Abstract: The invention relates to a process for mineral oil production by means of Winsor Type III microemulsion flooding, in which an aqueous surfactant formulation comprising at least one ionic surfactant of the general formula R1—O—(CH2C(CH3)HO)m(CH2CH2O)n—XY?M+ is injected through injection boreholes into a mineral oil deposit, and crude oil is withdrawn from the deposit through production boreholes. The invention further relates to ionic surfactants of the general formula.

Abstract: A carbon nanotube-ultra-high molecular weight polyethylene composite includes about 99 parts by weight to about 99.8 parts by weight of ultra-high molecular weight polyethylene, about 0.2 parts by weight to about 1 part by weight of carbon nanotubes, and about 0.1 parts by weight to about 0.5 parts by weight of a light stabilizer.

Abstract: It is proposed a new fluid loss control agent useful for the cementation of oil or gas wells. This fluid loss control agent consists of a mixture of a styrene-butadiene latex and a high molecular weight water-soluble polymer such as a copolymer AMPS-Am. The addition of the water-soluble polymer allows drastic reduction of the quantity of latex required to achieve fluid loss control performance and even gas migration control.

Abstract: The present invention provides aqueous dispersions that, for example, include the reaction product of an oxirane-functional vinyl addition polymer having an oxirane functionality between 0.5 and 5; an acid-functional polymer having an acid number 30 to 500; and a tertiary amine. Also described are coating compositions containing the dispersion and methods of forming the dispersion.

Abstract: The instant invention relates to storage stable aqueous solutions of stilbene optical brighteners with polyvinyl alcohols which can be directly used by the papermaker in that they may be diluted with water and/or be metered directly into a coating composition, to provide coated papers of a particularly high whiteness.

Abstract: A rubber composition containing a rubber component having an olefinic double bond, and an isobutylene polymer having a structural unit represented by the following formula (1) and a structural unit represented by the following formula (2), wherein the content of a low molecular weight substance whose molecular weight is 1000 or less in the isobutylene polymer is 5% by mass or less based on the total amount of the isobutylene polymer. [wherein X represents a divalent group, Y represents a substituted or unsubstituted alicyclic group having an unsaturated bond, and n represents 0 or 1.

Abstract: The invention relates to a polymer composition containing 3 to 95% by weight of a copolymer H and 3 to 95% by weight of a copolymer K, the copolymers H and K each having polyether macromonomer structural units and acid monomer structural units, which are present in the copolymers H and K in each case in a molar ratio of 1:20 to 1:1, and at least 20 mol % of all structural units of the copolymer H and at least 25 mol % of all structural units of the copolymer K being present in each case in the form of acid monomer structural units, the polyether macromonomer structural units of the copolymers H and K having side chains containing in each case at least 5 ether oxygen atoms, the number of ether oxygen atoms per side chain of the polyether macromonomer structural units of the copolymers H and K varying in each case in such a way that the corresponding frequency distribution diagrams, in which the number of ether oxygen atoms per side chain of a polyether macromonomer structural unit is plotted in each case along

Abstract: A halogenated polymer containing a functionalized polymer and optionally a blowing agent.

Abstract: An implant having shape forming and hardening functionality is described. The implant is formed from shape memory materials. The implant is formed from a shape memory alloy, shape memory polymer, or combinations thereof, to provide them with the ability to be compressed into a shape that facilitates minimally invasive insertion. Subsequent to such insertion, the shape memory materials provide the implant with the ability to regain its original shape and size. Subsequently, the implant becomes rigid, thereby providing strength, structural integrity and support.

Abstract: The invention provides methods for making copolymers and multi-arm block copolymers useful as drug delivery vehicles. The multi-arm block copolymers comprise a central core molecule, such as a residue of a polyol, and at least three copolymer arms covalently attached to the central core molecule, each copolymer arm comprising an inner hydrophobic polymer segment covalently attached to the central core molecule and an outer hydrophilic polymer segment covalently attached to the hydrophobic polymer segment, wherein the central core molecule and the hydrophobic polymer segment define a hydrophobic core region. The solubility of hydrophobic biologically active agents can be improved by entrapment within the hydrophobic core region of the block copolymer. The invention further includes pharmaceutical compositions including such block copolymers, pharmaceutical compositions, and methods of using the block copolymers as drug delivery vehicles.

