In the synthesis of Aspirin experiment, Aspirin was made from the reaction between salicylic acid, acetic anhydride; phosphoric acid was also used as the catalyst.
The overall reaction of this is
C4H6O3(l) + C7H6O3(s) --> C9H8O4(s) + C2H4O2(l)
where C9H8O4 is the Aspirin and C2H4O2 is the acetic acid.
I found that the salicylic acid can also react with other salicylic acid and from some sort of polymer.
I'm just wondering what is the overall chemical reaction for the making of this polymer.
C7H6O3(s) + C7H6O3(s) --> ?
Are the reagents listed above correct and what is(are) the products?
Thank you very much.