Delamination-resistant multilayer container, preform, article and method with oxygen barrier formulations

A preform for blow molding a plastic container having a multilayer wall, which includes:

• at least one layer of a polyester resin selected from the group consisting of PET, PEN, blends or copolymers of PET and PEN, and regrind that consists essentially of PET, PEN, or blends or copolymers of PET and PEN;
• at least one layer of a barrier resin selected from the group consisting of EVOH, polyamide, acrylonitrile copolymers, blends of EVOH and polyamide, a blend of polyester and polyamide, nanocomposites of EVOH or polyamide and clay, blends of EVOH and an ionomer, acrylonitrile, cyclic olefin copolymers, polyglycolic acid, polyvinylidene chloride, and blends thereof;
• a polyethyleneimine blended in at least one layer of said barrier resin to promote adhesion between said barrier layer and said polyester layer;
• and
• an active oxygen barrier composition blended in at least one layer of barrier resin and comprising a metal and a compound structure
• wherein -E is selected from the group consisting of —C(═O)H, —CH2R1 and CHR1R2;
• wherein R1 is —O—R3R4 or —O—R4, such that R1 comprises at least two carbon atoms and does not contain a carbonyl group, and R3 and R4 are independently selected from the group consisting of alkyl, alkenyl, alkynyl, heteroalkyl, aryl and heterocyclic;
• R2 is —O—R5R6 or —O—R6, such that R2 comprises at least two carbon atoms and does not contain a carbonyl group, and R5 and R6 are independently selected from the group consisting of alkyl, alkenyl, alkynyl, aryl and heterocyclic;
• or
• R1 and R2, together with the atoms to which they are bonded, form a ring comprising from five to twenty ring atoms.

A plastic container having a multilayer wall, which includes:

• at least one layer of a matrix resin;
• at least one layer of a barrier resin;
• a first material blended with said barrier resin and/or said matrix resin to promote adhesion between said barrier and matrix layers, said first material including an amine polymer;
• and
• an active oxygen barrier composition blended with said barrier resin and/or said matrix resin to provide an active oxygen barrier in said multilayer wall.

A plastic container having a multilayer wall, which includes:

• at least one layer of a polyester resin selected from the group consisting of PET, PEN, blends or copolymers of PET and PEN, and regrind that consists essentially of PET, PEN, or blends or copolymers of PET and PEN;
• at least one layer of a barrier resin selected from the group consisting of EVOH, polyamide, acrylonitrile copolymers, blends of EVOH and polyamide, a blend of polyester and polyamide, nanocomposites of EVOH or polyamide and clay, blends of EVOH and an ionomer, acrylonitrile, cyclic olefin copolymers, polyglycolic acid, polyvinylidene chloride, and blends thereof;
• a polyethyleneimine blended in at least one layer of said barrier resin to promote adhesion between said barrier layer and said polyester layer;
• and
• an active oxygen barrier composition blended at least one layer of said barrier resin comprising a metal and a compound structure
• wherein -E is selected from the group consisting of —C(═O)H, —CH2R1 and CHR1R2;
• wherein R1 is —O—R3R4 or —O—R4, such that R1 comprises at least two carbon atoms and does not contain a carbonyl group, and R3 and R4 are independently selected from the group consisting of alkyl, alkenyl, alkynyl, heteroalkyl, aryl and heterocyclic;
• R2 is —O—R5R6 or —O—R6, such that R2 comprises at least two carbon atoms and does not contain a carbonyl group, and R5 and R6 are independently selected from the group consisting of alkyl, alkenyl, alkynyl, aryl and heterocyclic;
• or
• R1 and R2, together with the atoms to which they are bonded, form a ring comprising from five to twenty ring atoms.

A multilayer article, which includes:

• at least one layer of a matrix resin;
• at least one layer of a barrier resin;
• a first material blended with said barrier resin and/or said matrix resin to promote adhesion between said barrier and matrix layers, said first material including an amine polymer;
• and
• an active oxygen barrier composition blended with said barrier resin and/or said matrix resin to provide an active oxygen barrier in said multilayer wall.

A multilayer article, which includes:

• at least one layer of a polyester resin selected from the group consisting of PET, PEN, blends or copolymers of PET and PEN, and regrind that consists essentially of PET, PEN, or blends or copolymers of PET and PEN;
• at least one layer of a barrier resin selected from the group consisting of EVOH, polyamide, acrylonitrile copolymers, blends of EVOH and polyamide, a blend of polyester and polyamide, nanocomposites of EVOH or polyamide and clay, blends of EVOH and an ionomer, acrylonitrile, cyclic olefin copolymers, polyglycolic acid, polyvinylidene chloride, and blends thereof;
• a polyethyleneimine blended in at least one layer of said barrier resin to promote adhesion between said barrier layer and said polyester layer;
• and an active oxygen barrier composition blended in at least one layer of said barrier resin comprising a metal and a compound structure wherein -E is selected from the group consisting of —C(═O)H, —CH2R1 and CHR1R2;
• wherein R1 is —O—R3R4 or —O—R4, such that R1 comprises at least two carbon atoms and does not contain a carbonyl group, and R3 and R4 are independently selected from the group consisting of alkyl, alkenyl, alkynyl, heteroalkyl, aryl and heterocyclic;
• R2 is —O—R5R6 or —O—R6, such that R2 comprises at least two carbon atoms and does not contain a carbonyl group, and R5 and R6 are independently selected from the group consisting of alkyl, alkenyl, alkynyl, aryl and heterocyclic;
• or R1 and R2, together with the atoms to which they are bonded, form a ring comprising from five to twenty ring atoms.

A multilayer article having the following structure:

• at least one layer of a matrix resin;
• at least one layer of a barrier resin comprising EVOH;
• and
• an imine polymer and cobalt blended with the barrier resin layer and/or the matrix resin layer.

A multilayer article having the following structure:

• at least one layer of a matrix resin;
• and
• at least one layer of a barrier resin comprising:
• EVOH,
• cobalt, and
• an additive selected from citral, citral digeranyl acetal, citral ethylene glycyl acetal, citral diethylene glycyl acetal, citral dibenzyl acetal, citral dicumylphenyl acetal, citral diethyl acetal and citral dimethyl acetal.