Abstract: The invention relates to a copolymer comprising i) 3 to 40 mol % of an isoprenolpolyether derivative structural unit ? ii) 3 to 40 mol % of a vinyloxypolyether derivative structural unit ? and iii) 35 to 93 mol % of an acid structural unit ?, the structural units of the copolymer which belong to the vinyloxypolyether derivative structural unit ? having longer side chains than the structural units which belong to the isoprenolpolyether derivative structural unit ?.

Abstract: The present invention relates to a resin composition containing (A) 100 parts by weight of an isobutylene-based block copolymer having an unsaturated bond and comprising (a) a polymer block mainly comprised of isobutylene and (b) a polymer block mainly comprised of an aromatic vinyl-based compound, and (B) 0.1-50 parts by weight of a polythiol compound having two or more thiol groups in one molecule, which aims to provide an isobutylene-based block copolymer composition superior in air barrier property, flexibility, toughness and adhesiveness to rubber, and further, an inner liner as an inner liner layer of a pneumatic tire, which does not require a vulcanization step and superior in the balance between air barrier property, flexibility and toughness, and adhesiveness to carcass.

Abstract: The present invention provides aqueous dispersions that, for example, include the reaction product of an oxirane-functional vinyl addition polymer having an oxirane functionality between 0.5 and 5; an acid-functional polymer having an acid number 30 to 500; and a tertiary amine. Also described are coating compositions containing the dispersion and methods of forming the dispersion.

Abstract: The invention relates to a polymer composition containing 3 to 90% by weight of a copolymer H and 3 to 90% by weight of a copolymer K, the copolymers H and K each having polyether macromonomer structural units and acid monomer structural units, which are present in the copolymers H and K in each case in a molar ratio of 1:20 to 1:1, and at least 20 mol % of all structural units of the copolymer H and at least 25 mol % of all structural units of the copolymer K being present in each case in the form of acid monomer structural units, at least 60 mol % of the polyether macromonomer structural units of the copolymer H being represented by the isoprenol polyether derivative structural units and at least 60 mol % of the polyether macromonomer structural units of the copolymer K being represented by the vinyloxy polyether derivative structural units.

Abstract: A polyol composition comprising a polyol (a) and resin fine particles (b) dispersed in the polyol (a), and a method for producing the polyol composition are provided, wherein the resin fine particles (b) are particles such that an arithmetic standard deviation by volume of a particle size distribution of the particles, derived from respective values in 85 divisions of a range of 0.020 to 2000 ?m determined by a laser diffraction/scattering particle size distribution analyzer, is not more than 0.6. A resin fine particle-dispersed polyol composition that, even if the resin particles dispersed in the polyol have a small particle diameter, allows the production of a polyurethane resin having an excellent mechanical strength such as elongation at break, and a method for producing the same, are provided.

Abstract: Disclosed are a resin composition for laser engraving, comprising (Component A) at least one polymer selected from the group consisting of following (Component A-1) to (Component A-3), (Component B) a polyfunctional ethylenically unsaturated compound, and (Component C) a polymerization initiator, (Component A-1) a polyisoprene that is a plastomer at 20° C. and does not have an ethylenically unsaturated group at the ends of the main chain, (Component A-2) a polybutadiene that is a plastomer at 20° C. and does not have an ethylenically unsaturated group at the ends of the main chain, and (Component A-3) an unsaturated polyester urethane that is a plastomer at 20° C., has an ethylenically unsaturated group in the interior of the main chain, and does not have an ethylenically unsaturated group at the ends of the main chain.

Abstract: A polylactic acid-containing resin composition that include (a) a polylactic acid and (b) a (meth)acrylic copolymer having a molecular weight in excess of 30,000 and that is the reaction product of a monomer mixture including a methyl (meth)acrylate (i) and a (meth)acrylic acid ester (ii) that is different than the methyl (meth)acrylate (i). The (meth)acrylic acid ester (ii) is represented by any one of formula (I): CH2?C(R1)—COO—R2 formula (II): CH2?C(R1)—COO—(CH2CH2O)m—R3, or formula (III): CH2?C(R1)—COO—(CH2CH2O)n-Ph. A method for preparing the (meth)acrylic copolymer is also provided as well as articles formed from polylactic acid-containing resin compositions.

