ODPA also named oxydiphthalic anhydride or odpa anhydride, is a solid, melts in the range of 225-229 °C, offering a greater degree of flexibility than other commercial dianhydrides. It also is somewhat less reactive than BTDA.  ODPA has largely been used in polyimides and much less so in epoxies. It imparts special performance properties in free films and in FCCL production for high-end personal electronic devices.

Oxydiphthalic anhydride is a chemical compound with the formula C8H4O3. It is an organic compound that is used as an intermediate in the production of polyesters and polyamides. It is a white solid that is insoluble in water, but soluble in most organic solvents. It is produced by the oxidation of diphenylmethane or other aromatic compounds.

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Introduction of the Oxydiphthalic anhydride:

Chemical Name:ODPA

Other Name:Oxydiphthalic Anhydride,OPDA Anhydride

Classification:Anhydride

Molecule:C16H6O7

Molecule Weight:310.22

Structural Formula:

CAS NO.:1823-59-2

HS CODE:2909-3000

Standard:Q/82HL05-2004

Synonyms:

4,4'-Oxydiphthalic dianhydride; 5,5’-oxybis-3-isobenzofurandione;oxydiphthalicanhydride; 4-4'-OXYDIPHTHALIC   ACID ANHYDRIDE; 4,4'-OXYDIPHTHALIC ANHYDRIDE; BIS-(3-PHTHALYL ANHYDRIDE)   ETHER; ODPA;4,4'-Oxydiphthalic Acid.

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Product Specification of oxydiphthalic anhydride

Features of CAS NO. 1823-59-2 ODPA 4,4'-Oxydiphthalic anhydride

1. Excellent thermal stability

2. Good chemical resistance

3. Stable mechanical properties

4. Polyimide does not need to add flame retardant to prevent burning.

Application of oxydiphthalic anhydride

Oxydiphthalic anhydride is primarily used as an intermediate in the synthesis of polyesters and polyamides.

In the production of polyesters, oxydiphthalic anhydride is used to synthesize dicarboxylic acids, which are then used to make polyesters through a process called polycondensation. Polyesters are a class of polymers that have a wide range of applications, including use in textiles, films, and resins.

In the production of polyamides, oxydiphthalic anhydride is used to synthesize dicarboxylic acids, which are then used to make polyamides through a process called polycondensation. Polyamides are a class of polymers that are known for their high strength and durability and are used in a wide range of applications including textiles, automotive parts, and engineering plastics.

In addition to its use in the synthesis of polyesters and polyamides, oxydiphthalic anhydride has also been used as a crosslinking agent in the production of coatings and adhesives.

ODPA is also used to produce polyetherimide thermoplastic resins. A good balance of rigidity and flexibility leads to high toughness, a requirement for these high-performance engineered materials, used in a variety of aerospace, automotive and industrial parts.