Biobased Aromatic-Aliphatic Polyols from Cardanol by Thermal Thiol-Ene Reaction  

作　　者：Maha LShrestha Mihail Ionescu Xianmei Wan Nikola Bilic′ Zoran SPetrovic′ Tom Upshaw 

机构地区：[1]Pittsburg State University,Kansas Polymer Research Center,1701 South Broadway,Pittsburg,Kansas,66762,USA [2]Chevron Phillips Chemical Company LP,Bartlesville Technology Center,Bartlesville,Oklahoma,74003-6670,USA

出　　处：《Journal of Renewable Materials》2018年第1期87-101,共15页可再生材料杂志（英文）

摘　　要：Cardanol is a natural phenol which is obtained from high vacuum distillation of cashew nut shell liquid.It contains a hydrocarbon chain of 15 carbon atoms in the meta position,either with one,two or three nonconjugated double bonds.This article describes thermal thiol-ene reaction to synthesize new cardanol-based polyols for polyurethanes with aromatic-aliphatic structure.Phenolic hydroxyl group was blocked by alkoxylation and 2-mercaptoethanol was added to the double bonds of propoxylated cardanol.The resultant product is a mixture of polyols that may contain one,two,three or four hydroxyl groups,as a function of the number of double bonds reacted with 2-mercaptoethanol.Similar polyols,but with much higher functionality,were also synthesized from condensation of cardanol-based novolacs with formaldehyde.These cardanolbased polyols were further utilized to prepare rigid polyurethane foams(PUs)with excellent physical and mechanical properties,useful for various applications in chemical and food industries.

关 键 词：THIOL-ENE MERCAPTANS cashew nut shell liquid polyurethanes 

分 类 号：O62[理学—有机化学]