CAS: 117-82-8; Bis(2-Methoxyethyl) Phthalate

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CAS号109-86-4 乙二醇甲醚 | CAS号88-95-9 邻苯二甲酰氯 | CAS号85-44-9 苯酐

苯酐,乙二醇甲醚置于nanosilica-Supported Hydroxyl-Functionalized Diacidic Ionic Liquid体系中,用 Neat (No Solvent) 用作溶剂,化学反应 6.0H,以68%的收率获得邻苯二甲酸二甲氧乙酯
参考文献:新型氢键合二氧化硅负载的酸性离子液体:一种高效,可回收和选择性的非均相催化剂,用于合成二酯
标题:新型氢键合二氧化硅负载的酸性离子液体:一种高效,可回收和选择性的非均相催化剂,用于合成二酯
摘要:摘要在这项研究中,制备了两种新型的酸性离子液体,包括羟基官能化的二酸性离子液体[hfdail]和磺化的二酸性离子液体[sfdail],并通过以下方法固定在二氧化硅纳米粒子(snps)的表面上氢键.通过ft-Ir,NMR,Sem,氮物理吸附测量,Tga和酸碱滴定法对材料进行了表征.在无溶剂条件下,在邻苯二甲酸酯,马来酸酯和琥珀酸酯二酯的合成中研究了制备的催化剂的催化活性.已经发现,与纳米二氧化硅@ [sfdail]相比,具有较高酸性位点和较高亲水性的纳米二氧化硅@ [hfdail]更有效.值得注意的是,即使在延长的反应时间或更高的催化剂载量下,纳米二氧化硅@ [hfdail]催化剂对二酯产品也表现出优异的选择性,而在纳米二氧化硅@ [sfdail]的情况下,单酯产品占主导.此外,图形概要 概要两种新型酸性离子液体,包括羟基官能化的二酸离子液体[hfdail]和磺化二酸离子液体[sfdai
Doi:10.1007/s12039-018-1454-Z

专利信息

专利号:US-5194469-A
优先权日:1991-02-28
标题:Latex for coatings having improved flexibility
发明人：SRAIL RICHARD E; BURROWAY GARY L
权利人:GOODYEAR TIRE & RUBBER
摘要:This invention relates to the synthesis of a latex which can be formulated into coatings having improved flexibility and good water resistance. Coatings of this type are particularly useful in roof coating applications because they offer excellent flexibility, excellent ultra-violet light resistance, and good water resistance. The subject invention more specifically discloses a process for producing a neutralized latex that is useful in the manufacture of water reducible coatings which comprises: n (1) free radical aqueous emulsion polymerizing, at a pH of less than about 3.5, a monomer mixture which comprises, based on 100 weight percent monomers: (a) from about 30 to about 70 weight percent vinyl aromatic monomers, (b) from about 25 to about 65 weight percent of at least one alkyl acrylate monomer, (c) from about 1 to about 5 weight percent of acrylic acid, and (d) about 0.4 to about 3 weight percent methacrylic acid, in the presence of about 0.2 to 0.4 phm at least one sulfonate surfactant and in the presence of about 4 to 8 phm of at least one nonionic surface active agent having a hydrophile-lipophile balance number which is within the range of about 12 to about 20 to produce a latex; and n (2) neutralizing the latex with ammonia to a pH which is within the range of about 7 to about 10.5 to produce the neutralized latex.

