• us5104487a papermaking using cationic starch

    US5104487A Papermaking using cationic starch

    The present invention is directed to a paper having improved properties, a process of producing the paper, and compositions used in the process of producing the paper. The invention generally comprises using a cationic starch in combination with a naturally anionic polysaccharide gum.

  • papermaking using cationic starch and naturally anionic

    Papermaking using cationic starch and naturally anionic

    1992-04-14· Papermaking using cationic starch and naturally anionic polysacchride gums . United States Patent 5104487 . Abstract: The present invention is directed to a paper having improved properties, a process of producing the paper, and compositions used in the process of producing the paper. The invention generally comprises using a cationic starch in combination with a naturally anionic

  • papermaking an overview sciencedirect topics

    Papermaking an overview ScienceDirect Topics

    This chapter also covers various topics such as: application requirements for starch, dispersion of starch, environmental aspects of starch, starch analysis in paper, and use of starch in papermaking furnish, for surface sizing of paper, as a coating binder, as adhesive in paper conversion, and in newer specialty papers.

  • starch in papermaking chemigate

    Starch in papermaking Chemigate

    Moreover, it was proven that the starch adsorption onto pulp fibers takes place within seconds. In accordance with Nature’s laws, this adsorption can be enhanced by combining cationic and anionic molecular species. The papermakers have known this for a long time that is the reason behind the high demand for Chemigate’s cationic starch

  • carrageenan as a dry strength additive for papermaking

    Carrageenan as a dry strength additive for papermaking

    Thus far, most studies focused on the use of synthetic polymers, starch or terrestrial plant gums in papermaking [1–5]. As a gum from marine plants, carrageenan used in papermaking has been reported rarely. Carrageenan is a natural, sulfated polysaccharide extracted from red algae.

  • surface sizing with cationic starch: its effect on paper

    Surface sizing with cationic starch: its effect on paper

    Surface sizing with cationic starch: its effect on paper quality and papermaking process HAK LAE LEE, for the paper fibers than the anionic starch and would therefore be expected to yield a

  • filler modification for papermaking with cationic starch

    Filler modification for papermaking with cationic starch

    The combined use of a cationic polymer and an anionic polymer to modify fillers may provide an alternative approach to improving the use of mineral fillers in the paper industry. Download PDF. Full Article. Filler Modification for Papermaking with Cationic Starch and Carboxymethyl Cellulose: A Comparative Study. He Yang, Li Qiu, Xueren Qian, and Jing Shen* The use of mineral fillers in

  • cationic starch

    Cationic Starch

    Mini-Encyclopedia of Papermaking Wet-End Chemistry Additives and Ingredients, their Composition, Functions, Strategies for Use. CATIONIC STARCH. Composition: The repeating unit of starch is glucose, having a carbohydrate monomer composition of C6H12O6. In the polymer each unit has three -OH groups, and the units are linked together with

  • cationic starch the papermaking bible

    Cationic Starch The Papermaking Bible

    There are two types of starch used in paper making, Cat-ionic wet end starch, and oxidized starch. Wetend Starch Cookers (Cationic maize starch) Wetend starch is modified using a derivatized quaternary ammonium compound to add a cat-ionic charge to the starch. This allows the starch to naturally bond with the anionic fibers, Fillers and fines (all anionic). In a way cat-ionic

  • cationic starch pulp paper mill

    Cationic starch pulp paper mill

    2013-03-10· Benefit of Cationic Starch in Paper mill Industry: Cationic starch enhances paper strength, water drainage, retention, improve paper quality; reduced dusting, linting and size addition; greater control of paper making process hence less paper web breaks and improve paper machine runnability as well as productivity. Cationic starch also allowed

  • starch in the paper industry sciencedirect

    Starch in the Paper Industry ScienceDirect

    Cationic potato starch has a natural source of anionic charge due to its phosphate content. In recent years, waxy corn starches, which consist entirely of amylopectin, have been modified for use as cationic or amphoteric agents for papermaking and surface sizing. Electrokinetic effects that produce flocculation and retention are controlled by the zeta potential of the suspended phase. 67 In

  • (pdf) carrageenan as a dry strength additive

    (PDF) Carrageenan as a dry strength additive

    Carrageenan as a dry strength additive for papermaking. Article (PDF Available) in PLoS ONE 12(2):e0171326 · February 2017 with 363 Reads How we measure 'reads' A

  • what you need to know about starch in papermaking.

    What you need to know about starch in papermaking.

    2005-08-01· What you need to know about starch in papermaking. Link/Page Citation Starch application in papermaking dates back to the invention of paper itself 2000 years ago, when starch was applied to paper for a stronger, smoother writing surface. For mineral filler containing papers, starch is the highest volume raw material after water, fiber, and fillers.

