Abstract: The present invention relates to cost-effective and environmentally friendly polyester surfactants containing a condensation esterification product of a polyhydric alcohol, a multimeric acid, and at least one polyalkylene glycol for use in flotation deinking under traditional alkaline, reduced alkali, and true neutral deinking conditions. The polyester deinking surfactants of the present invention will effectively exhibit greater selectivity than traditional flotation deinking surfactants. In particular, the polyester deinking surfactants can give better foam control, improved yield, and no loss in ERIC reduction.

Abstract: The present invention provides methods for deinking printed waster paper—particularly methods that use a deinking composition that includes a hydrophobically-modified inorganic particle (“MIP”) to improve ink collection efficiency under traditional alkaline, reduced alkali, and true neutral deinking conditions. Deinking compositions are provided that include a hydrophobically-MIP substrate, a nonionic surfactant, and a fatty acid, or mixtures thereof. The improved ink collection of the present invention can result in deinked pulp of high quality and/or yields that has excellent brightness and effective residual ink concentrations (“ERIC”) values.

Abstract: A composition and method for improving retention and drainage in a papermaking process is disclosed. An unexpected synergistic effect has been observed when certain amounts of a promoter are used in conjunction with a microparticle. Optionally, a flocculent is also used to further improve the observed synergism. The microparticle includes an inorganic anionic or cationic siliceous material. The promoter includes a modified diallyl-N,N-disubstituted ammonium halide polymer. The flocculant includes one or more high molecular weight, water-soluble cationic, anionic, nonionic, zwitterionic, or amphoteric polymers.

Abstract: A method is described controlling enzymatic decomposition of peroxide comprising contacting a composition containing a peroxide decomposing enzyme with an aldehyde functional polymer added in an amount effective to control the enzyme. There also is a method described for bleaching cellulose pulp, such as recycled paper pulp or other pulps, with an aldehyde functional polymer introduced in an amount effective to control peroxide decomposing enzymes present in the pulp being bleached. Paper products containing the aldehyde functional polymer used to control peroxide decomposing enzymes in a bleaching treatment of cellulose pulp are also provided.

Abstract: A process for reclaiming food-contaminated solid waste streams from fast food restaurants, casual dining restaurants, cafeterias, schools, colleges and universities, concession stands, arenas, stadiums, movie theaters, large city street trash bins and other entertainment venues, and other places that offer simple food items for dine in or carry-out that are currently sent to a land fill. The inventive process offers total solid waste reclamation with zero waste water discharge, zero landfill and minor source air emissions, resulting in 100% reclamation and a 100% sustainable process. This process can also be used on solid waste from reclamation centers and manufacturers who currently land fill their waste.

Abstract: The invention relates to a method for reducing the negative effects of adhesive contaminants in the processing of waste paper, wherein an aqueous polymer dispersion comprising one component A and one component B for coagulation and detackification of stickies is added during the processing of waste paper, wherein component A is a homo- and/or copolymer of methyl methacrylate, acrylate and/or styrene and component B is a styrene copolymer having acrylic acid, maleimide and/or maleic acid hydride. The polymer dispersion can optionally comprise another component C, a cationic fixing agent that supports the coagulation of the stickies.

Abstract: The present invention provides a process for deinking printed waste paper comprising the steps of: a) converting the printed waste paper to an aqueous pulp slurry in a pulper, where ink is detached from paper pulp; b) subjecting the pulp slurry to flotation in order to remove hydrophobic contaminants including ink from the pulp slurry, said flotation being carried out in the presence of a deinking chemical additive comprising modified silica obtained by treating hydrophilic silica particles with a hydrophobic organic liquid or modified metal silicate obtained by treating hydrophilic metal silicate particles with a hydrophobic organic liquid or a mixture of such modified silica and modified metal silicate. The present invention increases the yield of the flotation step without affecting the brightness of the flotation accept.

