Gums and Resins

Triaceiin is about 90% glycerol triacetate and 10% diacetate. Used as a plasticizer for lacquers and as a solvent for certain gums and resins. 

Pentachloroethane is a good solvent for cellulose acetate, certain cellulose ethers, and for natural gums and resins, but its high toxicity has discouraged these uses. Pentachloroethane is still used as an intermediate in some tetrachloroethylene processes. 

Most gums and resins, natural or artificial, when used in the paint, varnish, or plastic industries, are not ground veiy fine, and hammer or cage mills will produce a suitable product. Typical performance of the di attrition mill is given in Table 20-25. Roll crusners will often give a sufficiently fine product. 

The third reason for opposition lay in the nature of many of the polymeric materials then known. Not oidy were they apparently ill-characterised, but they were also frequently non-crystalline, existing as gums and resins. Just the sort of unpromising media, in fact, from which dextrous organic chemists had become used to extracting crystalline substances of well characterised physical... 

Stauffer, K.B. in Handbook of Water-Soluble Gums and Resins Davidson, R.L., Ed. McGraw-Hill, New York, 1980, pp. 11/1-11/31. 

Robert L. Davidson Ed., Handbook of Water-Soluble Gums and Resins Stach and Its Modifications, by M. W. Rutenberg, McGraw-Hill Book Comp, New York, 1980 Chapter 22,ISBN 0-07-015471-6. 

Guiseley, K.B., Stanley, N.F. and Whitehouse, P.A. (1980) Handbook of Water-Soluble Gums and Resins (ed R.L. Davidson), McGraw-Hill Book Company, New York. 

Many gums and resins that ooze out of the trees also behave like plastic. Sealing Wax when warmed becomes plastic can be impressed with a seal. Glass and clay are also plastic material of mineral origin. By early nineteenth century, man had learned to mould many articles from natural gums and resins and make protective films of varnish from Shellac. 

Uses Solvent for nitrocellulose, gums, and resins roll-coating inks, varnishes, lacquers, stains, and enamels starting material for synthesizing methyl isobutyl ketone insect repellent ore flotation. 

Greenwald HL, Luskin LS (1980). In Davidson RL (ed) Handbook of water-soluble gums and resins. McGraw-Hill, New York, p 17... 

F. N. Howes, Vegetable Gums and Resins, Chronica Botanica, Waltham, Mass., 1969. 

For tablet-like confections and pharmaceuticals, sucrose is one of the most common of coating materials. It is transparent, but can be made opaque, and makes an excellent film-like coating. Gums and resins are... 

Important physical properties of cyclohexanol and cyclohexanone are shown in Table I. Cyclohexanol is miscible in all proportions with must organic solvents, including [hose customarily used in lacquers. It dissolves many oils, waxes, gums, and resins. 

Solvent for fats, waxes, gums, and resins pharmaceutical salves and lotions lubricaling-oil additives detergents and emulsifiers textile antistatic and finishing agents plasticizers nonionic surfactants and cosmetics. See also Detergents and Plasticizers. 

This is a cosmopolitan family with several members important as timber, gums, and resins as well as ornamentals. 

Cottrell, I. W., and Kovacs, P. (1980). Alginates. In Handbook of Water-soluble Gums and Resins, Davidson, R. L. (Ed.), pp. 2-1 -2-43. McGraw-Hill, New York. 

---