Cured polymeric coating material, coated substrate, and process of forming

Claim 2

A cured polymeric film material comprising a long chain highly cross-linked aromatic polymer film, said polymer comprising imide groups, amide groups and amine groups and being substantially free of carboxyl groups.

Claim 3

A curved polymeric film material as defined in claim 1 wherein said curved polymer is produced by curing a thin film coating of the reaction product of an aromatic diamine and an aromatic dianhydride in the molar ratio of about 2 to 1 respectively.

Claim 4

A cured polymeric film material as defined in claim 2 wherein said aromatic diamine is selected from the group consisting of diamines having the general formula: H.sub.2 N--R'--NH.sub.2 wherein R' is a divalent radical selected from the group consisting of ##STR12## wherein R''' and R'''' are an alkyl or an aryl group having 1 to 6 carbon atoms, n is an integer of from 1 to 4 and m has a value of 0, 1 or more and ##STR13## wherein R" is selected from the group consisting of an alkylene chain having 1-3 carbon atoms, ##STR14## wherein R''' and R'''' are as above-defined and x is an integer of at least 0; and said aromatic dianhydride is selected from the group consisting of dianhydrides having the general formula: ##STR15## where R is a tetravalent radical containing at least one ring of six carbon atoms and having benzenoid unsaturation, each pair of carboxyl groups being attached to different adjacent carbon atoms.

Claim 5

A cured polymeric film material as defined in claim 2 wherein said aromatic diamine is selected from the group consisting of 4,4'-diaminodiphenyl methane, 4,4'-diaminodiphenyl ether, and 1,3-diamino benzene and mixtures thereof, and said aromatic dianhydride is selected from the group consisting of 3,3',4,4'-benzophenonetetracarboxylic dianhydride and 4,4'-(2-acetoxy-1,3-glyceryl)-bis-anhydro trimellitate and mixtures thereof.

Claim 6

The process of forming a polymeric coating on a substrate comprising the steps of: (a) reacting a mixture of an aromatic diamine and an aromatic dianhydride in the molar ratio of two-to-one respectively in an inert solvent system at a temperature below that at which imidization occurs to form a diamide-diacid-diamine monomer coating solution; (b) applying a thin film coating of said monomer to a substrate; and (c) curing said monomer coating to form a highly cross-linked polymeric coating on said substrate.

Claim 7

The process of forming a polymeric coating on a substrate comprising the steps of: (a) reacting a mixture of an aromatic diamine and an aromatic dianhydride in the molar ratio of two-to-one respectively in an inert solvent system at a temperature below that at which imidization occurs to form a diamide-diacid-diamine monomer coating solution; (b) applying a thin film coating of said monomer to a substrate; and (c) curing said monomer coating to form a highly cross-linked polymeric coating on said substrate.

Claim 8

The process of forming a polymeric coating on a substrate comprising the steps of: (a) reacting a mixture of an aromatic diamine and an aromatic dianhydride in the molar ratio of two-to-one respectively in an inert anhydrous solvent at a temperature below that at which imidization occurs to form a diamide-diacid-diamine monomer; (b) adding to the monomer solution a volatile base; (c) adding water to the monomer solution to form an aqueous-organic monomer coating medium; (d) applying a thin film coating of the monomer from the coating medium to the substrate; and (e) curing the monomer coating at a temperature sufficient to form a highly cross-linked polymeric coating on the substrate.

Claim 9

The process of forming a polymeric coating on a substrate comprising the steps of: (a) reacting a mixture of an aromatic diamine and an aromatic dianhydride in the molar ratio of two-to-one respectively in an inert anhydrous solvent at a temperature below that at which imidization occurs to form a diamide-diacid-diamine monomer; (b) adding to the monomer solution a volatile base; (c) adding water to the monomer solution to form an aqueous-organic monomer coating medium; (d) applying a thin film coating of the monomer from the coating medium to the substrate; and (e) curing the monomer coating at a temperature sufficient to form a highly cross-linked polymeric coating on the substrate.

