Abstract: An irradiator includes: a piezoelectric transformer accommodated in a housing; a first electrode connected to the piezoelectric transformer, to which a voltage is applied from the piezoelectric transformer; and an irradiation opening that ejects at least one of a plasma generated by the first electrode and an active gas generated by the plasma. At least a part of the first electrode is located between the piezoelectric transformer and the irradiation opening.

Abstract: The invention relates to a supercalendered Kraft paper production for a release liner, which contains both non-recycled bleached chemical pulps and recycled pulp produced from release liner supercalendered Kraft paper. When highly specific raw material is used for recycling, the characteristics of the recycled pulp may be adjusted already upon recycling. The recycled pulp obtained from supercalendered Kraft paper that has been used as a substrate of a release liner may be used without further refining for manufacturing supercalendered Kraft paper. Excessive refining can thus be avoided and the compatibility of the recycled pulp may be optimized for supercalendered Kraft paper production. The non-recycled pulps may be refined less, as well. This leads to positive effects in supercalendered Kraft paper manufacturing process, such as improved dewatering and energy efficient drying.

Abstract: A perfluoropolyether phosphate ester represented by the general formula: [C3F7O{CF(CF3)CF2O}nCF(CF3)CH2O]2PO(OH) (wherein n is an integer of 1 to 20). This compound is obtained by reacting a perfluoropolyether alcohol represented by the general formula: C3F7O{CF(CF3)CF2O}nCF(CF3)CH2OH (wherein n is an integer of 1 to 20) with phosphorus oxychloride, and hydrolyzing the obtained compound represented by the general formula: [C3F7O{CF(CF3)CF2O}nCF(CF3)CH2O]2POCl (wherein n is an integer of 1 to 20). Moreover, the perfluoropolyether phosphate ester or a salt thereof forms a surface treatment agent comprising the perfluoropolyether phosphate ester or a salt thereof as an active ingredient.

Abstract: A fiber body manufacturing method includes: a dispersing step of dispersing a mixture containing a defibrated material which includes fibers and a binding agent which exhibits a binding property by moisture absorption, the mixture having a moisture content of 10 to 30 percent by weight; a depositing step of depositing the mixture dispersed in the dispersing step; a humidifying step of imparting moisture by water vapor or mist to the binding agent in a deposit deposited in the depositing step so as to exhibit the binding property; and a forming step of forming the deposit humidified in the humidifying step into a fiber body.

Abstract: A cleaning wipe having a nonwoven substrate impregnated with a dispersal composition including at least one of a polar solvent and a water-in-oil emulsion is disclosed. The dispersal composition provides an enhancement to the dispersion of the nonwoven substrate including a binder when placed within a waste water stream after use, thereby more effectively disposing of the wipe after use.

Abstract: Provided is an aqueous ink composition for a writing instrument with excellent stability of ink flow and the like, in which aggregation of a microcapsule pigment and clogging due to such aggregation are suppressed. The aqueous ink composition for a writing instrument includes a microcapsule pigment which includes inside, at least, a pigment and a medium of a fatty acid polyol ester. A melting point of the fatty acid polyol ester is preferably 40° C. or higher, and is preferably 70° C. or lower.

Abstract: The invention is to provide a base paper for a raising seedling pot and a raising seedling pot produced from the base paper, wherein while the base paper maintains a sufficient strength during raising seedlings and planting in the field, it is degraded over time by soil microorganisms after transplanting in the field and is produced by using a crosslinking agent that does not contain formaldehyde, resulting in a reduced burden on the environment; the base paper for a raising seedling pot, wherein a citric acid crosslinking agent, as a crosslinking agent for cellulose, is used in order to block the hydroxy group of cellulose in paper through crosslinking; and the raising seedling pot produced by molding and processing the base paper.

Abstract: Pulps, cellulose ether products, and methods of making pulps are described.

Abstract: Unique, inexpensive, and. strong biocomposites are obtained from blending cellulose matrix materials pith lignocellulosic reinforcement materials with the aid of alkaline aqueous solvent and cold temperatures. These lignocellulosic composites (LCs) are produced without use of any thermoplastic resins, adhesives, catalysts, plasticizers or d chemical or physical procedures. The LCs include a matrix and a reinforcement material. The matrix is a cellulose material (e.g., cotton, hemp, flax, or wood) that is liquefied using an aqueous alkaline solvent solution under cold temperatures to more readily adhere and or incorporate/encapsulate the lignocellulosic reinforcements (wood chips, fibers, and other lignocellulosic sources).

