Surface active polycarbodiimides and their dispersions

Claim 2

A surface-active polycarbodiimide of the formula wherein R is a residue of a hydrophobic organic compound containing at least two carbodiimide groups; R' is. a residue of an organic compound having a hydrophilic segment and at least one functional group capable of reacting with a carbodiimide group; and X is a group formed by the reaction of a said carbodiimide group with a said functional group, preferably selected from the group consisting of uretidinone, diazetidine thione, N-acyl urea, guanidine, isourea, isothiourea, and carbodiimide.

Claim 3

A surface-active polycarbodiimide of Claim 1 wherein R' is a residue of a hydroxyl-containing poly-(alkylene oxide)-based surfactant, preferably in alkoxy-capped, the number of alkylene oxide repeating unites (n) preferably being from 15 to 120, and especially the poly-(alkylene oxide)-based sufactant is a methoxypolyethylene glycol.

Claim 4

A surface-active polycarbodiimide of Claim 1 wherein R is a residue of a monodisperse, branched polycarbodiimide, which preferably has the generalized structure: wherein: M and Q may be the same or different and each represents the residue of a compound adapted to function as a site for branching; R and R' may be the same or different and represent an alkyl (including cycloalkyl) or aryl, radical or diradical which may be or contain cyano, nitro, halo, alkyl sulfide, dialkylaminoalkyl, substituted silane, alkoxy, and aryloxy moieties, and other substituted species of any of the foregoing; R" represents the same of different alkyl (including cycloalkyl) or aryl diradical which may contain cyano, nitro, halo, alkyl sulfide, dialkylamino, substituted silane, alkoxy, and aryloxy moieties, and other substituted species of any of the foregoing; and wherein d is 0 to about 12, n is 0 to about 6, m is 3 to about 5, p is 1 to about 6, and q is 0 to about 4.

Claim 5

A surface-active polycarbodiimide of Claim 3 wherein the monodisperse, branched pofycarbodiimide has the generalized structure: Wherein: R', R 2 , R 3 and R 4 may be the same or different and represent organic residues which do not substantially interfere with the multifunctional carbodiimide for its intended purpose; and D is an organic residue; and r, s, t, x and y are 1 to about 6, or the generalized structure: wherein: R T , R 2 , and R 4 may be the same or different. and represent alkyl groups having 1 to about 12 carbon atoms; R S and R 6 may be the same or different and represent hydrogen, alkyl (including cycloalkyl), aryl, aralkyl, alkaryl, heterocyclic, cyano, nitro, halo, alkyl sulfide, dialkylaminoalkyl, silane, alkoxy, and aryloxy groups, and substituted species of any of the foregoing; Z is the residue of a compound adapted.to function as a site for branching; and wherein a, b, and c are 0 to about 12.

Claim 6

A surface-active polycarbodiimide of claim 3 wherein the monodisperse, branched polycarbodiimide is 1,3,6-tri-(N-isopropyt-N'-methylene carbodiimide) hexane, 1,3,6-tri-(N-cyclohexyl-N'-methylene carbodiimide) hexane or 1,3,6-tri-(N-n-butyl-N'methytene carbodiimide) hexane. A surface-active polycarbodiimide of Claim 1 wherein R is a residue of polydisperse, linear polycarbodiimide, preferably a residue of a polyfunctional polycarbodiimide(PCDI) derived from the reaction of mono-, di-, and tri-cycloaliphatic or saturated aliphatic isocyanates wherein the cycloaliphatic moieties contain from 5 to about 7 carbons and can be substituted with alkyl having 1 to about 6 carbons, and oxygen, and the saturated aliphatic moieties contain from 1 to about 18 carbons, wherein the mono-and triisocyanates are optional.

Claim 7

An emulsion comprising an admixture in aqueous medium of: (a) a hydrophobic polycarbodiimide, and (b) a surface-active polycarbodiimide according to anyone of claims 1 to 6 and optionally (c) a supplemental sufactant.

Claim 8

A cross-linkable composition comprising an admixture of (a) an emulsion of a carboxyl-containing resin or neutralized, carboxylated, water-soluble organic resin, and (b) a surface-active polycarbodiimide according to anyone of claims 1 to 6 and/or (c) an emulsion according to Claim 7, and optionally (d) a supplemental surfactant

Claim 12

A method of making a cross-linkable composition comprising mixing: (a) an emulsion of a carboxyl-containing resin, (b) a surface-active polycarbodiimide according to anyone of claims 1 to 6 and/or (c) an emulsion according to claim 7

Claim 14

A cross-linked product formed by the method of claim 12.