Claim 10

The process of forming a polymeric coating on a substrate comprising the steps of: (a) reacting a mixture of p,p-methylene dianiline and 3,3',4,4' benzophenonetetracarboxylic dianhydride, in the molar ratio of two-to-one respectively, in N-methyl-2-pyrrolidone at a temperature below about 70° C. to form a diamino amide acid reaction product; adding to the reaction solution an amount of ammonia sufficient to make the reaction product water soluble; (c) adding water to the reaction solution to form an aqueous-organic coating medium; (d) applying a coating of the reaction products to the substrate; and (e) curing the reaction product coating at a temperature of between about 150° C. and about 250° C. for a time sufficient to form a highly cross-linked polymeric coating on the substrate.

Claim 11

The process of forming a polymeric coating on a substrate comprising the steps of: (a) reacting a mixture of p,p-methylene dianiline and 3,3',4,4' benzophenonetetracarboxylic dianhydride, in the molar ratio of two-to-one respectively, in N-methyl-2-pyrrolidone at a temperature below about 70° C. to form a diamino amide acid reaction product; adding to the reaction solution an amount of ammonia sufficient to make the reaction product water soluble; (c) adding water to the reaction solution to form an aqueous-organic coating medium; (d) applying a coating of the reaction products to the substrate; and (e) curing the reaction product coating at a temperature of between about 150° C. and about 250° C. for a time sufficient to form a highly cross-linked polymeric coating on the substrate.

Claim 12

A substrate having a polymeric highly crosslinked coating thereon produced by the process of preparing a coating medium by reacting in a water miscible inert organic solvent an aromatic diamine and an aromatic dianhydride in the molar ratio of two-to-one respectively and at a temperature below that at which imidization occurs to form a reaction product, adding a volatile base, and adding water to form an aqueous-organic coating medium of said reaction product; applying said coating medium to said substrate to form a thin film coating of said reaction product on said substrate; and heat curing said thin film coating of said reaction product to form said highly cross-linked polymeric coating on said substrate.

Claim 13

A substrate having a polymeric highly crosslinked coating thereon produced by the process of preparing a coating medium by reacting in a water miscible inert organic solvent an aromatic diamine and an aromatic dianhydride in the molar ratio of two-to-one respectively and at a temperature below that at which imidization occurs to form a reaction product, adding a volatile base, and adding water to form an aqueous-organic coating medium of said reaction product; applying said coating medium to said substrate to form a thin film coating of said reaction product on said substrate; and heat curing said thin film coating of said reaction product to form said highly cross-linked polymeric coating on said substrate.

Claim 14

A substrate having a cured polymeric film material coating thereon of the composition defined in claim 1.

Claim 15

A substrate having a cured polymeric film material coating thereon of the composition defined in claim 2.

Claim 16

A substrate having a cured polymeric film material coating thereon of the composition defined in claim 3.

Claim 17

A substrate having a cured polymeric film material coating thereon of the composition defined in claim 4.

Claim 18

A cured polymeric film material comprising a long chain highly cross-linked aromatic polymer film, said polymer comprising imide groups, amide groups and amine groups, and being substantially free of carboxyl groups, and polymer film being produced by curing a thin film coating of the reaction product of an aromatic diamine and a tetracarboxylic compound in the molar ratio of about 2 to 1 respectively.

Claim 19

A cured polymeric film material comprising a long chain highly cross-linked aromatic polymer film, said polymer comprising imide groups, amide groups and amine groups, and being substantially free of carboxyl groups, and polymer film being produced by curing a thin film coating of the reaction product of an aromatic diamine and a tetracarboxylic compound in the molar ratio of about 2 to 1 respectively.

Claim 20

A polymeric film as defined in claim 13 wherein said aromatic diamine is selected from the group consisting of diamines having the general formula: H.sub.2 N-R'-NH.sub.2 wherein R' is a divalent radical selected from the group consisting of ##STR16## wherein R''' and R'''' are an alkyl or an aryl group having 1 to 6 carbon atoms, n is an integer of from 1 to 4 and m has a value of 0, 1 or more and ##STR17## wherein R" is selected from the group consisting of an alkylene chain having 1-3 carbon atoms, ##STR18## wherein R''' and R'''' are as above-defined and x is an integer of at least 0; and said tetracarboxylic compound is an aromatic dianhydride selected from the group consisting of dianhydrides having the general formula: ##STR19## where R is a tetravalent radical containing two benzene rings joined by a non-aromatic non-cyclic group, each pair of carboxyl groups being attached to different adjacent carbon atoms of a single separate ring.

