n is an integer from 2 to 500,000 and k is an integer from 2 to 500,000.

Abstract: Processes for making a core and core-shell copolymers are provided herein. Processes for making crosslinked elastomeric core particles includes emulsion polymerizing, in the presence of a radical polymerization initiator, a polymerization mixture containing at least one ethylenic elastomeric monomer, at least one crosslinking agent, and at least one sulfur-containing additive of the formula I below, where R and Z are defined herein. The core-shell copolymers formed are useful for example as additives in polymer matrices such as for modifying impact strength and improving optical properties.

Abstract: Fluorosilicon polymers are disclosed that are prepared by a process comprising reacting a) iodinated oligomers having copolymerized units of perfluoro(methyl vinyl ether) and vinylidene fluoride or tetrafluoroethylene that contain 40-90 mole percent copolymerized units of vinylidene fluoride or tetrafluoroethylene and 10-60 mole percent copolymerized units of perfluoro(methyl vinyl ether), said oligomers having two functional endgroups and having a number average molecular weight between 1000 and 25,000 with b) a methoxyvinyl silane or an ethoxyvinyl silane to form a silicon-containing polymeric adduct that is further reacted with an acid to form a crosslinked fluorinated polymer.

Abstract: The present invention relates to a process for the preparation of amphiphilic gradient copolymers by Controlled Radical Polymerization in the presence of a RAFT (Reversible Addition Fragmentation Transfer) agent. The copolymers of the invention exhibit low polydispersity indices and low viscosities in solution and are readily soluble in an alkaline medium.

Abstract: A polymerizable composition for forming an optical device, which comprises a polymerizable monomer of the following formula (1) and a polymerizable monomer of the following formula (2). Using the composition makes it possible to produce an optical device which has a high light transmittability and keeps a reduced transmission loss even in wet. wherein R1 and R2 each are H or D; R3 is H, D, CH3, CD3 or a halogen atom; R4is an alkyl group having from 2 to 8 carbon atoms and at least partly substituted with a fluorine atom, wherein R1 and R2 each are H or D; R3 is H, D, CH3, CD3 or a halogen atom; X1 to X5 each are H, D, a halogen atom or CF3, and at least one of X1 to X5 is a halogen atom or CF3.

Abstract: A polymer is provided comprising a first pendant group selected from at least one of a perfluorinated ether group or a perfluoroalkanesulfonamido group, a second pendant group comprising an ammonium group, wherein the second pendant group is free of silicon, and a third pendant group comprising an ammonium group and a reactive siliconcontaining group. A composition comprising the polymer is provided. The polymer and composition are useful for protecting a substrate, for example, to render the substrate oil repellent, water repellent, or both, or to provide stain repellency to the substrate.

Abstract: A composition comprises a polymer having a first pendant group selected from at least one perfluorinated ether group or perfluoroalkanesulfonamido group, a second pendant group comprising an ammonium group, wherein the second pendant group is free of silicon, and a third pendant group comprising an ammonium group and a reactive silicon-containing group. The polymer and composition are useful for protecting a substrate, for example, to render the substrate oil repellent, water repellent, or both, or to provide stain repellency to the substrate.

Abstract: A mineral slurry comprises mineral particles in an amount equal to or greater than about 60 percent by total weight of the slurry, wherein 85 percent of the mineral particles have an average particle size equal to or less than 2 micrometers; a polyelectrolyte dispersant derived from an acrylate polymer formed by reversible addition-fragmentation chain transfer polymerization, wherein the polyelectrolyte dispersant comprises endgroups comprising thio-containing residues derived from a trithiocarbonate chain transfer agent, wherein the polyelectrolyte dispersant is in an amount less than about 35 pounds of the dispersant per ton of dry mineral particles, and wherein the polyelectrolyte dispersant has a molecular weight of 3000 to 10,000 Daltons and a polydispersity of at least 1.0 and less than 1.5; and the remainder water.

