Alkenyl succinic anhydride.

Alkenyl Succinic Anhydride (ASA) Alkenyl succinic anhydride (ASA) was added to the agents that would increase the resistance of cellulose fibers to the adsorption of water under neutral/alkaline conditions (at pH’s in the range of 7.5-8.5) in the 1960’s by O. Wurzburg and E. Mazzerella of the National Starch and Chemical Company [1]. @article{Sato2016SurfaceMO, title={Surface modification of cellulose nanofibers with alkenyl succinic anhydride for high-density polyethylene reinforcement}, author={Akihiro Sato and Daisuke Kabusaki and Hiroaki Okumura and Takeshi Nakatani and Fumiaki Nakatsubo and Hiroyuki Yano}, journal={Composites Part A-applied Science and … Alkenyl succinic anhydrides (ASA) have been prepared by ene-reaction of high-oleic Agro-Industrielle UMR 1010. INRA/INP-ENSIACET, Toulouse, France sunflower oil methyl esters with maleic anhydride in a 50% xylene medium. Response surface methodology (RSM) was used to investigate the influence of two factors: reaction temperature and molar ratio ... Alkenyl succinic anhydrides (ASA) are derivatives of succinic anhydrides. One H of the succinic anhydride ring is replaced with an iso- alkenyl chain (C 14 to C 22 ). ASA's are colorless and usually viscous liquids.

The invention discloses a preparation method of alkenyl succinic anhydride. The preparation method comprises the following steps: mixing C16 internal olefin and C18 internal olefin each of which the purity is above 95% to form an internal olefin mixture, wherein the mass ratio of C16 internal olefin to C18 internal olefin is 1: (0.5-3); …The amphiphilicity of octenyl succinic anhydride (OSA)-modified starch is improved due to the introduction of dual functional hydrophilic and hydrophobic groups . Based on its amphiphilicity, OSA-starch is used as an emulsifier and stabilizer in many food or oil-in-water systems, cosmetics, and pharmaceutical products [ 19 – 22 ].

Cationic starch and polyacrylamides for alkenyl succinic anhydride (ASA) emulsification for sizing of cellulosic fibers. Paper is composed of polysaccharides mainly cellulose and carbohydrates. The hydroxyl groups present in cellulose react with various substances added to fibrous slurry. Treating the cellulosic fibers….Alkenyl Succinic Anhydride (ASA) Market Analysis and Latest Trends. Alkenyl Succinic Anhydride (ASA) is a chemical compound used in various industries such as adhesives, sealants, paints, coatings ...

Abstract Alkenyl succinic anhydride (ASA) is widely used in papermaking industry as an internal sizing agent. In situ emulsication of ASA using cati-onic starch is conventionally practiced because of the low shelf life of ASA emulsion. We synthesized Janus particles by surfactant-free seeded polymerization to stabilize ASA emulsion.Alkenyl succinic anhydrides are important specialty chemicals that are used in the paper, oilfield, and fuel additives industries. In this paper we investigate the link between the physical properties of alkenyl succinic anhydrides and the identities of their linear alkyl olefin precursors.The binding mechanisms of two reactive sizing agents, alkenyl succinic anhydride (ASA) and maleated sunflower oil high-oleic (MSOHO), with cellulose were studied. While ASA is produced from olefins out of fossil resources, MSOHO is a green sizing agent based on renewable plant materials. In contrast to common assumptions, that ASA is mostly covalently bound to cellulose, this study showed the ...Films obtained from pristine tree gums are often brittle, hygroscopic, and lack mechanical strength. This study focuses on the chemical modification of gum kondagogu using long-chain alkenyl groups of dodecenyl succinic anhydride (DDSA), an esterifying agent that introduces a 12-carbon hydrophobic chain to the kondagogu structure.The succinic anhydride reaction with proteins is considered to specifically occur at the free amino groups of proteins, hence replacing the amino group (NH 3 +), at neutral pH with NHCOCH 2 CH 2 COO function [55]. A similar mechanism can be considered for alkenyl-substituted succinic anhydride.

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The aim of this work was to prepare octenyl and dodecenyl succinic esters of inulin (Fig. 2) with a degree of substitution (DS) between 0.05 and 2 under mild alkaline conditions by reaction of alkenyl succinic anhydrides (ASA) such as 2-octen-1-ylsuccinic anhydride (OSA), and 2-dodecen-1-ylsuccinic anhydride (DDSA) in aqueous media and aqueous surfactant media, respectively.