  • us5071512a paper making using hectorite and cationic

    US5071512A Paper making using hectorite and cationic

    Addition of hectorite and a cationic starch to the furnish in a paper making operation improves the retention of filler material and the quality of the paper. US5071512A Paper making using hectorite and cationic starch Google Patents Paper making using hectorite and cationic starch Download PDF Info Publication number US5071512A . US5071512A US07

  • filler modification for papermaking with cationic starch

    Filler Modification for Papermaking with Cationic Starch

    As an attempt to improve the use of fillers in papermaking, filler modification with the combination of cationic starch and carboxymethyl cellulose was preliminarily explored in this mini-study. This concept was compared with filler modification with either cationic starch or carboxymethyl cellulose. The combination of cationic starch with

  • papermaking using cationic starch and naturally anionic

    Papermaking using cationic starch and naturally anionic

    The present invention is directed to a paper having improved properties, a process of producing the paper, and compositions used in the proc

  • starch for surface sizing tongaat hulett starch

    Starch for surface sizing Tongaat Hulett Starch

    Starch in Papermaking . Surface sizing starch • Paper makers use native starch which is converted in-situ for the surface sizing application using alpha amylase enzymes • The viscosity develops during the cooking and the enzymes assist in reducing the final cooked starch viscosity . Batch Enzyme Conversion Agitator Steam Reactor CaCO 3 Enzyme Water Starch • Fill Reactor with 1 st Water

  • patents by inventor alan j. schellhamer justia

    Patents by Inventor Alan J. Schellhamer Justia

    Papermaking using cationic starch and naturally anionic polysacchride gums Patent number: 5104487 Abstract: The present invention is directed to a paper having improved properties, a process of producing the paper, and compositions used in the process of producing the paper.

  • effect of the starch source on the performance of cationic

    Effect of the Starch Source on the Performance of Cationic

    “Synthesis of cationic waxy starch,” BioResources 10(1), 922-931. 922 Effect of the Starch Source on the Performance of Cationic Starches having Similar Degree of Substitution for Papermaking using Deinked Pulp Jin Liu, Rendang Yang, and Fei Yang* Cationic waxy corn starch was prepared from waxy corn starch with 2,3-

  • thomas e. taggart inventions, patents and patent

    Thomas E. Taggart Inventions, Patents and Patent

    Thomas E. Taggart has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • patents by inventor alan j. schellhamer justia

    Patents by Inventor Alan J. Schellhamer Justia

    Papermaking using cationic starch and naturally anionic polysacchride gums Patent number: 5104487 Abstract: The present invention is directed to a paper having improved properties, a process of producing the paper, and compositions used in the process of producing the paper.

  • starch

    Starch

    Oxidated starch has improved biodegradability, i.e. it degrades much faster than conventional starch. Anionic starches are often used as a rheology modifier, thickening agent, flocculants, and emulsion stabilizers, sizing agents, paper binders and coating agents, particulalry for food products. Starch Plastics (Thermoplastic Starch)

  • starch pulp paper mill

    Starch pulp paper mill

    What is Starch Starch is a natural carbohydrate polymer. The molecular formulae of starch is (C 6 H 10 O 5) n.Mainly starch is used in paper mill to improve dry strength and surface.

  • paper chemicals

    Paper chemicals

    To enhance the paper's strength, cationic starch is added to wet pulp in the manufacturing process. Starch has a similar chemical structure as the cellulose fibre of the pulp, and the surface of both the starch and fibre are negatively charged. By adding cationic (positive charged) starch, the fibre can bind with the starch and thus also

  • process of making paper ciba specialty chemicals

    PROCESS OF MAKING PAPER Ciba Specialty Chemicals

    2002-10-30· Papermaking using cationic starch and naturally anionic polysacchride gums: Claims: 1. A process for making paper comprising providing a thin stock suspension of cellulosic fibres, mixing into the suspension (a) a water soluble binder and (b) a water soluble cationic material, then flocculating the suspension by mixing into the suspension an anionic retention aid, draining the flocculated

  • international starch trading: paper.

    International Starch Trading: Paper.

    Starch was important for both sizing and coating of paper, when Gutenberg invented his printing technique in 1450. The history of starch in papermaking is 6000 years old as old as the printed word itself. Starch is used in papermaking from the wet end to the size press. It is used in coating and as calender starch. It is preferable used

  • effect of the starch source on the performance of cationic

    Effect of the starch source on the performance of cationic

    In addition, with the use of cationic waxy corn starch, anionic trash in the slurry could be better removed. Download PDF. Full Article. Effect of the Starch Source on the Performance of Cationic Starches having Similar Degree of Substitution for Papermaking using Deinked Pulp. Jin Liu, Rendang Yang, and Fei Yang* Cationic waxy corn starch was prepared from waxy corn starch with 2,3

  • how to choose anionic, cationic polyacrylamide in the

    How to choose anionic, cationic polyacrylamide in the

    The new type of water treatment agent, polyacrylamide, sewage treatment andwater supply in many occasions, anionic polyacrylamide and cationicpolypropylene matched than using a polyacrylamide alone produced a very significant and synergistic effect, the ability of PAM to reduce the surface tension of Si can be far greater than the same