Abstract: A composition and method of making having a perfluoroelastomer gum with a nitrogen-containing cure site and an end group represented by —CF3—CF2H, —CFH2, and/or —CH3, and having a low carbonyl-containing end group ratio, which yield cured fluoroelastomers with improved retained sealing force and articles therefrom.

Abstract: The invention concerns the polymers obtained by the use of sulphur compounds in a process for controlled radical polymerization in water of acrylic acid and/or acrylic acid with hydrosoluble monomers. It concerns also their uses as dispersant agents or agents to aid grinding and/or co-grinding of mineral matters in aqueous suspensions, and as dispersant agents incorporated directly in aqueous formulations containing mineral matters. Finally, the invention concerns the formulations of mineral matters obtained in this manner.

Abstract: Process for preparing an antistatic for olefin polymerization by contacting an antistatically acting compound comprising at least one hydrogen atom bound to a nonmetallic heteroatom with at least one metal alkyl in an amount which is sufficient to react completely with the at least one hydrogen atom bound to a heteroatom, wherein the antistatically acting compound and the metal alkyl are each present in a concentration of at least 0.01% by weight during contacting.

Abstract: The present invention relates to novel photoresist compositions and processes for preparing the same utilizing polymers having a low polydispersity via the use of certain chain transfer agents (CTA) with certain monomers to provide said polymers. The polymers incorporating the chain transfer agents can be homopolymers, or made with additional monomers to provide copolymers. These polymers/copolymers are then converted into photoresist compositions for use as such.

Abstract: High durable polarized film comprising a radiation curable PSA layer for lamination in TFT/LCD applications have high humidity and heat resistance. In one embodiment, the adhesive comprises a UV curable acrylic polymer, a compatible tackifier, a multifunction unsaturated oligomer, and a long chain alkyl acrylate monomer.

Abstract: The invention relates to copolymer(s) latexes prepared from vinylic monomers, non-conjugated dienes and optionally comonomers, particularly acrylic ones, in the presence of at least one chain transfer agent of the following formula. These latexes are particularly well-suited for coating paper and cardboard.

Abstract: The present invention provides a method for producing acryl syrup by bulk polymerization, comprising a step of preparing a mixture comprising monomer component and 2,4-diphenyl-4methyl-1-pentene; a step of heating the mixture to the initial reaction temperature; and a step of adding an polymerization initiator having the half-life of not more than 30 minutes at 5-80° C., wherein the initial reaction temperature is controlled so that the polymerization initiator has the half-life of up to 30 minutes. The method of the present invention has such advantages that reaction runaway does not occur, the control of molecular weight and conversion rate is possible even at low exothermic temperature, and a partially polymerized acryl syrup can also be prepared therefrom.

Abstract: This invention relates to novel ethylenically unsaturated macromers, preformed stabilizers prepared from these novel macromers, polymer polyols prepared from either the novel ethylenically unsaturated macromers or the preformed stabilizers, and to processes for the preparation of these compositions.

Abstract: To provide initiators in two components having no discoloring after polymerization and excellent polymerization-curability under the existence of water, and provide a polymerizable composition using the initiators in two components. The initiators in two components is for polymerizing and curing a (meth)acrylate compound, and the initiator includes (a) a peroxide being compatible or soluble with water, (b) an aromatic sulfinic acid compound, (c) a tert-amine compound, and (d) water. The polymerizable composition uses the initiators in two components. Particularly, preferably, the polymerizable composition includes a first component and a second component. The first component comprising (a) a peroxide being compatible or soluble with water, and a (meth)acrylate compound, and the second component includes (b) an aromatic sulfinic acid compound, (c) a tert-amine compound, and (d) water.

Abstract: The invention provides a method for preparing an aqueous dispersion of polymer particles comprising the following steps: (i) preparing a dispersion having a continuous aqueous phase, a dispersed organic phase comprising one or more ethylenically unsaturated monomers, and an amphiphilic RAFT agent as a stabilizer for said organic phase, and (ii) polymerizing said one or more ethylenically unsaturated monomers under the control of said amphiphilic RAFT agent to form said aqueous dispersion of polymer particles, novel amphiphilic RAFT agents for use in this method, novel RAFT agents useful in making these amphiphilic RAFT agents and methods for their manufacture.

