Vinyl ether curing composition
A vinyl ether curing composition is formed from a polyvalent vinyl ether compound, a polyvalent phenolic compound and a flame retardant. The composition may contain 10 to 30 parts by weight of a phosphorus-based flame retardant as the flame retardant per 100 parts by weight of the total of the polyfunctinoal vinyl ether compound and the polyhydric phenol compound. This vinyl ether curing composition allows the formation of a cured product with a low dielectric constant.
1. A vinyl ether curing composition, comprising:
a polyfunctional vinyl ether compound;
a polyhydric phenol compound; and
a flame retardant,
wherein the composition contains 10 to 30 parts by weight of a phosphorus-based flame retardant as the flame retardant per 100 parts by weight of the total of the polyfunctional vinyl ether compound and the polyhydric phenol compound,
and the polyfunctional vinyl ether compound is Compound No. 1, Compound No. 3, Compound No. 4 or Compound No. 5 where n′ is 1 to 10,000:
2. The vinyl ether curing composition according to claim 1 , wherein the composition contains 30 to 200 parts by weight of the polyhydric phenol compound per 100 parts per weight of the polyfunctional vinyl ether compound.
3. The vinyl ether curing composition according to claim 1 , wherein the polyfunctional vinyl ether compound is a tetra- or higher functional vinyl ether compound.
4. The vinyl ether curing composition according to claim 1 , wherein the polyhydric phenol compound is a phenol resin represented by general formula (I):
wherein n represents 0 or 1; and m represents a number of from 1 to 10000.
5. The vinyl ether curing composition according to claim 1 , containing 10 to 1000 parts by weight of silica as the filler per 100 parts by weight of the total of the polyfunctional vinyl ether compound and the polyhydric phenol compound.
6. The vinyl ether curing composition according to claim 1 , wherein the phosphorus-based flame retardant is a compound represented by formula (II):
7. The vinyl ether curing composition according to claim 1 , further comprising a polyepoxy compound.
8. A prepreg formed by using the vinyl ether curing composition according to claim 1 .
9. The vinyl ether curing composition according to claim 2 , wherein the polyfunctional vinyl ether compound is a tetra- or higher functional vinyl ether compound.
10. The vinyl ether curing composition according to claim 2 , wherein the polyhydric phenol compound is a phenol resin represented by general formula (I):
wherein n represents 0 or 1; and m represents a number of from 1 to 10000.
11. The vinyl ether curing composition according to claim 3 , wherein the polyhydric phenol compound is a phenol resin represented by general formula (I):
wherein n represents 0 or 1; and m represents a number of from 1 to 10000.
12. The vinyl ether curing composition according to claim 2 , containing 10 to 1000 parts by weight of silica as the filler per 100 parts by weight of the total of the polyfunctional vinyl ether compound and the polyhydric phenol compound.
13. The vinyl ether curing composition according to claim 3 , containing 10 to 1000 parts by weight of silica as the filler per 100 parts by weight of the total of the polyfunctional vinyl ether compound and the polyhydric phenol compound.
14. The vinyl ether curing composition according to claim 4 , containing 10 to 1000 parts by weight of silica as the filler per 100 parts by weight of the total of the polyfunctional vinyl ether compound and the polyhydric phenol compound.
15. The vinyl ether curing composition according to claim 2 , wherein the phosphorus-based flame retardant is a compound represented by formula (II):