Abstract:
Provided are a production method for compound (II) including reacting compound (I) with a halogenating agent in the presence of at least 0.5 equivalents, relative to compound (I), of a nitrogen atom-containing polar aprotic solvent; a composition containing compound (II), a halogenating agent or the like, and at least 0.5 equivalents, relative to compound (II), of a nitrogen atom-containing polar aprotic solvent; a stabilization method for compound (II); and compound (II). Accordingly, a method for producing compound (II) with high purity in an industrially advantageous manner, a composition in which this production intermediate is stabilized, and a stabilization method for compound (II) are provided. R represents a hydrogen atom or a methyl group, Y 1 and Y 2 each represent a chemical single bond, -O-, -O-C(=O)-, -C(=O)-O-, or the like, G 1 represents a divalent chain aliphatic group having a carbon number of 1-20 or the like, A 1 and A 2 each represent a divalent aromatic hydrocarbon group having a carbon number of 3-12, a divalent alicyclic hydrocarbon group having a carbon number of 3-12, or the like, n represents 0 or 1, and X represents a halogen atom.
Abstract:
The present invention provides a compound represented by general formula (1). (In the formula, R 1 represents an alkyl group having 2 to 9 carbon atoms, an alkenyl group having 2 to 9 carbon atoms, a cyclic alkyl group having 3 to 10 carbon atoms which may have a substituent, or a phenyl group which may have a substituent; R 2 represents an alkyl group having 1 to 3 carbon atoms; R 3 to R 5 independently represent a hydrogen atom, or an alkyl group having 1 to 3 carbon atoms; R 6 represents an alkyl group having 1 to 5 carbon atoms, an alkenyl group having 2 to 5 carbon atoms, a cyclic alkyl group having 3 to 10 carbon atoms which may have a substituent, or an alkoxy group having 1 to 5 carbon atoms; n represents 0 or 1; and the wavy line represents a cis form, a trans form or a mixture of a cis form and a trans form.)
Abstract:
This invention relates to a process for preparing succinic acid and succinate ester from a succinic acid salt in fermentation broth. In the first stage of this invention, renewable carbon resources are utilized to produce succinic acid through biological fermentation. The succinic acid salt in the fermentation process is subjected to double displacement reaction with a strong acid leading to release of succinic acid. Succinic acid is recovered by fractional crystallization integrated with simulated moving bed chromatography to produce succinic acid and succinate ester.
Abstract:
A process for ring hydrogenation of a benzenepolycarboxylic acid or derivative thereof, includes contacting a feed stream comprising the acid or derivative thereof with a hydrogen containing gas in the presence of a catalyst under hydrogenation conditions to produce a hydrogenated product, wherein the catalyst contains rhodium and ruthenium.
Abstract:
Disclosed is a method for improving vibration damping of a substrate, such as the underbody of an automobile. The method comprises applying a plastisol which comprises a polymeric component and a plasticizer. The fused plastisol has improved damping behavior as determined using Dynamic Mechanical Thermal Analysis. Novel plastisols and novel plasticizers are also disclosed.
Abstract:
The present disclosure provides compounds that are derivatives of 2,2,6-trimethylcyclohexanecarboxylate. The disclosed compounds have useful flavor and fragrance characteristics. The present disclosure also provides flavor and fragrance compositions.
Abstract:
Cis and trans ruthenium complexes that can be used as catalysts for ring opening metathesis polymerization (ROMP) are described. The complexes are generally square pyramidal in nature, having two anionic ligands X. Corresponding cationic complexes where one or both of the anionic ligands X are replaced by a non-co-ordinating anionic ligand are also described. Polymers such as polydicyclopentadiene (PDCPD) can be prepared using the catalysts.