Abstract: The invention relates to a method of preparing statistical microgels. The inventive method comprises a step involving the radical polymerisation of a composition containing: at least one monoethylenically-unsaturated monomer, at least one multiethylenically-unsaturated monomer, a free radical source and a control agent. The invention also relates to first generation microgels thus prepared and all the compounds resulting from said microgels (next-generation microgels).

Abstract: A process for producing a stable polymer such as poly(hydroxystyrene) which comprises the decarboxylation of a corresponding phenolic in the presence of a non-amine basic catalyst and a polar organic solvent, followed by the polymerization thereof.

Abstract: To provide: a water-soluble amphoteric copolymer having excellent hydrophilicity and high adsorption capability, and capable of exhibiting dramatically excellent dispersibility even under high hardness conditions and being preferably used in a detergent composition application, for example; an application thereof; and a production method of such a water-soluble amphoteric copolymer.

Abstract: The present invention provides novel non-immunogenic, hydrophilic/cationic block copolymers comprising a neutral-hydrophilic polymer and a cationic polymer, wherein both polymers have well-defined chain-end functionality. A representative example of such a block copolymer comprises poly(N-(2-hydroxypropyl)methacrylamide) (PHPMA) and poly(N-[3-(dimethylamino)propyl]methacrylamide) (PDMAPMA). Also provided is a synthesis method thereof in aqueous media via reversible addition fragmentation chain transfer (RAFT) polymerization. Further provided are uses of these block copolymers as drug delivery vehicles and protection agents.

Abstract: A process comprising polymerizing at least one fluorinated monomer in an aqueous medium containing initiator and polymerization agent to form an aqueous dispersion of particles of fluoropolymer, the polymerization agent comprising: fluoropolyether acid or salt thereof having a number average molecular weight of at least about 800 g/mol; and fluorosurfactant having the formula: [R1—On-L-A?] Y+ wherein: R1 is a linear or branched partially or fully fluorinated aliphatic group which may contain ether linkages; n is 0 or 1; L is a linear or branched alkylene group which may be nonfluorinated, partially fluorinated or fully fluorinated and which may contain ether linkages; A? is an anionic group selected from the group consisting of carboxylate, sulfonate, sulfonamide anion, and phosphonate; and Y+ is hydrogen, ammonium or alkali metal cation; with the proviso that the chain length of R1—On-L- is not greater than 6 atoms.

Abstract: Provided herein are methods for preparing vinylidene-terminated polyolefins. Further, provided herein are novel sulfide-terminated polyolefins of the formula: wherein R1 is a polyolefin group and R2 is hydrocarbyl; and methods for producing the same.

Abstract: The present invention provides a polymerization-curable composition comprising at least one kind of a cationically polymerizable compound having in the molecule at least one cationically polymerizable functional group selected from the group consisting of an alicyclic epoxy group, a vinylether group and an oxetane group, and at least one kind of a thermally latent polymerization initiator, characterized in that the polymerization-curable composition is allowed to undergo an exothermic polymerization reaction by applying primary thermal energy to a portion of the polymerization-curable composition, and then the entire polymerization-curable composition is polymerization-cured by secondary thermal energy generated as a result of the exothermic polymerization reaction; a method for polymerization-curing thereof; and a polymerization-cured resin composition.

Abstract: The present invention provides a method for producing an (meth)acrylate syrup by bulk polymerization which is characterized by: a) using (meth)acrylate ester monomer; and b) using 2,4-diphenyl-4methyl-1-pentenol singly or together with a thiol chain transfer agent as a chain transfer agent, c) initiating polymerization by adding an initiator having the half-life of up to 30 minutes at 55-80° C. of initial reaction temperature, so as to maintain the peak reactor temperature below 95° C. and the reactor conversion rate as 5-50 weight %. The method for producing an (meth)acrylate syrup of the present invention has such advantages that reaction runaway does not occur, the control of molecular weight and conversion rate is possible even at low exothermic temperature without stirring failure, and a partially polymerized (meth)acrylate syrup can also be prepared therefrom.

