4 results about "Hydroxycitronellal" patented technology

This invention relates to the field of electrochemistry, specifically disclosing a method for the selective electrooxidation of polyhydroxy compounds. More specifically, it involves the selective electrooxidation of compound (Ⅰ) to obtain compound (Ⅱ). This invention reduces the large number of byproducts caused by the simultaneous oxidation of multiple pairs of hydroxyl groups in traditional oxidation methods. By selectively electrooxidizing to obtain compound (Ⅱ), and then reducing compound (Ⅱ) to obtain compound (Ⅲ), for example, selectively electrooxidizing hydroxycitronellol (3,7-dimethyl-1,7-octanediol, compound 1a) to obtain (7-hydroxy-3,7-dimethyloctanoic acid, compound 2b), and then reducing it with compound 1b to obtain compound 1c. Compound 1c is hydroxycitronellol (CAS: 107-75-5), which has a strong floral fragrance. By changing the number of carbon atoms in hydroxycitronellol without changing the functional groups, a series of small molecule compounds with different fragrances can be produced efficiently and with low pollution.

A synthesis method of heliotropin relates to the technical field of heliotropin synthesis, and comprises the following steps: S1, uniformly mixing glyoxylic acid, glacial acetic acid and benzodioxole, then slowly dropwise adding concentrated sulfuric acid under a first temperature condition, reacting for a period of time, slowly dropwise adding nitric acid under a second temperature condition, reacting for a period of time, then adding hydrochloric acid, and reacting for a period of time to obtain a mixed solution; reaction liquid is obtained; s2, filtering the reaction liquid obtained in the step S1 to obtain a heliotropin crude product and filtrate; s3, recovering the filtrate obtained by filtering in S2, and washing, filtering and drying the heliotropin crude product obtained in S2 to obtain heliotropin; the heliotropin is prepared by a one-pot method, so that the synthesis steps are simplified, the whole synthesis method is simpler and more convenient to operate, the synthesis efficiency is improved, redundant wastewater is not generated, meanwhile, the recovery rate of filtrate can reach 95-99%, and the cost of raw materials is reduced.

This invention relates to the field of transportation equipment technology, specifically to a high-strength, break-resistant conveyor belt for a tobacco machine and its preparation method. The invention first grafts acrylic acid onto low-density polyethylene, then reacts it with a polyurethane prepolymer to prepare a compatibilizer; subsequently, it reacts 3-amino-1,2,4-triazole, hydroxycitronellol, and 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide to prepare a flame retardant; the polyurethane prepolymer is reacted with dihydroxy-terminated polydimethylsiloxane, chain extended, and then the flame retardant is added for end-capping and curing to obtain a silicon-containing flame-retardant polyurethane. High-density polyethylene and the silicon-containing flame-retardant polyurethane are mixed, and a compatibilizer, carbon nanotubes, light calcium carbonate, and an antioxidant are added. After melting and stirring, the mixture is cooled and dicumyl peroxide is added for crosslinking. Following injection molding, demolding, cutting, trimming, edge sealing, and polishing, the finished product is obtained.

The invention provides a spice composition with litchi fruit fragrance and peony flower fragrance and application of the spice composition. The perfume composition is prepared from the following components: 0.05 to 0.1 weight percent of berry ethyl ester, 2.0 to 3.0 weight percent of tropical fruit fragrance base, 1.0 to 2.0 weight percent of bitter orange essential oil, 3.0 to 5.0 weight percent of phenethyl alcohol, 0.05 to 0.1 weight percent of hydroxycitronellal, 0.05 to 0.1 weight percent of alpha-ionone, 5.0 to 10.0 weight percent of seven-flower lotus fragrance base, 5.0 to 10.0 weight percent of methyl dihydrojasmonate and the balance of water. And the balance of auxiliary spices and / or dispersants and / or stabilizers. The spice composition disclosed by the invention can present a fresh and sweet litchi fragrance front tone and a clear and full peony fragrance middle tone, and can be used for daily chemical products to meet the technical requirements on high-grade fragrance expression.