[Multi Functional Acid Anhydride]

1. Introduction
As a subsidiary of Shanghai Huayi (Group) company, Shanghai Research Institute of synthetic resins is one of Shanghai high-tech enterprises, and has got the ISO9001:2000 certificate.
In 2016, Three Laboratories of Shanghai Huayi (Group) have unified to Shanghai Plastics Institute.
BPADA is delivered from BPA that entered the mass production stage in
Shanghai Synthetic Resin Institute of Technology in China.
In addition, They have the other four functional Acid Anhydride as s-ODPA, a-ODPA also.
They would apply in the usage which could improve the thermal stabilities into the Polyimide
resin, Epoxy resin, the Alkid resin, and the Polyester resin .

2. Molecular Structure

Multi-Functional Acid anhydride
(s) ODPA	CAS.NO. 1823-59-2			pale white powder
4,4’-Oxydiphthalic Anhydride				Assay≧99.2%, mp:227-230℃
(a) ODPA	CAS.NO. 50662-95-8			pale white powder
3,4’-Oxydiphthalic Anhydride				Assay≧99.0%, mp:178-181℃
(s) BPDA	CAS.NO. 2420-87-3			pale yellowish white powder
3,3’,4,4’-Biphenyl Tetracarboxylic Acid Dianhydride				Assay≧99.5%, mp:298-302℃
BPADA	CAS.NO. 38103-06-9			pale white powder
2,2-Bis [4-(Dicarboxy Phenoxy) Phenyl ] Propane Dianhydride				Assay≧99.0%, mp:188-192℃

3. The additional information
We will be please to prepare a small amount of the sample with Material Safety Data Sheet
if you will request us to try it.
Please understand that our company doesn't take part at all even if the problem on the patent
occurs when using it.

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