Chemical engineers ensure the efficiency and safety of chemical processes, adapt the chemical make-up of products to meet environmental or economic needs, and apply new technologies to improve existing processes. 98-89-5, Name is Cyclohexanecarboxylic acid, molecular formula is C7H12O2, SDS of cas: 98-89-5, belongs to benzisoxazole compound, is a common compound. In a patnet, author is WANG, GJ, once mentioned the new application about 98-89-5.
SYNTHESIS AND CATALYTIC PROPERTIES OF HYDROPHOBICALLY-MODIFIED POLY(ALKYLMETHYLDIALLYLAMMONIUM CHLORIDES)
Novel non-cross-linked and cross-linked, hydrophobically modified homo- and copolymers were synthesized by free-radical cyclo(co)polymerization of alkylmethyldiallylammonium chloride monomers in aqueous solution using ammonium persulfate as the initiator. Cross-linking was brought about by addition of a small amount of N,N’-methylenebisacrylamide. The cross-linked homo- and copolymers showed an increase of their reduced viscosity in aqueous solution upon the controlled introduction of cross-linking agent into their chemical structure. Viscosity measurements revealed that the conformational transition of polysoaps to compact coils in aqueous solution is strongly dependent upon the hydrophobic group content of the polysoaps. The formation of hydrophobic microdomains is akin to intramolecular micelle formation. Depending on the hydrophobic group content and the percentage of cross-linking, intermolecular aggregation was also revealed by viscosity measurements at higher concentrations of polysoap. The hydrophobic microdomains of the non-cross-linked and cross-linked polysoaps were characterized by hypsochromic shifts of the long-wavelength absorption band of Methyl Orange as a solvatochromic probe, non-covalently bound to the macromolecule. Catalysis of the unimolecular decarboxylation of 6-nitrobenzisoxazole-3-carboxylate by the non-cross-linked and crosslinked copolymers was investigated in aqueous solution at pH 11.3 and 30 degrees C. The cross-linked polysoaps exhibited higher catalytic activities for decarboxylation than the corresponding non-cross-linked analogues. A maximum in rate constant was found at about 0.2% (w/w) of cross-linking agent in the cross-linked polysoaps. The decarboxylation rate is strongly dependent upon the hydrophobic group content in the polysoaps.
Note that a catalyst decreases the activation energy for both the forward and the reverse reactions and hence accelerates both the forward and the reverse reactions. you can also check out more blogs about 98-89-5. SDS of cas: 98-89-5.
Reference:
Benzisoxazole – Wikipedia,
,Benzisoxazole – an overview | ScienceDirect Topics