公开(公告)号：US5342541A

公开(公告)日：1994-08-30

申请号：US329923

申请日：1989-03-29

申请人： Johnny Chavez, Jr. ,  Andrew S. Farnum ,  Vaughn M. Nace ,  Raymond A. Plepys ,  Randall K. Whitmire ,  Van A. Kent ,  Paul D. Bettge ,  Hans R. Friedli

发明人： Johnny Chavez, Jr. ,  Andrew S. Farnum ,  Vaughn M. Nace ,  Raymond A. Plepys ,  Randall K. Whitmire ,  Van A. Kent ,  Paul D. Bettge ,  Hans R. Friedli

IPC分类号： B01J31/08 ,  B01J31/10 ,  C07B61/00 ,  C07C41/58 ,  C07C43/11 ,  C07C45/26 ,  C07C45/51 ,  C07C47/02 ,  C08G65/04 ,  C08G65/30 ,  C08G65/34 ,  C09K3/00

CPC分类号： C08G65/30 ,  C07C45/513 ,  C08G65/04

摘要： The concentration of propenyl ethers in a hydroxy-functional polyether having oxypropylene units is reduced by a process including the step of contacting the polyether with an acid ion exchange resin for a time and at a temperature sufficient for the conversion of at least some of the propenyl ethers to propionaldehyde and in the presence of sufficient water for the conversion. Optionally, the polyether is treated with an epoxy compound in an amount sufficient to reduce the acidity of the polyol.

摘要翻译： 具有氧化丙烯单元的羟基官能聚醚中的丙烯基醚的浓度通过包括使聚醚与酸性离子交换树脂接触一段时间并在足以使至少一些丙烯基转化的温度 醚至丙醛，并在足够的水存在下进行转化。 任选地，聚醚用足以降低多元醇酸度的量的环氧化合物处理。

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.