57 results about "Silurodiscoides" patented technology

The invention relates to a red pine caterpillar sex pheromone lure core. A cuff-type rubber stopper is used as a carrier, and a hexane solution with a red pine caterpillar sex pheromone is dropped onto the carrier. The red pine caterpillar sex pheromone comprises: cis 5 , trans-7-dodecadienol, cis-5, trans-7-dodecadiene acetate and cis-5, trans-7-dodecadienoate. The present invention also relates to the use of the described red pine caterpillar sex pheromone lure core, which can be used for monitoring the pest and preventing and smelting through a large number of trapping and smelting in areas or countries where the red pine caterpillar occurs; Check for invasiveness of the species.

The invention relates to a sex attractant and a trapping core for Dendrolimus tabulaeformis and a preparation method of the trapping core. The attractant comprises the following components in percentage by weight: 35-40% of cis-5, trans-7 dodecadiene acetate, 35-40% of cis-5, trans-7 codlemone, 2-18% of cis-5, trans-7 dodecadiene propionate, 14-1% of cis-5 dodecene acetate and 14-1% of cis-5 lanolin alcohol. The prepared sex attractant is directly dropwise added to a diaphragm of a cuff type compounded rubber cork or a polyethylene pipe to prepare the trapping core for Dendrolimus tabulaeformis, and an antioxidant and an ultraviolet adsorbent are added when the trapping core is prepared. The attractant has the advantages of sensitivity, high efficiency, long duration, low price and the like, can be used for population monitoring and a great deal trapping and killing as well as prevention and control of Dendrolimus tabulaeformis and accurately predicting the incidence density of descendant population, and has good economic benefits and ecologic benefits.

The invention discloses a synthesis method of Z9,11-dodecadienol acetate. The synthesis method comprises the following steps: (1) by taking 1,9-nonanediol as a raw material, performing unilateral oxidation to synthesize 9-hydroxyl-1-nonanal; (2) synthesizing an intermediate Z9,11-dodecadienol; (3) synthesizing the Z9,11-dodecadienol acetate. The synthesis method has the advantages of mild synthesis conditions, short reaction time, easy operation, wide application range, high yield, low cost and easy industrialization, the process flow is shortened, and three wastes are few. In a synthesis reaction of the 9-hydroxyl-1-nonanal, silica gel is added, the dispersion of PCC (Pyridinium Chlorochromate) is facilitated, the opportunity of oxidation of two hydroxyls is reduced by adding the PCC in batches, the reaction is performed at room temperature, and energy is saved; after the reaction is completed, ethyl ether and water are added for extraction, and the yield of reactants is improved. In the synthesis process of the Z9,11-dodecadienol, a phase transfer catalyst 18-crown ether-6 and non-polar solvent benzene are adopted to react so as to obtain a cis-product; meanwhile, weak alkali potassium carbonate is adopted, so that the protection of the hydroxyls of the 9-hydroxyl-1-nonanal is avoided, and a reaction synthesis route is shortened.

A perfume composition comprising an effective amount of at least one alkadienenitrile selected from 4,8-undecadienenitrile and isomers thereof, 4,9-dodecadienenitrile and isomers thereof, and 4,10-tridecadienenitrile and isomers thereof. The isomers of 4,8-undecadienenitrile comprise Z,Z-4,8-undecadienenitrile, E,E-4,8-undecadienenitrile, and mixed Z / E isomers of 4,8-undecadienenitrile; the isomers of 4,9-dodecadienenitrile comprise Z,Z-4,9-dodecadienenitrile, E,E-4,9-dodecadienenitrile, and mixed Z / E isomers of 4,9-dodecadienenitrile; and the isomers of 4,10-tridecadienenitrile comprise Z,Z-4,10-tridecadienenitrile, E,E-4,10-tridecadienenitrile, and mixed Z / E isomers of 4,10-tridecadienenitrile. A composition comprising an effective amount of at least one alkadienenitrile selected from 4,8-undecadienenitrile and isomers thereof, 4,9-dodecadienenitrile and isomers thereof, and 4,10-tridecadienenitrile and isomers thereof. Processes for the preparation of the isomeric alkadienenitriles are provided. The isomeric alkadienenitriles have a range of fresh, citric, ozonic and floral notes of exceptional strength.