Abstract: The invention pertains to low polydispersity acrylic polymers useful for photoimaging and photoresist compositions, and to the photoimaging processes which use these compositions. The low polydispersity polymers of this invention are prepared using controlled radical polymerization (CRP) techniques, such as RAFT (reversible addition fragmentation chain transfer) polymerization.

Abstract: A pigment dispersion includes a pigment and a block copolymer having ionic aromatic monomers. The pigment dispersions can be used for manufacturing inkjet inks and for the coating of colored layers. A process for preparing the pigment dispersion is also disclosed.

Abstract: A pigment dispersion includes a pigment with at least one carboxylic acid group and a block copolymer including aromatic monomers having at least one carboxylic acid group or a salt thereof and aromatic monomers having at least one sulfonic acid group or a salt thereof. The pigment dispersions can be used for manufacturing inkjet inks and for the coating of colored layers.

Abstract: The present invention is directed to a method of producing an amphiphilic block copolymer, including the steps of: (1) preparing a first aqueous polymerization medium which is comprised of (a) 4-vinylpyridine, (b) a trithiocarbonate RAFT agent, and an emulsifier, wherein the emulsifier is prepared in-situ within the aqueous polymerization medium by the reaction of a latent surfactant with a surfactant activator; (2) polymerizing the 4-vinylpyridine within the first aqueous polymerization medium in the presence of a first free radical initiator to produce a poly(4-vinylpyridine); (3) protonating the poly(4-vinylpyridine) to form a protonated poly(4-vinylpyridine) RAFT macroinitiator; (4) preparing a second aqueous polymerization medium which is comprised of the protonated poly(4-vinylpyridine) RAFT macroinitiator and a monomer containing ethylenic unsaturation but is exclusive of a surfactant; and (5) polymerizing the protonated poly(4-vinylpyridine) RAFT macroinitiator and monomer containing ethylenic u

Abstract: This invention concerns a free radical polymerization process, selected chain transfer agents employed in the process and polymers made thereby, in which the process comprises preparing polymer of general Formula (A) and Formula (B) comprising contacting: (i) a monomer selected from the group consisting of vinyl monomers (of structure CH2=CUV), maleic anhydride, N-alkylmaleimide, N-arylmaleimide, dialkyl fumarate and cyclopolymerizable monomers; (ii) a thiocarbonylthio compound selected from Formula (C) and Formula (D) having a chain transfer constant greater than about 0.1; and (iii) free radicals produced from a free radical source; the polymer of Formula (A) being made by contacting (i), (ii) C and (iii) and that of Formula (B) by contacting (i), (ii) D, and (iii); and (iv) controlling the polydispersity of the polymer being formed by varying the ratio of the number of molecules of (ii) to the number of molecules of (iii); wherein Q, R, U, V, Z, Z?, m, p and q am as defined in the text.

Abstract: Copolymers made with quasi-living polyolefins and unsaturated acidic reactants, dispersants using same, and methods of making same are provided. Under one aspect, a copolymer of an unsaturated acidic reactant and high molecular weight polyolefin, wherein the polyolefin comprises an exo-olefin terminated quasi-living polymeric product, is provided. The quasi-living polymeric product is formed, e.g., by forming a quasi-living cationic polyolefin under suitable quasi-living conditions, and contacting the cationic polyolefin with an agent selected to convert the cationic polyolefin to the exo-olefin terminated quasi-living polymeric product. The cationic polyolefin can be formed, e.g.

Abstract: Provided herein are methods for a vinylidene terminated polyolefin comprising: a. ionizing a polyolefin in the presence of a Lewis acid to form an ionized polyolefin; b. reacting the ionized polyolefin from step (a) with one or more dihydrocarbylmonosulfides; and c. reacting the product of step (b) with one or more proton acceptor compounds. In some embodiments, the dihydrocarbylmonosulfide has the formula: R1—S—R2 wherein R1 and R2 are each, independently, hydrocarbyl.