Abstract: New protective coating layers for use in wet etch processes during the production of semiconductor and MEMS devices are provided. The layers include a primer layer, a first protective layer, and an optional second protective layer. The primer layer preferably comprises an organo silane compound in a solvent system. The first protective layer includes thermoplastic copolymers prepared from styrene, acrylonitrile, and compatible compounds such as monomers, oligomers, and polymers comprising epoxy groups; poly(styrene-co-allyl alcohol); and mixtures thereof. The second protective layer comprises a highly halogenated polymer such as a chlorinated polymer to which may or may not be crosslinked upon heating.

Abstract: A polyol composition comprising a polyol (a) and resin fine particles (b) dispersed in the polyol (a), and a method for producing the polyol composition are provided, wherein the resin fine particles (b) are particles such that an arithmetic standard deviation by volume of a particle size distribution of the particles, derived from respective values in 85 divisions of a range of 0.020 to 2000 ?m determined by a laser diffraction/scattering particle size distribution analyzer, is not more than 0.6. A resin fine particle-dispersed polyol composition that, even if the resin particles dispersed in the polyol have a small particle diameter, allows the production of a polyurethane resin having an excellent mechanical strength such as elongation at break, and a method for producing the same, are provided.

Abstract: A process for creating polyolefin blends from waste streams with controlled rheological properties can include processing a waste stream to make a mixture comprising a mixture comprising polypropylene and polyethylene and compounding the mixture with one or more peroxides or nitroxides to produce a polyolefin blend. For example, a process can include: determining the required melt flow rate of the end product; determining the ratio of polyethylene to polypropylene to achieve the required melt flow rate; effecting a separation of polypropylene from polyethylene to achieve the desired composition; determining the amount of peroxide or peroxide concentrate required to increase the melt flow rate to the required level; melt compounding the mixture; evaluating the melt flow rate of the product; and adjusting the composition of polyethyelene and polypropylene or the amount of peroxide added if necessary to achieve the required melt flow rate.

Abstract: A styrenic composition including a polar modified styrenic co-polymer resulting from the polymerization of a combined mixture of at least one styrenic monomer and at least one comonomer and a biodegradable component is disclosed. The at least one comonomer includes a polar functional group and the polar modified styrenic co-polymer and the biodegradable component are combined to obtain a styrenic composition having a biodegradable component. Also disclosed is a method of enhancing bio-polymer miscibility in a styrenic based polymer. The polarity of a blend is manipulated by combining a styrenic monomer and a polar co-monomer to form a combined mixture and subjecting the combined mixture to polymerization to obtain a styrenic polymer blend to which a bio-polymer is added.

Abstract: The invention provides methods for making copolymers and multi-arm block copolymers useful as drug delivery vehicles. The multi-arm block copolymers comprise a central core molecule, such as a residue of a polyol, and at least three copolymer arms covalently attached to the central core molecule, each copolymer arm comprising an inner hydrophobic polymer segment covalently attached to the central core molecule and an outer hydrophilic polymer segment covalently attached to the hydrophobic polymer segment, wherein the central core molecule and the hydrophobic polymer segment define a hydrophobic core region. The solubility of hydrophobic biologically active agents can be improved by entrapment within the hydrophobic core region of the block copolymer. The invention further includes pharmaceutical compositions including such block copolymers, pharmaceutical compositions, and methods of using the block copolymers as drug delivery vehicles.

Abstract: The present invention relates to a Insulation layer for cables, a composition and a process thereof, showing improved stress whitening resistance by maintaining good mechanical and electrical properties and being environmental friendly.

Abstract: A composition including a polymer, the polymer having a non-dissociative functional group that interacts with a plating catalyst or a precursor thereof, a radical polymerizable group, and an ionic polar group; a method of producing a metal pattern material using the same: and a metal pattern material produced by the method.

Abstract: This invention provides a pellet derived from recycled waste products in particular from a mixture of two or more of cellulose fibers, recyclable plastic, glass and ceramics and other recyclable products such as tetra paks. The pellets can be used to make a variety of extruded or injection molded products including household trim and moldings, decking, shutters, etc.

