Ester of polyols

Acetyl, benzoyl, cinnamoyl, and nicotinyl esters of polyols based on the dihyd-roagarofuran framework [cf. (324) etc.] have been established as constituents of... 

Cellulose nitrate in combination (gelation) with nitrate esters of polyols (plus - Stabilisers and plasticizers), e.g. NC/NGL (-> Nitroglycerine) or NC/EDDN (- Ethylenediamine dinitrate). 

IV. Rearrangement of Esters of Polyols in Liquid Hydrogen Fluoride. 169... 

Chem. Descrip. Fatly acid ester of polyol Uses Internal lubricant for rigid PVC for use in inj. molding, extmsion, and calendering food-contact coatings, paper, cellophane, textiles Regulatory FDA 21CFR 175.300, 176.170, 176.180, 177.1200,... 

Loxiol HOB 7111 [Cognis KGa/VPIastics Tech. Cognis/Chems. Group] Chem. Deserp. Fatty acid ester of polyol... 

Shell Oil Co. EB/UV radiation cure of composition comprising a monoalkenyl arene/conjugated diene block copolymer, tackifying resin, and a di-tetra functional acrylate or methacrylate selected from the group consisting of acrylic and methacrylic acid esters of polyols. Improved high-temperature properties and solvent resistance. PSA properties,... 

Esters of polyols (polyalcohols) and higher fatty acids frequently are used as non-ionic emulsifying agents. The sorbitan esters of fatty acids eure well known. They are prepared by esterification of sorbitol with fatty acids at temperatures of at least 190°C, usually at 220-240°C. During the reaction, a substantial portion of the sorbitol (more them 75%)is converted into anhydro-compounds (intramolecular ethers like sorbitan and isosorbide). The products become less hydrophilic due to the foirmation of these anhydro-compounds. 

These are the classic lubricants, derived from natural oils and fats and acting by migrating to the surface. A wide range of fatty acid esters of polyols and other compounds is used as internal lubricants, especially in PVC. Good flow, surface finish and improved clarity can be achieved in most processes, using either compounded or dry blend formulations. According to type, they can improve mould release, melt flow, lubricity, and scratch/scuff resistance and reduce static build-up and wear. 

Description Fatty acid esters of polyol, fatty alcohol ... 

Ethers and esters of polyols, sugar alcohols and carbohydrates. 

The esterification methods used for the sugars (Chapter III) are applicable to the polyols. The preparation and properties of organic and inorganic esters of polyol anhydrides are considered in Chapter VII. Fully esterified derivatives are generally unobtainable by direct esterification with organic acids because internal anhydrides are formed. Partial esters, especially diesters, may be obtained by the use of amounts of benzoyl or p-toluenesulfonyl chlorides insufficient for complete esterification (93),... 

When mixed esters of polyols are prepared using, in part, a dibasic acid, the product is an ester lubricant that is a low polymer. This leads to a high order of resistance to extraction, bloom, or deposition. Pentaerythritol adipate-stearate is used in clear rigid PVC compounds as an efficient multifunctional lubricant, despite its relatively high cost. The corresponding adipate-oleate, a liquid, is more generally used in plasticized compounds in conjunction with mixed metal stabilizers, particularly if the latter are relatively nonlubricating. 

Chem. Descrip. Fatty acid ester of polyol... 

Other sulfated esters of polyols have been suggested as surfactants and have, in fact, been extensively patented. Sulfated monoesters of ethylene glycol and pen-taerythritol have received some attention in that regard. They have not, in general, found much commercial acceptance, probably because of the hydrolytic instability of the ester linkage. 

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