Composition of epoxy resin and epoxy-reactive polyphosphonate
An epoxy resin composition comprising an epoxy resin and, as the effective curing agent, an epoxy-reactive polyphosphonate which can be of the formula (I) where “Y” is an arylene and “n” can range from about 2 to about 30.
1. An epoxy resin composition comprising an epoxy resin, and, as the curing agent, an epoxy-reactive polyphosphonate having formula (1)
wherein “Y” is an arylene, “n” ranges from about 2 to about 30 and R is a lower alkyl.
2. A composition as claimed in claim 1 wherein the epoxy resin comprises from about 50% to about 95%, by weight of the total weight of the composition.
3. A composition as claimed in claim 1 wherein the epoxy resin comprises from 65% to 90% by weight of the total weight.
4. A composition as claimed in claim 1 wherein the polyphosphonate comprises from about 5% to 50%, by weight of the total weight of the composition.
5. A composition as claimed in claim 1 wherein the polyphosphonate comprises from 10% to 35% by weight of the total weight.
6. The composition of claim 1 wherein the R is methyl and the arylene is 1,3,-phenylene.
7. The composition of claim 1 wherein the epoxy resin is a bisphenol A di-epoxy resin.
8. The composition of claim 1 further comprising a fiber and/or cloth reinforcing agent.
9. The composition of claim 1 further comprising a colorant.
10. The composition of claim 1 further comprising a release agent.
11. An epoxy resin composition consisting essentially of an epoxy resin, and, as the curing agent, an epoxy-reactive polyphosphonate having formula (1)
wherein “Y” is an arylene, “n” ranges from about 2 to about 30 and R is a lower alkyl.
12. A composition as claimed in claim 11 wherein the epoxy resin consists essentially of about 50% to about 95%, by weight, of the total weight of the composition.
13. A composition as claimed in claim 11 wherein the epoxy resin consists essentially of 65% to 90% by weight of the total weight.
14. A composition as claimed in claim 11 wherein the polyphosphonate consists essentially of about 5% to about 50%, by weight, of the total weight of the composition.
15. A composition as claimed in claim 11 wherein the polyphosphonate from 10% to 35% by weight of the total weight.
16. The composition of claim 11 wherein the R is methyl and the arylene is 1,3,-phenylene.