Carmine colorants

• US 10,184,024 B2
• Filed: 06/18/2013
• Issued: 01/22/2019
• Est. Priority Date: 06/18/2013
• Status: Active Grant

• Current Assignee: Xerox Corporation (Xerox Holdings Corp.)
• Original Assignee: Xerox Corporation (Xerox Holdings Corp.)
• Inventors: Farrugia, Valerie M, Birau, Maria, Iftime, Gabriel
• Primary Examiner(s): Stanley, Jane L
• Application Number:
  US13/920,164
• Publication Number:
  US 20140371419A1
• Time in Patent Office: 2,044 Days
• Field of Search: 524600, 528127
• CPC Class Codes: C08G 63/668 derived from polycarboxylic acids and polyhydroxy compounds
• CPC Class Codes: C08G 63/68 Polyesters containing atoms other than carbon, hydrogen and oxygen C08G63/64 takes precedence

Abstract

The present disclosure provides a modified carmine which can comprise polymers, such as, polyesters, or conjugating molecules, such as, polycarboxylic acids.

Claims

1. A compound comprising:

a polymer having a backbone; and

a modified carmine;

wherein the modified carmine comprises at least one carmine moiety and at least one conjugating molecule; and

wherein the modified carmine is (a) an integral part of the polymer backbone;

or (b) wherein the modified carmine is covalently attached to a reaction site on the polymer.

2. The compound of claim 1,

wherein the carmine moiety and the conjugating molecule are provided in a ratio of carmine moiety:

conjugating molecule of from 2;

1 to 100;

1.

3. The compound of claim 1,

the carmine moiety and the conjugating molecule are provided in a ratio of carmine moiety:

conjugating molecule of from 1;

2 to 1;

100.

4. The compound of claim 1, wherein the polymer is a polyester.

5. The compound of claim 1, wherein the polymer is a biodegradable polyester.

6. The compound of claim 1, wherein the modified carmine comprises plural conjugating molecules and plural carmine moieties that form an aggregate or network.

7. The compound of claim 1, wherein the modified carmine is a conjugate of carmine moiety and a conjugating molecule wherein said conjugating molecule comprises a polycarboxylic acid.

8. The compound of claim 1, wherein the modified carmine is a conjugate of carmine moiety and a conjugating molecule wherein said conjugating molecule comprises succinic acid.

9. The compound of claim 1, wherein the modified carmine is a conjugate of carmine moiety and a conjugating molecule wherein said conjugating molecule comprises azelaic acid.

10. The compound of claim 1, wherein the modified carmine is a conjugate of carmine moiety and a conjugating molecule wherein said conjugating molecule comprises a carboxylic acid.

11. The compound of claim 1, wherein the modified carmine is a conjugate of carmine and a conjugating molecule comprising plural molecules of a polycarboxylic acid.

12. The compound of claim 11, wherein said polycarboxylic acid comprises succinic acid.

13. The compound of claim 11, wherein said polycarboxylic acid comprises azelaic acid.

14. The compound of claim 1, wherein the modified carmine is a conjugate of carmine moiety and a conjugating molecule comprising plural molecules of a carboxylic acid.

15. The compound of claim 1, wherein the polymer is a polyester comprising one or more of succinic acid, azelaic acid and isosorbide.

16. The compound of claim 1, wherein the modified carmine is orange when in a medium of about pH 3,

wherein the modified carmine is red when in a medium of about pH 5.5, or

wherein the modified carmine is purple when in a medium of about pH 7.