Abstract: The present invention relates to a composition containing at least one lactic acid homopolymer and at least one block copolymer with a polydispersity index ranging from 1.5 to 5 and comprising: at least one block A that is miscible with the homopolymer and formed from monomers containing at least one methacrylate of formula CH2?C(CH3)—COOR1, and at least one block B that is immiscible with the homopolymer and formed from monomers containing at least one alkyl acrylate of formula CH2?CH—COOR2 and/or at least one methacrylate of formula CH2?C(CH3)—COOR3. The invention also relates to the use of this composition for the manufacture of medical articles, textile fibers, thermoformed plates or packaging, in particular films or bottles.

Abstract: The invention relates to a polymer composition containing 3 to 90% by weight of a copolymer H and 3 to 90% by weight of a copolymer K, the copolymers H and K each having polyether macromonomer structural units and acid monomer structural units, which are present in the copolymers H and K in each case in a molar ratio of 1:20 to 1:1, and at least 20 mol % of all structural units of the copolymer H and at least 25 mol % of all structural units of the copolymer K being present in each case in the form of acid monomer structural units, at least 60 mol % of the polyether macromonomer structural units of the copolymer H being represented by the isoprenol polyether derivative structural units and at least 60 mol % of the polyether macromonomer structural units of the copolymer K being represented by the vinyloxy polyether derivative structural units.

Abstract: The present invention generally relates to a process for preparing stabilized polymeric systems with excellent light, thermal and oxidation stability using an active, peroxide containing polymer oxidizing agents, amine-containing reducing agents, and/or nano-additives, and the polymer articles made therefrom.

Abstract: Surfactants of the general formula R1—X where R1 is an aliphatic C17H35-alkyl radical and X is a hydrophilic group, and the mean degree of branching of the R1 radical is from 2.8 to 3.7. Mixtures which comprise such surfactants and the use of such surfactants and of mixtures thereof for tertiary mineral oil extraction.

Abstract: The invention provides methods for making copolymers and multi-arm block copolymers useful as drug delivery vehicles. The multi-arm block copolymers comprise a central core molecule, such as a residue of a polyol, and at least three copolymer arms covalently attached to the central core molecule, each copolymer arm comprising an inner hydrophobic polymer segment covalently attached to the central core molecule and an outer hydrophilic polymer segment covalently attached to the hydrophobic polymer segment, wherein the central core molecule and the hydrophobic polymer segment define a hydrophobic core region. The solubility of hydrophobic biologically active agents can be improved by entrapment within the hydrophobic core region of the block copolymer. The invention further includes pharmaceutical compositions including such block copolymers, pharmaceutical compositions, and methods of using the block copolymers as drug delivery vehicles.

Abstract: The present invention relates to a prepreg, a composite film, and a laminated material for circuit used for thermosetting composite resin compositions and printed circuit boards, and particularly to a thermosetting composite resin composition mixed with COP (Cyclo Olefin Polymer) and thermally cross-linkable resin, wherein the COP having excellent electrical characteristics at a high frequency and thermally cross-linkable resin are blended to allow having a less dielectric constant and a less dielectric loss than those of the conventional composite resin composition, and inorganic fillers such as ceramic material, metal material, carbon black are added to allow having dielectric characteristics covering from a low dielectric constant to a high dielectric constant.

Abstract: A shrink film comprises a skin layer and a base layer. The skin layer may comprise polystyrene or modified polyester. The base layer may comprise alpha-olefin/cyclic-olefin copolymer or alpha-olefin/vinyl aromatic copolymer. The film has a free shrink at 100° C. of at least about 10%. The film is useful for shrink sleeve applications.

Abstract: The invention provides a medical implant or medical implant part comprising porous ultrahigh molecular weight polyethylene having a weight average molecular weight of about 400,000 atomic mass units or more and a porosity of about 15% to about 65%. The invention further provides a process for producing a medical implant or medical implant part.

Abstract: A copolymer is formed from an isoolefin having from 4 to 7 carbon atoms and an alkylstyrene. The copolymer has a substantially homogeneous compositional distribution. The copolymer has from about 8 to about 12 wt % of alkylstyrene and at least 85 wt % of isoolefin. The copolymer is preferably halogenated with about 1.1 to about 1.5 wt % of a halogen. The copolymer may in elastomeric nanocomposites. To obtain a good dispersion of the nanoclay in a formulated compound, at least one cure accelerator is selected from the group consisting of mercaptobenzothiazole disulfide, mercaptobenzothiazole, cyclohexyl benzothiazole disulfide, dibutyl thiourea, tetramethylthiuram disulfide, 4-4-dithiodimropholine, zinc dimethyldithiocarbamate, and zinc dibutylphosphorodithiate.

