Mixed amine-phenol hardeners for epoxy resins

Claim 2

AN ASSOCIATION PRODUCT COMPRISING, IN ADMIXTURE, A. A LIQUID POLYAMINE HAVING 3-5 AMINO HYDROGEN ATOMS, SELECTED FROM THE GROUP CONSISTING OF N-AMINOALKYL PIPERAZINES AND AMINES OF ALIPHATIC, CYCLOALIPHATIC, AND ARALIPHATIC HYDROCARBONS AND ETHER-HYDROCARBONS; B. A LIQUID PRIMARY MONOAMINE OF AN ALIPHATIC, CYCLOALIPHATIC, OR ARALIPHATIC HYROCARBON; AND C. A LIQUID ALKYLMONOPHENOL, SAID MIXTURE COMPRISING FROM 0.3 TO 3 EQUIVALENTS OF MONOAMINE AMINO HYDROGEN PER EQUIVALENT OF POLYAMINE AMINO HYDROGEN AND 0.25 TO 1 EQUIVALENT OF ALKYLMONOPHENOL PER EQUIVALENT OF TOTAL AMOUNT NITROGEN; WITH

Claim 3

AN ADDUCT FORMED BY THE ADMIXTURE OF

Claim 4

AN ADDUCT FORMED BY THE ADMIXTURE OF

Claim 5

In a method for hardening an epoxy resin selected from the group consisting of liquid polyglycidyl ethers and liquid polyglycidyl esters, which method comprises admixing said epoxy resin with an amine hardening agent, the improvement wherein said hardening agent is an association product comprising, in admixture, a. a liquid polyamine having 3 - 5 amino hydrogen atoms, selected from the group consisting of N-aminoalkyl piperazines and amines of aliphatic, cycloaliphatic, and araliphatic hydrocarbons and ether-hydrocarbons; b. a liquid primary monoamine of an aliphatic, cycloaliphatic, or araliphatic hydrocarbon; and c. a liquid alkylmonophenol, said mixture comprising from 0.3 to 3 equivalents of monoamine amino hydrogen per equivalent of polyamine amino hydrogen and 0.25 to 1 equivalent of alkylmonophenol per equivalent of total amino nitrogen.

Claim 6

In a method for hardening an epoxy resin selected from the group consisting of liquid polyglycidyl ethers and liquid polyglycidyl esters, which method comprises admixing said epoxy resin with an amine hardening agent, the improvement wherein said hardening agent is an association product comprising, in admixture, a. a liquid polyamine having 3 - 5 amino hydrogen atoms, selected from the group consisting of N-aminoalkyl piperazines and amines of aliphatic, cycloaliphatic, and araliphatic hydrocarbons and ether-hydrocarbons; b. a liquid primary monoamine of an aliphatic, cycloaliphatic, or araliphatic hydrocarbon; and c. a liquid alkylmonophenol, said mixture comprising from 0.3 to 3 equivalents of monoamine amino hydrogen per equivalent of polyamine amino hydrogen and 0.25 to 1 equivalent of alkylmonophenol per equivalent of total amino nitrogen.

Claim 7

from 10 to 30 equivalent percent, based on the total amino hydrogen in said association product, of a member selected from the group consisting of liquid polyglycidyl ethers and liquid polyglycidyl esters.

Claim 8

from 10 to 30 equivalent percent, based on the total amino hydrogen in said association product, of a member selected from the group consisting of liquid polyglycidyl ethers and liquid polyglycidyl esters.

Claim 9

FROM 10 TO 30 EQUIVALENT PERCENT, BASED ON THE TOTAL AMINO HYDROGEN IN SAID ASSOCIATION PRODUCT, OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF LIQUID POLYGLYCIDYL ETHERS AND LIQUID POLYGLYCIDYL ESTERS.

Claim 10

FROM 10 TO 30 EQUIVALENT PERCENT, BASED ON THE TOTAL AMINO HYDROGEN IN SAID ASSOCIATION PRODUCT, OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF LIQUID POLYGLYCIDYL ETHERS AND LIQUID POLYGLYCIDYL ESTERS.

Claim 11

In a method for hardening an epoxy resin which is a member selected from the group consisting of liquid polyglycidyl ethers and liquid polyglycidyl esters which comprises admixing a portion of said epoxy resin with an amine hardening agent to form an adduct, and then combining said adduct with the balance of the epoxy resin to be hardened, the improvement wherein a portion of said epoxy resin is reacted with an association product in an amount from 10 to 30 equivalent percent, based on the total amino hydrogen in said association product, to form said adduct, said association product comprising, in admixture, a. a liquid polyamine having 3 - 5 amino hydrogen atoms, selected from the group consisting of N-aminoalkyl piperazines and amines of aliphatic, cycloaliphatic, and araliphatic hydrocarbons and ether-hydrocarbons; b. a liquid primary monoamine of an aliphatic, cycloaliphatic, or araliphatic hydrocarbon; and c. a liquid alkylmonophenol, said mixture comprising from 0.3 to 3 equivalents of monoamine amino hydrogen per equivalent of polyamine amino hydrogen aNd 0.25 to 1 equivalent of alkylmonophenol per equivalent of total amino nitrogen.

Claim 12

In a method for hardening an epoxy resin which is a member selected from the group consisting of liquid polyglycidyl ethers and liquid polyglycidyl esters which comprises admixing a portion of said epoxy resin with an amine hardening agent to form an adduct, and then combining said adduct with the balance of the epoxy resin to be hardened, the improvement wherein a portion of said epoxy resin is reacted with an association product in an amount from 10 to 30 equivalent percent, based on the total amino hydrogen in said association product, to form said adduct, said association product comprising, in admixture, a. a liquid polyamine having 3 - 5 amino hydrogen atoms, selected from the group consisting of N-aminoalkyl piperazines and amines of aliphatic, cycloaliphatic, and araliphatic hydrocarbons and ether-hydrocarbons; b. a liquid primary monoamine of an aliphatic, cycloaliphatic, or araliphatic hydrocarbon; and c. a liquid alkylmonophenol, said mixture comprising from 0.3 to 3 equivalents of monoamine amino hydrogen per equivalent of polyamine amino hydrogen aNd 0.25 to 1 equivalent of alkylmonophenol per equivalent of total amino nitrogen.