摘要:
Catalyst suspensions for the ring-opening polymerization of alkylene oxides comprise a) at least one multimetal cyanide compound having a crystalline structure and a content of platelet-shaped particles of at least 30% by weight, based on the multimetal cyanide compound, and b) at least one organic complexing agent c) water and/or d) at least one polyether and/or e) at least one surface-active substance, with the proviso that at least component a) and at least two of the components b) to e) have to be present.
摘要:
The invention relates to starting compounds which can be used for the preparation of polyurethanes and can be prepared by reaction of hydroxyl-containing oligomers of formaldehyde.
摘要:
A polyether polyol is formed by a method utilizing an aluminum phosphate catalyst. The method includes providing an alkylene oxide, providing an initiator molecule having at least one alkylene oxide reactive hydrogen, and reacting the alkylene oxide with the initiator molecule in the presence of the aluminum phosphate catalyst or a residue of the aluminum phosphate catalyst. The aluminum phosphate catalyst may have the general structure of P(O)(OAlR′R″)3 wherein: O represents oxygen; P represents pentavalent phosphorous; Al represents aluminum; and R′ and R″ independently comprise a halide, an alkyl group, a haloalkyl group, an alkoxy group, an aryl group, an aryloxy group, or a carboxy group.
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:
A polyurethane product includes an aluminum phosphate catalyst and/or a residue of the aluminum phosphate catalyst. The aluminum phosphate catalyst is originally present from a polyether polyol which is used in conjunction with an organic isocyanate to produce the polyurethane product. The aluminum phosphate catalyst may have the general structure of P(O)(OAlR′R″)3 wherein: O represents oxygen, P represents pentavalent phosphorous, Al represents aluminum, and R′ and R″ independently include a halide, an alkyl group, a haloalkyl group, an alkoxy group, an aryl group, an aryloxy group, or a carboxy group.
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 continuous process for preparation of a polyether polyol in a reactor includes introducing an initial starter/catalyst mixture into the reactor. The initial starter/catalyst mixture comprises an initial starter and a catalyst with the catalyst selected from aluminum phosphate catalysts and/or aluminum phosphonate catalysts and/or residues of these catalysts. In this continuous process, one or more alkylene oxide is continuously introduced into the reactor. Additional amounts of the catalyst and a continuous starter are also continuously introduced into the reactor. The polyether polyol prepared herein is continuously withdrawn from the reactor.
摘要:
A polyurethane product includes a carboxy-modified aluminum-based catalyst and/or residue of the catalyst. The catalyst is originally present from a polyether polyol which is used in conjunction with an organic isocyanate to produce the polyurethane product. The ideal carboxy-modified aluminum based catalysts used herein are selected from the group of carboxy-modified aluminum phosphate catalysts, carboxy-modified aluminum phosphonate catalysts, and residues or mixtures thereof.
摘要:
A process of forming a polyol includes the step of providing an initiator composition. The initiator composition includes sucrose as a first initiator and glycerin as a second initiator. The process also includes the steps of providing a dimethylalkanolamine and providing an alkylene oxide. The process further includes the step of reacting the initiator composition, the dimethylalkanolamine, and the alkylene oxide at a pressure of at least 60 psig to form the polyol. After formation, the polyol is utilized in a process of forming a polyurethane article. The process of forming the polyurethane article includes the steps of providing an isocyanate component and providing the polyol. The process of forming the polyurethane articles also includes the step of reacting the isocyanate component and the polyol to form the polyurethane article. The polyurethane article includes the reaction product of the isocyanate component and the polyol.
摘要:
A carboxy-modified aluminum-based catalyst composition is of the general formula P(O)(OAlR′R″)3 or RP(O)(OAlR′R″)2 wherein O represents oxygen, P represents pentavalent phosphorous, Al represents aluminum, R comprises hydrogen, an alkyl group, or an aryl group, and R′ and R″ independently comprise a halide, an alkyl group, a haloalkyl group, an alkoxy group, an aryl group, an aryloxy group, or a carboxy group, so long as at least one of R′ and R″ is a carboxy group. The carboxy-modified aluminum-based catalyst composition is, generally, the reaction product of phosphoric acid or a pentavalent phosphonic acid, a tri-substituted aluminum compound, and a carboxylic acid.