Polyol glycerol

Multihydroxyl containing monomeric or oligomeric p-cyclodextrins (PCD) such as those attained by grafting with glycidyl ethers of protected polyols (glycerol and pentitols) appeared rather promising components for their amphiphilic character, connected to the presence of an hydrophobic pocket and an external hydrophilic shell with an amplified number of hydroxyl groups. 

Hydrogenolysis. C-C and C-O bond breaking by hydrogenolysis of different polyols (glycerol, xylitol, erythritol and sorbitol) has been investigated by Montassier et Predominantly ruthenium and copper-based... 

Glycerol is a hygroscopic, nonvolatile, and viscous substance that shows special benefit as a humect-ant in comparison to liquid and crystalline polyols. Glycerol has been used as an effective moisturizer and humectant in cosmetic products and is recognized as an over-the-counter skin protectant.73... 

Polyol — Glycerol-based poly(oxypropylene) poly(oxyethylene) polyol, 3500 mol.wt. 

Polyol-Glycerol-based poly(oxypropylene) poly(oxyethylene) polyol capped with (ximary hydroxyl groups, 6000 mol.wt. Isocyanate - modified TDl... 

FIGURE 1 Molecular formulas of some sweet molecules, representative of the major natural classes carbohydrates (sucrose), polyols (glycerol, sorbitol), amino acids (glycine, tryptophan), peptides (aspartame, monatin). 

The starter polyol (glycerol, trimethylolpropane) is mixed with an aqueous solution of KOH (40-50% concentration) or with solid KOH (85-90% purity) in reactor 1. The water from the catalyst solution and from the equilibrium reaction with KOH is eliminated from the reaction system by vacuum distillation at 110-130 °C ... 

Incidentally, by a series of oxidation reactions on propylene, a very useful polyol (glycerol) can be derived. The latter serves mainly in polyfunctional thermosets such as alkyds that imdergo cross-linking. 

Fats are triesters of the polyol glycerol. They are good at delivering flavors and provide food with a pleasing texture. When we eat fats, they are metabolized when needed as an energy source, or stored for later use when carbohydrates are no longer available as an energy source. 

Non-ionic anti-static agents are the most important group, comprising ethoxylated alkylamines or amides, fatty acid esters, and esters or ethers of polyols. Glycerol monostearate (GMS) and ethyloxylated amines (EA) make up more than 50% of the total classical anti-statics market. They are mainly used in polyolefins and styrenics. There is a further class of non-ionics based on amides that overcomes the corrosiveness of EA, which can harm packaged goods. 

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