[미국특허]
Purification of polyols prepared using double metal cyanide complex catalysts
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C07C-041/34
C07C-041/44
출원번호
US-0276275
(1988-11-25)
발명자
/ 주소
Harper Stephen D. (West Chester PA)
출원인 / 주소
Arco Chemical Technology, Inc. (Wilmington DE 02)
인용정보
피인용 횟수 :
33인용 특허 :
3
초록▼
A method for removing double metal cyanide complex catalyst from polyether polyols is disclosed which uses alkali metal compounds and phosphorous compounds to precipitate the residual catalyst, which may then be removed by filtration. In one embodiment, a propylene oxide polyol is treated with sodiu
A method for removing double metal cyanide complex catalyst from polyether polyols is disclosed which uses alkali metal compounds and phosphorous compounds to precipitate the residual catalyst, which may then be removed by filtration. In one embodiment, a propylene oxide polyol is treated with sodium metal dispsersion, capped with ethylene oxide, treated with magnesium silicate, and then filtered to remove at least a portion of the catalyst. Substantially complete catalyst removal is then achieved by treating the polyol with hypophosphorous or phosphorous acid to precipitate the remaining solubilized double metal cyanide complex catalyst residue, neutralizing the excess acid with magnesium silicate, and filtering.
대표청구항▼
A process for purifying a polyol containing a double metal cyanide complex catalyst which comprises the steps of: (a) treating the polyol with at least one alkali metal compound selected from the group consisting of alkali metals, alkali metal hydroxides, alkali metal hydrides, and alkali metal alko
A process for purifying a polyol containing a double metal cyanide complex catalyst which comprises the steps of: (a) treating the polyol with at least one alkali metal compound selected from the group consisting of alkali metals, alkali metal hydroxides, alkali metal hydrides, and alkali metal alkoxides in an amount sufficient to convert the double metal cyanide complex catalyst into an insoluble portion and a soluble portion and to convert at least a portion of the polyol hydroxyl groups to alkoxide groups, (b) filtering the treated polyol to remove the insoluble portion, (c) further treating the filtered polyol with a sufficient amount of at least one phosphorous compound to convert the soluble portion of the double metal cyanide complex catalyst produced in step (a) to a second insoluble portion, said phosphorous compound selected from the group consisting of pyrophosphorous acid, hypophosphorous acid, phosphorous acid, and compounds having the formula [Figure] wherein R is linear or branched alkyl, phenyl, or substituted phenyl, X is Cl or Br, x is 0, 1, 2, or 3, y is 0, 1, or 2, z is 0, 1, 2, or 3, and the sum of x+y+z is 3, with the proviso that the filtered polyol additionally be treated with water when the phosphorous compound is pyrophosphorous acid or when x is 1, 2, or 3, or z is 1, 2, or 3, (d) filtering the phosphorous compound-treated polyol to remove the second insoluble portion of the double metal cyanide complex catalyst produced in step (c), and (e) recovering the resulting purified polyol
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (3)
Herold Robert J. (Akron OH) Bingham Robert E. (Akron OH), Method for treating polypropylene ether and poly-1,2-butylene ether polyols.
Harper Stephen D. (West Chester PA) Harris Stephen H. (West Chester PA), Purification of polyols prepared using double metal cyanide complex catalysts.
Clement,Katherine Sue; Lee,Kenneth Michael; Petroff,Lenin James; Rauscher,Wanda Wells; Wehmeyer,Richard Michael; Whitmarsh,Robert Howard, Certain silicone polyethers, methods for making them and uses.
Ahn, Jun Tae; Lee, Sang Hyun; Jeon, Young Chan; Park, Sang Wook; Park, Chang Ha; Park, In Ha, Double metal cyanide catalyst having a controlled reactivity for preparing a polyol and preparation thereof.
Clement, Katherine S.; Walker, Louis L.; Wehmeyer, Richard M.; Whitmarsh, Robert H.; Molzahn, David C.; Dianis, William P.; Laycock, David E.; Weston, John W.; Elwell, Richard J., Polymerization of ethylene oxide using metal cyanide catalysts.
Katherine S. Clement ; Louis L. Walker ; Richard M. Wehmeyer ; Robert H. Whitmarsh ; David C. Molzahn ; William P. Dianis ; David E. Laycock CA, Polymerization of ethylene oxide using metal cyanide catalysts.
Grosch, Georg Heinrich; Harre, Kathrin; Erbes, Jörg; Lorenz, Reinhard; Bauer, Stephan; Ostrowski, Thomas; Baum, Eva; Junge, Dieter; Dexheimer, Edward Michael, Suspension of multimetal cyanide compounds, their preparation and their use.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.