A method of producing one or more glycerol ethers, the method comprising contacting glycerol and tertiary butanol (TBA) in the presence of an acidic catalyst to produce one or more glycerol ethers selected from mono-tert butyl glycerol ethers, di-tert butyl glycerol ethers, tri-tert butyl glycerol ethers, or a combination thereof; separating water and a stream comprising isobutylene, unreacted TBA, or a combination thereof from the one or more glycerol ethers; and recycling at least a portion of the stream comprising isobutylene, unreacted TBA, or a combination thereof to the contacting. Also disclosed is a process of co-producing isooctene, wherein the process involves contacting glycerol and tertiary butanol in the presence of a dehydrating catalyst and dimerizing/oligomerizing the dehydrated products in the presence of an oligomerizing catalyst to form isooctene, a precursor of isooctane and isomers thereof.

A method of producing one or more glycerol ethers, the method comprising contacting glycerol and tertiary butanol (TBA) in the presence of an acidic catalyst to produce one or more glycerol ethers selected from mono-tert butyl glycerol ethers, di-tert butyl glycerol ethers, tri-tert butyl glycerol ethers, or a combination thereof; separating water and a stream comprising isobutylene, unreacted TBA, or a combination thereof from the one or more glycerol ethers; and recycling at least a portion of the stream comprising isobutylene, unreacted TBA, or a combination thereof to the contacting. Also disclosed is a process of co-producing isooctene, wherein the process involves contacting glycerol and tertiary butanol in the presence of a dehydrating catalyst and dimerizing/oligomerizing the dehydrated products in the presence of an oligomerizing catalyst to form isooctene, a precursor of isooctane and isomers thereof.

A fluorine-containing ether compound according to the present invention is a fluorine-containing ether compound represented by the following General Formula (1).

[Chem. 1]

(F.sub.2C.sub.IA-B-D).sub.2(1)

A fluorine-containing ether compound represented by the following formula (1) is provided.

R.sup.2CH.sub.2R.sup.1CH.sub.2OCH.sub.2CH(OH)(CH.sub.2).sub.nCH(OH)CH.sub.2OCH.sub.2R.sup.1CH.sub.2R.sup.2(1)

(in the formula (1), n is an integer of 2 to 6, R.sup.1 is a perfluoropolyether chain, R.sup.2 is OCH.sub.2CH(OH)CH.sub.2O(CH.sub.2).sub.mOH (m in the formula is an integer of 2 to 4)).

A fluorine-containing ether compound represented by the following formula (1) is provided. R.sup.1CH.sub.2R.sup.2CH.sub.2R.sup.3 (1) (In the formula (1), R.sup.1 is an alkoxy group having 1 to 10 carbon atoms, R.sup.2 is a perfluoropolyether chain, R.sup.3 is OCH.sub.2CH(OH)CH.sub.2O(CH.sub.2).sub.mOH (in in the formula is an integer of 2 to 4).)

A method including the step contacting an olefin, an alcohol, a metallosilicate catalyst and a solvent, wherein the solvent comprises structure (I): wherein R.sub.1 and R.sub.2 are each selected from the group consisting of an aryl group and an alkyl group with the proviso that at least one of R.sub.1 and R.sub.2 is an aryl group, further wherein n is 1-3. ##STR00001##

A method including the step contacting an olefin, an alcohol, a metallosilicate catalyst and a solvent, wherein the solvent comprises structure (I): wherein R.sub.1 and R.sub.2 are each selected from the group consisting of an aryl group and an alkyl group with the proviso that at least one of R.sub.1 and R.sub.2 is an aryl group, further wherein n is 1-3. ##STR00001##

A halogenated ca-fluoroether of the formula (2) (where HaloR represents haloalkyl; R.sup.1 represents hydrogen, halogen, alkyl or substituted alkyl; and R.sup.2 represents alkyl or substituted alkyl) is produced efficiently on an industrial scale by reacting a halogenated aldehyde of the formula (1) (where HaloR represents haloalkyl) or an equivalent thereof with hydrogen fluoride.

##STR00001##

Provided are a lubricant that is highly resistant to contamination and highly thermally stable, a lubricant that is highly durable and highly heat resistant, and a magnetic disk. A fluoropolyether compound contains perfluoropolyether groups, end groups each containing at least one hydroxyl group, and a linking group that is comprised of a C.sub.4-C.sub.14 hydrocarbon group and that contains at least one hydroxyl group.

An object of the present invention is to provide a chemical liquid purification method which makes it possible to obtain a chemical liquid having excellent defect inhibition performance. Another object of the present invention is to provide a chemical liquid. The chemical liquid purification method according to an embodiment of the present invention is a chemical liquid purification method including obtaining a chemical liquid by purifying a substance to be purified containing an organic solvent, in which a content of the stabilizer in the substance to be purified with respect to the total mass of the substance to be purified is equal to or greater than 0.1 mass ppm and less than 100 mass ppm.