Glycols lacquers

CH3CH2OCH2CH2OH. A colourless liquid with a pleasant odour b.p. 135 C. Manufactured by heating ethylene oxide with ethanol and a catalyst, or by treating ethylene glycol with diethyl sulphate and sodium hydroxide. Used extensively as a solvent in nitrocellulose lacquers. 

This is a particularly troublesome competing reaction when the olefin oxide, eg, ethylene oxide, produces the more reactive terminal primary hydroxy group. Glycol ethers are used as solvents ia lacquers, enamels, and waterborne coatings to improve gloss and flow. 

Butyl glycol ethers, the largest volume derivatives of -butyl alcohol used ia solvent appHcations (10), are obtained from the reaction of 1-butanol with ethylene oxide. The most important of these derivatives, 2-butoxyethanol, is used principally ia vinyl and acryHc paints as well as ia lacquers and varnishes. It is also employed ia aqueous cleaners to solubilize organic surfactants. 2-Butoxyethanol [111-76-2] has achieved some growth at the expense of the lower alkoxyethanols (ie, methoxy and ethoxyethanol) because of 2-butoxyethanol s lower toxicity. 

PET waste has been used in the manufacture of terephthalic electroinsulation lacquers. Here PET is heated in a mixture of a triol and glycol at temperatures of 230-260°C followed by catalytic transesterification and distillation of low-molecular-weight products of degradation until a polyester with the required softening temperature (ca. 60-100°C) is obtained. 

Uses. About 60% of the MA produced is used to make unsaturated polyester and aikyd resins, which are formed by reaction of MA with glycols. Polyester resins are used in the fabrication of glass fiber reinforced parts. Applications include boat hulls, automobile body parts, patio furniture, shower stalls, and pipe. Aikyd resins are mostly used in coatings (paint, varnish, lacquers, and enamels). MA also is widely used as a chemical intermediate in the manufacture of plasticizers and dibasic acids (fumaric, maleic, and succinic). About 15% of MA production goes into the manufacture of viscosity index improvers and dispersants used as additives in lube oils. Several agricultural chemicals are based on maleic anhydride, the best known being Malathion. 

Oxidative Stability of Carboxylated Polyesters. The polyesters which were extended with dianhydrides are those in Table I which were soluble in the lacquer solvents. Of these, theoretical considerations indicate that T50I(NPG) should be the most oxidatively and thermally stable because it is the only one with a completely aromatic acid component (terephthalic and isophthalic), and the glycol component has the stable neopentyl structure. When K-l polycarbonate films containing 5% of this polyester extended with PMDA were heated in a forced-air oven at 200°C, the film life (time to brittleness when creased) was not lowered appreciably (compared with a control containing no carboxylated polyester). The incorporation of 5% of the similar carboxylated T50H(NPG)... 

With the exception of the blue copper phthalocyanine derivatives, these products are azo dyes that are soluble in polar solvents such as alcohols, glycols, esters, glycol ethers, and ketones. Dyes soluble in alcohols and esters are used in protective lacquers for the transparent coating of metal (aluminum) foils and other materials, such as wood (greening lacquers) in flexographic inks for the printing of metal foils, cellophane, and paper as well as for the coloration of cellulose esters, celluloid, and poly(vinyl acetates), and, in the office supplies sector, for... 

The earliest binders were those which were already well known, either in adhesives or paints. They included corn syrup, glycerol, ethylene glycol and dextrose (all dispersed in water), asphalt-based varnish (in naphtha), and silicone varnish (in xylene). The range of binders which has been studied has since been extended enormously, to include lacquers, polymers, soluble salts, fused salts, fusible oxides and fluorides, ceramics and metals, and a number are listed in Table 11,1. 

The telomeric aliphatic polyesters were produced by polycondensation based on adipic acid and hexamethylene glycol in various stoichiometric amounts to generate polyesters of different end group functionality. The polyesters of different molar mass and corresponding reference samples were synthesized at the Center for Macromolecular Chemistry, Berlin, Germany. These types of polyesters are widely used as lacquers and precursors for the production of several important polyurethanes. 

Ethyleneglycol Ethylether Acetate, Glycol Monoethylether Acetate or "Ceilosoive" Acetate, CH COO.CHg.CHa.OC Hjj mw 132,16 colorless liq with mild ether-like odor sp gr 0.9748 at 20/20°, njj 1,4030 at 25 fr p -61.7° bp 156.3 , H P 135°F sol in w (20%) and miscible with ale, eth, acet and aromatic hydrocarbons can be prepd by treating ethyleneglycol monoethylether with acetyl chloride. Its toxicity is discussed in Ref 3, p 313. It is used as solvent for NC, oils resins removes varnish and retards blushing in lacquers... 

Ethylene glycol mono- -butyl ether (EGBE) is a widely used solvent present in many surface coatings, lacquers, enamels, varnishes, varnish removers, inks, and latex paints. It is also used in metal cleaning formulas, commercially available household cleaners, and herbicide components. 

Glycol ethers are extensively used in industrial applications as solvents for the manufacture of lacquers, varnishes, resins, printing inks, and textile dyes as antiicing additives in brake fluids and as gasoline additives. In addition, they are used in consumer products such as latex paints and cleaners. 

Propylene glycol is commonly used to make antifreeze and deicing solutions for cars, airplanes, and boats to make polyester compounds and as solvents in the paint and plastics industries. It is used as a substitute for ethylene glycol mono-alkyl ethers in all-purpose cleaners, coatings, inks, nail polish, lacquers, latex paints, and adhesives. It is also used to create artificial smoke or fog used in fire-fighting training and in theatrical productions. 

Workers occupationally exposed to mixtures of styrene and ethylene glycol in the paint and lacquer industry have been found to have significantly elevated blood plasma levels of malonaldehyde and 4-hydroxynonenal. 106 Styrene and ethylene glycol act synergistically to elevate the concentrations of these two aldehydes which are implicated in carcinogenesis. I107-109 ... 

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