Production de Résine Époxy à partir du Bisphénol A

L'adhésif haute performance et matériau matriciel pour composites

Materials Science & Polymers Global Industrial Scale $10 billion

Aperçu

Epoxy resins are produced by the reaction of bisphenol A (BPA) with epichlorohydrin (ECH) to form diglycidyl ether of bisphenol A (DGEBA), the most widely used epoxy resin worldwide. Epoxies are valued for their exceptional adhesion to diverse substrates, chemical resistance, and mechanical properties after curing with amine or anhydride hardeners. Applications include aerospace composites, protective coatings, electronic encapsulation, wind turbine blades, and structural adhesives.

Procédé chimique

Bisphenol A reacts with excess epichlorohydrin (ECH:BPA ratio 2-10:1) in the presence of NaOH at 40-70 degrees C. The NaOH dehydrohalogenates the chlorohydrin intermediate to form epoxide groups, generating NaCl as byproduct. The crude resin is washed to remove salt and unreacted ECH, then molecular weight is controlled by the BPA:ECH ratio.

HO-C6H4-C(CH3)2-C6H4-OH + 2ClCH2-CHCH2O ->[NaOH] CH2(O)CHCH2-O-C6H4-C(CH3)2-C6H4-O-CH2CH(O)CH2 + 2NaCl + 2H2O

Matières premières

  • Bisphenol A (BPA, C15H16O2) — Condensation of phenol with acetone (Dihydroxy monomer)
  • Epichlorohydrin (ECH, C3H5ClO) — Allyl chloride route or glycerin-based Epicerol process (Epoxy group donor)
  • Sodium hydroxide (NaOH) — Chlor-alkali process (Dehydrohalogenation agent)

Produits finis

  • DGEBA epoxy resin — Adhesives, coatings, composites, electronic encapsulation (Epoxide equivalent weight 170-3,500 g/eq depending on grade)
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Environmental Impact

BPA is an endocrine disruptor, and its use in food-contact applications is increasingly restricted. Epichlorohydrin is toxic and carcinogenic. Cured epoxy resins are thermosets and difficult to recycle conventionally. Bio-based alternatives from plant oils and vanillin are under development.

Considérations de sécurité

Innovations récentes

Bio-based epoxy from epoxidized soybean oil and vanillin-derived monomers are entering the market.
Vitrimers (dynamic covalent network epoxies) enable recyclability of thermoset epoxies through bond exchange reactions at elevated temperatures.

Échelle de production

4500000

tonnes/an

$10 billion

valeur marchande

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Frequently Asked Questions

What industry uses Production de Résine Époxy à partir du Bisphénol A?
Production de Résine Époxy à partir du Bisphénol A is used in the materials science & polymers sector at global industrial scale scale.
What process is involved in Production de Résine Époxy à partir du Bisphénol A?
Bisphenol A reacts with excess epichlorohydrin (ECH:BPA ratio 2-10:1) in the presence of NaOH at 40-70 degrees C. The NaOH dehydrohalogenates the chlorohydrin intermediate to form epoxide groups, generating NaCl as byproduct. The crude resin is washed to remove salt and unreacted ECH, then molecular
What is the economic significance of Production de Résine Époxy à partir du Bisphénol A?
Production de Résine Époxy à partir du Bisphénol A has a market value of $10 billion and annual production of 4,500,000 tons.
What is the environmental impact of Production de Résine Époxy à partir du Bisphénol A?
BPA is an endocrine disruptor, and its use in food-contact applications is increasingly restricted. Epichlorohydrin is toxic and carcinogenic. Cured epoxy resins are thermosets and difficult to recycle conventionally. Bio-based alternatives from plant oils and vanillin are under development.
What raw materials are used in Production de Résine Époxy à partir du Bisphénol A?
The main raw materials include: Bisphenol A (BPA, C15H16O2), Epichlorohydrin (ECH, C3H5ClO), Sodium hydroxide (NaOH).