Abstract: An ink dispersion includes an ink vehicle and a colorant dispersed in the ink vehicle. The ink vehicle includes a non-ionic surfactant and a solvent. The non-ionic surfactant has an HLB value ranges from about 5 to about 16, and is chosen from: i) a material represented by one of the formulas R1—O—(OR2)n—H, R1—(OR2)n—OH or R1—C6H4—(OR2)n—OH, wherein: R1 is chosen from a) a linear or cyclic alkyl group including from 3 to 20 carbon atoms, or b) a substituted or non-substituted alkyl group including from 6 to 18 carbon atoms, R2 is chosen from CH2CH2 or CH2CH2CH2, and n is an integer chosen from 2 to 100; or ii) a diester having at least one ethylene oxide repeating unit; or iii) an octylphenol having at least one ethylene oxide repeating unit.

Abstract: This present invention relates to methods for preparing premium or near-premium brightness pulps for towel and tissue applications from fiber sources comprising substantial amounts of lignin-containing pulp and chemical pulp while controlling fines, scale and anionic trash. These methods use alkaline hydroxide in combination with peroxide and oxygen for initial bleaching stages followed by treatment with a peroxide activating agent to convert residual peroxide in the pulp into peracetic acid followed by a final reductive bleaching stage.

Abstract: A composition and method for deinking is disclosed. The composition and method contain an activated magnesium silicate or a magnesium silicate.

Abstract: A composition and method for deinking is disclosed. The composition and method contain an activated magnesium hydroxide or a magnesium hydroxide.

Abstract: Methods and apparatus are provided for exploiting coated paper products such as coated paper cups. End products include biofuels that have a high energy density. The biofuels may be mixed with coal or other fuels and have good binding characteristics. In some embodiments, useful chemicals such as HMF are produced. The methods involve heat treatment at relatively mild temperatures and pressures under acidic conditions.

Abstract: A recording material, containing nonionic surfactants, including: a supporting substrate, a first bottom base coat applied to at least one surface of said substrate, and a second topcoat layer applied over said bottom base coat. The supporting substrate or the bottom base coat includes nonionic surfactants that have HLB values that are inferior to 15. Also disclosed is a method to deink printed waste papers wherein the waste papers contain recording materials, containing nonionic surfactants such as defined herein.

Abstract: Deinking of waste paper is obtained with the use of a hydrophobic kaolin-based deinking composition. The hydrophobic kaolin-based deinking composition is produced by hydrophobizing the kaolin clay and then blending the hydrophobic kaolin-based particles with a deinking surfactant. Separation and removal of ink is achieved either by washing deinking, flotation deinking or combination of these methods.

Abstract: The invention relates to a stabilizing composition comprising following components (A) a polymer having the following formula: wherein R1 is a hydrogen atom or an alkyl group containing 1 to 12 carbon atoms, R2 is —COOM or —CH2COOM, M is a hydrogen atom, an alkali metal ion, an alkaline earth metal ion, an ammonium ion or a mixture thereof, n, m and k are molar ratios of corresponding monomers, wherein n is 0 to 0.95, m is 0.05 to 0.9, and k is 0 to 0.8, and (n+m+k) equals 1, and the weight average molecular weight is between 500 and 20,000,000 g/mol, (B) a chelating agent, (C) a poly-alpha-hydroxyacrylic acid or an alkaline salt thereof or the corresponding polylactone thereof, and (D) optionally a polycarboxylic acid polymer or an alkaline salt thereof. The invention also relates to a process for the treatment of a fiber material.

Abstract: The present invention relates to a stabilizing composition comprising following components (A) a polymer having following formula wherein R1 is a hydrogen atom or an alkyl group containing 1 to 12 carbon atoms, R2 is —COOM or —CH2COOM, M is a hydrogen atom, an alkali metal ion, an alkaline earth metal ion, an ammonium ion or a mixture thereof, n, m and k are molar ratios of corresponding monomers, wherein n is 0 to 0.95, m is 0.05 to 0.9, and k is 0 to 0.8, and (n+m+k) equals 1, and the weight average molecular weight is between 500 and 20,000,000 g/mol, (B) a chelating agent, and (C) an alkaline earth metal compound. The invention also relates to a process for the treatment of a fiber material.

