Hardener and cure accelerant with flame retardancy effect for curing epoxy resins (II)

An epoxy resin composition comprising:

• a) at least one epoxy resin;
• and,
• b) at least one compound from the group of esters of phosphorus-containing acids according to Formula (I)
• wherein radicals R1, R2, R3, R6, X and indices m, n, p, simultaneously or independently are:
• R1, R2=simultaneously or independently of one another, alkyl,
• R3=alkyl, aryl, —O-aryl, —O-alkylaryl or —O-arylalkyl,
• R6=hydrogen, alkyl or —NHC(O)NR1R2,
• X=oxygen or sulphur,
• m=1, 2 or 3,
• n=0, 1 or 2, wherein m+n=3, and
• p=0, 1 or 2.

A composite material comprising:

• a) a carrier material;
• b) at least one epoxy resin;
• and,
• c) at least one compound from the group of esters of phosphorus-containing acids according to Formula (I)
• wherein radicals R1, R2, R3, R6, X and indices m, n, p, simultaneously or independently are:
• R1, R2=simultaneously or independently of one another, alkyl,
• R3=alkyl, aryl, —O-aryl, —O-alkylaryl or —O-arylalkyl,
• R6=hydrogen, alkyl or —NHC(O)NR1R2,
• X=oxygen or sulphur,
• m=1, 2 or 3,
• n=0, 1 or 2, wherein m+n=3, and
• p=0, 1 or 2.

A method for curing prepregs, laminates, coatings, polymer resin mixtures, powder paints, sealing compounds or adhesives, in each case comprising applying a compound from the group of esters of phosphorus-containing acids according to Formula (I)

• wherein radicals R1, R2, R3, R6, X and indices m, n, p, simultaneously or independently are:
• R1, R2=simultaneously or independently of one another, alkyl,
• R3=alkyl, aryl, —O-aryl, —O-alkylaryl or —O-arylalkyl,
• R6=hydrogen, alkyl or —NHC(O)NR1R2,
• X=oxygen or sulphur,
• m=1, 2 or 3,
• n=0, 1 or 2, wherein m+n=3, and
• p=0, 1 or 2
• to the prepregs, laminates, coatings, polymer resin mixtures, powder paints, sealing compounds or adhesives, and
• wherein the prepregs, laminates, coatings, polymer resin mixtures, powder paints, sealing compounds or adhesives are cured.

A method for accelerated curing of prepregs, laminates, coatings, polymer resin mixtures, powder paints, sealing compounds or adhesives, in each case comprising applying a compound from the group of esters of phosphorus-containing acids according to Formula (I)

• wherein radicals R1, R2, R3, R6, X and indices m, n, p, simultaneously or independently are:
• R1, R2=simultaneously or independently of one another, alkyl,
• R3=alkyl, aryl, —O-aryl, —O-alkylaryl or —O-arylalkyl,
• R6=hydrogen, alkyl or —NHC(O)NR1R2,
• X=oxygen or sulphur,
• m=1, 2 or 3,
• n=0, 1 or 2, wherein m+n=3, and
• p=0, 1 or 2
• to the prepregs, laminates, coatings, polymer resin mixtures, powder paints, sealing compounds or adhesives, and
• wherein the prepregs, laminates, coatings, polymer resin mixtures, powder paints, sealing compounds or adhesives undergo accelerated curing.

A flame retardant composition comprising at least one compound from the group of esters of phosphorus-containing acids according to Formula (I)

• wherein radicals R1, R2, R3, R6, X and indices m, n, p, simultaneously or independently are:
• R1, R2=simultaneously or independently of one another, alkyl,
• R3=alkyl, aryl, —O-aryl, —O-alkylaryl or —O-arylalkyl,
• R6=hydrogen, alkyl or —NHC(O)NR1R2,
• X=oxygen or sulphur,
• m=1, 2 or 3,
• n=0, 1 or 2, wherein m+n=3, and
• p=0, 1 or 2.

A hardener composition comprising at least one compound from the group of esters of phosphorus-containing acids according to Formula (I)

• wherein radicals R1, R2, R3, R6, X and indices m, n, p, simultaneously or independently are:
• R1, R2=simultaneously or independently of one another, alkyl,
• R3=alkyl, aryl, —O-aryl, —O-alkylaryl or —O-arylalkyl,
• R6=hydrogen, alkyl or —NHC(O)NR1R2,
• X=oxygen or sulphur,
• m=1, 2 or 3,
• n=0, 1 or 2, wherein m+n=3, and
• p=0, 1 or 2 wherein the hardener composition can be provided as a single-component paste.

A cure accelerator composition comprising at least one compound from the group of esters of phosphorus-containing acids according to Formula (I)

• wherein radicals R1, R2, R3, R6, X and indices m, n, p, simultaneously or independently are:
• R1, R2=simultaneously or independently of one another, alkyl,
• R3=alkyl, aryl, —O-aryl, —O-alkylaryl or —O-arylalkyl,
• R6=hydrogen, alkyl or —NHC(O)NR1R2,
• X=oxygen or sulphur,
• m=1, 2 or 3,
• n=0, 1 or 2, wherein m+n=3, and
• p=0, 1 or 2
• wherein the hardener composition can be provided as a single-component paste.

A method for curing an epoxy resin comprising applying to the epoxy resin a compound from the group of esters of phosphorus-containing acids according to Formula (I)

• wherein radicals R1, R2, R3, R6, X and indices m, n, p, simultaneously or independently are:
• R1, R2=simultaneously or independently of one another, alkyl,
• R3=alkyl, aryl, —O-aryl, —O-alkylaryl or —O-arylalkyl,
• R6=hydrogen, alkyl or —NHC(O)NR1R2,
• X=oxygen or sulphur,
• m=1, 2 or 3,
• n=0, 1 or 2, wherein m+n=3, and
• p=0, 1 or 2
• wherein the epoxy resin is cured.

A method for accelerated curing of an epoxy resin comprising applying to the epoxy resin a compound from the group of esters of phosphorus-containing acids according to Formula (I)

• wherein radicals R1, R2, R3, R6, X and indices m, n, p, simultaneously or independently are:
• R1, R2=simultaneously or independently of one another, alkyl,
• R3=alkyl, aryl, —O-aryl, —O-alkylaryl or —O-arylalkyl,
• R6=hydrogen, alkyl or —NHC(O)NR1R2,
• X=oxygen or sulphur,
• m=1, 2 or 3,
• n=0, 1 or 2, wherein m+n=3, and
• p=0, 1 or 2
• wherein the epoxy resin undergoes accelerated curing.