Abstract: A cleaning wipe having a nonwoven substrate impregnated with a dispersal composition including at least one of a polar solvent and a water-in-oil emulsion is disclosed. The dispersal composition provides an enhancement to the dispersion of the nonwoven substrate including a binder when placed within a waste water stream after use, thereby more effectively disposing of the wipe after use.

Abstract: Disclosed are processes for manufacturing cross-linked cellulosic fibers and tissue products comprising cross-linked cellulosic fibers, manufactured by reacting an oxidized polyol, in particular, an oxidized sugar having at least two aldehyde groups with a plurality of cellulosic fibers to yield treated fibers and heating the treated fibers at a temperature greater than about 140° C. to cure the treated fibers. In particular, said sugar is sucrose and the oxidising agent comprises hydrogen peroxide. The instant cross-linked fibers are manufactured without well-known cross-linking agents such as formaldehyde or polycarboxylic acids, and have good brightness and color and resist yellowing. Furthermore, the cross-linked cellulosic fibers are generally free from off odors and the instant cross-linked cellulosic fibers have enhanced properties, such as improved wet bulk, compared to uncross-linked fibers.

Abstract: The invention relates to a process for the conversion of lignocellulose into an organic acid including an alkaline pretreatment step and a fermentation step, wherein liquid phase obtained in the fermentation step is recycled to the alkaline pretreatment step and/or the fermentation step. Organic acid is recovered as its magnesium of calcium salt from solid phase obtained in the fermentation step.

Abstract: A medium processing apparatus includes a conveyor, a receptacle, a liquid applier, and a crimper. The conveyor conveys a medium. The receptacle holds the medium conveyed by the conveyor. The liquid applier is disposed upstream from the receptacle in a conveyance direction of the medium to apply liquid to a liquid application position on the medium conveyed by the conveyor. The crimper presses and deforms the liquid application position on a plurality of media including the medium held on the receptacle to bind the plurality of media.

Abstract: The present invention provides a novel method and composition for enhancing the efficiency of starch adsorption (i.e., starch trapping) from starch-containing furnishes comprising high content of recycled fibers for use in paper making processes such as pulp, paper, or board production. A novel polymer coagulation system is disclosed in which two quick inversion cationic emulsion polymers (starch trapping polymers A and B) are co-mixed at optimal blend ratios to meet specific recycled fiber and process water requirements for different recycled fiber plants and added to furnishes prior to formation of paper or board in a paper machine. Co-mixed solutions of starch trapping polymers A and B provide synergistic enhancements in (i) starch trapping efficiency and (ii) starch retention in the produced paper or board over equivalent dosage levels of singly administered polymer A, polymer B, or conventional starch trapping products, without over-flocculation or formation of stickies.

Abstract: Disclosed herein are treated pulp sheets comprising cellulose pulp fibers treated with a densifying agent and having a relatively low moisture content. In certain embodiments, the treated pulp sheets are used to produce fiberized pulp having an unexpectedly low knot content, while maintaining density and softness properties usually associated with similarly treated pulp that is fiberized at higher moisture content. Methods of making fiberized pulp from the treated pulp sheets, as well as products comprising the treated pulp sheets or fiberized pulp from the treated pulp sheets, are also provided.

Abstract: The present disclosure relates to retractable diagnostic devices, and hybrid diagnostic devices comprised of water-dispersible, flushable, biodegradable, or water-soluble material and non-water-dispersible, non-flushable, or non-water-soluble material.

Abstract: Disclosed are single ply creped webs and products made therewith. The webs and products are generally durable, flexible In and highly dispersible. For example, the creped single ply tissue products have a Slosh time less than 1 minute, and more preferably less than about 30 seconds, and a wet cross-machine direction (CD) tensile strength greater than about 100 g/3?. The foregoing properties are achieved even in those instances where the products comprise a latex binder disposed on an outer surface. For example, the tissue products may be produced by a print crepe process that disposes a non-crosslinked latex binder on at least one of the product's outer surfaces.

