摘要:
A method of forming a polyethercarbonate polyol enhances incorporation of CO2 into the polyethercarbonate polyol. The method provides a catalyst including a multimetal cyanide compound. The multimetal cyanide compound has an ordered structure defined by a cationic catalytic center and an anionic backbone with the anionic backbone spatially arranged about the cationic catalytic center. The anionic backbone is modified with a supplemental anionic spacer to affect the spatial arrangement and catalytic activity of the cationic catalytic center. The supplemental anionic spacer is incorporated into the multimetal cyanide compound to establish the general formula, M1a[M2b(CN)cMd3Xe]f, wherein M1, M2, and M3 are various metal ions and X is the supplemental anionic spacer. An H-functional initiator, an alkylene oxide, and CO2 are reacted in the presence of the modified multimetal cyanide compound to form the polyethercarbonate polyol.
摘要翻译:形成聚醚碳酸酯多元醇的方法增强了CO 2 CO 2向聚醚碳酸酯多元醇中的引入。 该方法提供了包含多金属氰化合物的催化剂。 多金属氰化合物具有由阳离子催化中心和阴离子主链定义的有序结构,阴离子主链在阳离子催化中心周围空间布置。 阴离子主链用补充阴离子间隔物修饰以影响阳离子催化中心的空间排列和催化活性。 将补充的阴离子间隔物掺入多金属氰化物化合物中以建立通式M 1, (CN)其中C 1,C 2,C 3,..., M 1,M 2和M 3是各种金属离子,X是补充阴离子间隔物。 在改性的多金属氰化物化合物的存在下,使H官能引发剂,烯化氧和CO 2 2反应形成聚醚碳酸酯多元醇。
摘要:
A method of forming a polyethercarbonate polyol enhances incorporation of CO2 into the polyethercarbonate polyol. The method provides a catalyst including a multimetal cyanide compound. An H-functional initiator, an alkylene oxide, and CO2 are reacted in the presence of the multimetal cyanide compound in a reactor. The method further provides a CO2-philic compound or a CO2-philic substituent. The CO2-philic compound and substituent enhance incorporation of the CO2 into the polyethercarbonate polyol and reduce formation of cyclic alkylene carbonates, such as cyclic propylene carbonate, which are undesirable byproducts.
摘要翻译:形成聚醚碳酸酯多元醇的方法增强了CO 2 CO 2向聚醚碳酸酯多元醇中的引入。 该方法提供了包含多金属氰化合物的催化剂。 在多元氰化物化合物的存在下,在反应器中使H官能引发剂,烯化氧和CO 2 2反应。 该方法还提供了一种CO 2 - 2亲核化合物或一种CO 2 - 二取代基。 CO 2 - 2亲核化合物和取代基增强了CO 2 CO 2在聚醚碳酸酯多元醇中的引入,并且减少环状碳酸亚烷基酯的形成,例如环状碳酸亚丙酯,这是不期望的副产物 。
摘要:
An improved method for synthesizing a double metal cyanide (DMC) catalyst combines and sonicates aqueous and non-aqueous solutions of a first metal salt, such as Zn(OAc)2, of a second metal salt, such as CoCl2, and of an alkali metal cyanide, such as NaCN, to synthesize the DMC catalyst, Zn3[Co(CN)6]2. An improved method of producing a polyether polyol uses the DMC catalyst to produce the polyol.
摘要:
A method of forming a polyethercarbonate polyol enhances incorporation of CO2 into the polyethercarbonate polyol. The method provides a catalyst including a multimetal cyanide compound. An H-functional initiator, an alkylene oxide, and CO2 are reacted in the presence of the multimetal cyanide compound in a reactor. The method further provides a CO2-philic compound or a CO2-philic substituent. The CO2-philic compound and substituent enhance incorporation of the CO2 into the polyethercarbonate polyol and reduce formation of cyclic alkylene carbonates, such as cyclic propylene carbonate, which are undesirable byproducts.
