Phosphorus-containing phenolic, thiophenolic or aminophenyl flame-retardant hardener, and epoxy resins cured thereby
AssigneeNational Science Council
InventorsChun-Shan Wang, Jeng-Yueh Shieh
Life of this patent
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Abstract
A hardener for an epoxy resin comprises a phenolic, thiophenolic, aminophenyl, tris-phenolic, tris-thiophenolic, tris-aminophenyl, tetrakis-phenolic, tetrakis-thiophenolic, or tetrakis-aminophenyl compounds; or phenol-formaldehyde or phenol-formaldehyde/melamine-formaldehyde resins wherein the phenyl rings are substituted with at least one of the structures wherein R1 and R2 independently are H, C1-C18 alkyl, C6-C18 aryl, C6-C18 substituted aryl, C6-C18 aryl methylene, or C6-C18 substituted aryl methylene; X is O, S or NH and Ar is wherein R is C1-C4 alkyl and n=0-5.
Claims61
A phosphorus-containing hardenet having a formula selecting from the group consisting of (a), (b), (c) and (d):
- wherein
- m=1 or 2;
- m′=0 or 1;
- p=0˜3;
- R=C1˜C4 alkyl;
- X=O, S or NH;
- wherein Q=—, when Q′ is the latter;
- wherein
- R1, R2 independently are H, C1˜C18 alkyl, C6˜C18 aryl, C6˜C18 substituted aryl, C6˜C18 aryl methylene, or C6˜C18 substituted aryl methylene;
- n′=0˜11;
- Z=—NH2, —NHR, or —R;
- o=1˜3;
- o′=3˜10;
- r=0˜6;
- R, Q and p are defined as above;
- 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′ ate 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).
Dependencies are inferred from the claim text.