Crosslinked carboxylated polymer

• US 20060142476A1
• Filed: 12/29/2004
• Published: 06/29/2006
• Est. Priority Date: 12/29/2004
• Status: Abandoned Application

• Current Assignee: Weyerhaeuser Company (Weyerhauser)
• Original Assignee: Weyerhaeuser Company (Weyerhauser)
• Inventors: Weerawarna, S. Ananda
• Application Number:
  US11/026,221
• Publication Number:
  US 20060142476A1
• Time in Patent Office: Days
• US Class Current: 525/54.100
• CPC Class Codes: C08B 11/20 Post-etherification treatments of chemical or physical type, e.g. mixed etherification in two steps, including purification
• CPC Class Codes: C08B 15/005 Crosslinking of cellulose derivatives
• CPC Class Codes: C08F 20/00 Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide or nitrile thereof
• CPC Class Codes: C08F 22/00 Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical and containing at least one other carboxyl radical in the molecule; Salts, anhydrides, esters, amides, imides or nitriles thereof
• CPC Class Codes: C08F 8/32 by reaction with amines
• CPC Class Codes: C08J 3/24 Crosslinking, e.g. vulcanising, of macromolecules mechanical aspects B29C35/00; crosslinking agents C08K
• CPC Class Codes: C08J 3/246 Intercrosslinking of at least two polymers

Abstract

A crosslinked carboxylated polymer having ionic crosslinks.

Claims

1. A crosslinked carboxylated polymer, comprising a carboxylated polymer having a plurality of carboxyl groups treated with an amount of an amine compound having at least one amino group reactive toward a carboxyl group of the carboxylated polymer to form an amide bond and at least one amino group that is reactive toward a carboxyl group of the carboxylated polymer to form an ionic bond.

2. The polymer of claim 1, wherein the carboxylated polymer is a carboxyalkyl cellulose.

3. The polymer of claim 1, wherein the carboxylated polymer is a carboxymethyl cellulose or a carboxyethyl cellulose.

4. The polymer of claim 1, wherein the carboxylated polymer is selected from the group consisting of a polyacrylic acid, a polymaleic acid, a polyaspartic acid, and a copolymer of acrylic acid and acrylamide.

5. The polymer of claim 1, wherein the carboxylated polymer is a polyacrylic acid.

6. The polymer of claim 1, wherein the amine compound is a water-soluble diamine.

7. The polymer of claim 1, wherein the amine compound includes at least one of a primary amino group or a secondary amino group.

8. The polymer of claim 1, wherein the amine compound includes a primary amino group and a secondary amino group.

9. The polymer of claim 1, wherein the amine compound includes two secondary amino groups.

10. The polymer of claim 1, wherein the amine compound is a poly(oxyalkylene)diamine.

11. The polymer of claim 1, wherein the amine compound includes at least one of a tertiary amino group or a quaternary amino group.

12. The polymer of claim 1, wherein the amine compound includes a primary amino group and at least one of a tertiary amino group or a quaternary amino group.

13. The polymer of claim 1, wherein the amine compound a secondary amino group and at least one of a tertiary amino group or a quaternary amino group.

14. The polymer of claim 1, wherein the amine compound is 3-(dimethylamino)propylamine.

15. A crosslinked carboxylated polymer, comprising a carboxylated polymer having plurality of crosslinks, each of the plurality of crosslinks comprising a first bond and a second bond, wherein the first bond is an amide bond formed between a carboxyl group of the carboxylated polymer and a first amino group of a crosslinking agent, and wherein the second bond is an ionic bond formed between a carboxyl group of the carboxylated polymer and a second amino group of the crosslinking agent.

16. The polymer of claim 15, wherein the carboxylated polymer is selected from the group consisting of a carboxyalkyl cellulose, a polyacrylic acid, a polymaleic acid, a polyaspartic acid, and a copolymer of acrylic acid and acrylamide.

17. The polymer of claim 15, wherein the first amino group is selected from the group consisting of a primary amino group and a secondary amino group.

18. The polymer of claim 15, wherein the second amino group is selected from the group consisting of a secondary amino group, a tertiary amino group, and a quaternary amino group.