Abstract: A water-dispersible composite structure, which comprises one or more layers, and a method of producing the same. At least a part of the layers is formed by a fibrous web or sheet containing 50-90 parts by weight of wood fibers and 10-90 parts by weight of annual or perennial plant fibers and/or 10-50 parts by weight of synthetic short-cut fibers, and 0.1-20% by weight of a binder, calculated from the weight of the fibers, and at least a part of the binder being a water-soluble polymer and another part a water dispersible binder, and the fibrous sheet or web being produced by wet forming. By means of the invention, the fibers of the composite structure can be recovered and recycled by equipment conventionally used in the paper and paperboard industry.

Abstract: A wet wipe is provided. The wet wipe includes a sheet formed from non-plastic materials. The sheet has a weight of between 40-90 gsm. The sheet comprises a blend of wood pulp fluff fiber and cellulosic staple fibers and/or cross-linked curly pulp. The wood pulp fluff fiber has a weight percent of between 60-95%. The cellulosic staple fibers and/or cross-linked curly pulp has a weight percent of between 40-5%. A plastic free binder is included. The sheet has an effective wet strength of at least 150 grams per linear inch in the cross-direction.

Abstract: There is provided a fiber body manufacturing method including an accumulating step of forming the web by accumulating a material containing fibers and starch or dextrin on the first transport belt by a dry method; a transport step of transporting the web by peeling off a first surface of the web from the first transport belt, and by bringing a second surface of the web, which is a surface opposite to the first surface peeled off from the first transport belt, into contact with the second transport belt; a water-applying step of applying the water to the web which is in contact with the first transport belt or the second transport belt; and a heating step of heating the web by bringing the heating section into contact with the web peeled off from the second transport belt, and forming a fiber body by binding the fibers with the starch or dextrin, in which the web peeled off from the second transport belt is directly supplied to the heating section.

Abstract: A fire-resistant retail product packaging, such as sleeves, pouches, wraps, and the like, that is capable of containing fires of high intensity for products such as lithium-ion batteries. The fire-resistant paper comprises Kraft paper with a preferred eight of 40 to 60 pounds/3,000 ft2, and a fire-resistant ink applied to each side of the Kraft paper. The fire-resistant ink includes an acrylic resin, a dispersant, and a boron compound, and optionally, talc and a molybdate compound. When heated, the fire-resistant ink preferably converts the Kraft paper into a non-combustible and heat shielding substance.

Abstract: The present invention is to provide a means that can reduce coloring of secondary alcohol alkoxylate. The present invention relates to a method for producing a secondary alcohol alkoxylate which comprises feeding an alkylene oxide from a plurality of positions in a tubular reactor to a secondary alcohol to react them, wherein the alkylene oxide is fed in such a manner that a feeding interval is extended and a feeding rate is increased each with a specific proportion.

Abstract: The present invention provides a wet-laid tissue product comprising regenerated cellulose fibers that can provide 25 percent or less of the total weight of the wet-laid tissue product. The regenerated cellulose fibers can have a linear density of less than about 1.5 dtex and a fiber length of less than 6.0 mm. The wet-laid tissue product can provide improvements in softness at a given strength. The products may also have improved wet physical properties when regenerated cellulose fibers are presented, such as improved wet tensile strength and wet burst. The improvement in wet physical properties does not come at the expense of dispersibility, as the products are readily dispersible and, in some instances, have improved dispersibility compared to similar products prepared entirely from conventional wood pulp fibers.

Abstract: Disclosed herein are embodiments of a composition for use in forming films or coatings that prevent damage in foodstuffs, including plants, fruits, and vegetables. The disclosed compositions comprise a cellulose nanomaterial and can further comprise a nanoscale mineral compound and one or more additional components. Also disclosed are films or coatings made using the disclosed compositions, as well as methods for making the disclosed compositions and methods for using the disclosed compositions.

Abstract: Fibrous structures containing solid additives, and more particularly, fibrous structures containing two or more regions that comprise different average weight % levels of solid additives and methods for making same are provided.

Abstract: A method of making a fibrous sheet includes providing a first furnish including a primary pulp having papermaking fibers, the papermaking fibers (i) having a weight-weighted average fiber length between about two and seven tenths millimeters and about three millimeters, (ii) a coarseness of about sixteen milligrams per one hundred meters or lower, and (iii) being at least eighty percent of the papermaking fibers of the first furnish, forming a nascent web having at least two layers, one of the at least two layers being (i) a surface layer of the nascent web and (ii) formed from the first furnish, dewatering the nascent web to form a dewatered web, applying the surface layer of the dewatered web to the outer surface of a Yankee drum of a Yankee dryer, and drying the dewatered web with the Yankee dryer to form a fibrous sheet.

