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Further, TBBPA structurally mimics the thyroid hormone thyroxin (T 4) and can bind more strongly to the transport protein transthyretin than T 4 does, likely interfering with normal T 4 activity. TBBPA likely also suppresses immune responses by inhibiting expression of CD25 receptors on T cells , preventing their activation, and by reducing ...
Epichlorohydrin (abbreviated ECH) is an organochlorine compound and an epoxide. Despite its name, it is not a halohydrin . It is a colorless liquid with a pungent, garlic-like odor, moderately soluble in water, but miscible with most polar organic solvents . [ 4 ]
The rate of the base-catalysed reaction initially increases with pH, and reaches a maximum at about pH = 10. The reactive species is the phenoxide anion (C 6 H 5 O −) formed by deprotonation of phenol. The negative charge is delocalised over the aromatic ring, activating sites 2, 4 and 6, which then react with the formaldehyde.
Global production in 2022 was estimated to be in the region of 10 million tonnes. [8] BPA's largest single application is as a co-monomer in the production of polycarbonates, which accounts for 65–70% of all BPA production. [9] [10] The manufacturing of epoxy resins and vinyl ester resins account for 25–30% of BPA use.
AGE is prepared commercially by the etherification of allyl alcohol with epichlorohydrin. Hydrogen chloride, the byproduct of their condensation, is removed with a base. [5] The synthesis of allyl glycidyl ether by condensation of allyl alcohol and epichlorohydrin. AGE can also be synthesized by monoepoxidation of diallyl ether. [6] [7]
4-Isopropylphenol is an organic compound with the formula (CH 3) 2 CHC 6 H 4 OH. The molecule consists of an isopropyl group affixed to the para ( p -) position of phenol . The compound, a white solid, is produced by the alkylation of phenol with propylene and is relevant to the production of the commodity chemical bisphenol A (BPA).
The degree of composition drift is directly affected by the reactivity ratios of each monomer in the copolymer system. Both the Mayo-Lewis equation and plot of the equation make evident that as monomer conversion increases, the copolymer composition will drift as the preferences for monomers change due to the interaction between reactivity ...
The usual method of synthesis is to take brominated neopentyl glycol and react with epichlorohydrin using Lewis acid catalysis to form the halohydrin. This species is then reacted with sodium hydroxide to form the diglycidyl ether. [1]