Polyethylene Glycol PEG

Depending on polymerization conditions, PEG termini may consist of hydroxyl groups or may be selectively functionalized. Commercially available PEG is produced through anionic polymerization of ethylene oxide to yield a polyether struc- 

---

Ketoprofen (SIMS), hydroxypropylmethylcellulose E5 (HPMC, t =2%, 5mPas, Dow Chemical), glyceryl monostearate (Precirol, Gattefosse), Eudragit E 30 D (Rhom Pharma), Polyethylene glycol 400 (PEG 400, Merck) and cellulose acetate phthalate (CAP, Ambrochim) were used directly without any prior purification. 

Bindra, D. S., T. D. Williams, and V. J. Stella. 1994. Degradation of O-6-Benzylguanine in aqueous polyethylene glycol 400 (PEG 400) solutions Concerns with formaldehyde in PECPfliaftn Res 11 1060-1064. 

Bindra DS, Williams TD, Stella VJ. Degradation of 06-benzylguanine in aqueous polyethylene glycol 400 (PEG 400) solutions concerns with formaldehyde in PEG 400. Pharm Res 1994 11 (7) 1060-1064. 

Sets A and C were applied as mixtures prepared from equal weight parts of each of the contaminants. In sets B and D, the mixtures had to be diluted in a ratio 1 5 with polyethylene glycol 400 (PEG 400). This was done to reduce vapour pressure and the agressiveness of set B and D compounds, because these compounds are sorbed to a relatively high degree into the PET matrix thus swelling the material. 

The water-soluble organic solvents in commercially available solubilized oral formulations are polyethylene glycol 400 (PEG 400), ethanol, propylene glycol, glycerin, and Transcutol HP. The solvent Transcutol is purified diethylene glycol monoethyl ether and is a powerful solubilizer that is used in various European products. 

To determine trace components in arsenic trichloride the inlet portion of the column was filled with 15% of tricresyl phosphate on Chromosorb W [47]. In this portion arsenic trichloride was completely retained as a result of the formation of a stable complex with tricrysyl phosphate. The trace components were separated in the remainder (main portion) of the column packed with 10% of polyethylene glycol 400 (PEG-400). 

Trimethylene carbonate (TMC) and glycolide (G) were purchased from Boehringer Ingelheim Chemicals, Inc. (Virginia). Polyethylene glycol-400 (PEG-400) was purchased from Sigma-Aldrich (Missouri). Modified/stabilized methoxypropyl cyanoacrylate tissue adhesive (MS-MPC) was prepared at Poly-Med, Inc. (South Carolina). 

A -Aroyl-A -substituted thiourea derivatives have been prepared from reaction of aroyl isothiocyanate with amines under solid-liquid phase transfer catalysis condition using polyethylene glycol-400 (PEG-400) as catalyst. Reaction of isothiocyanates with lithiated chiral secondary amines has provided chiral thioureas (Scheme 40). °... 

Under the assumption of bimolecular termination, the reaction diffusion parameter R (equation (4.2)) was determined for the bulk photopolymerization of multifunctional (meth)acrylates [I, 3, 6, 17, 481. It was found that for methacrylates at the plateau level, R was in the order of 2 1 moP [6] and for acrylates R was 3-5 1 moP [I7J. In general, reduction of network cross-linking density by co-polymerization with a difunctional reactive diluent (2-hydroxyethyl methacrylate (HEMA), octyl methacrylate) [3] increased the values of R due to increased mobility of the polymerization system until a plateau is reached. The addition of an inert diluent (polyethylene glycol 400 (PEG 400) [3, 6] or hydrogenated monomers [25. 53]) to a flexible monomer of low viscosity did not change R,... 

Instrumentation. Aerosol generation, dilution, and measurement systems using particulates (corn oil, polyethylene glycol 400 [PEG 400], dl-2-ethyl hexyl sebacate [DEHS] or sodium chloride) as test aerosols shall be used for quantitative fit testing. 

Another convenient strategy for the synthesis of 3,5-diaryl-1,2,4-thiadiazoles is the oxidative dimerization of arylthioamides by using 2,4,6-trichloro-l,3,5-triazine and dimethylsulfoxide in polyethylene glycol 400 (PEG-400) as solvent at ambient temperature. This methodology can be applied to various fluoroarylated systems (ArF=mono-, poly-, or perfluorophenyl). The reaction give rise to 4-fluoro substituted derivatives 147 during 8 min in yields of 96 % (Schane 38) [69], The same reaction has been recently reported by using l-butyl-3-methylimidazolium tetrafluoroborate as eco-friendly reaction medium at room temperature [70],... 

---