12471
In addition to the structural differences , the purity of the cyanate esters has a significant effect on both the cure chemistry and final Tg of the materials .
 Chemical: cyanate esters
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: cyanate esters 
Answer:
 Chemical: cyanate esters