बिस्फेनॉल A से एपॉक्सी रेजिन उत्पादन

उच्च-प्रदर्शन चिपकने वाला और कंपोजिट मैट्रिक्स सामग्री

Materials Science & Polymers Global Industrial Scale $10 billion

अवलोकन

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.

रासायनिक प्रक्रिया

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

कच्चा माल

  • 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)

अंतिम उत्पाद

  • 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.

सुरक्षा संबंधी विचार

हालिया नवाचार

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.

उत्पादन पैमाना

4500000

टन/वर्ष

$10 billion

बाज़ार मूल्य

%(name)s में और Materials Science & Polymers

केवलर (पॉली-p-फेनिलीन टेरेफ्थेलमाइड) फाइबर उत्पादन

Commercial Production

ग्लास फाइबर कंपोजिट विनिर्माण

Global Industrial Scale

ज़ीगलर-नट्टा उत्प्रेरण द्वारा पॉलीएथिलीन संश्लेषण

Global Industrial Scale

पॉलीएक्रिलोनाइट्राइल से कार्बन फाइबर विनिर्माण

Commercial Production

पॉलीकंडेनसेशन द्वारा नायलॉन 6,6 उत्पादन

Global Industrial Scale

प्रत्यक्ष प्रक्रिया द्वारा सिलिकॉन (PDMS) विनिर्माण

Global Industrial Scale

सल्फर क्रॉस-लिंकिंग के साथ रबर का वल्कनीकरण

Global Industrial Scale

Frequently Asked Questions

What industry uses बिस्फेनॉल A से एपॉक्सी रेजिन उत्पादन?
बिस्फेनॉल A से एपॉक्सी रेजिन उत्पादन is used in the materials science & polymers sector at global industrial scale scale.
What process is involved in बिस्फेनॉल A से एपॉक्सी रेजिन उत्पादन?
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 बिस्फेनॉल A से एपॉक्सी रेजिन उत्पादन?
बिस्फेनॉल A से एपॉक्सी रेजिन उत्पादन has a market value of $10 billion and annual production of 4,500,000 tons.
What is the environmental impact of बिस्फेनॉल A से एपॉक्सी रेजिन उत्पादन?
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 बिस्फेनॉल A से एपॉक्सी रेजिन उत्पादन?
The main raw materials include: Bisphenol A (BPA, C15H16O2), Epichlorohydrin (ECH, C3H5ClO), Sodium hydroxide (NaOH).