The use of an alcohol alkoxylate or an alcohol alkoxylate mixture as a concentrated defoamer, antifoamer and/or deaerator wherein the alcohol alkoxylate or alcohol alkoxylate mixture comprises at least an alcohol alkoxylate, wherein the alcohol alkoxylate has a molecular structure as shown in [I]: R—O—(CH.sub.2(CH.sub.3)CHO).sub.m—(CH.sub.2CH.sub.2O).sub.n—H wherein R is a branched and/or linear alkyl group having from 20 to 50 carbon atoms, m=10-40, and n=0-5.

Disclosed are methods for purifying polyols containing oxyalkylene units that is an alkali metal catalyzed alkoxylation reaction product of an alkylene oxide and an H-functional starter. The methods include neutralizing the alkali metal ions with an aqueous solution comprising water and sulfuric acid, in which: (i) the sulfuric acid is present in an amount of no more than 5% by weight, based on the total weight of the aqueous solution, and (ii) the sulfuric acid is used in an amount of 2% to 10% more than the theoretical amount necessary to neutralize all of the alkali metal ions present. The methods can produce polyols having a low content of 2-methyl-2-pentenal.

A winterized paraffin inhibitor, which is capable of being used for preventing the deposition of paraffins in hydrocarbon streams and capable of withstanding freezing or crystallization at freezing or sub-freezing temperatures, may be formed by adding an oxyalkylated branched aliphatic compound having 12 or more carbons to a high molecular weight aliphatic polymer paraffin inhibitor, the oxyalkylated branched aliphatic compound having 12 or more carbons being produced by the oxyalkylation of the branched aliphatic compound having 12 or more carbon atoms in which the branched aliphatic compound having 12 or more carbon atoms is grafted with a polyether via a ring-opening reaction, wherein the polyether is a polymer of ethylene oxide, propylene oxide, butylene oxide, and combinations thereof.

The present disclosure discloses a fluoroalkyl glycerin derivative usable as an excellent surfactant by having functional groups and the number of carbon atoms controlled in the molecular structure, and its use as a surfactant. A fluoroalkyl glycerin derivative according to the present disclosure is used as a fluorine-based nonionic surfactant, and replaces existing fluoro compounds as well as having excellent surfactant properties compared to existing surfactants having a linear alkyl group.

The present disclosure discloses a method for preparing a hybrid-type fluorine-based nonionic surfactant capable of producing a high purity material in a high yield. By preparing a hybrid-type fluorine-based nonionic surfactant according to the present disclosure, the surfactant is mass-produced in a high yield through controlling reaction conditions including a solvent.

Provided herein is a polymer composition comprising a polyhydroxyamino ether (e.g., a crosslinked polyhydroxyamino ether) and printed circuit boards comprising the same.

This invention relates to an in-situ formed polyol blend having an overall functionality of 2 to 3 and an overall hydroxyl number of 50 to 150. A process for preparing these polyol blends is also disclosed. These in-situ formed polyol blends are suitable for preparing viscoelastic flexible polyurethane foams. A process for preparing these foams is also disclosed.

Low-profile thermally stable lubricants for data storage devices are provided based on multi-dentate molecular designs. One such lubricant comprises perfluoroalkyl ether segments, a divalent linking segment, and anchoring functional groups attachable to, or engageable with, a protective overcoat of a magnetic recording medium. The lubricants can be used in conjunction with a magnetic recording medium and/or a magnetic data storage system.

A (poly)ol block copolymer of general structure B-A-(B)n, wherein block A is a polycarbonate block or polyester block, n=t−1 and t=the number of reactive end residues on block A, wherein block B is a polyethercarbonate block and wherein >70% of the copolymer chain ends are terminated by primary hydroxyl groups, and a process of producing such copolymers and products incorporating such copolymers.

Draw compounds and draw solutions comprising said draw compounds for use in forward osmosis solvent purification systems. The draw compound may be a linear random, sequential, or block molecular chain consisting of at least one oxide monomer or diol monomer and have a temperature-dependent affinity with a feed solvent. The draw compound may further include a first terminal group and a second terminal group, at least one of the first terminal group and the second terminal group selected from the group consisting of a hydroxyl group, an amine group, a carboxylic group, an allyl group, and a C1 to C14 substituted and unsubstituted alky group. The draw compound may also be a branched random, sequential, or block molecular chain consisting of at least one oxide monomer or diol monomer.