([C.sub.4][H.sub.4][O.sub.3], AR) at the purity 98.0% was supplied by Shanghai Titan Scientific Co., Ltd.
Fujioka, "Synthesis and characterization of biodegradable hydrogels based on starch and succinic anhydride
," Carbohydrate Polymers, vol.
To a solution of compound 2 (150 mg, 0.35 mmol) in dried pyridine (10 ml) was added succinic anhydride
(160 mg, 1.60 mmol).
In world practice, maximum application for obtaining EES matrixes has found the sorbitan monooleate (SMO) and products, obtained on the basis of polyisobutylene succinic anhydride
When Schiff bases 3a-h was reacted with succinic anhydride
, it undergoes a cycloaddition reaction.
(Xi'an, China); stannous octoate and caprolactone were purchased by Sigma Corporation; succinic anhydride
, tosyl chloride, and polyethylene glycol (4000) were purchased from Tianjin Guangfu Chemical Institute; 4-dimethylaminopyridine, Nhydroxysuccinimide, and N,N'-dicyclohexyl carbodiimide were purchased from GL Biochem (Shanghai) Ltd.
Maleic anhydride (MAn) (98%), succinic anhydride
(ScAn) (98%), and diisopropanolamine (DiPA) (98%) were provided by Fluka, Germany.
Chitosan, 85% deacetylated with a molecular weight of approximately 2, 70,000 Da (Central Institute of Fisheries Technology, Cochin, India), succinic anhydride
, Trinitro benzene sulphonic acid, (Sigma-Aldrich Chemicals Co, USA), Human Insulin (400 IU/ml) kindly provided by USV Ltd.
However, polypropylene with 5- to 45-wt% maleic anhydride can be prepared by first reacting terminally unsaturated polypropylene chains with maleic anhydride to give the polypropylene chain a single unsaturation and a terminal succinic anhydride
To improve the emulsion stability and ASA sizing efficiency, we prepared a new cationic corn starch using esterification with OSA (octenyl succinic anhydride
Adding [eta]-octenyl succinic anhydride
(nOSA) in the modification process of C*EmTex enables it to interact with both water and oil and C*EmTex retains its stability for over six months.
Figure 1 illustrates the reaction of cyclic anhydride (after grafting maleic anhydride is converted into succinic anhydride
) with end amino or hydroxyl groups of fiber polymers.