Phosphorus-containing flame-retardant hardeners, epoxy resins, advanced epoxy resins and cured epoxy resins
AssigneeChun-Shan WANG
InventorsChun-Shan Wang, Jeng-Yueh Shieh, Ching Hsuan Lin
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Abstract
The present invention discloses an active-hydrogen-containing phosphorus compound for cross-linking a resin and for imparting flame-retardancy to the cured resin, and in particular to a cured frame-retardant epoxy resin prepared by reacting the hardener with a di- or poly-functional epoxy resin via an addition reaction between the active hydrogen and the epoxide group. The present invention also discloses an epoxy resin made from the active-hydrogen-containing phosphorus compound and epihalohydrin.
Claims37
A phosphorus-containing flame-retardant hardener having a formula selecting from the group consisting of (A) to (I):
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- wherein
- l and m independently are 0, 1 or 2, and I+m>0;
- i and j independently are 0, 1 or 2, and 0<i+j<4;
- k is 0 or 1, and i+k<3;
- Z is —NH2, —CH3 or phenyl;
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- 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;
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- wherein R is C1-C4 alkyl or C6-C18 aryl;
- and n is an integer of 0 to 5.
A phosphorus-containing frame-retardant advanced epoxy resin and cured epoxy resin having t he following formula (J):
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- wherein
- 0<h<10;
- T=L or M, wherein
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- the formula (J) represents the advanced epoxy resin, when T=L;
- and
- the formula (J) represents the cured epoxy resin, when T=M;
- A′ is
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- wherein l and m are independently are 0, 1 or 2, and I+m>0;
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- 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;
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- wherein R is C1-C4 alkyl or C6-C18 aryl;
- and n is an integer of 0 to 5;
- Ep is
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- or a phenol-aldehyde novolac epoxy resin backbone, and when Ep is the phenol-aldehyde novolac epoxy resin backbone, the flame-retardant advanced epoxy resin and the cured epoxy resin represented by the formula (J) is prepared by reacting a phosphorus-containing flame-retardant hardener having the following formula (A) with a phenol-aldehyde novolac epoxy resin having the following formula (II)
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- wherein Q, X, l and m are defined as above;
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- wherein R3 is hydrogen, or —CH3, and g is an integer of 1-6.
Dependencies are inferred from the claim text.