Abstract: VDF-based curable fluorelastomers, having a glass transition temperature from ?10° C. to ?35° C., comprising: B) monomer of formula: CF2?CFOCF2OCF3 (a), C) one or more comonomers selected from: tetrafluoroethylene (TFE), per-fluoromethylvinylether (PMVE), perfluoropropene (HFP), and an amount of —COF end groups in the polymer lower than the sensitivity limit of the method which uses the FT-IR spectroscopy described in the present application.

Abstract: The invention relates to polymeric ultrafiltration or microfiltration membranes of, for instance, Halar, PVDF or PP, incorporating PVME or vinyl methyl ether monomers. The PVME may be present as a coating on the membrane or dispersed throughout the membrane or both. The membranes are preferably hydrophilic with a highly asymmetric structure with a reduced pore size and/or absence of macrovoids as a result of the addition of PVME. The PVME maybe cross-linked. The invention also relates to methods of hydrophilising membranes and/or preparing hydrophilic membranes via thermal or diffusion induced phase separation processed.

Abstract: The invention provides a medical implant or medical implant part comprising porous ultrahigh molecular weight polyethylene having a weight average molecular weight of about 400,000 atomic mass units or more and a porosity of about 15% to about 65%. The invention further provides a process for producing a medical implant or medical implant part.

Abstract: The present invention provides an optical film and a retardation film that each include an acryl resin, and 20 to 65 parts by weight of a graft copolymer including a conjugated diene rubber based on 100 parts by weight of the acryl resin, and an electronic device including the same.

Abstract: VDF-based curable fluoroelastomers, having a glass transition temperature lower than ?49° C., preferably lower than ?50° C., and having the following composition, as percent moles: A) from 25% to 50%, preferably from 30% to 45%, of the monomer of formula: CF2?CFOCF2OCF3 (a); B) one or more (per)fluorinated comonomers having at least one unsaturation of ethylene type in amounts from 75% to 50%; preferably from 70% to 55%; said one or more comonomers comprising vinylidene fluoride (VDF) in amounts from 50% to 75% on the total of the monomer moles; the sum of the molar percentages of the monomers being 100%; said fluoroelastomers containing an amount of —COF end groups in the polymer lower than the sensitivity limit of the method reported in the description.

Abstract: VDF curable fluoroelastomers, ionically cured, having a compression set after a time of 24 h (ASTM D 39/B) at ?10° C. lower than 60%, preferably lower than 50% and at ?25° C. lower than 90%, preferably lower than 75%, comprising hexafluoropropene (HFP) in amounts higher than 10% by moles and one vinylether of formula: CF2?CFOCF2OCF3 (a), an amount of —COF and groups in the polymer lower than the sensitivity limit of the method using the FT-IR spectroscopy described in the present application.

Abstract: A copolymer of (i) an alkyl acrylate or alkyl methacrylate and (ii) a hydroxyalkyl acrylate or hydroxyalkyl methacrylate is used as a secondary protective colloid in the suspension polymerization of vinyl chloride monomer. The alkyl group of the alkyl acrylate or alkyl methacrylate is preferably a 2-ethylhexyl group. The hydroxyalkyl group of the hydroxyalkyl acrylate or hydroxyalkyl methacrylate is preferably a hydroxyethyl group.

Abstract: Compositions comprising the reaction product of: (a) a polyalkenamer; and (b) an organic modifier that includes at least one carbon to carbon unsaturated bond and at least one functional group selected from carboxyl, hydroxyl, amino, epoxy, (meth)acrylate, vinyl, ester, isocyanate, carbonyl, urethane, anhydride, or a metal salt thereof. Also disclosed are golf balls that include (i) a core, (ii) at least one intermediate layer, and (iii) at least one cover layer, wherein at least one of the core, intermediate layer or cover layer includes the polylalkenamer/functionalized organic modifier composition as a majority ingredient.

