Cellulose hydroxy alkylated

Klug ED. Some properties of water-soluble hydroxy alkyl celluloses and their derivatives. / Polym Sci 1971 36(Part C) 491-508. 

Poly(alkyl cyanoaaylate) Polydysine) derivatives Polydactic acid) Polydactide-co-glycolide) Poly(P-hydroxy butyrate) Ethyl cellulose Poly(alkyl methacrylate) Polydactic add) Polydactide-co-glycoUde) Poly(l -caprolactone) Cellulose acetate phthalate Poly(alkyl methacrylate) Ethyl cellulose Polydactic acid) Polydactide-co-glycolide) Albumin Casein Gelatin... 

Hydroxy alkyl Hydroxyethyl cellulose Ethylene oxide... 

The rate of acetylation of 0-(hydrox3Tnethyl)cellulose (and other hydroxy compounds) by mixtures of carboxylic acids and their anhydrides has been found to increase greatly in the presence of trifluoroacetic acid. The acceleration is very much less with mono- and tri-chloroacetic acids, presumably because they form unsymmetrical anhydrides which are less effective acylating agents than acyl trifluoroacetates. The exceptional acylating power of the latter anhydrides is shown by their use in the synthesis of alkyl aryl ketones from polyalkylbenzenes, phenyl ethers, furan, and thiophene under mild conditions. The principle has been extended to include acids... 

CrodaceL [Croda Inc. Croda Chem. Ltd.] Alkyl dimonium hydroxy yl cellulose conditioner improving foaming and imparting body fiv skin and hair care prods. 

Figure 4. Phase transfer catalyzed hydrophobe alkylation of hydroxy ethyl cellulose...

The rates of acetylation and methylation were influenced by the configuration of the secondary hydroxy-groups and by the conformation of the hexosyl unit. Physicochemical measurements (sorption, heat of solvation, etc.) were used to establish the relation between changes of conformation of the hexosyl units and the polysaccharide s structure. The influence of additives on the activation or acetylation of cellulose has been studied only alcohols accelerated the acetylation of cellulose, depending on the solvent used. This effect is possibly due to the catalytic action of an alkyl sulphuric acid formed from the alcohol and adventitious sulphuric acid in the medium. 

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