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