Claim 21

A polymeric film as defined in claim 13 wherein said aromatic diamine is selected from the group consisting of 4,4'-diaminodiphenyl methane, 4,4'-diaminodiphenyl ether, and 1,3-diamino benzene and mixtures thereof, and said aromatic dianhydride is selected from the group consisting of 3,3',4,4'-benzophenonetetracarboxylic dianhydride and 4,4'-(2-acetoxy-1,3-glyceryl)-bis-anhydro trimellitate and mixtures thereof.

Claim 22

The process of forming a polymeric coating on a substrate comprising the steps of: (a) reacting a mixture of an aromatic diamine and a tetracarboxylic compound in the molar ratio of two-to-one respectively in an inert solvent system at a temperature below that at which imidization occurs to form a diamide-diacid-diamine monomer coating solution; (b) applying a thin film coating of said monomer to a substrate; and (c) curing said monomer coating to form a highly cross-linked polymeric coating on said substrate.

Claim 23

The process of forming a polymeric coating on a substrate comprising the steps of: (a) reacting a mixture of an aromatic diamine and a tetracarboxylic compound in the molar ratio of two-to-one respectively in an inert solvent system at a temperature below that at which imidization occurs to form a diamide-diacid-diamine monomer coating solution; (b) applying a thin film coating of said monomer to a substrate; and (c) curing said monomer coating to form a highly cross-linked polymeric coating on said substrate.

Claim 24

The process of forming a polymeric coating on a substrate comprising the steps of: (a) reacting a mixture of an aromatic diamine and a tetracarboxylic compound in the molar ratio of two-to-one respectively in an inert anhydrous solvent at a temperature below that at which imidization occurs to form a diamide-diacid-diamine monomer; (b) adding to said monomer solution a volatile base; (c) adding water to said monomer solution to form an aqueous-organic monomer coating medium; (d) applying a thin film coating of said monomer from said coating medium to a substrate; and (e) curing said monomer coating at a temperature sufficient to form a highly cross-linked polymeric coating on said substrate.

Claim 25

The process of forming a polymeric coating on a substrate comprising the steps of: (a) reacting a mixture of an aromatic diamine and a tetracarboxylic compound in the molar ratio of two-to-one respectively in an inert anhydrous solvent at a temperature below that at which imidization occurs to form a diamide-diacid-diamine monomer; (b) adding to said monomer solution a volatile base; (c) adding water to said monomer solution to form an aqueous-organic monomer coating medium; (d) applying a thin film coating of said monomer from said coating medium to a substrate; and (e) curing said monomer coating at a temperature sufficient to form a highly cross-linked polymeric coating on said substrate.

Claim 26

A substrate having a polymeric highly cross-linked coating thereon produced by the process of preparing a coating medium by reacting in a water miscible inert organic solvent an aromatic diamine and a tetracarboxylic compound in the molar ratio of two-to-one respectively and at a temperature below that at which imidization occurs to form a reaction product, adding a volatile base, and adding water to form an aqueous-organic coating medium of said reaction product; applying said coating medium to said substrate to form a thin film coating of said reaction product on said substrate; and heat curing said thin film coating of said reaction product to form said highly cross-linked polymeric coating on said substrate.

Claim 27

A substrate having a polymeric highly cross-linked coating thereon produced by the process of preparing a coating medium by reacting in a water miscible inert organic solvent an aromatic diamine and a tetracarboxylic compound in the molar ratio of two-to-one respectively and at a temperature below that at which imidization occurs to form a reaction product, adding a volatile base, and adding water to form an aqueous-organic coating medium of said reaction product; applying said coating medium to said substrate to form a thin film coating of said reaction product on said substrate; and heat curing said thin film coating of said reaction product to form said highly cross-linked polymeric coating on said substrate.