Polyepoxide curing by polymercaptans and a reaction product of amino acids or lactams with amines
AssigneeDiamond Shamrock Corporation
InventorsAllen T. Slocki, Brian J. Carr, John F. Simone
Life of this patent
Estimating the term…
Abstract
Extremely rapid ambient curing of polyepoxide resins and mixtures of polyepoxide resins and polyacrylate esters is achieved by use of a curing system composed of at least one polymercaptan and at least one catalytic co-curing agent which is the condensation product of: (a) aliphatic amine or substituted aliphatic amine containing at least one primary aliphatic amine group where the aliphatic moiety is ethylene or greater with (b) at least one amino acid, its corresponding lactam or other amide forming derivative. Optionally, known Lewis Base catalysts for the epoxy/mercaptan reaction, such as tertiary amines, may also be used.
Claims14
A curing system for epoxy resins and mixtures of epoxy resins and polyacrylate esters comprising:
- (a) at least one polymercaptan, and
- (b) at least one catalytic co-curing agent which is the reaction product of:
- (i) at least one amine containing at least one primary aliphatic amine substituent where the aliphatic moiety is ethylene or greater with
- (ii) at least one member of the group consisting of amino acid, its corresponding lactam and amide forming derivatives of same.
A curable epoxy resin composition comprising at least one polyepoxide and a curing system comprising:
- (a) at least one polymercaptan, and
- (b) at least one co-curing agent which is the reaction product of:
- (i) at least one aliphatic amine containing at least one primary aliphatic amine substituent where the aliphatic moiety is ethylene or greater with
- (ii) at least one member of the group consisting of amino acid, its corresponding lactam and amide forming derivatives of same.
A substantially insoluble and infusible product which is the reaction product of a polyepoxide composition comprising at least one polyepoxide or mixtures of at least one polyepoxide and polyacrylate ester and a curing system comprising:
- (a) at least one polymercaptan, and
- (b) at least one co-curing agent which is the reaction product of:
- (i) at least one aliphatic amine containing at least one primary aliphatic amine substituent where the aliphatic moiety is ethylene or greater with
- (ii) at least one member of the group consisting of amino acid, its corresponding lactam and amide forming derivatives of same.
A process for curing polyepoxide comprising mixing together and reacting at least one polyepoxide or mixtures of at least one polyepoxide and polyacrylate ester with a curing system comprising:
- (a) at least one polymercaptan, and
- (b) at least one catalytic co-curing agent which is the condensation product of:
- (i) at least one aliphatic amine containing at least one primary aliphatic amine substituent where the aliphatic moiety is ethylene or greater with
- (ii) at least one member of the group consisting of amino acid, its corresponding lactam and amide forming derivatives of same.
Dependencies are inferred from the claim text.