摘要:
An aqueous coating composition for blocking stains and a method of using the coating composition is described. The coating composition includes an aqueous dispersion of a copolymer that is derived from a single stage emulsion polymerization of an ethylenically unsaturated nonionic monomer, greater than 0 and less than 1.5% by weight of an ethylenically unsaturated strong acid monomer or salt thereof, and greater than 1.5% and less than 3% by weight of methacrylic acid.
摘要:
An aqueous coating composition for blocking stains and a method of using the coating composition is described. The coating composition includes an aqueous dispersion of a copolymer that is derived from a single stage emulsion polymerization of an ethylenically unsaturated nonionic monomer, greater than 0 and less than 1.5% by weight of an ethylenically unsaturated strong acid monomer or salt thereof, and greater than 1.5% and less than 3% by weight of methacrylic acid.
摘要:
An aqueous coating composition for blocking stains and a method of using the coating composition are described. The coating composition includes an aqueous dispersion of a co-polymer that is derived from an emulsion polymerization of an ethylenically unsaturated non-ionic monomer, an ethylenically unsaturated monomer with a functional acid group having a pKa of 2 or greater or salt thereof, and an alkyl amide.
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. 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:
Process for the emulsion polymerization of one or more olefins by reacting a quinoid compound with a metal compound and a phosphine compound which is substituted by at least one polar radical and subsequently using the reaction product for the polymerization or copolymerization of olefins in water or in a solvent mixture which contains at least 50% by weight of water and at least one emulsifier.
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:
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 composition comprising a carbodiimide and a polymer, wherein the carbodiimide comprises a reaction product of a) at least one of an aliphatic C4 to C20 polyisocyanate and an araliphatic C4 to C20 polyisocyanate, b) at least one of a hydroxy carboxylic acid and a hydroxy carboxylic salt, c) optionally, a further compound carrying groups able to react with isocyanate groups in an addition reaction, d) optionally, at least one other isocyanate, and the carbodiimide units being derived essentially exclusively from the isocyanate groups of component a), and the polymer comprises a reaction product of an ethylenically unsaturated carboxylic acid and at least one of a (meth)acrylate, a vinyl ester of a carboxylic acid, a vinyl aromatic compound, an ethylenically unsaturated nitrile, a vinyl halide, an aliphatic hydrocarbon, and a free-radically polymerizable monomer. Also, a method of applying the composition on and/or in a substrate.