weight of the produced copolymers divided by weight of the initial monomers. Bulk polymerization of styrene for 20 h reached 42% of conversion with weight average molecular weight of 9,100. In comparison, conver-sions after 20 h copolymerization of reaction me-dium containing 2.6, 3.8, and 5.0 mol % of MA in
Synthesis of Ultrahigh Molecular Weight Poly(styrene-alt-maleic anhydride) in Supercritical Carbon Dioxide Guang-Ming Qiu †, Bao-Ku Zhu †, You-Yi Xu * †, and Kurt E. Geckeler ‡ Institute of Polymer Science, Zhejiang University, 310027, P.R. China, and Department of Materials Science and Engineering, Gwangju Institute of Science and ...
Radical copolymerization of styrene (St) and maleic anhydride (Man) was performed in supercritical carbon dioxide (SC CO2) at 50−80 °C with 2,2'-azoisobutyronitrile as the initiator. A novel, ultrahigh molecular mass St−Man alternative copolymers (Mw > 106) has been synthesized.
Maleic acid or cis-butenedioic acid is an organic compound that is a dicarboxylic acid, a molecule with two carboxyl groups. Its chemical formula is HO 2 CCH=CHCO 2 H. Maleic acid is the cis -isomer of butenedioic acid, whereas fumaric acid is the trans -isomer.
Dogs were fed 60 mg/kg/day maleic anhydride for 990 days. The plasma levels of maleic anhydride were determined. An uptake rate constant of 3.49X10-3/day and an elimination rate constant of 8.32X10-2/day were calculated assuming a one compartment model. According to the model 99% of steady state was reached by day 55 of the study.
Chemsrc provides Furan-maleic anhydride adduct(CAS#:6766-44-5) MSDS, density, melting point, boiling point, structure, formula, molecular weight etc. Articles of Furan-maleic anhydride adduct are included as well.
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Anthracene-maleic anhydride diels-alder adduct | C18H12O3 | CID 138503 - structure, chemical names, physical and chemical properties, classification, patents ...
Reaction of Cyclopentadiene with Maleic anhydride To begin the reaction I added 1.003g of Maleic anhydride to a 25ml Erlenmeyer flask. Next, 4.0mL of Ethyl acetate and 4.0mL of Ligroin (Petroleum ether) were separately poured into the same flask. Finally, 1.0mL of Cyclopentadiene was carefully added to the other substances.
Molecular Weight. 98.06 ... Anhydrid kyseliny maleinove (Czech) cis-Butenedioic anhydride Maleic acid anhydride Maleic anhydride (ACGIH:OSHA) ...
Maleic acid is converted into maleic anhydride by dehydration, to malic acid by hydration, and to succinic acid by hydrogenation. It reacts with thionyl chloride or phosphorus pentachloride to give the maleic acid chloride (it is not possible to isolate the mono acid chloride).
Maleic anhydride 99% Synonym: 2,5-Furandione CAS Number 108-31-6. Empirical Formula (Hill Notation) C 4 H 2 O 3. Molecular Weight 98.06 . Beilstein/REAXYS Number 106909 . EC Number 203-571-6. MDL number MFCD00005518. PubChem Substance ID 24896701
Gantrez™ AN polymers are synthetic, alternating copolymers of methyl vinyl ether (MVE) and maleic anhydride available in a range of molecular weights. Although the anhydride polymers (AN grades) are not directly useable in oral care products, they are used as base polymer for making polymer salts used as bioadhesives in denture adhesive applications.
T1 - Maleic anhydride functionalization of polypropylene with suppressed molecular weight reduction via solid-state shear pulverization. AU - Diop, Mirian F. AU - Torkelson, John M. PY - 2013/7/19. Y1 - 2013/7/19
MAN – Maleic Anhydride – is a low molecular weight, unsaturated, carboxylic anhydride. The clear, colorless molten product is available in rail tank cars, tank trucks, and ISO (intermodal) tank containers. In coating resins MAN. Introduces cure sites for crosslinking in reactive cure coatings like alkyds
Liquid maleic anhydride is available in road tankers and/or tank-containers which are made of stainless steel, which are insulated and provided with heating systems to maintain the temperature of 65-75 °C.
The chemical formula for maleic anhydride is C4H2O3, and its molecular weight is 98.06 g/mol. (2) Maleic anhydride is a colorless to white solid that forms orthorhombic crystals and decomposes in water.(2) Maleic anhydride has an acrid odor, with an odor threshold of 0.32 parts per million (ppm). (5,8)
Maleic Anhydride (MAN) is an intermediate used in several chemical production processes.
Maleic anhydride is known as an excellent dienophile in the Diels-Alder reaction to produce phthalate ester derivatives. These reactions can be extremely violent, as in the case of 1-methylsilacyclopentadiene [J. Organomet., Chem., 1979, 179, c19].
Environmental: Maleic anhydride's fate in soil is unknown. Since it biodegrades in sewage treatment plants and hydrolyzes, it's likely that it will degrade in soil. A combination of these processes should be important. Maleic anhydride released into water will hydrolyze rapidly (half-life 0.37 min) to maleic acid.
molecular weight: 98.058; Maleic anhydride is a widely used basic organic chemicals, and is the third largest anhydride chemicals in the world after acetic anhydride and phthalic anhydride. Maleic anhydride is mainly used to produce unsaturated polyester resin (UPR) and alkyd resin.
The molecular weight and polydispersity of SP measured by gel permeation chromatography were 23.6 kDa and 2.17, respectively, which meant that about 83% of maleic anhydride was reacted with PEI according to the molecular weight of SMA (5500 Da) and PEI (800 Da).
›› Maleic Anhydride molecular weight Molar mass of C2H2(CO)2O = 98.05688 g/mol Convert grams Maleic Anhydride to moles or moles Maleic Anhydride to grams
A potentiometric titration method for estimation of maleic anhydride content in high molecular weight styrene maleic anhydride copolymer was developed. The method involves reaction of maleic anhydride with aniline to convert anhydride to monoacid, which was then titrated with an organic base namely alcoholic tetra-butylammonium hydroxide (TBAOH).
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