Abstract: The object of the present invention is to provide a process for producing deinked pulp from recovered paper containing stickies while preventing excessive reduction in the size of stickies, lowering the COD of effluents, and producing deinked pulp with a smaller residual ink content. In the ink detachment stage of the process for producing deinked pulp from recovered paper containing stickies, an anhydride of crystalline layered silicate is added, preferably in an amount of 0.1-1.5 weight % of absolute-dry pulp, and a deinking treatment is performed at a pH of 7.0-9.9. In the present invention, the deinking treatment is performed in a weakly alkaline to neutral region which is generally said to be effective in reducing the amount of stickies but less effective in ink detachment and, yet, deinked pulp having a smaller amount of residual ink can be produced.

Abstract: In a method of recycling printed paper, the collector chemical composition used to aid ink removal after pulping of the paper advantageously comprises an aqueous emulsion of a polysiloxane and a delivery aid for the polysiloxane, the delivery aid comprising one of more compounds selected from an alkali metal salt of a fatty acid moiety, and a nitrogenous salt of a fatty acid moiety, and a water-swellable polymer. The collector chemical composition is effective at low concentration, gives good brightness gain, low level of fibre loss, and effluent water low in siliceous material.

Abstract: The invention relates to a process for the treatment of a fibre material comprising the step of contacting the fibre material in an aqueous medium with a chelating agent and a polymer having following general formula wherein R1 is a hydrogen atom or an alkyl group containing 1 to 12 carbon atoms, R2 is —COOM or —CH2COOM, M is a hydrogen atom, an alkali metal ion, an alkaline earth metal ion, an ammonium ion or a mixture thereof, n, m and k are molar ratios of corresponding monomers, wherein n is 0 to 0.95, m is 0.05 to 0.9, and k is 0 to 0.8, and (n+m+k) equals 1, and the weight average molecular weight is between 500 and 20,000,000 g/mol. The invention also relates to a composition comprising a chelating agent and the above polymer.

Abstract: The present invention provides methods for deinking printed waster paper—particularly methods that use a deinking composition that includes a hydrophobically-modified inorganic particle (“MIP”) to improve ink collection efficiency under traditional alkaline, reduced alkali, and true neutral deinking conditions. Deinking compositions are provided that include a hydrophobically-MIP substrate, a nonionic surfactant, and a fatty acid, or mixtures thereof. The improved ink collection of the present invention can result in deinked pulp of high quality and/or yields that has excellent brightness and effective residual ink concentrations (“ERIC”) values.

Abstract: The invention relates to the use of certain lipolytic enzymes such as cutinases and lipases in the manufacture of paper and paper products from recycled paper. Examples of such enzymes are derived from strains of Humicola, Candida, Fusarium and Pseudomonas. By use of these enzymes, the problems relating to the so-called “stickies” derived from waste paper are reduced.

Abstract: The present invention relates to cost-effective and environmentally friendly polyester surfactants for use in flotation deinking. The improved ink collection of the present invention can result in deinked pulp of high quality and/or yields that has excellent brightness and effective residual ink concentration values.

Abstract: The present invention provides methods for deinking printed waste paper—particularly methods that use a deinking composition that includes a hydrophobically-modified inorganic particle (“MIP”) to improve ink collection efficiency under traditional alkaline, reduced alkali, and true neutral deinking conditions. Deinking compositions are provided that include a hydrophobically-MIP substrate, a nonionic surfactant, and a fatty acid, or mixtures thereof. The improved ink collection of the present invention can result in deinked pulp of high quality and/or yields that has excellent brightness and effective residual ink concentrations (“ERIC”) values.

Abstract: [Object] It is to provide a process of manufacturing recycled paper pulp with high efficiency from newspaper (waste paper) or waste printed paper as a raw material, which is disposed and recovered from homes and offices, through a deinking process using a specific surfactant and electrolyzed water.

Abstract: The invention relates to enzymes having xylanase, mannanase and/or glucanase activity, e.g., catalyzing hydrolysis of internal ?-1,4-xylosidic linkages or endo-?-1,4-glucanase linkages; and/or degrading a linear polysaccharide beta-1,4-xylan into xylose. Thus, the invention provides methods and processes for breaking down hemicellulose, which is a major component of the cell wall of plants, including methods and processes for hydrolyzing hemicelluloses in any plant or wood or wood product, wood waste, paper pulp, paper product or paper waste or byproduct. In addition, methods of designing new xylanases, mannanases and/or glucanases and methods of use thereof are also provided. The xylanases, mannanases and/or glucanases have increased activity and stability at increased pH and temperature.

