| 摘要 |
The present invention discloses a phosphorus- and nitrogen-containing resin hardener, which has a structure represented by the following formula:wherein R2 represents a hydrogen atom or a group represented by the following formula:wherein n is an integer of from 0 to 20, and R represents phenylene, naphthylene or a group represented by the following formula:wherein A represents -O-, -S-, -SO2-, -CO-, -CH2-, -C(CH3)2- or a group represented by the following formula:provided that at least one R2 is not a hydrogen atom; and R1 represents NHR2, C1-6alkyl or phenyl; in the above groups represented by R and A, the aromatic group can be substituted by one or more substituents selected from the group consisting of hydroxy, amino, carboxy and C1-6alkyl. The present invention also discloses a flame retarding composition containing said hardener.
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