Hot melt adhesive composition

Claim 2

Masterbatch compositions suitable for preparing adhesive and sealant compositions, said masterbatch compositions consisting essentially of an alkali metal ionomer of a random copolymer of ethylene, methyl acrylate, and at least one carboxylated termonomer of the general formula ##STR2## where X is H or COOR or COOH, where Y is H or Me, and where R is alkyl of 1-6 carbon atoms, an inorganic filler, and 0.05-10 phr of an ammonium polyphosphate having the general formula H.sub.(n-m)+2 (NH.sub.4).sub.m P.sub.n O.sub.3n+1 wherein n is an integer having a number average value greater than 10, m/n has an average value between about 0.7 and about 1.1, and m has a maximum value equal to n+2.

Claim 3

A masterbatch composition of claim 1 wherein the alkali metal is selected from the group consisting of sodium and potassium.

Claim 4

A masterbatch composition of claim 1 wherein the inorganic filler is carbon black.

Claim 5

A masterbatch composition of claim 1 wherein the terpolymer contains about 50-60 weight % polymerized methyl acrylate units, about 3 to 5 weight % polymerized monoethyl maleate units, and about 35-47 weight % polymerized units of ethylene, and further wherein about 5-50 weight % of the monoethyl maleate units have been neutralized with an alkali metal.

Claim 6

Adhesive and sealant compositions comprising an alkali metal ionomer of a random copolymer of ethylene, methyl acrylate, and at least one carboxylated termonomer of the general formula ##STR3## where X is H or COOR or COOH, Y is H or Me, and R is alkyl of 1-6 carbon atoms, an inorganic filler, 0.05-10 phr of an ammonium polyphosphate having the general formula H.sub.(n-m)+2 (NH.sub.4).sub.m P.sub.n O.sub.3n+1 wherein n is an integer having a number average value greater than 10, m/n has an average value between about 0.7 and about 1.1, and m has a maximum value equal to n+2, a tackifier and a plasticizer.

Claim 7

Adhesive and sealant compositions comprising an alkali metal ionomer of a random copolymer of ethylene, methyl acrylate, and at least one carboxylated termonomer of the general formula ##STR3## where X is H or COOR or COOH, Y is H or Me, and R is alkyl of 1-6 carbon atoms, an inorganic filler, 0.05-10 phr of an ammonium polyphosphate having the general formula H.sub.(n-m)+2 (NH.sub.4).sub.m P.sub.n O.sub.3n+1 wherein n is an integer having a number average value greater than 10, m/n has an average value between about 0.7 and about 1.1, and m has a maximum value equal to n+2, a tackifier and a plasticizer.

Claim 8

An adhesive and sealant composition of claim 5 further comprising a reinforcing resin and an adhesion promoter.

Claim 9

An adhesive and sealant composition of claim 5 wherein the tackifier comprises about 0-250 parts by weight per 100 parts by weight of the terpolymer, the plasticizer comprises about 10-150 parts by weight per 100 parts by weight of the terpolymer, and the filler comprises about 5-200 parts by weight per 100 parts by weight of the terpolymer.

Claim 10

An adhesive and sealant composition of claim 6 wherein the reinforcing resin comprises up to about 30 parts by weight per 100 parts by weight of the termpolymer, and the adhesion promoter comprises 0.2 to 2 parts by weight per 100 parts by weight of the terpolymer.

Claim 11

A process for stabilizing the viscosity of an adhesive and sealant composition based on an alkali metal ionomer of a random copolymer of ethylene, methyl acrylate, and at least one carboxylated unsaturated monomer of the general formula ##STR4## where X is H or COOR or COOH, where Y is H or Me, and where R is alkyl of 1-6 carbon atoms, said process comprising adding to and blending with said composition 0.05-10 phr of an ammonium polyphosphate having the general formula H.sub.(n-m)+2 (NH.sub.4).sub.m P.sub.n O.sub.3n+1 wherein n is an integer having a number average value greater than 10, m/n has an average value between about 0.7 and about 1.1, and m has a maximum value equal to n+2.

Claim 12

A process for stabilizing the viscosity of an adhesive and sealant composition based on an alkali metal ionomer of a random copolymer of ethylene, methyl acrylate, and at least one carboxylated unsaturated monomer of the general formula ##STR4## where X is H or COOR or COOH, where Y is H or Me, and where R is alkyl of 1-6 carbon atoms, said process comprising adding to and blending with said composition 0.05-10 phr of an ammonium polyphosphate having the general formula H.sub.(n-m)+2 (NH.sub.4).sub.m P.sub.n O.sub.3n+1 wherein n is an integer having a number average value greater than 10, m/n has an average value between about 0.7 and about 1.1, and m has a maximum value equal to n+2.