Patent ID: 6992151
Filing Date: 2006-01-31
Classification: C07F,C08G,H05K

Abstract:
1. A cured phosphorus-containing epoxy resin prepared by cross-linking an epoxy resin or an advanced epoxy resin in a molten state of said epoxy resin or an advanced epoxy resin and in the presence of a hardener having a formula selected from the group consisting of (a), (b), (c) and (d): wherein R n′=0~11; Z=—NH wherein R is defined as above and n=0–5; wherein either all the A or all the A′ in each formula of (a) to (d) are H, and at least one of the A is not H when all the A′ are H in each formula of (a) to (d), and at least one of the A′ is not H when all the A are H in each formula of (a) to (d); or a hardener mixture comprising one said hardener having said formula and an additional different hardener for epoxy resin.