The invention pertains to the field of nanotechnology. The disclosure provides nanostructure compositions comprising (a) at least one organic solvent; (b) at least one population of nanostructures comprising a core and at least one shell, wherein the nanostructures comprise inorganic ligands bound to the surface of the nanostructures; and (c) at least one poly(alkylene oxide) additive. The nanostructure compositions comprising at least one poly(alkylene oxide) additive show improved solubility in organic solvents. And, the nanostructure compositions show increased suitability for use in inkjet printing. The disclosure also provides methods of producing emissive layers using the nanostructure compositions.

A process for producing a polyoxymethylene-polyoxyalkylene copolymer is provided. The process comprises reacting a polymer formaldehyde compound of an alkylene oxide and a specific component (X) in the presence of a double metal cyanide (DMC) catalyst. A polyoxymethylene-polyoxyalkylene copolymer can be obtained by means of such a process and to the use of same for producing a polyurethane polymer.

A fermentation method includes steps of forming a broth having yeast, water and sugar; and contacting a foam control agent with the broth, a foam formed on the broth or both, wherein the foam control agent has structure (I) wherein R is a linear or branched alkyl group containing from 4 to 18 carbon atoms, m is from 1 to 10, n is from 9 to 15, o is from 15 to 25, and o/n is from 1.00 to 2.00.

In accordance with one or more embodiments of the present disclosure, a process includes introducing a mixture comprising polypropylene carbonate (PPC) polyol, carbon dioxide, propylene oxide, and at least one dibasic ester to a quenching vessel to separate the PPC polyol from the carbon dioxide and the propylene oxide; introducing additional dibasic ester to the separation vessel, thereby separating the carbon dioxide from the propylene oxide and the dibasic ester such that a mixture of propylene oxide and the dibasic ester is formed; and introducing the mixture of propylene oxide and the dibasic ester to a recovery vessel, wherein the propylene oxide is separated from the dibasic ester in the recovery vessel.

Provided is a surface protectant that suppresses corrosion of a semiconductor wafer surface by a basic compound, and reduces defects in the semiconductor wafer. The semiconductor wafer surface protectant of the present invention includes a compound represented by Formula (1) below;
R.sup.1O—(C.sub.3H.sub.6O.sub.2).sub.n—H  (1) where R.sup.1 denotes a hydrogen atom, a hydrocarbon group that has from 1 to 24 carbon atoms and may have a hydroxyl group, or a group represented by R.sup.2CO, where the R.sup.2 denotes a hydrocarbon group having from 1 to 24 carbon atoms; and n indicates an average degree of polymerization of a glycerin unit shown in the parentheses, and is from 2 to 60.

A process for continuous production of polyether carbonate polyols by the addition of alkylene oxide and carbon dioxide in the presence of a DMC catalyst or a metal complex catalyst based on the metals cobalt and/or zinc, onto an H-functional starter substance is provided. Wherein (γ) the H-functional starter substance, alkylene oxide and catalyst are continuously metered into the reaction during the addition and the resulting reaction mixture is continuously discharged from the reactor, wherein (i) before step (γ), a suspension of catalyst in suspension medium and/or H-functional starter substance in the reactor is adjusted to a temperature T.sub.1 ranging from 100° C. to 150° C., wherein T.sub.1 is at least 10% above a temperature T.sub.2 and T.sub.2 is a temperature ranging from 50° C. to 135° C., and (ii) from commencement of the addition of alkylene oxide in step (γ) the temperature is continuously reduced to the temperature T.sub.2.

A method for preparing a polyol comprises the following steps of: (1) dissolving 2,3 -epoxybutane and an acid catalyst in an inert solvent to obtain a solution A; dissolving triethylene glycol in an inert solvent to obtain a solution B; and dissolving epoxy vegetable oil in an inert solvent to obtain a solution C; (2) respectively and simultaneously pumping the solutions A and B into a first micromixer for mixing; (3) pumping the solution C and an effluent of the first microreactor into a second micromixer for mixing while carrying out step (2); and (4) dissolving the vegetable oil polyol in an inert solvent to obtain a solution D; dissolving epoxypropane and an alkaline catalyst in an inert solvent to obtain a solution E; and pumping the solution D and the solution E into a tank reactor for reaction, thereby obtaining the polyol.

Compounds are based on polyether-modified polybutadiene, where the polyether-modified polybutadiene contains repeat units selected from the divalent radicals:

##STR00001##

The radical B has at least one ester group.

A soil treatment formulation having an ethoxylated/propoxylated fatty acid mono-esters of sorbitan, ethylene oxide-propylene oxide copolymer, and compatibilising surfactant selected from an alkoxylated fatty alcohol, alkoxylated fatty alcohol phosphate ester, and/or alkoxylated glycerides. The formulation optionally comprises an agrochemical active and/or nutrient. The soil treatment composition is suitable for use in improving the water retention and/or conditioning of soil. There is also provided a method of making the formulation, and for treating soil with the formulations.

Disclosed herein are emulsifiers for epoxy resins obtained by reacting an epoxy resin with a mixture of a polyethylene glycol having an average molecular weight of greater than 4000 g/mol and less than 10,000 g/mol and a block copolymer of polyethylene glycol and polypropylene glycol, aqueous epoxy resin dispersions including the same, and methods for preparation thereof.