Succinic anhydride derivatives, effect

A series of castor oil-based ester derivatives were prepared by the esterification of castor oil with acid anhydrides such as phthalic, maleic and succinic anhydrides. The effect of different concentrations of castor oil and its esters on the growth activities of the sugar beet pathogens Rhizoctonia solani and Sclerotium rolfsii was studied by determining the percentage... 

Acid-functionalized polybutadienes are most effective with fillers such as calcium carbonate and aluminum and magnesium hydroxides but are not as effective with silicas and other silicates. As with the succinic anhydride derivatives discussed above, it is assumed that the anhydride functional polymers react with the filler surface by... 

Reduction. Heterogeneous catalytic reduction processes provide effective routes for the production of maleic anhydride derivatives such as succinic anhydride [108-30-5] (26), succinates, y-butyrolactone [96-48-0] (27), tetrahydrofuran [109-99-9] (29), and 1,4-butanediol [110-63-4] (28). The technology for production of 1,4-butanediol from maleic anhydride has been reviewed (92,93). 

The complete schemes of the reactions to preparing chemically modified ligno-cellulose derivatives containing free carboxylic groups by reaction of babassu coconut mesocarp with succinic, phthahc, or maleic anhydrides in the absence of solvent are shown in Figure 5.11. The effectiveness of these biopolymers for apphca-tion to real samples of sugarcane spirits reflected in using only 1.0 g 1" to reduce the copper to a value lower than S.Omg H for aU sorbents. 

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