| abstract |
PROBLEM TO BE SOLVED: To provide an alicyclic tetracarboxylic dianhydride which is a raw material monomer of a polyimide used for an electronic material and a polyimide thereof. SOLUTION: Hexacyclo [6.6.0. 1 2,7 .0 3,6 .19, 1-4 .0 10,13] hexadecane -4,5,11,12- tetracarboxylic acid-4,5: 11,12-dianhydride (HHAA), also As an intermediate hexacyclo [6.6.0.1 2,7 .0 3,6 .1 9,14 .0 10,13] hexadeca-4,11-diene -4,5,11,12- tetracarboxylic acid, and hexacyclo [6.6.0.1 2,7 .0 3,6 .1 9,14 .0 10,13] hexadecane -4,5,11,12- tetracarboxylic acid, further hexacyclo [6.6.0.1 2,7 .0 3,6 .1 9,14 .0 10,13] hexadeca-4,11-diene -4,5,11,12- tetracarboxylic acid tetraalkyl and hexacyclo [6.6.0.1 2,7 .0 3,6 .1 9,14 .0 10,13] hexadecane -4,5,11,12- tetracarboxylic acid tetraalkyl further for their preparation. (In the formula, R and R 1 represent an alkyl group having 1 to 10 carbon atoms, a broken line represents a single bond or a double bond, and m represents an integer.) |