Abstract: The present invention relates to a polymer composition for peroxide bleaching of a cellulosic fiber material, said composition being in the form of a stable aqueous polymer solution obtained by bringing in an aqueous medium a first polymer (A) comprising a partly or totally acidic homopolymer of acrylic acid, methacrylic acid or maleic acid, or a copolymer of acrylic acid and/or methacrylic acid with an unsaturated dicarboxylic acid, into contact with a second polymer (B) comprising a polylactone of a poly-alfa-hydroxyacrylic acid in solid form or as a moist powder or as a slurry, said polymer solution having a pH of at most 5. The invention also relates to peroxide bleaching processes.

Abstract: The present invention provides methods for deinking printed waste paper—particularly methods that use a deinking composition that includes a hydrophobically-modified inorganic particle (“MIP”) to improve ink collection efficiency under traditional alkaline, reduced alkali, and true neutral deinking conditions. Deinking compositions are provided that include a hydrophobically-MIP substrate, a nonionic surfactant, and a fatty acid, or mixtures thereof. The improved ink collection of the present invention can result in deinked pulp of high quality and/or yields that has excellent brightness and effective residual ink concentrations (“ERIC”) values.

Abstract: Formulations for pitch control, and methods of making and using thereof, are described herein. The formulations contains one or more 1,3-selective lipases. 1,3-selective lipases catalyze the hydrolysis of the terminal ester groups in triglycerides leaving the internal ester group intact. The enzyme formulations can contain one or more additives, such as dispersants, metal ions, absorbents, adsorbents, cationic polymers, and combinations thereof. The enzyme formulation is typically applied as a solution to the pulp stock. The enzyme formulations can be applied at any of one or more various points during the pulping and paper manufacturing processes. The use of selective lipase(s) decreases the total concentration of fatty acids in the system, and catalyzes the formation of monoglycerides, which are more effective at dispersing fatty acids than glycerol, the product of non-selective lipases, thereby improving pulp and paper machine runnability and pulp and paper quality.

Abstract: An enhanced method of repulping paper and improving water quality by placing used paper product material in an aqueous solution of dipolar aprotic protophylic solvent, processing it, and recovering recycled pulp based on two physical reactions of the dipolar solvent: first with water from one part of the solvent, and second with cellulosic material from the other part of the solvent. The water reaction involves a rearrangement of hydrogen bonds within the water, improving its reactivity and solvent capacity, and the cellulosic reaction involves dissolution of hemicellulose in a manner which results in reduced fibre loss and improved pulp quality. The net result is more efficient pulping and reduced environmental impact.

Abstract: The object of the present invention is to provide a process for producing deinked pulp from recovered paper containing stickies while preventing excessive reduction in the size of stickies, lowering the COD of effluents, and producing deinked pulp with a smaller residual ink content. In the ink detachment stage of the process for producing deinked pulp from recovered paper containing stickies, an anhydride of crystalline layered silicate is added, preferably in an amount of 0.1-1.5 weight % of absolute-dry pulp, and a deinking treatment is performed at a pH of 7.0-9.9. In the present invention, the deinking treatment is performed in a weakly alkaline to neutral region which is generally said to be effective in reducing the amount of stickies but less effective in ink detachment and, yet, deinked pulp having a smaller amount of residual ink can be produced.

Abstract: The present invention relates to methods and compositions for deinking waste paper, optionally in non-alkaline or low-alkaline systems. Deinking compositions are provided that include a blend of an alkoxylated fatty alcohol and a fatty acid. The compositions may further include a second alkoxylated fatty alcohol. The deinking compositions also may include a first non-alkoxylated fatty acid and optionally a second alkoxylated fatty acid. Cationic derivatives such as cationic polymers also may be added to the deinking blend.

Abstract: Apparatus and method for recovering organic cellulosic fibers from landfill materials (such as post consumer, municipal and industrial waste materials). The apparatus and method selectively introduces waste materials containing organic cellulosic fibers into a size reduction machine. The pre-cleaned waste materials are conveyed to a tank, drum, or tunnel type fiber recovery apparatus. The waste materials are subjected to mechanical and fluid fiberization for a selected period of time to produce useful products, such as cellulosic insulation with a total ash content equal to or less than 10%, as well animal and fowl bedding products that is substantially devoid of moisture content, among other products.