The aim of this work was to prepare octenyl and dodecenyl succinic esters of inulin (Fig. 2) with a degree of substitution (DS) between 0.05 and 2 under mild alkaline conditions by reaction of alkenyl succinic anhydrides (ASA) such as 2-octen-1-ylsuccinic anhydride (OSA), and 2-dodecen-1-ylsuccinic anhydride (DDSA) in aqueous media and …Among them, alkenyl succinic anhydride (ASA) is a commonly applied neutral sizing agent, and needs to be prepared as an oil-in-water emulsion before sizing (Guodong Li et al. 2017; Yu et al. 2020). In the traditional emulsifying process, the excessive use of surfactants can facilitate emulsification, but that will have an adverse effect on ...Succinic anhydride MSDS (material safety data sheet) or SDS, CoA and CoQ, dossiers, brochures and other available documents. SDS. CoA. CAS #: 108-30-5 EC Number: 203-570-0 Molar Mass: 100.07 g/mol Hill Formula: C₄H₄O₃. View Products on Sigmaaldrich.com.Alkenyl succinic anhydride (ASA for short) is a basic raw material widely used in light industry and fine chemical industry, is widely applied to lubricating oil, waterproof agent, hardener, drying agent and preservative, is particularly applied to the field of papermaking production by using a reactive sizing agent, has the capability of fast reaction with cellulose, and can greatly improve ...The aim of this work was to prepare octenyl and dodecenyl succinic esters of inulin (Fig. 2) with a degree of substitution (DS) between 0.05 and 2 under mild alkaline conditions by reaction of alkenyl succinic anhydrides (ASA) such as 2-octen-1-ylsuccinic anhydride (OSA), and 2-dodecen-1-ylsuccinic anhydride (DDSA) in aqueous media and aqueous surfactant media, respectively.

Apr 4, 2008 ... This work has shown that a reproducible ASA emulsification with optimal particle size is possible, and well controllable, in the laboratory.2 1. INTRODUCTION Alkenyl succinic anhydrides (ASAs) are used as sizing agents in the paper industry and also find use in the drilling of oil wells and as fuel additives.1,2 ASAs are formed by an Alder-ene reaction of a linear alkyl olefin and maleic anhydride.3 It is widely known that isomerised olefins give ASAs with lower freezing temperatures – ASA from C …Alkenyl Succinic Anhydride (ASA) is a sizing agent used in papermaking to increase the water repellency of paper. Almost 60 years after the introduction of the …Jun 17, 2022 · Alkenyl succinic anhydride (ASA) is widely used in papermaking industry as an internal sizing agent. In situ emulsification of ASA using cationic starch is conventionally practiced because of the low shelf life of ASA emulsion. We synthesized Janus particles by surfactant-free seeded polymerization to stabilize ASA emulsion. The morphology evolution and anisotropic compositions of Janus ... Abstract. Alkenyl succinic anhydrides having a decreased amount of tar and color bodies are made by the reaction of an olefin with maleic anhydride in the presence of a tri-orthoalkylphenyl phosphite and optionally a hindered phenolic antioxidant such as 2,4,6-tri- (3,5-di-tert-butyl-4-hydroxybenzyl) mesitylene.Apr 14, 2023 ... Fenbufen Part 2/3. Here's a quick preparation video. The dehydration of succinic acid to succinic anhydride using acetic anhydride following ...

Cationic starch and polyacrylamides for alkenyl succinic anhydride (ASA) emulsification for sizing of cellulosic fibers. Paper is composed of polysaccharides mainly cellulose and carbohydrates. The hydroxyl groups present in cellulose react with various substances added to fibrous slurry. Treating the cellulosic fibers….

Alkenyl Succinic Anhydride (ASA) is a sizing agent used in papermaking to increase the water repellency of paper. Almost 60 years after the introduction of the chemical in papermaking, scientists still have differing views on how ASA interacts with cellulose. The alkenyl succinic anhydride and derivatives thereof are useful as additives for fuels, lubricating oil compositions, curing agents for epoxy resins, plasticizers, surfactants etc. Alkenyl succinic anhydrides wherein the alkenyl substituent has from about 6 to 18 carbon atoms are of value as a raw material for the production of C 6-C 18 alkyl ... Abstract. Alkenyl succinic anhydrides having a decreased amount of tar and color bodies are made by the reaction of an olefin with maleic anhydride in the presence of a tri-orthoalkylphenyl phosphite and optionally a hindered phenolic antioxidant such as 2,4,6-tri- (3,5-di-tert-butyl-4-hydroxybenzyl) mesitylene.Mar 14, 2022 · Among them, alkenyl succinic anhydride (ASA) is a commonly applied neutral sizing agent, and needs to be prepared as an oil-in-water emulsion before sizing (Guodong Li et al. 2017; Yu et al. 2020). In the traditional emulsifying process, the excessive use of surfactants can facilitate emulsification, but that will have an adverse effect on ... DOI: 10.2115/FIBER.56.334 Corpus ID: 99496439; The reason why the reactive chemical structure of alkenyl succinic anhydride is necessary for efficient paper sizing @article{Isogai2000TheRW, title={The reason why the reactive chemical structure of alkenyl succinic anhydride is necessary for efficient paper sizing}, author={Akira Isogai}, journal={Sen-i Gakkaishi}, year={2000}, volume={56 ...Jun 5, 2003 · Alkenyl succinic anhydride from methyl oleate was isolated by column chromatography and analyzed by IR, 1 H- and 13 C-NMR and MS. The optimal reaction conditions for obtaining the maximum yield of alkenyl succinic anhydride from methyl oleate in the experimental domain (80%) were 210-220 °C and a maleic anhydride/rapeseed oil methyl ester ...

