| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide biorenewable regents, such as colorants with a lower negative impact on the environment and on health with improved thermal and temporal stability and lightfastness.SOLUTION: The present invention provides a polyester with a light-stable, heat-stable and oxidation-resistant carmine (an aluminum salt of carminic acid which is 7-α-D-glucopyranosyl-9,10-dihydro-3,5,6,8-tetrahydroxy-1-methyl-9,10-dioxoanthracenecarboxylic acid) as a polyol reagent.</p> |
