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Polypropylene glycol or polypropylene oxide is the polymer (or macromolecule) of propylene glycol. [1] Chemically it is a polyether , and, more generally speaking, it's a polyalkylene glycol (PAG) H S Code 3907.2000.
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 ...
ethylene glycol: 107-21-1 HCOOH: formic acid: 64-18-6 C 5 H 6 O 2: furfuryl alcohol: 98-00-0 C 3 H 8 O 3: glycerol: 56-81-5 CH 3 OH: methanol: 67-56-1 CH 3 N(C 2 H 4 OH) 2: methyl diethanolamine: 105-59-9 CH 3 NC: methyl isocyanide: 593-75-9 C 5 H 9 NO: N-Methyl-2-pyrrolidone: 872-50-4 CH 3 CH 2 CH 2 OH: 1-Propanol: 71-23-8 CH 2 (CH 2 OH) 2: 1 ...
There are a number of variations depending on the starting molecular weight of the polypropylene glycol. [1] They have the formula (C 3 H 6 O) n .C 6 H 10 O 3 [ 2 ] and the IUPAC name is Poly[oxy(methyl-1,2-ethanediyl)],a-(2-oxiranylmethyl)-w-(2-oxiranylmethoxy)- [ 3 ] A key use is as a modifier for epoxy resins as a reactive diluent and ...
Polyols may be classified according to their chemistry. [5] Some of these chemistries are polyether, polyester, [6] polycarbonate [7] [8] and also acrylic polyols. [9] [10] Polyether polyols may be further subdivided and classified as polyethylene oxide or polyethylene glycol (PEG), polypropylene glycol (PPG) and Polytetrahydrofuran or PTMEG.
Atactic polypropylene can also be produced selectively using metallocene catalysts, atactic polypropylene produced this way has a considerably higher molecular weight. [12] Atactic polypropylene has lower density, melting point and softening temperature than the crystalline types and is tacky and rubber-like at room temperature.
Propylene, also known as propene, is an unsaturated organic compound with the chemical formula CH 3 CH=CH 2. It has one double bond, and is the second simplest member ...
Low molecular weight poly-alpha-olefins are useful as synthetic lubricants such as synthetic motor oils for vehicles and can be used over a wide temperature range. [ 8 ] [ 10 ] Even polyethylenes copolymerized with a small amount of alpha-olefins (such as 1-hexene , 1-octene , or longer) are more flexible than simple straight-chain high-density ...
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