公开(公告)号：US5095061A

公开(公告)日：1992-03-10

申请号：US554054

申请日：1990-07-13

申请人： Johnny Chavez, Jr. ,  Raymond A. Plepys ,  Craig A. McClure ,  Van A. Kent ,  Richard N. Gerstle

发明人： Johnny Chavez, Jr. ,  Raymond A. Plepys ,  Craig A. McClure ,  Van A. Kent ,  Richard N. Gerstle

IPC分类号： C08G2/28 ,  C08G65/02 ,  C08G65/30 ,  C08G65/32

CPC分类号： C08G65/30 ,  C08G65/32 ,  Y10S516/01

摘要： A process for reducing the amount of propenyl polyethers in hydroxy-functional polyethers comprising (1) contacting a neutral hydroxy-functional polyether, containing a propenyl polyether and water, and an acid catalyst soluble in the hydroxy-functional polyether under reaction conditions sufficient to convert at least a portion of the propenyl polyether to propionaldehyde; (2) contacting the product of step (1) and an epoxy compound to substantially scavenge the acid catalyst; and (3) stripping the product of step (2) to substantially remove the epoxy compound the the propionaldehyde.The resulting hydroxy-functional polyethers contain reduced amounts of propenyl polyethers and can therefore be used to prepare polyurethane foams having a reduced tendency to discoloration.