New polyol ether compounds and a process for their preparation. The process comprises reacting a polyol, a carbonyl compound, and hydrogen in the presence of hydrogenation catalyst, to provide the polyol ether. The molar ratio of polyol to carbonyl compound in the process is greater than 5:1.
Photoinitiator compounds comprising both a photoactive moiety and an amine functionality, bonded to a polyhedral oligomeric silsesquioxane, which photoinitiator is represented by formula (1) or (1') wherein n is 2m; m is an integer of 2 to 30; the sum of n' + a is an integer 4-60; n' is an even-numbered integer; a is an even-or uneven-numbered integer; and for example different A C1-C12alkyl, or a photoactive moiety Q1, or a group of formula (2); E for example is a direct bond, L is linear or branched C1-C3alkylene, preferably propylene; R1 and R2 for example are a photoactive moiety Q, or C2-20alkyl; Q is for example a group of formula (4); Z2 is for example C1-C6alkylene which is unsubstituted or substituted by one or more OR6; and R6, R12, R13 and R14 for example are hydrogen; are especially suitable as low-migrating photoinitiators.
METHODS FOR PRODUCING FUELS, GASOLINE ADDITIVES, AND LUBRICANTS USING AMINE CATALYSTS
申请人:The Regents of the University of California
公开号:US20170327448A1
公开(公告)日:2017-11-16
Provided herein are methods for producing α,β-unsaturated ketones from the condensation of methyl ketones in the presence of an amine catalyst. Such amine catalysts may be supported, for example, on a silica-alumina support. Such amine catalysts may be used in the presence of an additional acid. The α,β-unsaturated ketones may be produced by dimerization and/or timerization of the methyl ketones. Such α,β-unsaturated ketones may be suitable for use in producing fuels, gasoline additives, and/or lubricants, or precursors thereof. The methyl ketones may be obtained from renewable sources, such as by the fermentation of biomass.
SOLID SUPPORTED TRITHIOL COMPOUNDS FOR REMOVING HEAVY METALS FROM SOLUTION, AND FILTRATION SYSTEMS UTILIZING THE COMPOUNDS
申请人:Covalent Research Technologies, LLC
公开号:US20160152563A1
公开(公告)日:2016-06-02
Solid-supported trithiol compounds are prepared. The solid-supported trithiol compounds have formula (I):
in which R is a linker moiety, X is a solid support, and n≧1. The compounds of formula (I) may be incorporated into methods for removing heavy metals from solutions and into batch systems or filtration apparatus that remove heavy metals from solutions.
Bloom-resistant benzotriazole UV absorbers and compositions stabilized therewith
申请人:——
公开号:US20010023268A1
公开(公告)日:2001-09-20
Benzotriazole UV absorbers substituted with an ultra long ester or amide moiety wherein the ester or amide group is a hydrocarbyl group of 25 to 100 carbon atoms or is a group of alkyl of 25 to 100 carbon atoms interrupted by 5 to 39 oxygen atoms and terminated with an omega—OH or an omega—OR group exhibit excellent stabilization efficacy while they concomitantly do not bloom when incorporated into polyolefin films. These benzotriazole UV absorbers also provide excellent protection to white, dyed, dipped, unscented and/or scented candle wax from discoloration and degradation.