23076
Polyurethane elastomers coating were synthesised by using typical diisocyanates , polyether and polyester polyols and HO - tertiary amines or diols as a chain extenders .
 Chemical: Polyurethane; Chemical: diisocyanates; Chemical: polyether; Chemical: polyester polyols; Chemical: HO; Chemical: tertiary amines; Chemical: diols
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: Polyurethane; Chemical: diisocyanates; Chemical: polyether; Chemical: polyester polyols; Chemical: HO; Chemical: tertiary amines; Chemical: diols