Abstract: The positive photosensitive resin of the present invention has an acid-labile protecting group and the structure represented by the following general formula (1): (wherein X1 and X2 may be the sake or different and each independently a straight or branched chain hydrocarbon group, having 1 to 30 carbon atoms, an alicyclic hydrocarbon group or a heterocyclic group, which may substituted with straight or branched chain hydrocarbon of 1 to 6 carbon atoms or —O— hydrocarbon; Y1 and Y2 may be the same or different and are each independently a hydrogen atom, a straight or branched chain hydrocarbon group having 1 to 6 carbon atoms, a sulfur-containing hydrocarbon group, or an aromatic hydrocarbon group which may have a substituent; and two Zs may be the same or different and each independently an oxygen atom or a sulfur atom).

Abstract: A color-stable superabsorbent polymer having long-term color stability, and methods of manufacturing the polymer, are disclosed. The superabsorbent polymer is prepared using a sulfinic acid derivative, like 2-hydroxy-2-sulfinatoacetic acid, a salt thereof, or a mixture thereof, as the reducing agent in a polymerization initiator system for the preparation of a superabsorbent polymer from monomers. The resulting superabsorbent polymer resists color degradation during periods of extended storage, even at an elevated temperature and humidity.

Abstract: A s,s?-bis-(?, ??-disubstituted-??-acetic acid)-trithiocarbonate and derivatives thereof can be used as an initiator, chain transfer agent, or terminator for polymerization of monomers such as free radical polymerizable monomers. Homopolymers, copolymers, and the like as well as block copolymers can be made utilizing the trithiocarbonate compound such as in a living free radical polymerization as well as to form telechelic polymers.

Abstract: The present invention relates to mixtures for preparing transparent plastics, encompassing a) compounds of the formula (I) and (II) where each R1, independently of the others, is hydrogen or a methyl radical, each R2, independently of the others, is a linear or branched, aliphatic or cycloaliphatic radical, or a substituted or unsubstituted aromatic or heteroaromatic radical, and each of m and n, independently of the other, is a whole number greater than or equal to 0, where m+n>0, and b) at least one monomer (A) capable of free-radical polymerization with a molar mass of at least 150 g/mol, which contains at least two terminal olefinic groups, where at least two of the olefinic groups of the monomer (A) have, in the ?- and/or ?-position with respect to the olefinic group, atoms which differ in nature and/or number, in the radical which connects the at least two olefinic groups.

Abstract: A method for forming a polymer including a sulfur-containing functional group, the method comprising introducing a sulfur-containing initiator defined by the formula with conjugated diene monomer and optionally copolymerizable monomer within a polymerization medium and allowing the sulfur-containing initiator to initiate the polymerization of the conjugated diene monomer and the optional copolymerizable monomer, where R1 is a monovalent organic group, R2 is a divalent organic group, R3 is a divalent organic group or a bond, and a is an integer from 1 to about 5.

Abstract: The application provides a method of producing a comb polymer comprising the steps of: (a) Providing: (i) a plurality of monomers which are linear, branched or star-shaped, substituted or non-substituted, and have an olefinically unsaturated moiety, the olefinically unsaturated moiety being capable of undergoing addition polymerisation; (ii) an initiator compound; the initiator compound comprising a homolytically cleavable bond. (iii) a catalyst capable of catalysing the polymerisation of the monomer; and (b) Causing the catalyst to catalyse, in combination with the initiator, the polymerisation of a plurality of the monomers to produce the comb polymer. Catalysts and polymers obtainable by the process are also provided. Preferably, the comb polymer is capable of binding proteins and may be produced from monomers which are alkoxy polyethers, such as poly(alkyleneglycol) or polytetrahydrofuran.

Abstract: An improved polymerization and work-up process makes it possible to produce specific nitrile rubbers which have a particular ion index and a particular magnesium content which is responsible for an excellent vulcanization rate and leads to vulcanizates having an advantageous property profile.