Claim 15

Claims for the following Contracting State : AT

Claim 18

A method of claim 1 wherein R' is a residue of a hydroxyl-containing poly-(alkylene oxide)-based surfactant, preferably is alkoxy-capped, the number of alkylene oxide repeating unites (n) preferably being from 15 to 120, and especially the poly-(alkylene oxide)-based sufactant is a methoxypolyethylene glycol.

Claim 19

A method of claim 1 wherein R is a residue of a monodisperse, branched polycarbodiimide, which preferably has the generalized structure: wherein: M and Q may be the same or different and each represents the residue of a compound adapted to function as a site for branching; R and R' may be the same or different and represent an alkyl (including cycloalkyl) or aryl, radical or diradical which may be or contain cyano, nitro, halo, alkyl sulfide, dialkylaminoalkyl, substituted silane, alkoxy, and aryloxy moieties, and other substituted species of any of the foregoing; R" represents the same or different alkyl (including cycloalkyl) or aryl diradical which may contain cyano, nitro, halo, alkyl sulfide, dialkylamino, substituted silane, alkoxy, and aryloxy moieties, and other substituted species of any of the foregoing; and wherein d is 0 to about 12, n is 0 to about 6, m is 3 to about 5, p is 1 to about 6, and q is 0 to about 4.

Claim 20

A method of Claim 3 wherein the monodisperse, branched polycarbodiimide has the generalized structure: Wherein: R', R 2 , R3 and R 4 may be the same or different and represent organic residues which do not substantially interfere with the multifunctional carbodiimide for its intended purpose; and D is an organic residue; and r, s, t, x and y are 1 to about 6, or the generalized structure: wherein : R', R 2 , and R * may be the same or different and represent alkyl groups having 1 to about 12 carbon atoms; R S and R 6 may be the same or different and represent hydrogen, alkyl (including cycloalkyl), aryl, aralkyl, alkaryl, heterocyclic, cyano, nitro, halo, alkyl sulfide, dialkylaminoalkyl, silane, alkoxy, and aryloxy groups, and substituted species of any of the foregoing; Z is the residue of a compound adapted to function as a site for branching; and wherein a, b, and c are 0 to about 12.

Claim 21

A method of claim 3 wherein the monodisperse, branched polycarbodiimide is 1,3,6-tri-(N-isopropyl-N'-methylene carbodiimide) hexane, 1,3,6-tri(N-cyclohexyl-N'-methylene carbodiimide) hexane or 1,3,6-tri-(N-n-butyl-N'-methylene carbodiimide) hexane.

Claim 22

A method of Claim 1 wherein R is a residue of a polydisperse, linear polycarbodiimide, preferably a residue of a polyfunctional polycarbodiimide(PCDI) derived from the reaction of mono-, di-, and tri-cycloaliphatic or saturated aliphatic isocyanates wherein the cycloaliphatic moieties contain from 5 to about 7 carbons and can be substituted with alkyl having 1 to about 6 carbons, and oxygen, and the saturated aliphatic moieties contain from 1 to about 18 carbons, wherein the mono-and triisocyanates are optional.

Claim 23

An emulsion comprising an admixture in aqueous medium of: (a) a hydrophobic polycarbodiimide, and (b) a surface-active polycarbodiimide according to anyone of claims 1 to 6 and optionally (c) a supplemental sufactant

Claim 24

A cross-linkable composition comprising an admixture of (a) an emulsion of a carboxyl-containing resin or neutralized, carboxylated, water-soluble organic resin, and (b) a surface-active polycarbodiimide prepared according to anyone of claims 1 to 6 and/or (c) an emulsion according to Claim 7, and optionally (d) a supplemental surfactant.

Claim 26

A method of making a cross-linkable composition comprising mixing: (a) an emulsion of a carboxyl-containing resin, (b) a surface-active polycarbodiimide according to anyone of claims 1 to 6 and/or (c) an emulsion according to claim 7.

Claim 28

A cross-linked product formed by the method of claim 12.