摘要:
A method of forming a polyethercarbonate polyol enhances incorporation of CO2 into the polyethercarbonate polyol. The method provides a catalyst including a multimetal cyanide compound. The multimetal cyanide compound has an ordered structure defined by a cationic catalytic center and an anionic backbone with the anionic backbone spatially arranged about the cationic catalytic center. The anionic backbone is modified with a supplemental anionic spacer to affect the spatial arrangement and catalytic activity of the cationic catalytic center. The supplemental anionic spacer is incorporated into the multimetal cyanide compound to establish the general formula, M1a[M2b(CN)cMd3Xe]f, wherein M1, M2, and M3 are various metal ions and X is the supplemental anionic spacer. An H-functional initiator, an alkylene oxide, and CO2 are reacted in the presence of the modified multimetal cyanide compound to form the polyethercarbonate polyol.
摘要翻译:形成聚醚碳酸酯多元醇的方法增强了CO 2 CO 2向聚醚碳酸酯多元醇中的引入。 该方法提供了包含多金属氰化合物的催化剂。 多金属氰化合物具有由阳离子催化中心和阴离子主链定义的有序结构,阴离子主链在阳离子催化中心周围空间布置。 阴离子主链用补充阴离子间隔物修饰以影响阳离子催化中心的空间排列和催化活性。 将补充的阴离子间隔物掺入多金属氰化物化合物中以建立通式,其中M 1, (CN)其中C 1,C 2,C 3,..., M 1,M 2和M 3是各种金属离子,X是补充阴离子间隔物。 在改性的多金属氰化物化合物的存在下,使H官能引发剂,烯化氧和CO 2 2反应形成聚醚碳酸酯多元醇。
摘要:
An improved method for synthesizing a double metal cyanide (DMC) catalyst combines and sonicates aqueous and non-aqueous solutions of a first metal salt, such as Zn(OAc)2, of a second metal salt, such as CoCl2, and of an alkali metal cyanide, such as NaCN, to synthesize the DMC catalyst, Zn3[Co(CN)6]2. An improved method of producing a polyether polyol uses the DMC catalyst to produce the polyol.
摘要:
A method of forming a polyol includes the steps of reacting an initiator with an alkylene oxide, and optionally carbon dioxide, in the presence of a double metal cyanide catalyst and a sterically hindered chain transfer agent capable of protonating the growing polyol polymer. The presence of the chain transfer agent reduces the polydispersity of the resultant polyol.
摘要:
A method of removing and reclaiming a double metal cyanide (DMC) catalyst from a polyol is disclosed. A polymeric acid that is soluble in the polyol is introduced into the polyol during or after the polymerization reaction. The polymeric acid reacts with the double metal cyanide catalyst thereby causing the double metal cyanide catalyst and the polymeric acid to form an agglomeration in the polyol. The agglomeration is easily separated from the polyol via filtration, for example. The recovered agglomerated DMC catalyst can then be reconstituted using an acid solution.
摘要:
A polyethercarbonate polyol includes polyethercarbonate segments, polycarbonate segments, and polyether segments. A method of forming the polyethercarbonate polyol provides a catalyst, including a multimetal cyanide compound, and reacts an H-functional initiator, an alkylene oxide, and carbon dioxide in the presence of the multimetal cyanide compound to form the polyethercarbonate polyol. Amounts of each segment in the polyethercarbonate polyol are selectively controlled.
摘要:
The present invention relates to a process for the preparation of flexible, soft polyurethane foams having viscoelastic, structure-borne soundproofing properties in a temperature range of from -20.degree. C. to +80.degree. C. by reactinga) a polyoxyalkylene-polyol mixture containingai) block polyoxypropylene-polyoxyethylene-polyol mixture having a hydroxyl number of from 14 to 65 and containing from 2 to 9% by weight of terminal ethylene oxide units, based on the weight of the polyoxypropylene units, prepared by anionic polymerization, at elevated temperatures, of 1,2-propyleneoxide onto an initiator molecule mixture having a mean functionality of from 2.3 to 2.8, comprising water and glycerol and/or trimethylolpropane, and polymerization of acylene oxide onto the resultant polyoxypropylene adduct, andaii) one or more difunctional and/or trifunctional polyoxypropylene-polyoxyethylene-polyol containing from 60 to 85% by weight of oxyethylene units, based on the total weight of polymerized alkylene oxide units, and having a hydroxyl number of from 20 to 80, andb) if desired low-molecular-weight chain extenders withc) organic and/or modified organic polyisocyanates in the presence ofd) catalysts,e) blowing agents, preferably water, and, if desired,f) auxiliaries and/or additives,and to the polyoxyalkylene-polyol mixtures (a) which can be used for this purpose.