ChemicalBook CAS DataBase List 4,4'-(4,4'-ISOPROPYLIDENEDIPHENOXY)BIS(PHTHALIC ANHYDRIDE)

4,4'-(4,4'-ISOPROPYLIDENEDIPHENOXY)BIS(PHTHALIC ANHYDRIDE) synthesis

10synthesis methods

Product Name:4,4'-(4,4'-ISOPROPYLIDENEDIPHENOXY)BIS(PHTHALIC ANHYDRIDE)
CAS Number:38103-06-9
Molecular formula:C31H20O8
Molecular Weight:520.49

4,4'-(4,4'-ISOPROPYLIDENEDIPHENOXY)BIS can be used as the main raw material for polyimide products and their composites.4,4'-(4,4'-ISOPROPYLIDENEDIPHENOXY)BIS is synthesized from 4-chlorinated anhydride and bisphenol A.

4,4'-[(1-methylethylidene)bis(1,4-phenyleneoxy)]bisphthalic acid

38103-05-8
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4,4'-(4,4'-ISOPROPYLIDENEDIPHENOXY)BIS(PHTHALIC ANHYDRIDE)

38103-06-9
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$6.00/5g

Yield:38103-06-9 242.40 g

Reaction Conditions:

with acetic anhydride;acetic acid for 2 h;Reflux;

Steps:

1.3; 4.3

(3) Pour the dried solid into a mixed solution of 1.2 kg of acetic acid and 170 g of acetic anhydride, heat to reflux for 2 h, cool, filter, and collect the solid.The solid was recrystallized from a mixed solution of acetonitrile and toluene, and then filtered, the solid was collected, and dried to obtain 242.40 g of bisphenol A diether dianhydride (yield 93.23%), and the HPLC purity was 99.78%.

References:

CN110483454,2019,A Location in patent:Paragraph 0051; 0054; 0063; 0066

80-05-7 Synthesis