Glucose 3,4,6-triacetate ester

Cellulose triacetate is obtained by the esterification of cellulose (qv) with acetic anhydride (see Cellulose esters). Commercial triacetate is not quite the precise chemical entity depicted as (1) because acetylation does not quite reach the maximum 3.0 acetyl groups per glucose unit. Secondary cellulose acetate is obtained by hydrolysis of the triacetate to an average degree of substitution (DS) of 2.4 acetyl groups per glucose unit. There is no satisfactory commercial means to acetylate direcdy to the 2.4 acetyl level and obtain a secondary acetate that has the desired solubiUty needed for fiber preparation. 

A large number of acetic add esters are important industrially, induding methyl, ethyl, propyl, butyl, amyl, and cetyl acetates glycol mono- and diacelale glyoeTyl mono-, di-, and triacetate glucose pentacetate and cellulose tn-, tetra-, and pentacetate. 

A number of derivatives of cellulose are used commercially. Most of these are compounds in which two or three of the free hydroxyl groups of each glucose unit have been converted to an ester or an ether. This conversion substantially alters the physical properties of the material, making it more soluble in organic solvents and allowing it to be made into fibers and films. Treating cellulose with acetic anhydride produces the triacetate known as Arnel or acetate, used widely in the textile industry. Cellulose trinitrate, also called gun cotton or nitrocellulose, is used in explosives. 

Additives used in final products Plasticizers polyethylene glycol, polypropylene glycol, partial fatty ester, glucose monoester, citrate, adipate and azelate esters, epoxidized soybean oil, acetylated coconut oil, linseed oil, acetyl tributyl citrate, glycerol triacetate, glycerol tripropionate Antistatics ethoxylated fatty amines, polyethylene glycol ester, quaternary ammonium salt Antiblocking diatomaceous earth, talc Slip erucamide ... 

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