Abstract: The present invention provides a through-air dried tissue product comprising regenerated cellulose fibers that can provide 25 percent or less of the total weight of the through-air dried tissue product. The regenerated cellulose fibers can have a linear density less than about 1.5 dtex and a fiber length of less than 6.0 mm. The through-air dried tissue product can provide improvements in softness at a given strength.

Abstract: Quaternary ammonium compound compositions and more particularly quaternary ammonium compound compositions including greater than 25% by weight of a quaternary ammonium compound, methods for making same, fibrous structures employing same, and methods for treating fibrous structures with same are provided.

Abstract: A microfibrous cellulose aggregate containing microfibrous cellulose having an average fiber width of 2 nm to 50 nm and a liquid compound including at least one of water or an organic solvent. The content of the microfibrous cellulose is from 6 mass % to 80 mass % per the mass of the entire microfibrous cellulose aggregate, and the content of the liquid compound is at least 15 mass % per the mass of the entire microfibrous cellulose aggregate.

Abstract: A process for the production of acetylated wood elements, a cooling system and a wood acetylation plant are described. A process for the production of acetylated wood elements comprises acetylating wood elements and cooling the acetylated wood elements wherein the cooling comprises supplying liquid water to the acetylated wood elements to provide wetted wood elements and exposing the wetted wood elements to a gas flow.

Abstract: A multi-ply through air dried structured tissue having a bulk softness of less than 10 TS7 and a lint value of 5.0 or less. Each ply of the tissue has a first exterior layer that includes a wet end temporary wet strength additive in an amount of approximately 0.25 kg/ton and a wet end dry strength additive in an amount of approximately 0.25 kg/ton, an interior layer that includes a first wet end additive comprising an ionic surfactant, and a second wet end additive comprising a non-ionic surfactant, and a second exterior layer.

Abstract: Treatment fluids and associated methods for treating a subterranean formation. An example method includes introducing a treatment fluid into a wellbore penetrating the subterranean formation. The treatment fluid includes a competitive metal binder selected from the group consisting of polyamino polyether methylene phosphonic acid, hydoxyethylamino-di(methylene phosphonic acid), and a combination thereof; a polymer capable of forming a polymer-metal complex; and an aqueous fluid. The method further includes contacting a metal ion with the treatment fluid after introduction of the treatment fluid into the wellbore and binding the metal ion with the competitive metal binder.

Abstract: Provided is a method for producing a chemically modified cellulose fiber with which fibrillation can be performed along with sulfation reaction. The method for producing a chemically modified cellulose fiber includes a step (a) of treating a cellulose fiber with sulfamic acid to allow a cellulose fine fiber which is a constituent of the cellulose fiber to react with the sulfamic acid, thereby substituting some of hydroxyl groups of cellulose with a substituent represented by a structural formula (1) below (where M represents a monovalent to trivalent cation), and a step (b) of performing fibrillation simultaneously with the step (a).

Abstract: The present invention provides compositions comprising cellulose fibers and cellulose ester fibers and wet laid articles made from the compositions, as well as wet laid processes to produce these compositions. More specifically, the present invention provided compositions comprising cellulose fibers and cellulose acetate fibers and wet laid articles made from these compositions as well as wet laid processes to produce these compositions. The present invention also relates to developing a composition, process, wet laid product, or articles exhibiting any one of many desired benefits. Specifically, a wet laid process comprising a process that allows the quantity of water removed from a web passed through press rolls is increased relative to a web made from a 100% cellulose comparative composition.

Abstract: A method for producing a floorboard having a topside veneer includes forming a multilayer body which includes a starting carrier plate, a plurality of veneers placed on the starting carrier plate so that a gap is formed between neighboring ones of the veneers, a resin layer including a resin provided between the starting carrier plate and the veneers, and a balancing layer arranged on a bottom side of the starting carrier plate; joining the starting carrier plate, the resin layer, the veneers and the balancing layer by pressing the multilayer body in a press; separating the multilayer body into individual boards between the neighboring veneers in a region of the gap; profiling the individual boards at side borders of the boards; and providing the individual boards with joining means.

