A method of producing a polyether polyol that includes reacting a low molecular weight initiator with one or more monomers in the presence of a polymerization catalyst, the low molecular weight initiator having a number average molecular weight of less than 1,000 g/mol and a nominal hydroxyl functionality at least 2, the one or more monomers including at least one selected from propylene oxide and butylene oxide, and the polymerization catalyst being a Lewis acid catalyst having the general formula M(R.sup.1).sub.1(R.sup.2).sub.1(R.sup.3).sub.1(R.sup.4).sub.0 or 1. Whereas, M is boron, aluminum, indium, bismuth or erbium, R.sup.1, R.sup.2, and R.sup.3 each includes a same fluoroalkyl-substituted phenyl group, and optional R.sup.4 includes a functional group or functional polymer group. The method further includes forming a polyether polyol having a number average molecular weight of greater than the number average molecular weight of the low molecular weight initiator in the presence of the Lewis acid catalyst.

The present invention relates to compounds according to formula (Ia) or formula (Ib); ##STR00001##
wherein each W is independently selected from the group consisting of H, F, Cl, Br, I and (CY.sub.2).sub.mCY.sub.3; each Y is independently selected from the group consisting of F, Cl, Br and I; each Z is independently selected from the group consisting of H, OH, (CW.sub.2).sub.pCW.sub.3, CY.sub.3, OCW.sub.3, O(CW.sub.2).sub.pCW.sub.3, OCW((CY.sub.2).sub.mCY.sub.3)CWCW.sub.2, (CW.sub.2).sub.pOH, polyalkylene glycol and polyolester; n is an integer from 2 to 49; m is an integer from 0 to 3; p is an integer from 0 to 9; the molecular weight average (M.sub.W) is ≤5500; and the polydispersity index is ≤1.45; compositions comprising these compounds and methods for their production.

The present disclosure discloses a synthesis method of polyether for a low-modulus sealant, belonging to the technical field of organic compound synthesis. In the synthesis method of the present disclosure, a reaction is performed by using a mixture of monohydric alcohol polyoxypropylene ether and polyhydric alcohol polyoxypropylene ether as a starter, using epoxypropane as a chain extender and adding a metal complex catalyst, so as to obtain the polyether for the low-modulus sealant after the reaction is ended. The polyether prepared in the present disclosure can not only well enhance the rigid strength of the sealant but also reduce the elasticity modulus of the sealant, overcoming the problem that the existing polyether silane modified sealant is high in modulus. The synthesis method of the present disclosure is simple in synthesis process, easy to produce and control, short in production period and low in energy consumption.

The present invention provides a photosensitive composition which can suppress the generation of a development residue on the surface of an electrode and the corrosion of the electrode to form a black pixel division layer, and also can suppress the generation of off-pixel in an organic EL display device comprising the pixel division layer. Disclosed is a photosensitive composition comprising (a) a pigment, (b) a resin having two or more tertiary amino groups in the molecule, and (c) a photosensitive agent, wherein the component (b) contains a resin having a structure represented by the general formula (1).

Provided herein are polymeric α-hydroxy aldehyde or α-hydroxy ketone reagents which can be conjugated to amine-containing compounds to form stable conjugates in a single-step reaction. In selected embodiments, the polymeric reagent itself incorporates an internal proton-abstracting (basic) functional group, to promote more efficient reaction. The substituent is appropriately situated, via a linker if necessary, to position the group for proton abstraction, preferably providing a 4- or 5-bond spacing between the abstracting atom and the hydrogen atom on the α-carbon. Also provided are methods of using the reagents and stable, solubilized conjugates of the reagents with biologically active compounds. In preferred embodiments, the polymeric component of the reagent or conjugate is a polyethylene glycol.

Provided herein are polymeric α-hydroxy aldehyde or α-hydroxy ketone reagents which can be conjugated to amine-containing compounds to form stable conjugates in a single-step reaction. In selected embodiments, the polymeric reagent itself incorporates an internal proton-abstracting (basic) functional group, to promote more efficient reaction. The substituent is appropriately situated, via a linker if necessary, to position the group for proton abstraction, preferably providing a 4- or 5-bond spacing between the abstracting atom and the hydrogen atom on the α-carbon. Also provided are methods of using the reagents and stable, solubilized conjugates of the reagents with biologically active compounds. In preferred embodiments, the polymeric component of the reagent or conjugate is a polyethylene glycol.

A wetting agent according to Formula (I): ##STR00001## wherein R.sup.1 is selected from a branched alkyl group or linear alkyl group or a cycloaliphatic group or an aromatic group, each having 6 to 15 carbon atoms; R.sup.2 is selected from hydrogen, methyl, or ethyl; R.sup.3 is selected from hydrogen, methyl, or ethyl; R.sup.4 is selected from hydrogen, methyl, or ethyl; R.sup.5 is selected from methyl or ethyl; x ranges from 0 to 5; y ranges from 0 to 10; z ranges from 1 to 10; with the proviso that when x ranges from 1 to 5, R.sup.2 is different from R.sup.3; and with the proviso that when x=0, R.sup.3 is different from R.sup.4. The wetting agent also imparts anti-foam properties to aqueous solutions while reducing surface tension.

The present disclosure is related to a surfactant comprising at least one C8 to C30 branched alkanol alkoxylate, a process for the preparation of the surfactant, an article comprising the surfactant, and a use of the surfactant. Also disclosed are readily biodegradable surfactants obtained from branched aliphatic alcohols and including a polyethylene oxide block.

Provided is a catalyst for synthesizing a polyethylene oxide polymer, comprising a crown ether as a first component, a quaternary phosphonium salt as a second component, and an alkali metal and/or an alkali metal compound as a third component. The catalyst can reduce the concentration of alkali metal ions in the product and is suitable for high-standard industrial fields. Also provided is a method for synthesizing a polyethylene oxide polymer, comprising carrying out a reaction of a compound containing active hydrogen and ethylene oxide in the presence of the catalyst. The method is simple to operate and environmentally friendly, improves the quality of the synthesized product, and is suitable for high-standard industrial production.

The present invention relates to a compound comprising a hydrophobically modified poly(oxyalkylene-urethane) having a hydrophobic fragment represented by Structure I: ##STR00001## where Ar.sup.1, Ar.sup.2; R.sup.1, m, and n are defined herein. The compound of the present invention provides viscosity stability upon tinting for paints containing a hydrophobically modified poly(oxyalkylene-urethane) rheology modifier, more particularly a HEUR rheology modifier.