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Alkenyl succinic anhydride (ASA) is a reactive sizing agent that can impart good water repellence to paper by decreasing the wettability of the cellulose fibers. However, ASA can undergo ...

Alkenyl succinic anhydrides (ASA) were prepared by an-ene reaction of n-alkyl (C 1 to C 5) oleates with maleic anhydride. The purified compounds were characterized by FTIR, 1 H NMR, and MS analytical methods to elucidate their structures.Alkenyl succinic anhydride (ASA) sizing is dominating over other sizing processes due to its high reactivity and economy. The shelf life of conventionally used cationic starch (CS) stabilized ASA emulsion is 20-25 min. In our previous study, the ASA emulsion was found to be stable up to 4 h using anionic polyacrylamide (APAM) as …If you have questions about the copyright permission request process, please contact CCC by phone at 978-750-8400. To obtain copyright permission to use excerpts. from this publication in another published work, send your specific request in writing to TAPPI PRESS, 15 Technology Parkway South, Norcross, GA 30348. or by fax to 770-446-6947.The optimal reaction conditions for obtaining the maximal yield (around 95%) of alkenyl succinic anhydride from methyl oleate were 235C, a molar ratio of 1.5, and a reaction lasting 8 h. However ...Alkenyl succinic anhydrides (ASA) were prepared by an-ene reaction of n-alkyl (C 1 to C 5) oleates with maleic anhydride. The purified compounds were characterized by FTIR, 1 H NMR, and MS analytical methods to elucidate their structures. Alkenyl succinic anhydride (ASA) is one of the most prominent paper sizing agents worldwide. Commercial products start from isomerized C16-18 olefins with certain distribution of the double bond along the alkyl chain. This distribution is then found again in the product ASA which renders mechanistic studies on ASA binding to the cellulose surface difficult. For studies on ASA reactivity ... Alkenyl succinic anhydride(ASA) is a popular paper-sizing agent that is generally added to papermaking systems as an aqueous emulsion. Herein, we reviewed the recent work focusing on ASA emulsions stabilized by solid particles. Solid particle-stabilized ASA emulsions generally possess high ASA content and exhibit good sizing performance.DOI: 10.1016/j.ces.2020.116407 Corpus ID: 233528964; Stabilization of the emulsion of Alkenyl Succinic Anhydride (ASA) in water using cellulose nanofibrils @article{Arancibia2021StabilizationOT, title={Stabilization of the emulsion of Alkenyl Succinic Anhydride (ASA) in water using cellulose nanofibrils}, author={Fernando Arancibia and Eduardo Izquierdo and Miguel Pereira}, journal={Chemical ...