  • papermaking bleaching and washing britannica

    Papermaking Bleaching and washing Britannica

    Papermaking Papermaking Bleaching and washing: The use of calcium and sodium hypochlorites to bleach paper stock dates from the beginning of the 19th century. In the early days of sulfite pulp manufacture, a single-stage treatment of pulp at low consistency, using calcium hypochlorite (chlorinated lime), satisfied most requirements. This simple bleaching treatment, however, is not

  • dissolved and colloidal substances (dcs) / trash

    Dissolved and Colloidal Substances (DCS) / Trash

    Mini-Encyclopedia of Papermaking Wet-End Chemistry Additives and Ingredients, their Composition, Functions, Strategies for Use. ANIONIC DISSOLVED AND COLLOIDAL SUBSTANCES. Composition: "Anionic trash" is one of the popular names used to describe a wide range of anionic dissolved polymeric and colloidal materials. Another common name is "DCS

  • advances in papermaking wet end chemistry application

    Advances in Papermaking Wet End Chemistry Application

    Chapter 2 Handling and dilution of papermaking additives 2-1 Introduction 2-1-1 Product safety 2-1-2 Spill and waste management 2-1-3 Definitions 2-2 Starch 2-2-1 Starch Types 2-2-2-1 Native starch 2-2-1-2 Cationic starch 2-2-1-3 Anionic starch 2-2-1-4 Amphoteric starch 2-2-1-5 Other types of starch

  • carrageenan as a dry strength additive for papermaking

    Carrageenan as a dry strength additive for papermaking

    effect. Thus far, most studies focused on the use of synthetic polymers, starch or terrestrial plant gums in papermaking [1–5]. As a gum from marine plants, carrageenan used in paper-making has been reported rarely. Carrageenan is a natural, sulfated polysaccharide extracted from red algae. In addition to

  • efficacy of carbohydrate polymers in filler

    Efficacy of carbohydrate polymers in filler

    Cellulosic fibers used for papermaking are the natural car-bohydrate based polymers which are bonded together through the phenomenon of hydrogen (H–O–H) bonding in the pres- ence of water molecules. Other carbohydrate polymer, starch, is a traditional wet-end additive; due to its low cost and ability to increase the inter-fiber bonding in paper, it has been com-monly used in papermaking

  • surface sizing with cationic starch: its effect on paper

    Surface Sizing with Cationic Starch: Its Effect on Paper

    Furthermore, oxidized starches act as anionic trash in the broke recycling process. To solve the problems associated with oxidized starches, cationic starches were prepared and the effects of cationic starch on paper properties and papermaking processes were investigated. Both laboratory research and mill evaluation were carried out and

  • application of cationic starch with high degree

    Application of Cationic Starch with High Degree

    cationic starch with low degree of substitution has a strong adsorption to the filler and fiber in the wet end in papermaking, and once it is adsorbed, it is hard to be separated, and the water filter function is excellent too. However, for the high yield wastepaper making has many anionic impurities, the effect of cationic starch

  • effect of the starch source on the performance of cationic

    Effect of the Starch Source on the Performance of Cationic

    In general, the physical strengths of the paper were improved significantly with an increasing dosage of cationic starches. Cationic waxy corn starch was superior in terms of enhancing the physical properties of paper. In addition, with the use of cationic waxy corn starch, anionic

  • international starch trading: paper.

    International Starch Trading: Paper.

    Starch was important for both sizing and coating of paper, when Gutenberg invented his printing technique in 1450. The history of starch in papermaking is 6000 years old as old as the printed word itself. Starch is used in papermaking from the wet end to the size press. It is used in coating and as calender starch. It is preferable used

  • how to choose anionic, cationic polyacrylamide in the

    How to choose anionic, cationic polyacrylamide in the

    The new type of water treatment agent, polyacrylamide, sewage treatment andwater supply in many occasions, anionic polyacrylamide and cationicpolypropylene matched than using a polyacrylamide alone produced a very significant and synergistic effect, the ability of PAM to reduce the surface tension of Si can be far greater than the same

  • papermaking process, history, & facts britannica

    papermaking Process, History, & Facts Britannica

    Papermaking, formation of a matted or felted sheet, usually of cellulose fibers, from water suspension on a wire screen. Paper is the basic material used for written communication and the dissemination of information. In addition, paper and paperboard provide materials for hundreds of

  • recent advances in cationic and anionic polysaccharides

    Recent Advances in Cationic and Anionic Polysaccharides

    Díaz-Moscoso A, Le Gourriérec L, Gómez-García M, Benito JM, Balbuena P, Ortega-Caballero F (2009) Polycationic amphiphilic cyclodextrins for gene delivery: synthesis and effect of structural modifications on plasmid DNA complex stability, cytotoxicity, and gene expression.

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