What is the difference between a-BPDA and s-BPDA?
Oct 15，2025
Structurally, 2,3,3',4'-Biphenyltetracarboxylic dianhydride (a-BPDA) is an asymmetric biphenyl dianhydride, while 3,3',4,4'-biphenyltetracarboxylic dianhydride (s-BPDA) is a symmetric biphenyl dianhydride. Both a-BPDA and s-BPDA can be used to prepare polyimides, but polyimides made from a-BPDA exhibit higher glass transition temperatures and less color than those made from s-BPDA.
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Lastest Price from 2,3,3,4-biphenyl tetracarboxylic dianhydride manufacturers
2,3,3,4-biphenyl tetracarboxylic dianhydride
US $0.00/kg2026-03-25
- CAS:
- 36978-41-3
- Min. Order:
- 1kg
- Purity:
- 99.9%min
- Supply Ability:
- 20tons
2,3,3',4'-Biphenyl tetracarboxylic dianhydride
US $0.00-0.00/KG2025-12-24
- CAS:
- 36978-41-3
- Min. Order:
- 1KG
- Purity:
- 0.99
- Supply Ability:
- 10 tons