Abstract: The present invention relates to a process for bleaching a cellulosic fibre material with a peroxide compound in an aqueous alkaline medium, comprising a bleaching step wherein: a) a first polymer (A) comprising a homopolymer of acrylic acid, methacrylic acid or maleic acid, or a copolymer of acrylic acid and/or methacrylic acid with an unsaturated dicarboxylic acid, and a solution of a second polymer (B) comprising a poly-alpha-hydroxyacrylic acid or a salt thereof, are added to a cellulosic fibre material, and b) thereafter adding a peroxide compound and an alkaline substance and carrying out the bleaching.

Abstract: Cellulosic or lignocellulosic materials, and compositions and composites made therefrom, are disclosed.

Abstract: The invention relates to a stabilizing composition comprising following components (A) a polymer having following formula wherein R1 is a hydrogen atom or an alkyl group containing 1 to 12 carbon atoms, R2 is —COOM or —CH2COOM, M is a hydrogen atom, an alkali metal ion, an alkaline earth metal ion, an ammonium ion or a mixture thereof, n, m and k are molar ratios of corresponding monomers, wherein n is 0 to 0.95, m is 0.05 to 0.9, and k is 0 to 0.8, and (n+m+k) equals 1, and the weight average molecular weight is between 500 and 20,000,000 g/mol, (B) a chelating agent, (C) a poly-alpha-hydroxyacrylic acid or an alkaline salt thereof or the corresponding polylactone thereof, and (D) optionally a polycarboxylic acid polymer or an alkaline salt thereof. The invention also relates to a process for the treatment of a fiber material.

Abstract: The present invention relates to a process for deinking waste paper comprising treating the waste paper with a peroxide compound in an aqueous alkaline medium in the presence of a first polymer (A) comprising a Ca-binding polymer in the form of a polycarboxylate polymer and a second polymer (B) comprising a poly-alfa-hydroxyacrylic acid or a salt thereof or the corresponding polylactone, said process additionally comprising treating the waste paper with at least one non-ionic surfactant or with at least one combination of a non-ionic surfactant and a fatty acid or a salt thereof to promote ink detachment and/or ink removal.

Abstract: A method is described controlling enzymatic decomposition of peroxide comprising contacting a composition containing a peroxide decomposing enzyme with an aldehyde functional polymer added in an amount effective to control the enzyme. There also is a method described for bleaching cellulose pulp, such as recycled paper pulp or other pulps, with an aldehyde functional polymer introduced in an amount effective to control peroxide decomposing enzymes present in the pulp being bleached. Paper products containing the aldehyde functional polymer used to control peroxide decomposing enzymes in a bleaching treatment of cellulose pulp are also provided.

Abstract: The present invention relates to crepe wadding and a method for manufacturing the crepe wadding wherein after waste cotton products are collected to produce cotton fiber material dried and recycled therefrom, the cotton fiber material is mixed to a pulp fiber material obtained from pulp or recycled paper and the mixture is matured, thereby making the crepe wadding, and to a functional mulching textile having the crepe wadding wherein the crepe wadding is laminated to another crepe wadding or a cotton non-woven fabric and a variety of functional materials are charged into the space formed between the laminated sheets, thereby preventing water and soil from being polluted during the manufacturing and further being utilized in various fields including mulching and environment-friendly organic agriculture according to the kinds of the functional materials charged during the laminating process.

Abstract: The invention relates to alpha amylases and to polynucleotides and polypeptides encoding the alpha amylases. In addition, methods of using the alpha amylases are also provided. The alpha amylases have increased activity and stability at acidic, neutral and alkaline pH and at increased temperatures.

Abstract: A composition and method for deinking is disclosed. The composition and method contain an activated magnesium hydroxide or a magnesium hydroxide.

Abstract: A composition and method for deinking is disclosed. The composition and method contain an activated inorganic mineral.

Abstract: A composition and method for deinking is disclosed. The composition and method contain an activated magnesium silicate or a magnesium silicate.

