# US 8,771,578 B2 · Acidified polyamidoamine adhesives, method of manufacture, and use for creping and ply bond applications

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- Number: US 8,771,578 B2
- Document ID: US8771578B2
- Status: Granted
- Kind: B2
- Application number: 13/117,202
- Filed: 2011-05-27
- Published: 2011-09-15
- Granted: 2014-07-08
- Earliest claimed: 2007-04-17
- Assignees: Kemira Chemicals, Inc.
- Applicants: Clayton J. Campbell
- Inventors: Clayton J. Campbell
- Web page: https://patentgrep.com/patent/US8771578B2

## CPC

- D21H 17/55: Polyamides; Polyaminoamides; Polyester-amides
- B31F 1/12: Crêping
- C08G 73/02: Polyamines
- C08G 73/0286: {Preparatory process from polyamidoamines and epihalohydrins}
- C09J 179/02: Polyamines
- D21H 17/36: Polyalkenyalcohols; Polyalkenylethers; Polyalkenylesters
- D21H 27/002: {Tissue paper; Absorbent paper (D21H21/22, D21H27/02, D21H27/20 take precedence; toilet paper A47K10/00; absorbent pads for physiological fluids A61L15/16; making on paper-making machines D21F11/00)}
- D21H 27/32: with materials applied between the sheets (attaching together paper or cardboard sheets B31F5/00; adhesives C09J)
- D21H: PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- B31F: MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER (making layered products not composed wholly of paper or cardboard B32B)
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C09J: ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES (preparation of glue or gelatine C09H)

## Abstract

A paper adhesive composition includes a cationic non-crosslinked acidified solution of a polyamidoamine with the repeating units wherein n≧1; m=1 or 2; X−m is chloride, bromide, iodide, sulfate, bisulfate, nitrate, oxalate, alkyl carboxylate, aryl carboxylate, hydrogen phosphate, dihydrogen phosphate, alkyl sulfonate, aryl sulfonate, or a combination comprising at least one of the foregoing anions; R1 is a divalent aliphatic, cycloaliphatic, or araliphatic group having from 1 to 24 carbon atoms; R2 is hydrogen or a monovalent aliphatic, cycloaliphatic, or araliphatic group having from 1 to 24 carbon atoms; and R3 is a divalent hydrocarbon radical derived from a dibasic carboxylic acid. Also disclosed are methods of creping paper with the composition.

## Claims

### Claim 1

A method of creping paper, comprising:
applying to a rotating cylinder a polymer solution, wherein the polymer solution is a mixture consisting of 0.1 to 10 wt % of a cationic non-crosslinked polyamidoamine and water, wherein the cationic non-crosslinked polyamidoamine is free of epihalohydrin, and wherein the mixture has a pH of less than 6.9;
pressing a tissue paper web against the rotating cylinder to effect adhesion of the tissue paper web to a surface of the cylinder using the cationic non-crosslinked polyamidoamine; and
dislodging the tissue paper web from the rotating cylinder by contact with a doctor blade to form the creping paper.

### Claim 2 (depends on 1)

The method of claim 1, wherein the cationic non-crosslinked polyamidoamine has linear repeating units of:
wherein n≧1; m=1 or 2; k−m is chloride, bromide, iodide, sulfate, bisulfate, nitrate, oxalate, alkyl carboxylate, aryl carboxylate, hydrogen phosphate, dihydrogen phosphate, alkyl sulfonate, aryl sulfonate, or a combination comprising at least one of the foregoing anions; R1 is a divalent aliphatic, cycloaliphatic, or araliphatic group having from 1 to 24 carbon atoms; R2 is hydrogen or a monovalent aliphatic, cycloaliphatic, or araliphatic group having from 1 to 24 carbon atoms; and R3 is a divalent hydrocarbon radical derived from a dibasic carboxylic acid.

### Claim 3 (depends on 2)

The method of claim 2, wherein n=1, k−m is bisulfate, R1 is ethylene, R2 is hydrogen, and R3 is butylene.

### Claim 4

A method of creping paper, comprising:
spraying to a rotating cylinder a polymer solution, wherein the polymer solution is a mixture consisting of: 0.1 to 10 wt % of a cationic non-crosslinked polyamidoamine and water, wherein the mixture has a pH of less than 6.9, and wherein the polymer solution is free of epi-polyamide and epihalohydrin;
pressing a tissue paper web against the rotating cylinder to effect adhesion of the tissue paper web to a surface of the cylinder using the cationic non-crosslinked polyamidoamine; and
dislodging the tissue paper web from the rotating cylinder by contact with a doctor blade to form the creping paper.

### Claim 5 (depends on 4)

The method of claim 4, wherein the cationic non-crosslinked polyamidoamine has linear repeating units of:
wherein n≧1; m=1 or 2; k−m is chloride, bromide, iodide, sulfate, bisulfate, nitrate, oxalate, alkyl carboxylate, aryl carboxylate, hydrogen phosphate, dihydrogen phosphate, alkyl sulfonate, aryl sulfonate, or a combination comprising at least one of the foregoing anions; R1 is a divalent aliphatic, cycloaliphatic, or araliphatic group having from 1 to 24 carbon atoms; R2 is hydrogen or a monovalent aliphatic, cycloaliphatic, or araliphatic group having from 1 to 24 carbon atoms; and R3 is a divalent hydrocarbon radical derived from a dibasic carboxylic acid.

### Claim 6 (depends on 5)

The method of claim 5, wherein n=1, k−m is bisulfate, R1 is ethylene, R2 is hydrogen, and R3 is butylene.