The present application relates to methods of hydrolyzing a polyester by contacting the polyester with a solid acid catalyst. Also disclosed are solid acid catalysts that are useful for hydrolyzing a polyester and methods of making the solid acid catalysts. Furthermore, compositions including one or both of a dicarboxylic acid and a diol, and at least one solid acid catalyst are also disclosed.

The present application relates to methods of hydrolyzing a polyester by contacting the polyester with a solid acid catalyst. Also disclosed are solid acid catalysts that are useful for hydrolyzing a polyester and methods of making the solid acid catalysts. Furthermore, compositions including one or both of a dicarboxylic acid and a diol, and at least one solid acid catalyst are also disclosed.

Disclosed are a composite metal catalyst composition capable of increasing efficiency and economic feasibility of a reaction through simplification of a reaction process, and providing 1,4-cyclohexanedimethanol with high purity for a shorter time while minimizing byproducts; and a method and apparatus for preparing 1,4-cyclohexanedimethanol with high purity using the same. The present invention provides a composite metal catalyst composition for converting an aromatic dicarboxylic acid into an alicyclic diol compound, the composition containing: a first metal catalyst including a palladium (Pd) compound; and a second metal catalyst including a ruthenium (Ru) compound, a tin (Sn) compound, and a platinum (Pt) compound, and a method and apparatus for preparing 1,4-cyclohexanedimethanol using the same.

Disclosed are a composite metal catalyst composition capable of increasing efficiency and economic feasibility of a reaction through simplification of a reaction process, and providing 1,4-cyclohexanedimethanol with high purity for a shorter time while minimizing byproducts; and a method and apparatus for preparing 1,4-cyclohexanedimethanol with high purity using the same. The present invention provides a composite metal catalyst composition for converting an aromatic dicarboxylic acid into an alicyclic diol compound, the composition containing: a first metal catalyst including a palladium (Pd) compound; and a second metal catalyst including a ruthenium (Ru) compound, a tin (Sn) compound, and a platinum (Pt) compound, and a method and apparatus for preparing 1,4-cyclohexanedimethanol using the same.

A method for preparing dimethyl 1,4-cyclohexanedicarboxylate (DMCD) is provided. The method includes hydrogenating dimethyl terephthalate (DMT) under a condition of a pressure of 20 to 30 kg/cm.sup.2 to continuously prepare the DMCD, and thereby increasing the selectivity of the DMCD. A method for preparing 1,4-cyclohexanedimethanol (CHDM) is further provided.

A method for preparing dimethyl 1,4-cyclohexanedicarboxylate (DMCD) is provided. The method includes hydrogenating dimethyl terephthalate (DMT) under a condition of a pressure of 20 to 30 kg/cm.sup.2 to continuously prepare the DMCD, and thereby increasing the selectivity of the DMCD. A method for preparing 1,4-cyclohexanedimethanol (CHDM) is further provided.

Embodiments of the invention are directed to cooling compounds and cooling compositions having a unique cooling perception, as well as various edible, potable, and/or cosmetic products containing one or more cooling compounds having a general Formula (I): wherein Q is selected from CR.sup.1R.sup.2 or CH-CH(CH.sub.2OR.sup.8)CH.sub.2OR.sup.9; wherein R.sup.1 and R.sup.2 are independently selected from the group consisting of CHO, CO.sub.2H; CH.sub.2CH.sub.2OH; CHR.sup.10OR.sup.11, and CHR.sup.10OR.sup.12; wherein R.sup.8 and R.sup.9 are independently H, or in combination form a spiroacetal or spiroketal moiety; wherein each R.sup.10 is independently H or CH.sub.3; wherein R.sup.11 and R.sup.12 are independently selected from H, substituted or unsubstituted C1 to C6 alkyls, substituted or unsubstituted cycloalkyls, substituted or unsubstituted alkaryls, substituted or unsubstituted aryls or heteroaryls, and substituted or unsubstituted acyls, or wherein R.sup.11 and R.sup.12 in combination form a spiroketal or a spiroacetal moiety; wherein R.sup.3, R.sup.4, R.sup.5, and R.sup.6 are independently selected from H, CH.sub.3, and CH.sub.2CH.sub.3; and wherein R.sup.7 is selected from H, iso-propyl, isopropenyl, and sec-butyl; with the proviso that R.sup.3, R.sup.4, R.sup.5, R.sup.6, and R.sup.7 are not all H.

##STR00001##

Processes and facilities for producing a recycled content organic chemical compound directly or indirectly from waste plastic. Processing schemes are described herein for converting waste plastic (or hydrocarbon having recycled content derived from waste plastic) into useful intermediate chemicals and final products. In some aspects, recycled content aromatics (r-aromatics) can be processed to provide recycled content paraxylene (r-paraxylene), which can then be used to provide recycled content dimethyl terephthalate (r-DMT). The r-DMT can then be used to form a variety of other chemical and end products, including recycled content cyclohexanedimethanol (r-CHDM) and various recycled content polymers, such as polyesters and aramid polymers.

Processes and facilities for producing a recycled content organic chemical compound directly or indirectly from waste plastic. Processing schemes are described herein for converting waste plastic (or hydrocarbon having recycled content derived from waste plastic) into useful intermediate chemicals and final products. In some aspects, recycled content aromatics (r-aromatics) can be processed to provide recycled content paraxylene (r-paraxylene), which can then be used to provide recycled content dimethyl terephthalate (r-DMT). The r-DMT can then be used to form a variety of other chemical and end products, including recycled content cyclohexanedimethanol (r-CHDM) and various recycled content polymers, such as polyesters and aramid polymers.

Process for preparing the dialdehyde of vinylcyclohexene.