Disclosed is a method of rearrangement of the molecular structure of isomers of TEXANOL, characterized in that two isomers in TEXANOL is subjected to rearrangement of the molecular structure at a certain temperature and pressure, and 2,2,4-trimethyl-1,3-pentanediol-3-isobutyrate and 2,2,4-trimethyl-1,3-pentanediol-1-isobutyrate in TEXANOL following the rearrangement are in a mass ratio of 31.81-38.65:60.80-67.65. The process of the present invention is simple, no catalyst and other aids are required, and the content of the primary ester in TEXANOL can be significantly increased, so as to improve the volatilization rate of TEXANOL in a paint film, thereby reducing the drying time of the paint film and increasing the number of scrubbing of the paint film, such that the construction conditions of aqueous acrylic paints for exterior walls become relaxed, and the occurrence of floating, whitening, efflorescence, and cracking of the paint film due to water absorption by the non-dried or partly dried paint film during moist or rainy periods is avoided.

Disclosed is a method of rearrangement of the molecular structure of isomers of TEXANOL, characterized in that two isomers in TEXANOL is subjected to rearrangement of the molecular structure at a certain temperature and pressure, and 2,2,4-trimethyl-1,3-pentanediol-3-isobutyrate and 2,2,4-trimethyl-1,3-pentanediol-1-isobutyrate in TEXANOL following the rearrangement are in a mass ratio of 31.81-38.65:60.80-67.65. The process of the present invention is simple, no catalyst and other aids are required, and the content of the primary ester in TEXANOL can be significantly increased, so as to improve the volatilization rate of TEXANOL in a paint film, thereby reducing the drying time of the paint film and increasing the number of scrubbing of the paint film, such that the construction conditions of aqueous acrylic paints for exterior walls become relaxed, and the occurrence of floating, whitening, efflorescence, and cracking of the paint film due to water absorption by the non-dried or partly dried paint film during moist or rainy periods is avoided.

Disclosed is a method of rearrangement of the molecular structure of isomers of TEXANOL, characterized in that two isomers in TEXANOL is subjected to rearrangement of the molecular structure at a certain temperature and pressure, and 2,2,4-trimethyl-1,3-pentanediol-3-isobutyrate and 2,2,4-trimethyl-1,3-pentanediol-1-isobutyrate in TEXANOL following the rearrangement are in a mass ratio of 31.81-38.65:60.80-67.65. The process of the present invention is simple, no catalyst and other aids are required, and the content of the primary ester in TEXANOL can be significantly increased, so as to improve the volatilization rate of TEXANOL in a paint film, thereby reducing the drying time of the paint film and increasing the number of scrubbing of the paint film, such that the construction conditions of aqueous acrylic paints for exterior walls become relaxed, and the occurrence of floating, whitening, efflorescence, and cracking of the paint film due to water absorption by the non-dried or partly dried paint film during moist or rainy periods is avoided.

The present invention primarily relates to a method for producing a compound of formula (I) and/or a physiologically acceptable salt thereof from vanillylmandelic acid and/or a physiologically acceptable salt thereof. The present invention further relates to the simultaneous use of one or more iodide salt(s) or hydrate(s) thereof, one or more reducing agent(s), one or more inorganic and/or organic acid(s) other than phosphonic acid, and methanol and/or a physiologically acceptable salt thereof or an alcohol of formula (II) as defined herein and/or a physiologically acceptable salt thereof for converting vanillylmandelic acid and/or a physiologically acceptable salt thereof into a compound of formula (I) and/or a physiologically acceptable salt thereof or into a compound of formula (III) as defined herein and/or a physiologically acceptable salt thereof.

The present invention primarily relates to a method for producing a compound of formula (I) and/or a physiologically acceptable salt thereof from vanillylmandelic acid and/or a physiologically acceptable salt thereof. The present invention further relates to the simultaneous use of one or more iodide salt(s) or hydrate(s) thereof, one or more reducing agent(s), one or more inorganic and/or organic acid(s) other than phosphonic acid, and methanol and/or a physiologically acceptable salt thereof or an alcohol of formula (II) as defined herein and/or a physiologically acceptable salt thereof for converting vanillylmandelic acid and/or a physiologically acceptable salt thereof into a compound of formula (I) and/or a physiologically acceptable salt thereof or into a compound of formula (III) as defined herein and/or a physiologically acceptable salt thereof.

The present invention relates to a process for producing ethyl esters of polyunsaturated fatty acids, comprising transesterifying triacylglycerols in extracted plant lipid.

The present invention relates to a process for producing ethyl esters of polyunsaturated fatty acids, comprising transesterifying triacylglycerols in extracted plant lipid.

The invention relates to the production of (meth)acrylic esters according to a continuous process by transesterification, and in particular to the purification of a crude reaction mixture comprising a C.sub.4-C.sub.12 (meth)acrylic ester using a divided wall column employed in a particular configuration. This configuration results in a simplification of the purification process with a reduced energy consumption and a minimized content of impurities present in the purified (meth)acrylic ester. The invention also relates to a process for the production of C.sub.4-C.sub.12 (meth)acrylic ester comprising this recovery/purification process.

The invention relates to the production of (meth)acrylic esters according to a continuous process by transesterification, and in particular to the purification of a crude reaction mixture comprising a C.sub.4-C.sub.12 (meth)acrylic ester using a divided wall column employed in a particular configuration. This configuration results in a simplification of the purification process with a reduced energy consumption and a minimized content of impurities present in the purified (meth)acrylic ester. The invention also relates to a process for the production of C.sub.4-C.sub.12 (meth)acrylic ester comprising this recovery/purification process.

A process to form a composition comprising an asymmetrical polyene, the asymmetrical polyene comprising an “α,β unsaturated-carbonyl end” and a “C—C double bond end,” the process comprising: reacting an alkene- or polyene-containing alcohol with an alkyl ester of an α,β unsaturated carboxylic acid in the presence of at least the following components A) through C) to form a solution comprising an asymmetrical polyene: A) a lithium salt; B) a component selected from the group consisting of hydroquinone, an alkyl-substituted phenol, a substituted alkyl-substituted phenol, an alkyl-substituted hydroquinone, a substituted alkyl-substituted hydroquinone, and combinations thereof; and C) an N-oxyl-containing compound; wherein the “α,β unsaturated-carbonyl end” of the asymmetrical polyene is selected from the group consisting of structures a) through c), as described herein, and wherein the “C—C double bond end” of the asymmetrical polyene is selected from the group consisting of structures 1) through 17), as described herein.