Abstract: The sheet manufacturing apparatus includes a fibrillating unit that fibrillates a raw material including fibers in a gas, an additive supply unit that supplies an additive, a mixing unit including a first rotating unit that mixes a fibrillated matter fibrillated by the fibrillating unit and the additive supplied by the additive supply unit, a depositing unit that deposits a mixture mixed by the mixing unit, a web forming unit including a mesh belt that transports a deposited material deposited by the depositing unit and a suction mechanism that sucks the deposited material to the mesh belt, and a control unit that changes granularity of a surface of the sheet by controlling at least one of a supply amount per unit time from the additive supply unit, a rotation velocity of the first rotating unit of the mixing unit, and a suction force of the suction mechanism.

Abstract: The present invention relates to the use of a surface-reacted calcium carbonate as an anti-blocking agent in polymer(s) containing compositions, wherein the surface-reacted calcium carbonate is a reaction product of natural ground or precipitated calcium carbonate with carbon dioxide and one or more H3O+ ion donors in an aqueous medium, wherein the carbon dioxide is formed in situ by the H3O+ ion donors treatment and/or is supplied from an external source, an anti-blocking agent comprising surface-reacted calcium carbonate or a combination of surface reacted calcium carbonate and mineral material, a method for controlling the blocking of polymer(s) containing compositions, a polymer(s) containing composition comprising surface reacted calcium carbonate or a combination of surface reacted calcium carbonate and mineral material, a coating composition comprising such polymer(s) containing composition, as well as a substrate coated with such coating composition.

Abstract: Zwitterionic surfactant compounds and their use in connection with absorbent paper manufacture in debonder and softener formulations. An exemplary surfactant is an imidazolinium compound of formula: wherein X is SO3, R1 is a hydrocarbyl spacer group having a chain length of from 2-6 carbon atoms, R2 is a hydrocarbyl group having from 8 to 22 carbon atoms; and R3 is an alkenylamidoalkyl moiety having from 8 to 30 carbon atoms.

Abstract: A process for continuously treating a stream of water (for example, a stream of oil and gas well wastewater) to remove contaminants therefrom is provided. The process comprises: a) testing the stream of water to determine if it contains biological matter and, if necessary, removing biological matter from the stream; b) testing the pH level of the stream and, if necessary, adjusting the pH level of the stream; c) separating the stream of water into a sludge discharge stream and a separator unit effluent stream; d) separating the separator unit effluent stream into a steam discharge stream and a concentrated brine stream; and e) separating the concentrated brine stream into a chlorine gas stream and at least one of a sodium stream and a calcium stream. A corresponding system is also provided.

Abstract: This invention relates to a sheet material comprising fiber and nano-microscale organic fibrillated filler, wherein the nano-microscale organic fibrillated filler comprises microfibrillated cellulose and starch granule in such a way that the microfibrillated cellulose is dispersed with starch granule, and the nano-microscale organic fibrillated filler has starch granule at least 15 wt %.

Abstract: The present invention is directed to a two-ply tissue paper including a polyol-containing moisturizer and having excellent softness, smoothness, and strength. In various embodiment, the two-ply tissue paper of the present invention has a basis weight of 16.0 to 25.0 g/m2 per ply, a two-ply paper thickness of 145 to 180 ?m, a dry tensile strength of 120 to 200 cN/25 mm in a lateral direction, a dry tensile strength of 275 to 450 cN/25 mm in a longitudinal direction, a wet tensile strength of 60 to 130 cN/25 mm in the lateral direction, a difference of 40 cN/25 mm or more between the dry tensile strength in the lateral direction and the wet tensile strength in the lateral direction and a value of (wet tensile strength in lateral direction)/(dry tensile strength in lateral direction) of 0.60 to 0.75, and an elongation percentage of 13.0 to 18.0% in the longitudinal direction.

Abstract: In various embodiments, the present invention provides a moisturizing tissue containing a polyol that has excellent strength while still providing a moist feeling and smoothness peculiar to the moisturizing tissue. The tissue paper has a basis weight of 15.6 to 19.1 g/m2, a paper thickness of 115 to 150 ?m, a content of the polyol of 17.0 to 22.0 % by mass, a moisture content of 10% by mass or more, a dry tensile strength of 310 to 410 cN/25 mm in a longitudinal direction, a dry tensile strength of 120 to 160 cN/25 mm in a lateral direction, a wet tensile strength of 55 to 90 cN/25 mm in the lateral direction, and compression energy WC of 5.0 to 6.5 gf·cm/cm2 under a load of 50 g/cm2 using a KES test method.

