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Epoxy is the family of basic components or cured end products of epoxy resins. Epoxy resins, also known as polyepoxides, ... Polyphenols, such as bisphenol A or ...
Phenol-formaldehyde resins, as a group, are formed by a step-growth polymerization reaction that can be either acid- or base-catalysed.Since formaldehyde exists predominantly in solution as a dynamic equilibrium of methylene glycol oligomers, the concentration of the reactive form of formaldehyde depends on temperature and pH.
Polyphenols (/ ˌ p ɒ l i ˈ f iː n oʊ l,-n ɒ l /) are a large family of naturally occurring phenols. [1] They are abundant in plants and structurally diverse. [1] [2] [3] Polyphenols include phenolic acids, flavonoids, tannic acid, and ellagitannin, some of which have been used historically as dyes and for tanning garments.
[12] [13] From the 1990s onward, concern has been raised over the use of BADGE-based epoxy resins in the lining of some cans for foodstuffs, with the chemical being found to leach into foods. [ 12 ] [ 14 ] Bisphenol A Diglycidyl ether-based epoxy coatings are extensively used for coating the inside of cans which come into contact with food and ...
The bisphenols (/ ˈ b ɪ s f ɪ n ɒ l /) are a group of industrial chemical compounds related to diphenylmethane; commonly used in the creation of plastics and epoxy resins. [1] [2] [3] Most are based on two hydroxyphenyl functional groups linked by a methylene bridge.
They are used extensively in epoxy formulation in North America [3] [4] but its use has been phased out in Europe. [5] These compounds are also precursors to the commercially important non-ionic surfactants alkylphenol ethoxylates and nonylphenol ethoxylates, which are used in detergents , paints, pesticides , personal care products, and plastics.
Bisphenol S (BPS, dioxydiphenylsulfone) is an organic compound with the formula (HOC 6 H 4) 2 SO 2.It has two phenol functional groups on either side of a sulfonyl group. It is commonly used in curing fast-drying epoxy resin adhesives.
In organic chemistry, a polyol is an organic compound containing multiple hydroxyl groups (−OH).The term "polyol" can have slightly different meanings depending on whether it is used in food science or polymer chemistry.
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