Abstract: This invention relates to a biological process for deinking of office waste paper, and more particularly the present invention relates to a biological process for deinking of xerographic and inkjet printed paper using a gram-negative coccoid bacterium deposited at the National Institute of Oceanography, Dona Paula, Goa 403 043, India having Accession No. NIO/DI/32 and being deposited at the Agricultural Research Cultural Collection, and International Depository, having Accession Number NRRL B-30638.

Abstract: A method and apparatus are presented for determining the quantity of liquid and solid content in a removal stream of a froth created from a suspension that is generated during a froth flotation operation. Specifically, electrodes are immersed in the froth generated from a suspension having a known quantity of fiber particles, and the conductance of the froth is measured to establish a relationship between the measured conductance and the quantity of fiber particles. The electrodes are then submerged in a froth generated from a suspension having an unknown quantity of fiber particles, and the froth conductance is measured. The quantity of fiber particles in the froth can then be determined from the pre-established relationship between conductance and solid particle content.

Abstract: The present invention provides methods for deinking printed waste paper—particularly methods that use a deinking composition that includes a hydrophobically-modified inorganic particle (“MIP”) to improve ink collection efficiency under traditional alkaline, reduced alkali, and true neutral deinking conditions. Deinking compositions are provided that include a hydrophobically-MIP substrate, a nonionic surfactant and a fatty acid, or mixtures thereof. The improved ink collection of the present invention can result in deinked pulp of high quality and/or yields that has excellent brightness and effective residual ink concentrations (“ERIC”) values.

Abstract: Disclosed is an open flotation de-inking module for recycled paper comprised of a flotation cell having an injector module and air control module used in conjunction to infuse micro air bubbles into pulp slurry to optimize the process of separating ink, clay, stickies and other float able contaminants from the recycled pulp slurry by negatively pressurizing the slurry as it accelerates through the injector drawing air from the air control module saturating the slurry with air bubbles before injection into the flotation cell whereupon the contaminants will adhere to the bubbles as they move to the surface forming a foam that is passively skimmed into reject compartments with the decontaminated pulp channeled from the floatation cell for further processing.

Abstract: Disclosed is a closed floatation conventional de-inking process adopted in the recycled paper processing plants, in which, ink separation and removal constitutes a major task. The specific concerns of this invention are the concept and the equipment for the separation and removal of the ink and ash from the pulp slurry contaminated with ink, clay and stickies.

Abstract: Paper is made from paper stock containing pulp derived from recycled paper fibers by adding to the paper stock, an effective amount of an additive for reducing the deposition of contaminants, the additive one or more silicon containing material(s) selected from the group of: (i) an epoxy and/or glycidoxy functional silane, and/or hydrolysed or condensation reaction products thereof with water (ii) glycidoxy and/or epoxy functional siloxane and/or hydrolysed or condensation reaction products thereof with water (iii) a quaternary ammonium functional silicone polymer, and/or hydrolysed or condensed reaction products thereof with water and/or (iv) a quaternary ammonium functional silicone polymer cross-linked by an organic epoxide and/or hydrolysed or condensed reaction products thereof with water and/or (v) an amino functional silane and/or an amino functional silicone and/or hydrolysed or condensed reaction products thereof with water and/or (vi) an alkyl functional silane and/or hydrolysed or condensed reacti

Abstract: Surfactant penetrant treating solutions and their use in the manufacture of paper products. The surfactant penetrant treating solutions include two types. The first type is an enzymatic surfactant penetrant treating solution, and the second type is a defoaming surfactant penetrant treating solution. The solutions may be used to break down recyclable paper products for use as feedstock in paper manufacturing processes. The solutions may also be used to clean the internal and external components of machinery in a paper manufacturing line.

Abstract: A composition and method for improving retention and drainage in a papermaking process is disclosed. An unexpected synergistic effect has been observed when certain amounts of a promoter are used in conjunction with a microparticle. Optionally, a flocculent is also used to further improve the observed synergism. The microparticle includes an inorganic anionic or cationic siliceous material. The promoter includes a modified diallyl-N,N-disubstituted ammonium halide polymer. The flocculant includes one or more high molecular weight, water-soluble cationic, anionic, nonionic, zwitterionic, or amphoteric polymers.