20104
Thermoplastic Polyurethanes From Undecylenic Acid - Based Soft Segments : Structural Features and Release Properties .
 Polyurethanes, Undecylenic Acid
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 Polyurethanes, Undecylenic Acid