Epoxy phosphorous-containing resin, epoxy resin composition essentially containing the epoxy resin, and cured product of the epoxy resin composition
View Patent ↗A novel phosphorous-containing epoxy resin having a naphthalene skeleton is suitable as an insulating material, such as a copper-clad laminate used in an electronic circuit board, and a sealing material, molding material, casting material, adhesive or film material used in an electric component. Furthermore, this epoxy resin is suitable as a material for an electrically insulating coating.
1. A phosphorus-containing epoxy resin containing a naphthol-aralkyl skeleton represented by general formula (1),
wherein
a is an integer of 1, 2, 3, 4, 5 or 6,
b is an integer of 1, 2, 3, 4, 5, 6 or 7,
c is an integer of 1 or more,
X is benzene, naphthalene, anthracene, phenanthrene or biphenyl,
Y is at least one of general formulae (2)-(4), with at least one of general formula (3) or general formula (4) being present,
wherein
d is 0 or 1
R 1 and R 2 independently are a hydrocarbon group and can be a normal chain, branch chain or cyclic structure, or R 1 can be bonded with R 2 and form a cyclic structure,
wherein
e is 0 or an integer of 1, 2, 3, 4 or 5,
b is an integer of 1, 2, 3, 4, 5, 6 or 7,
g is an integer of 1 or more,
d is 0 or 1,
f is an integer of 1, 2, 3, 4, 5 or 6,
the sum total of f and e is an integer of 1, 2, 3, 4, 5 or 6,
R 1 and R 2 are independently a hydrocarbon group and can be a normal chain, branch chain or cyclic structure or R 1 can be bonded with R 2 and can form a cyclic structure,
X is benzene, naphthalene, anthracene, phenanthrene or biphenyl,
Y is at least one of general formulae (2)-(4),
Z is at least one of general formulae (5) and (6),
wherein
h is 0, 1, 2 or 3,
R 3 is a hydrocarbon group and can be a normal chain, branch chain or cyclic structure,
wherein
i is 0, 1, 2, 3, 4 or 5, and
R 3 is a hydrocarbon group and can be a normal chain, branch chain or cyclic structure.
2. The phosphorus-containing epoxy resin of claim 1 , obtained by reacting an epoxy resin possessing a naphthol-aralkyl skeleton, which essentially contains an epoxy resin of general formula (7), with a phosphorous compound represented by general formula (8) and/or general formula (9),
a is an integer of 1, 2, 3, 4, 5 or 6,
b is an integer of 1, 2, 3, 4, 5, 6 or 7,
c is an integer of 1 or more,
X is benzene, naphthalene, anthracene, phenanthrene or biphenyl,
wherein
d is 0 or 1,
R 1 and R 2 independently are a hydrocarbon group and can be a normal chain, branch chain or cyclic structure, or R 1 can be bonded to R 2 and can form a cyclic structure,
wherein
d is 0 or 1,
R 1 and R 2 independently are a hydrocarbon group and can be a normal chain, branch chain or cyclic structure, or R 1 can be bonded to R 2 and can form a cyclic structure, and Z is at least one of general formulae (5) and (6).
3. The phosphorus-containing epoxy resin of claim 2 , where a is 1 and b is claim 1 .
4. A phosphorus-containing epoxy resin composition obtained by blending a curing agent with the phosphorus-containing epoxy resin of claim 1 .
5. A laminated board formed from the phosphorus-containing epoxy resin composition of claim 4 .
6. A sealing material formed from the phosphorus-containing epoxy resin composition of claim 4 .
7. A molding material formed from the phosphorus-containing epoxy resin composition of claim 4 .
8. A cured product obtained by curing the phosphorus-containing epoxy resin composition according to claim 4 .