Abstract: Emulsion paint composition for obtaining special textile or suede effect comprising a filler at least partly consisting of pre-pigmented spherical aliphatic polyurethane particles. About 3-10% of the spherical particles has a particle size between 63-90 micrometers and 25-40% of the spherical particles has a particle size between 40-63 micrometers. Before applying the paint as a semi-opaque top coat the substrate is first coated with an opaque acrylic primer of a corresponding color and subsequently dried. The top coat is applied by brush in cross way fashion to obtain a suede effect, or it can be applied by roller, while subsequently a tool is used comprising a flat side provided with stiff parallel projecting fibers such as synthetic grass fibers which are dragged over the fresh paint layer to obtain a linen effect.

Abstract: Chemically crosslinked polycyclooctene having excellent shape recovery properties is prepared by ring-opening metathesis polymerization of cis-cyclooctene followed by chemical crosslinking. The crosslinked polycyclooctene can be shaped, the shape memorized, a new shape imparted with the original shape being recoverable by suitable temperature adjustment. The dependence of shape memory characteristics on degree of crosslinking was established. In addition to polycyclooctene, blends thereof with other materials such as SBR, EVA, polyurethane rubbers, and inorganic fillers can be utilized to provide chemically crosslinked products having excellent and tailored shape memory properties.

Abstract: A method comprising contacting at least one conventional elastomer, at least one singlet oxygen functionalized elastomer (SOFE), and a styrene monomer in a reaction zone under conditions suitable for the formation of a styrenic polymer composition. A method comprising contacting a reaction mixture comprising styrene, polybutadiene, and a photoperoxidized polybutadiene in a reaction zone under conditions suitable for the formation of a polymeric composition, wherein the elastomer particle size distribution in the polymeric composition does not linearly correlate with the elastomer particle size distribution in the reaction mixture. A reactor blended polymer comprising styrene, a conventional elastomer, and a singlet oxygen functionalized elastomer.

Abstract: A composition including a polymer, the polymer having a non-dissociative functional group that interacts with a plating catalyst or a precursor thereof, a radical polymerizable group, and an ionic polar group; a method of producing a metal pattern material using the same: and a metal pattern material produced by the method.

Abstract: Disclosed is a bearing material of a medical implant, which is an ultrahigh molecular weight polyethylene (UHMWPE) composite. The composite comprises, for example, UHMWPE and a polyethylene copolymer having a polymer backbone and pendant hydrophilic groups or pendant surface active agents that are attached to the polymer backbone. Also disclosed are methods for preparing bearing materials. The bearing material has one or more advantageous properties including reduced immune response, reduced wear, and/or increased lubrication.

Abstract: A process is provided for preparing polymer composites from compositions comprising i) a polyolefin, ii) a polymer selected from the group consisting of polymers having hydroxyl groups and polymers having amino groups and iii) a polar ethylene copolymer having copolymerized units selected from the group consisting of C4-C8 unsaturated anhydrides, monoesters of C4-C8 unsaturated acids having at least two carboxylic acid groups, diesters of C4-C8 unsaturated acids having at least two carboxylic acid groups and mixtures thereof. The process is suitable for use with recycle streams that contain polymeric materials that are laminates or composites of dissimilar polymers.

Abstract: A two step process for treating an oil or gas well. The first step uses a cross linking agent, such as borax, as a preliminary wash for the well following drilling. The cross linking agent cleans the well of excess mud and pre-coats the tubing and the formation surfaces with the cross linking agent. The second step introduces a cement-polymer mixture into the well. A polymer, such as for example polyvinyl alcohol, that undergoes cross linking when exposed to the cross linking agent is employed. When the polymer comes into contact with the cross linking agent in the well, cross linking of the polymer occurs. This cross linking helps to prevent fluid loss into the formation. Also, because the cross linking agent wash previously cleaned the surfaces of the tubing and the formation, better bonding between the cement and the surfaces of the tubing and the formation occurs.

Abstract: The instant invention relates to a process for the preparation of grafted polymers wherein in a first step A) a oligomer or polymer is prepared by controlled radical polymerization in the presence of a stable free nitroxyl radical or a nitroxylether to obtain a nitroxyl terminated oligomer or polymer and in a second step B) the nitroxyl terminated oligomer or polymer is mixed and reacted with a thermoplastic or elastomeric polymer or copolymer in its molten state at a temperature at which cleavage of the nitroxyl-polymer/oligomer bond occurs, whereby the nitroxyl terminated oligomer or polymer is grafted onto the thermoplastic or elastomeric polymer. A further subject of the present invention is a grafted polymer prepared by said process.