Abstract: An improved polymerization and work-up process makes it possible to produce specific nitrile rubbers which have a particular ion index which is responsible for an excellent vulcanization rate and leads to vulcanizates having an advantageous property profile.

Abstract: A monosulfonium salt in which very little unreacted raw material remains, which has a purity of at least 96%, and which has one sulfonio group in its molecule is manufactured without a refining step. After (a) an aryl compound, (b) a sulfoxide compound, (c) a dehydrating agent, and (d) a BF4, PF6, AsF6, or SbF6 salt of an alkali metal or an alkaline earth metal are introduced into a reaction system, (e) an inorganic acid is added, so that the aryl compound (a) and the sulfoxide compound (b) are subjected to dehydration condensation.

Abstract: The disclosure provides for a process and polymerization system to produce isoolefin polymers (72) utilizing polymorphogenates (16, 26) in the catalyst system to control polydispersity (MWD). The disclosure also provides a catalyst system (20) comprising a plurality of active catalyst complex species (34) formed by combination of a Lewis acid (24), an initiator (22) and a polymorphogenate (26), as well as polymers made using the catalyst system or process. The polymorphogenate (16, 26) can promote or mimic the formation of different active catalyst complex species (34) having different polymerization rates, i.e. different rates of propagation, chain transfer, or termination, as observed by different polydispersities resulting from the presence of relatively different proportions of the polymorphogenate.

Abstract: The present invention provides a star polymer which comprises a central core and three or more branches bonded to the central core, and has a weight average molecular weight of from 1,000 to 100,000, wherein at least one of the branches containing at least one repeating unit selected from the group consisting of the following repeating units (1), (2), (3), (4) and (9); and a process for producing the star polymer. The present invention also provides a chemically amplified positive resist composition comprising the star polymer and an acid generator.

Abstract: The present invention relates to a soluble polyfunctional vinylaromatic copolymer improved in heat resistance, resistance to thermal decomposition, solvent solubility, and processability. The soluble polyfunctional vinylaromatic polymer is obtained by cationically polymerizing, at a temperature of 20 to 120° C., one or more monomer ingredients including 20 to 100 mol % divinylaromatic compound (a) in the presence of a donor ingredient, e.g., a quaternary ammonium salt, with the aid of a Lewis acid catalyst and an initiator represented by the following general formula (1) wherein R1 represents hydrogen or a monovalent C1-6 hydrocarbon group; R2 represents an aromatic or aliphatic hydrocarbon group having a valence of p; Z represents halogen or C1-6 alkoxy or acyloxy; and p is an integer of 1 to 6; provided that when two or more R1's and Z's are present per molecule, they may be identical to different from each other.

Abstract: Method for increasing the molecular weight of polyacrylates, in which polyacrylates, functionalized at least in part of their chain ends by functional groups X, are reacted with a compound having at least functional groups Y capable of linking reactions with functional groups X.

Abstract: The present invention is directed to the preparation of photoresist polymers via living free radical polymerization techniques. Sterically bulky ester monomers are utilized as the polymerization components. Use of chain transfer agents is included in polymerization processing conditions. Cleavage of polymer terminal end groups that include a heteroatom are described.

Abstract: Provided is a curable composition which can easily regulate the properties of a cured object prepared therefrom, which can prepare a cured object that does not substantially discolor or soften a finishing agent or coating material applied to the surface thereof, and which has a high curing rate in the inner regions. The curable composition contains (A) a polymer having at least one mercapto group at the molecular ends, the polymer being derived from a thiocarbonylthio group-containing polymer (a2) prepared by polymerizing a monomer (a1) which contains an acrylic ester as a principal component and which contains 50% by weight or more of the acrylic ester and less than 50% by weight of a monomer copolymerizable with the acrylic ester in the presence of a thiocarbonylthio group-containing compound; (B) a compound having at least two mercapto groups per molecule; and (C) an oxidizing agent.