The present application relates to a compound of the following formula (I)

##STR00001## in which —R.sup.1, R.sup.2, R.sup.3 and R.sup.4 represent independently of each other H or a (C.sub.1-C.sub.30) alkyl group, the total sum of the number of carbon atoms of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 being equal to 6+4x, x being a whole number of between 1 and 6, provided that: at most two of the groups R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are H, R.sup.5 represents H, OR, or NR′R″ R, R′ and R″, identical or different, represent H, a (C1-C10) alkyl group, at least one of groups R.sup.1, R.sup.2, R.sup.3 or R.sup.4 comprises or is a tertiobutyl group. (I) the method for preparing same and the uses thereof as a plasticising lubricant, surfactant or in a cosmetic composition.

The present application relates to a compound of the following formula (I)

##STR00001## in which —R.sup.1, R.sup.2, R.sup.3 and R.sup.4 represent independently of each other H or a (C.sub.1-C.sub.30) alkyl group, the total sum of the number of carbon atoms of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 being equal to 6+4x, x being a whole number of between 1 and 6, provided that: at most two of the groups R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are H, R.sup.5 represents H, OR, or NR′R″ R, R′ and R″, identical or different, represent H, a (C1-C10) alkyl group, at least one of groups R.sup.1, R.sup.2, R.sup.3 or R.sup.4 comprises or is a tertiobutyl group. (I) the method for preparing same and the uses thereof as a plasticising lubricant, surfactant or in a cosmetic composition.

A process can be used for preparing methyl methacrylate (MMA), by direct oxidative esterification of methacrolein. The MMA and polymers produced therefrom feature a very low yellowness index. A workup of the reactor output from the oxidative esterification of methacrolein allows for particularly discolouring by-products to be removed or degraded without significant MMA losses.

A process can be used for preparing methyl methacrylate (MMA), by direct oxidative esterification of methacrolein. The MMA and polymers produced therefrom feature a very low yellowness index. A workup of the reactor output from the oxidative esterification of methacrolein allows for particularly discolouring by-products to be removed or degraded without significant MMA losses.

A catalyst for production of carboxylic acid ester, containing: catalyst metal particles; and a support supporting the catalyst metal particles, wherein the catalyst has a hollow particle ratio of 40% or less.

A catalyst for production of carboxylic acid ester, containing: catalyst metal particles; and a support supporting the catalyst metal particles, wherein the catalyst has a hollow particle ratio of 40% or less.

The invention relates to a process for preparing a carboxylic ester by reacting an aldehyde in the presence of an aluminum alkoxide, wherein the aluminum alkoxide is obtained either by reacting an aluminum hydride with an aldehyde or by reacting a different aluminum alkoxide with a carboxylic ester.

The invention relates to a process for preparing a carboxylic ester by reacting an aldehyde in the presence of an aluminum alkoxide, wherein the aluminum alkoxide is obtained either by reacting an aluminum hydride with an aldehyde or by reacting a different aluminum alkoxide with a carboxylic ester.

The invention relates to a process for preparing a carboxylic ester by reacting an aldehyde in the presence of an aluminum alkoxide, wherein the aluminum alkoxide is obtained either by reacting an aluminum hydride with an aldehyde or by reacting a different aluminum alkoxide with a carboxylic ester.

A continuous flow process for the preparation of one or more esters of lactic acid and 2-hydroxy-3-butenoic acid or α-hydroxy methionine analogues from a sugar in the presence of a solid Lewis acid catalyst and a solvent comprising an organic solvent and water. The invention provides a means for stabilizing a Lewis acid catalyst for use in a continuous reaction process wherein the water is present in an amount of up to or equal to 10 vol. % of the organic solvent.