Diglycerol

Eyeglass frames made of cellulose acetate plasticized with diglycerol esters do not exhibit opaqueness at the frame-lens junction with polycarbonate plastic lenses (146,147). 

Diglycerol 20-120° Water, alcohols, amines, esters, and aromatic hydrocarbons... 

By the enzymatic esterification of diglycerol with lauric acid, the corresponding monolaurate ester is obtained [84]. This is an important industrial reaction for the cosmetic, pharmaceutical and feed industries, since this ester is used as biodegradable non-ionic surfactant. In recent years, the synthesis of this and other polyglycerols with fatty acids has attracted growing interest in industry, leading also to a demand for enantiomerically and isomerically pure products. 

Organic synthesis 12 [OS 12] Esterification of diglycerol with lauric add with... 

Neutral gangliolipids from Thermoplasma acidophilum were separated by PTLC, and their tentative structures were characterized by the combination of GC, H-NMR, and FAB-mass spectrometries [91]. The lipophilic portion of the neutral glycolipid was composed of caldarchaeol (dibiphytanyl-diglycerol tetraether), and the sugar moieties of the glycolipids were composed of glucose. 

Table 11.1 Selectivity (%) among the individual isomers in the diglycerol class (s,s coupling of two secondary alkanols p,p coupling of two primary alkanols in glycerol) (after [29]). For the synthesis of authentic standards of pure diglycerol isomers see [30],...

Chen, J., Dickinson, E. (1999b). Effect of monoglycerides and diglycerol esters on viscoelasticity of heat-set whey protein emulsion gels. International Journal of Food Science and Technology, 34, 493-501. 

Di(/3,y-di hydroxy propyl)-ether Trinitrate or Dipropylol-ether Tetronitrate. See Tetra-nitrodlglycerol, under Diglycerol... 

Diglycerol Diglycerin Diglyceryl Ether Diglyceryl Alcohol Bis dihydroxy propyl oxide or 3,3 -Oxy-di( 1,2-propanediol) (CA nomenclature) [called Diglycerin Glycerin-1-(2.3-dihydroxy-propylather) or Bis-(2.3-dihydroxy-propyl)-ather in Ger],... 

Its prepn and properties are described in Naoum (Ref 15, pp 199 202) and in Vol 5 of Encycl under Diglycerol, pD126l-L... 

Temperatures below 12°C are not usually used, since crystallization of nitroglycerine could take place. Lower temperatures (e.g. 5-7°C) can be applied only when a mixture of glycerine with glycol or diglycerol is nitrated and if there exists no fear that the mixture of esters resulting from the reaction can freeze. In factory practice, nitration is performed mainly at temperatures of about 20-25°C or at 25-30°C. The temperature is measured by means of at least two thermometers, immersed in the vessel at different depths. 

By nitrating diglycerine diglycerol tetranitrate, also called tetranitrodiglycerine or simply nitrodiglycerine , is obtained ... 

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