Abstract: The process includes pretreating the biomass with a first basic solution such as sodium hydroxide and mechanically altering the fibers to provide a fluidized biomass. The fluidized biomass is then subjected to high frequency pulses and shear forces without denaturing the individual components of the biomass. The biomass is then subjected to compressive force to separate a first liquid fraction from a first fractionated biomass. The first fractionated biomass may again then be subjected to the same high frequency pulses and shear forces as previously, particularly if there are hemicellulose and/or sugars still present in the first fractionated biomass. Compressive forces are used to separate a second liquid fraction from a second fractionated biomass. The second fractionated biomass is subjected to oxidation such as with hydrogen peroxide at a pH of 8 to 12.

Abstract: The present invention relates to a wet strength, fibre-containing substrate having adjustable wet strength and wetness strength, wherein the substrate comprises fibres, at least one binder, at least one amphoteric amine and at least one moistening agent, wherein the at least one binder comprises or consists of at least one polysaccharide having at least one acid group-containing residue, and wherein the at least 1 moistening agent comprises at least 1 organic component selected from the group consisting of aliphatic alcohols, aliphatic ethers, aliphatic esters, monosaccharides, oligosaccharides and mixtures thereof, preferably aliphatic alcohols, aliphatic ethers and mixtures thereof, and also, furthermore, to a method for producing the wet strength, fibre-containing substrate, and to use thereof.

Abstract: A filter composition effective in reacting with airborne or gaseous organic impurities, such as formaldehyde. The filter composition is formed from a filter substrate, such as for example, a fibrous web or extruded carbon block, treated with tris-(hydroxymethyl) aminomethane. The unexpected result of this combination is a longer lasting filter capable of adsorbing organic airborne impurities for a much longer period of time than an untreated filter media of the same type. The removal of formaldehyde is presented as an illustrious example.

Abstract: Personal care and household care compositions comprising a conditioner and rheology modifier based on a cationic galactomannan or cationic xyloglucan having cationic degree of substitution comprised between 0.01 and 3, free from (3-chloro-2-hydroxypropyl)trimethyl ammonium chloride and free from (2,3-epoxypropyl) trimethyl ammonium chloride.

Abstract: The invention discloses a method to enable the efficient use of surfactants in web forming of a cellulose containing material, e.g. in the making of paper or paperboard. The method comprises the addition of microfibrillated cellulose (MFC) or nanocrystalline cellulose (NCC) to the white water in a web-forming process in order to form complexes with surface active agents. The formed complexes are at least partly recycled to the process. This enables the producer to have control over the concentration of surface active agents in the system.

Abstract: The present application discloses a sizing method for making paper. An alkenyl succinic anhydride (ASA) is added to a papermaking process. An aluminum salt is added in one or more process steps during the papermaking process. Preferably, the aluminum salt is an aluminum salt which can generate free aluminum ion in aqueous solution. The sizing method of the present application enhances the usage efficiency of a sizing agent and the aluminum salt, as well as provides paper having a high moisture content.

Abstract: A method of measuring hydrophobic contaminants in a pulp slurry or a papermaking system includes the steps of providing an aqueous paper mill sample, filtering the aqueous paper mill sample to produce a filtrate comprising particles, and collecting an image of the particles in a measured volume of the filtrate. The method also includes the steps of analyzing the image to determine a size and morphology of the particles in the measured volume of filtrate, identifying spherical particles having a size of from about 1 micron to about 20 microns in the measured volume of filtrate, and quantifying a number of the spherical particles having the size of from about 1 micron to about 20 microns in the measured volume of filtrate. This method is useful for papermakers for deposition diagnostics, prevention, and contaminant control treatment optimization.

Abstract: The present invention relates to a release aid that includes at least one succinic anhydride derivative for use in a papermaking process. For example, the release aid of the present invention is particularly useful for use in a paperweb creping process. The present invention also relates to a paperweb creping method that includes a release aid comprising at least one succinic anhydride.