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Propylene glycol methyl ether (PGME or 1-methoxy-2-propanol) is an organic solvent with a wide variety of industrial and commercial uses. [3] Similar to other glycol ethers, it is used as a carrier/solvent in printing/writing inks and paints/coatings. It also finds use as an industrial and commercial paint stripper.
Glycol ethers are designated "E-series" or "P-series" for those made from ethylene oxide or propylene oxide, respectively.Typically, E-series glycol ethers are found in pharmaceuticals, sunscreens, cosmetics, inks, dyes and water-based paints, while P-series glycol ethers are used in degreasers, cleaners, aerosol paints and adhesives.
Estimates on the prevalence of propylene glycol allergy range from 0.8% (10% propylene glycol in aqueous solution) to 3.5% (30% propylene glycol in aqueous solution). [ 70 ] [ 71 ] [ 72 ] The North American Contact Dermatitis Group (NACDG) data from 1996 to 2006 showed that the most common site for propylene glycol contact dermatitis was the ...
Propylene glycol methyl ether acetate (PGMEA, 1-methoxy-2-propanol acetate) is a P-type glycol ether used in inks, coatings, and cleaners. It is sold by Dow Chemical under the name Dowanol PMA, [ 3 ] by Shell Chemical under the name methyl proxitol acetate, [ 4 ] [ 5 ] and by Eastman under the name PM Acetate.
There is a difference in the mixing ratio, depending on whether it is ethylene glycol or propylene glycol. For ethylene glycol, the mixing ratios are typically 30/70 and 35/65, whereas the propylene glycol mixing ratios are typically 35/65 and 40/60. It is important that the mixture be frost-proof at the lowest operating temperature. [24]
Di(propylene glycol) methyl ether is an organic solvent with a variety of industrial and commercial uses. [2] [3] It finds use as a less volatile alternative to propylene glycol methyl ether and other glycol ethers. The commercial product is typically a mixture of four isomers. [4]
Propylene glycol methyl ether, an organic solvent Postgraduate Medical Education and Training Board , a UK medical training organization Topics referred to by the same term
The process involves the transesterification of the triglycerides to give methyl esters which are then hydrogenated to produce the fatty alcohols. [4] Higher alcohols (C 20 –C 22) can be obtained from rapeseed oil or mustard seed oil. Midcut alcohols are obtained from coconut oil (C 12 –C 14) or palm kernel oil (C 16 –C 18).