几种烷基铵盐用于研究α-磷酸钛(α-TiP)插层化学。表征结果表明,无需添加任何额外的胺类物质就可以成功实现通过直接离子交换实现的预期插入。我们的发现与当前的观点不同,即通过离子交换方法,在没有碱的辅助下,由于层间距离小,大阳离子难以直接交换到α-四价金属磷酸盐的狭窄层间空间中。研究发现,烷基铵阳离子,例如n仅通过选择与适当阴离子的盐,例如磷酸根,亚磷酸根,亚硫酸根,柠檬酸根和苹果酸根离子,就可以将丁基丁基铵阳离子直接交换到层间空间中。对于磷酸盐,除正丁基铵外,还研究并成功完成了正己基铵,环己基铵和吡啶鎓与层间质子的交换。这四种阳离子的吸收值分别为0.420、0.595、0.571和0.335 g / g。一项机理研究表明,尽管相关的交换反应似乎只涉及α-TiP的质子和盐的烷基铵阳离子,但事实证明,盐中阴离子(反离子)的共轭酸的强度是关键在这个过程中的因素。
Quaternaryammoniumsalts were synthesized from ammoniumsalts and dialkyl carbonates over imidazolium ionic liquid catalysts. The reaction gave almost stoichiometric amounts of the quaternaryammoniumsalts for halides and nitrates. It was found that the electron-donating property of the alkyl moieties of ammonium cations, the electrophilic nature of the alkyl group of the carbonate, the acidity of
Polyolefin base resin composition for metal product wrapping material
申请人:AICELLO CHEMICAL COMPANY LIMITED
公开号:EP0202771A2
公开(公告)日:1986-11-26
Disclosed herein is a resin composition obtained by mixing an olefin-base resin, which has in turn been obtained by partially neutralizing a free carboxyl group in a random copolymer of an a-olefin and an α,β-ethylenically-unsaturated monocarboxylic or dicarboxylic acid, with a volatile rust preventive in a specific amount or more. The resin composition has excellent rust preventive properties and can hence be used advantageously as a wrapping material for metal products.
申请人:BOARD OF SUPERVISORS OF LOUISIANA STATE UNIVERSITY AND AGRICULTURAL AND MECHANICAL COLLEGE
公开号:US10575520B2
公开(公告)日:2020-03-03
Compositions are described comprising an amount of a toxicant comprising a compound of the formula HNR1R2, or a salt thereof, wherein R1 and R2 are independently hydrogen, a substituted or unsubstituted C4-C6-cycloalkyl group or a substituted or unsubstituted C6-C12-aryl group; wherein the amount of the toxicant is sufficient to control termites. Methods for controlling termites using such compositions are also described.
SLURRY COMPOSITIONS FOR MAKING ENVIRONMENTAL BARRIER COATINGS AND ENVIRONMENTAL BARRIER COATINGS COMPRISING THE SAME
申请人:KIRBY GLEN HAROLD
公开号:US20110027556A1
公开(公告)日:2011-02-03
Slurry compositions for making an environmental barrier coating including from about 9 wt % to about 81 wt % water; from about 3 wt % to about 72 wt % primary material; and from about 0.1 wt % to about 18 wt % slurry sintering aid, and environmental barrier coatings including such compositions.
Auto-emulsifying cleaning systems and methods for use
申请人:Sehgal Amit
公开号:US20110088728A1
公开(公告)日:2011-04-21
An auto-emulsifying cleaning composition capable of emulsifying upon contact with water, the composition in one typical embodiment comprising, based on the total weight of the composition, (a) from about 1% to about 99% by weight a blend of dibasic esters; (b) from about 1% to about 40% by weight of a blend of surfactants consisting of an organic anion neutralized with an organic cation, where either or both of the anion and the cation have surfactant properties, and the complex of which is soluble in the dibasic ester solvent blend. The blend of surfactants is typically a cationic surfactant and an anionic surfactant, which may or may not be used in conjunction with non-ionic surfactants. The dibasic esters are be derived from a blend of adipic, glutaric, and succinic diacids, and, in one particular embodiment, the blend comprises dialkyl adipate, dialkyl methylglutarate and dialkyl ethylsuccinate, wherein the alkyl groups individually comprise a C
1
-C
12
hydrocarbon group.