Polyphosphonate Flame Retardant Curing Agent For Epoxy Resin

• US 20070219295A1
• Filed: 05/19/2004
• Published: 09/20/2007
• Est. Priority Date: 05/19/2004
• Status: Active Grant

• Current Assignee: ICL-IP America Inc. (ICL Group Ltd.)
• Original Assignee: ICL-IP America Inc. (ICL Group Ltd.)
• Inventors: Levchik, Sergei, Piotrowski, Andrew
• Granted Patent: US 7,910,665 B2
• Time in Patent Office: Days
• US Class Current: 523/451
• CPC Class Codes: C08G 59/4071 phosphorus containing compounds

Abstract

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.

Claims

1. An epoxy resin composition comprising an epoxy resin and, as the effective curing agent, an epoxy-reactive polyphosphonate.

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. A composition as claimed in claim 1 wherein the polyphosphonate has the formula

7. A composition as claimed in claim 2 wherein the polyphosphonate has the formula

8. A composition as claimed in claim 3 wherein the polyphosphonate has the formula

9. A composition as claimed in claim 4 wherein the polyphosphonate has the formula

10. A composition as claimed in claim 5 wherein the polyphosphonate has the formula