Glycol Ether Amines

Industrial Solvents Handbook GLYCOL ETHER AMINES... 

Table 14.85 Properties of Various Glycol Ether Amines (47)...

The hydrophilic parts can contain oxygenated groups (glycol ether types) or amines. The first detergents used amine and phosphoric acid salts or... 

Sodium Borohydride. Sodium borohydride [16940-66-2] is a thermally stable, white crystalline soHd that decomposes in vacuo above 400°C. The heat of formation is —192 kJ/mol (—45.9 kcal/mol). NaBH is hygroscopic and absorbs water rapidly from moist air to form a dihydrate that decomposes slowly to sodium metaborate and hydrogen. It is soluble in many solvents including water, alcohols, Hquid ammonia and amines, glycol ethers, and dimethyl sulfoxide. 

Water-dispersible resins contain carboxyhc groups which are neutralized using base or amine compounds. This solubilizes the resin in solution and also promotes pigment wetting. Film formation occurs by the evaporation of volatiles foUowed by cross-linking through ambient cure oxidative reactions or elevated temperature reactions. Solvents, most commonly glycol ethers, are used to promote film formation and improve film quahty. 

Poly glycols (Carbowaxes) Amine, Nitrile, Ether, Ketone, Ester, Alcohol, Aromatics, 100-200... 

Uses. Nearly half the ethyl alcohol produced in petrochemical plants (not the stuff fermented for human consumption) is used as a chemical intermediate in the manufacture of ethyl acrylate, ethyl amines, ethyl acetate (when you pop the cap on nail polish remover, you smell ethyl acetate), ethylene chloride, glycol ethers, acetaldehyde, and acetic acid. However, you will see in the chapters on acetaldehyde and acetic acid, there are now more competitive routes than those based on ethyl alcohol. 

On prolonged storage, glycol ethers have been shown to form peroxy compounds which can adversely affect the dyes normally used in glass cleaners. Morpholine, Ammonia, or other volatile amines may be used in place of the Monoethanolamine. 

Ng [2,3] prepared bioerodible copoly(ortho esters) consisting of the Step 2 product with monomethyl polyethylene glycol ether termini and 1,4-cyclohex-anedimethanol and either an a-hydroxy carboxylic acid, (II), or A -methyl-di-ethanol amine (III), for use as bioerodible matrices for the sustained release of biologically active agents. Other dioxalane bioerodible analogues were prepared by Ng [4] in an earlier investigation. 

Most paints used in the household today are water-based products. Significant quantities of paints, primers, and brush cleaners are washed down the drain during cleanup following painting. Water-based paints contain numerous toxic chemicals. These include pigments (many with heavy metals), biocides, glycol ethers, binders, amines, acrylate, and other polymer monomers, surfactants, aliphatic and aromatic hydrocarbons alcohols, ketones, and esters. I36,37 ... 

Aliphatic hydrocarbons Ammonia Chlorine Butanes Glycol ethers Hydrochloric acid Methylene chloride Monoethanol amine Oxalic acid Phosphoric acid Sodium hydroxide Sodium metasilicate Sulfuric acid Surfactants Tetrachloroethylene 1,1,1-Trichloroethane... 

About 75% of the n-butyraldehyde generated is converted into 2-ethylhexanol, which is almost completely consumed as a phthalate ester, e.g., in plasticizers for PVC. The remainder of the butyraldehydes are either used as such for chemical synthesis, converted to acids or amines, or - more important today - hydrogenated to the butanols which are either directly sold as solvents or are further converted into acrylate esters, glycol ethers, butyl acetate, and butyl amines. 

GLYCOL ETHER (111-46-6) Combustible liquid (flash point 255°F/124°C). Vigorous reaction with strong oxidizers. Incompatible with aliphatic amines, amides, sulfuric acid, nitric acid, caustics, isocyanates. 

Liquid. d 1.0306. mp —78. bp 57. Flash pt <60. Practically insol in water, glycerol- Miscible with benzene, carbon tetrachloride, ethanol, ethylene glycol, ether, ethyl acetate. Reacts with hydroxy compds to form ethers with sulfides, ammonia, amines or metal hypoiodites to give the corresp propargyl compds with aldehydes and ketones to give -acetylenic alcohols. Undergoes isomerization. 

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