The present disclosure relates to the technical field of hexanediol production, and provides a production method and a production device of high-purity 1,6-hexanediol. A dipic acid and a C.sub.6 mixed alcohol are mixed to conduct esterification to obtain a product feed liquid including an adipic acid diester, and the high-purity 1,6-hexanediol is obtained through hydrogenation reduction and distillation. In addition to being used as a reaction raw material, the C.sub.6 mixed alcohol further acts as a water-carrying agent; water produced by the esterification is removed by azeotropy, thereby promoting a smooth reaction process to realize the esterification without a catalyst. The method does not need the catalyst during esterification, and the subsequent hydrogenation reduction can be directly conducted with no complicated post-treatment procedure required after the esterification. In addition, the method has simple preparation steps, recyclable C.sub.6 mixed alcohol, less wastewater production, desirable environmental protection, and high product purity and yield.

The present disclosure relates to the technical field of hexanediol production, and provides a production method and a production device of high-purity 1,6-hexanediol. A dipic acid and a C.sub.6 mixed alcohol are mixed to conduct esterification to obtain a product feed liquid including an adipic acid diester, and the high-purity 1,6-hexanediol is obtained through hydrogenation reduction and distillation. In addition to being used as a reaction raw material, the C.sub.6 mixed alcohol further acts as a water-carrying agent; water produced by the esterification is removed by azeotropy, thereby promoting a smooth reaction process to realize the esterification without a catalyst. The method does not need the catalyst during esterification, and the subsequent hydrogenation reduction can be directly conducted with no complicated post-treatment procedure required after the esterification. In addition, the method has simple preparation steps, recyclable C.sub.6 mixed alcohol, less wastewater production, desirable environmental protection, and high product purity and yield.

Provided herein are formulations of plated powders of acetaldehyde precursors. Also provided herein are methods of making and using the powders.

Provided herein are formulations of plated powders of acetaldehyde precursors. Also provided herein are methods of making and using the powders.

Provided herein is a compound having the formula I

##STR00001##

wherein R1 and R2 are independently selected from a branched or straight C.sub.1-C.sub.6 alkyl and a C.sub.1-C.sub.6 alkenyl, n is 1, 2, 3, 4, 5 or 6 and x is independently 0, 1 or 2; provided that when n is 1, x is 2. Also provided herein is a method of releasing acetaldehyde into an aqueous solution comprising delivering a compound of formula I to the aqueous solution wherein R1 and R2 are independently selected from a branched or straight C.sub.1-C.sub.6 alkyl and a C.sub.1-C.sub.6 alkenyl, n is 1, 2, 3, 4, 5 or 6 and x is independently 0, 1 or 2; provided that when n is 1, x is 2. Also provided is a flavor or aroma-modifying composition comprising: i) a flavor or aroma-conferring or modifying ingredient, at least one compound according to formula (I) above; ii) at least one ingredient selected from the group consisting of a flavor carrier and a flavor base; and iii) optionally at least one flavor adjuvant.

Provided herein is a compound having the formula I

##STR00001##

wherein R1 and R2 are independently selected from a branched or straight C.sub.1-C.sub.6 alkyl and a C.sub.1-C.sub.6 alkenyl, n is 1, 2, 3, 4, 5 or 6 and x is independently 0, 1 or 2; provided that when n is 1, x is 2. Also provided herein is a method of releasing acetaldehyde into an aqueous solution comprising delivering a compound of formula I to the aqueous solution wherein R1 and R2 are independently selected from a branched or straight C.sub.1-C.sub.6 alkyl and a C.sub.1-C.sub.6 alkenyl, n is 1, 2, 3, 4, 5 or 6 and x is independently 0, 1 or 2; provided that when n is 1, x is 2. Also provided is a flavor or aroma-modifying composition comprising: i) a flavor or aroma-conferring or modifying ingredient, at least one compound according to formula (I) above; ii) at least one ingredient selected from the group consisting of a flavor carrier and a flavor base; and iii) optionally at least one flavor adjuvant.

The invention provides a novel hydrocarbon-containing carboxylic acid, hydrocarbon-containing sulfonic acid, hydrocarbon-containing sulfuric acid ester, or a salt thereof, and a surfactant. Each of them is a compound represented by the following formula (1):
CR.sup.1R.sup.2R.sup.4—CR.sup.3R.sup.5—X-A
wherein R.sup.1 to R.sup.5 are each H or a monovalent substituent; at least one of R.sup.1 or R.sup.3 is a group represented by the formula: —Y—R.sup.6; at least one of R.sup.2 or R.sup.5 is a group represented by the formula: —X-A or a group represented by the formula: —Y—R.sup.6; and As at the respective appearances are the same as or different from each other, and are each —COOM, —SO.sub.3M, or —OSO.sub.3M.

This invention relates to the field of plastic waste decomposition. More specifically, the invention comprises products obtained from the decomposition of plastic waste.

This invention relates to the field of plastic waste decomposition. More specifically, the invention comprises products obtained from the decomposition of plastic waste.

A chemically amplified negative resist composition comprising an alcohol compound of specific structure as a crosslinker has a high sensitivity and dissolution contrast and forms a pattern of good profile with reduced values of LER and CDU.