专利号:US-5122566-A
优先权日:1989-10-06
标 题 :Latex for coatings having reduced blushing characteristics
发明人：BURROWAY GARY L; GESENHUES ALBERT M; BRADEN JENNIFER T
权利人:GOODYEAR TIRE & RUBBER
摘要:This invention relates to the synthesis of a latex which can be formulated into coatings having improved water resistance for both moisture vapor transmission and water spotting. Coatings which are formulated with the latex of this invention are particularly useful for coating metal substrates because they provide excellent rust and corrosion resistance. The subject invention more specifically discloses a process for producing a neutralized latex that is useful in the manufacture of water reducible coatings which comprises: (1) free radical aqueous emulsion polymerizing at a pH of less than about 3.5 a monomer mixture which comprises, based on 100 weight percent monomers: (a) from about 45 to about 85 weight percent vinyl aromatic monomers, (b) from about 15 to about 50 weight percent of at least one alkyl acrylate monomer, and (c) from about 1 to about 6 weight percent of at least one unsaturated carbonyl compound; in the presence of about 0.5 to 4.0 phm at least one phosphate ester surfactant and in the presence of about 0.5 to 4.0 phm of at least one water insoluble nonionic surface active agent to produce a latex; and (2) neutralizing the latex with ammonia to a pH which is within the range of about 7 to a bout 10.5 to produce the neutralized latex.

专利号:US-4968741-A
优先权日:1989-10-06
标题:Latex for coatings having reduced blushing characteristics
发明人：BURROWAY GARY L; GESENHUES ALBERT M; BRADEN JENNIFER T
权利人:GOODYEAR TIRE & RUBBER
摘要:This invention relates to the synthesis of a latex which can be formulated into coatings having improved water resistance for both moisture vapor transmission and water spotting. Coatings which are formulated with the latex of this invention are particularly useful for coating metal substrates because they provide excellent rust and corrosion resistance. The subject invention more specifically discloses a process for producing a neutralized latex that is useful in the manufacture of water reducible coatings which comprises: n (1) free radical aqueous emulsion polymerizing at a pH of less than about 3.5 a monomer mixture which comprises, based on 100 weight percent monomers: (a) from about 45 to about 85 weight percent vinyl aromatic monomers, (b) from about 15 to about 50 weight percent of at least one alkyl acrylate monomer, and (c) from about 1 to about 6 weight percent of at least one unsaturated carbonyl compound; in the presence of about 0.5 to 4.0 phm at least one phosphate ester surfactant and in the presence of about 0.5 to 4.0 phm of at least one water insoluble nonionic surface active agent to produce a latex; and n (2) neutralizing the latex with ammonia to a pH which is within the range of about 7 to about 10.5 to produce the neutralized latex.

专利号:WO-2024121360-A1
优先权日:2022-12-09
标 题 :In vitro enzymatical rna synthesis
发明人：HEINISCH TILLMANN; VILLAIN GUILLAUME; DERRIEN BENOIT; LOURENCO NELLY
权利人:DNA SCRIPT
摘要:The present invention relates to nucleic acid constructs capable of generating an RNA product, methods and kits for generating RNA products using said nucleic acid constructs.

专利号:US-2014315720-A1
优先权日:2012-10-24
标 题 :Polysaccharide ester microspheres and methods and articles relating thereto
发明人：FALLON DENIS G; GARRETT THOMAS S; KIZER LAWTON E; ZAZZARA KAREN L; COMBS MICHAEL T; JOHNSON RICHARD K; DEHART GARY
权利人:CELANESE ACETATE LLC
摘要:A method for producing a polysaccharide ester microsphere may include forming a polysaccharide ester product from a polysaccharide synthesis, wherein the polysaccharide ester product comprises a polysaccharide ester and a solvent; diluting the polysaccharide ester product, thereby yielding a polysaccharide ester dope; and forming a plurality of polysaccharide ester microspheres from the polysaccharide ester dope. Suitable polysaccharides may include, but are not limited to, starch, cellulose, hemicellulose, algenates, chitosan, and any combination thereof. Esters thereof may be organic esters (e.g., acetate and the like), inorganic esters (e.g., sulfonates and the like), or combinations thereof. Further, the solids conent of the polysaccharide ester dope, in some instances, may be greater than about 16 wt %.

专利号:CN-101130597-A
优先权日:2007-09-29
标题 :Synthesis method of solvent resistant solvent type urethane elastomer