Dianhydrides

Dianhydrides
Dianhydrides are widely used as monomers for polyimides.

APS has exclusive rights from low cost manufacturers to distribute the following dianhydrides. We can provide the high purity monomers in quantities ranging from grams to metric tons. Contact us at info@akronpolysys.com for a quote.

3,3',4,4'-Biphenyltetracarboxylic acid dianhydride; BPDA

Description:

BPDA is a monomer commonly used in the preparation of commercial polyimides.

Chemical Structure:

Molecular Formula: C16H6O6
Molecular Weight: 294.22
CAS Number: 2420-87-3
Purity: >99%
Comments: Ultra low metals content
Catalog Number: A02
Synonyms: 4,4'-Biphthalic anhydride; Diphenyl-3,3',4,4'-tetracarboxylic dianhydride

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2,3,3',4'-Biphenyltetracarboxylic acid dianhydride; a-BPDA; aBPDA

Description:

Asymmetric BPDA is a monomer that can be incorporated in polyimides to reduce their melt viscosity and increase their Tg.

Chemical Structure:

Molecular Formula: C16H6O6
Molecular Weight: 294.22
CAS Number: 36978-41-3
Purity: >99%
Comments: Ultra low metals content
Catalog Number: A03
Synonyms: Diphenyl-2,3,3',4'-tetracarboxylic dianhydride

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4,4'-Hexafluoroisopropylidenebisphthalic dianhydride; 6FDA

Description:

6FDA is a monomer that can be incorporated in polyimides to increase their solubility while maintaining their thermal stability. 6FDA-based polyimide films are clear and display high transparency.

Chemical Structure:

Molecular Formula: C19H6F6O6

Molecular Weight: 444.24
CAS Number: 1107-00-2
Purity: >99%
Comments: Ultra low metals content
Catalog Number: A04
Synonyms: 2,2-Bis(3,4-dicarboxyphenyl)-1,1,1,3,3,3-hexafluoro propane dianhydride

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Pyromellitic Dianhydride; PMDA

Description:

PMDA is a monomer that is used to prepare many commercial polyimides. PMDA-based polyimides are insoluble in organic solvents. Thus, they must be processed in the form of their soluble polyamic acid precursors.

Chemical Structure:

Molecular Formula: C10H2O6
Molecular Weight: 218.12
CAS Number: 89-32-7
Purity: >99%
Comments: Ultra low metals content
Catalog Number: A05
Synonyms: 1,2,4,5-Benzenetetracarboxylic dianhydridge

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4,4'-Oxydiphthalic Anhydride; ODPA

Description:

ODPA is a monomer that can be incorporated in polyimides to increase their flexibility and solubility while maintaining their thermal stability.

Chemical Structure:

Molecular Formula:  C16H6O7
Moledular Weight:  310.21
CAS Number:  1823-59-2
Purity:  >99%
Comments:  Ulta low metals content
Catalog Number:  A06
Synonyms:  Bis-(3-phthalyl anhydride) ether

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