Synthesis of alkenyl succinic anhydrides from methyl esters of high oleic sunflower oil. Laboratoire de Chimie. Alkenyl succinic anhydrides (ASA) have been prepared by ene …In the present work, surface modification of CNFs with alkenyl succinic anhydride (ASA) was studied to improve the mechanical properties of CNF-reinforced HDPE. ASA-modified polysaccharides such as waxy maize starch nanocrystals [18], chitin whiskers [19], cellulose whiskers [20], or CNC [21] have been studied during the past few decades. Yuan ...Succinic anhydride, dodecyl-Dodecylsuccinic acid anhydride; 2,5-Furandione, 3-dodecyldihydro-1,2-Tetradecanedicarboxylic anhydride; Alkenylsuccinic anhydrides; R2MH46PZB5; 3-Dodecyldihydro-2,5-furandione; NSC-77128; DDSA;3-Dodecyldihydrofuran-2,5-dione; EINECS 219-880-4; NSC 77128; 2, 3-dodecyldihydro …Succinic Anhydride. 113 Alkenyl succinic anhydrides (extensively used in the papermaking industry as paper sizing agents when manufactured by reaction of maleic anhydride with C14–C22 i-olefins) have been prepared by the ene reaction of the methyl esters of high-oleic sunflower oil with maleic anhydride in a 50% xylene medium.Instagram:https://instagram. dream meanings Surface treatment of nanocellulose (e.g., silane agent, alkenyl succinic anhydride) is an applicable method to moderate nanofiber agglomeration and improve interfacial adhesion [93,94, 98]. In ... map of strip This study focuses on the chemical modification of gum kondagogu using long-chain alkenyl groups of dodecenyl succinic anhydride (DDSA), an esterifying agent that introduces a 12‑carbon ...The alkenyl succinic anhydride and derivatives thereof are useful as additives for fuels, lubricating oil compositions, curing agents for epoxy resins, plasticizers, surfactants etc. Alkenyl succinic anhydrides wherein the alkenyl substituent has from about 6 to 18 carbon atoms are of value as a raw material for the production of C 6-C 18 alkyl ... shopping on wayfair Alkenyl Succinic Anhydride (ASA) is a sizing agent used in papermaking to increase the water repellency of paper. Almost 60 years after the introduction of the chemical in papermaking, scientists ... best ai girlfriend Films obtained from pristine tree gums are often brittle, hygroscopic, and lack mechanical strength. This study focuses on the chemical modification of gum kondagogu using long-chain alkenyl groups of dodecenyl succinic anhydride (DDSA), an esterifying agent that introduces a 12-carbon hydrophobic chain to the kondagogu structure.Hyaluronic acid (HA) of various molecular weights (4000, 14,000, 30,000, 100,000 and 850,000 g/mol) was modified with aryl and alkenyl succinic anhydrides (ASA).The modifications were conducted at pH 8.0–8.5 for 16 h at 25 or 60 °C.The 1 H NMR spectrum of octenyl succinic anhydride modified HA (OSA-HA) was elucidated using … flights from clt to lax Usually, when you get a refund from the IRS, you overpaid on your taxes throughout the year. However, you can still receive more money back than you paid to the IRS in the form of ... guadalupe radio vivo Wood flour was also esterified with a commercial alkenyl succinic anhydride (ASA) (Acha et al., 2003; Marcovich et al., 2005, Fig. 4.6). The FTIR spectrum of the treated sample revealed the usual increase in the intensity of the carbonyl absorption at 1735 cm − 1 , owing to ester formation, and the absence of the anhydride absorption bands at ... wings of glory The Global Alkenyl Succinic Anhydride ASA Market is anticipated to rise at a considerable rate during the forecast period, between 2024 and 2032. In 2022, ...Alkenyl succinic anhydride (ASA) is a viscous polar oil, typically used as a paper sizing agent after being emulsified. ASA and water emulsions stabilized by TiO 2 nanoparticles were prepared by adding the aqueous phase to the oil phase. Catastrophic phase inversion from w/o to o/w or w/o/w has been investigated by monitoring the variation of ...Alkenyl Succinic Anhydride (ASA) is a sizing agent used in papermaking to increase the water repellency of paper. Almost 60 years after the introduction of the chemical in papermaking, scientists still have differing views on how ASA interacts with cellulose. drawings animated Alkenyl succinic anhydride (ASA) is a viscous polar oil, typically used as a paper sizing agent after being emulsified. ASA and water emulsions stabilized by TiO 2 nanoparticles were prepared by adding the aqueous phase to the oil phase. Catastrophic phase inversion from w/o to o/w or w/o/w has been investigated by monitoring the variation of ... ipad backup Alkenyl succinic anhydride (ASA) is commonly used to improve the water resistance characteristics of printing and writing paper in the neutral/alkaline paper-making process. It is a highly reactive sizing agent that can impart liquid repellence to paper by decreasing the wettability of the cellulose fibres ...The alkenyl succinic anhydrides (ASA) are made by heating a mixture of maleic anhydride (MA) and aliphatic olefin at a temperature of about 175°-275° C. The molecular weight of the olefin can vary widely depending upon the intended use of the ASA. paper size ASA have an alkenyl group of about 12-22 carbon atoms. citibank online The global Alkenyl Succinic Anhydride (ASA) market was valued at US$ 240.9 million in 2023 and is anticipated to reach US$ 280.2 million by 2030, witnessing a CAGR of 2.4% during the forecast ...Alkenyl Succinic Anhydride (ASA) Market - Covid-19 Impact and Recovery Analysis: We were monitoring the direct impact of covid-19 in this market, further to the indirect impact from different ... houston texas airfare The URL has moved hereFree PMC article. Abstract. Alkenyl Succinic Anhydride (ASA) is a sizing agent used in papermaking to increase the water repellency of paper. Almost 60 years …Yuan et al. modified cellulose whiskers with less reactive alkenyl succinic anhydride (ASA) and the degree of substitution (DS) value, evaluated on the basis of XPS data, was 0.097 as opposed to 0.0158, determined by elemental analysis . They demonstrated a more adequate determination of surface DS by XPS due to the local …