9 results about "Undecylenic acid" patented technology

The present invention primarily relates to the use of a fatty acid ester or of a mixture of two or more fatty acid esters or of a mixture comprising one or more fatty acid esters, wherein the fatty acid ester or one, two, three or more, preferably all, of the fatty acid ester(s) is / are selected from the group consisting of 3-hydroxypropyl caprylate, glyceryl monocaprylate, 3-hydroxypropyl undecylenate and glyceryl monoundecylenate, for modifying the sensory properties of a skin care product. The present invention further relates to methods for modifying the sensory properties of a skin care product as well as to methods for manufacturing a skin care product and to particular skin care products.

This invention discloses a microwave-assisted synthesis process for 11-bromoundecenoic acid. The specific steps are as follows: undecenoic acid is mixed with a nonpolar solvent, an initiator is added, and the mixture is stirred. The resulting preliminary reaction mixture is then transferred to a microwave reactor. After adjusting the microwave power and controlling the temperature, the mixed solution undergoes an anti-Markovnikov addition reaction with hydrogen bromide gas within the microwave reactor to generate a bromoundecenoic acid solution. The resulting addition solution is then transferred to a crystallization vessel for freeze crystallization. The crystallized product is filtered to obtain 11-bromoundecenoic acid. This invention utilizes hydrogen bromide aeration and mechanical stirring in the microwave reactor to increase the gas-liquid mass transfer area and improve mass transfer efficiency. The microwave-assisted synthesis of 11-bromoundecenoic acid achieves molecular-level stirring, significantly shortening the reaction time and effectively increasing the yield of the target product. Simultaneously, the use of a nonpolar solvent with weak microwave absorption effectively avoids the thermal effect generated by microwaves, resulting in an even higher yield of the target product.

The invention discloses a high-dispersity fluorescent whitening functional aid as well as a preparation method and application thereof, and relates to the technical field of functional dyes. The high-dispersity fluorescent whitening functional aid comprises the following raw materials in parts by weight: 40-50 parts of a fluorescent whitening agent, 10-15 parts of sodium lignin sulfonate, 5-8 parts of a pH buffer agent, 3-5 parts of an anti-aging agent and 50-70 parts of deionized water. Undecylenic acid and hexaethylene glycol monomethyl ether react to generate an ester group compound, the ester group compound generates an epoxy compound under the action of hydrogen peroxide and formic acid, 4, 4 '-diaminostilbene-2, 2'-disulfonic acid and trimellitic anhydride react to generate a tetracarboxyl compound, and the tetracarboxyl compound and the epoxy compound react to generate an epoxy compound. And reacting the epoxy compound with the tetracarboxyl compound to generate the fluorescent whitening agent. The prepared high-dispersity fluorescent whitening functional aid has excellent dispersity, stability and anti-aging performance, and has important application significance in the field of cotton fiber textiles.

The development of biolubricants from vegetable oils, more specifically refers to capric, caprylic, lauric, myristic, palmitic, stearic, oleic, linoleic, linolenic, ricinoleic, isooleic, isostearic, undecylenic fatty acids whose applications are for compressors in refrigerators, freezers, air conditioners, industrial compressors and as lubricants for the automotive line is provided. Such products are used in refrigeration compressors, more specifically in refrigerators and air conditioners, industrial compressors and lubricants for the small and large automotive sector. Due to the use of 90% renewable raw materials, the products are biodegradable, non-toxic and safe to be handled. These products, after use as lubricants, can be discarded due to their biodegradability or recovered to be used in other less rigid applications, such as for the production of polyester resins, polyols for the production of polyurethanes, or production of plasticizers for PVC, paints and varnishes.

The invention discloses a preparation method and application of an ethylene and polar monomer copolymerized and high-performance polyethylene / carbon fiber composite material, and the high activity, high stability and high molecular weight of a ketimine nickel catalyst indicate the electron donating ability of a catalyst substrate skeleton to a metal center. Methyl in 2, 6-diisopropylaniline provides electron donating capacity and provides steric hindrance, so that the three-dimensional steric hindrance of a metal center is influenced, the electron cloud density of the nickel metal center is increased, the chain transfer rate is slowed down, and the thermal stability of the catalyst is improved. The copolymerization of ethylene and 10-undecylenic acid methyl ester can be realized. Meanwhile, under the industrial temperature condition, polyethylene and carbon fibers are subjected to in-situ polymerization, so that the mechanical property of the composite material is improved. According to the invention, the conditions that the polyethylene has higher mechanical properties and the yield reaches the highest in a low-temperature environment are achieved, and the mechanical properties of the polyethylene are effectively improved by compounding with the carbon fibers at the industrial temperature.

This invention belongs to the field of rubber, specifically relating to a natural rubber material for tank road wheels and its preparation method. The natural rubber material for tank road wheels comprises the following raw materials: natural rubber, zinc 10-undecenoate, aluminum acrylate, methyl 4-vinylbenzoate, benzoyl peroxide, modified carbon black, modified short-cut carbon fibers, stearic acid, antioxidant, aluminum hydroxide, dibutyl phthalate, and sulfur. The rubber material prepared by this invention has a Shore A hardness of 58-60, a tensile strength as high as 37.54 MPa, and elongation at break and stress at 300% elongation can reach 547.26% and 9.65 MPa, respectively. It exhibits excellent comprehensive performance and has good application potential in materials such as tank road wheel tracks.

The invention relates to a bio-based thermoplastic long-chain polyamide elastomer and a preparation method and application thereof, and belongs to the technical field of vegetable oil functional polymer materials. Aiming at the defects of high hardness, complex preparation process and low bio-based content of the existing polyamide elastomer, the elastomer is prepared by taking long-chain binary acid containing a bio-based S28s diacid monomer and a S28so diacid monomer as raw materials, matching with short-chain diamine, diamine with side groups, polyether amine and a catalyst and carrying out melt polycondensation through a one-step method; wherein the S28s and the S28so are synthesized from 10-undecylenic acid and a corresponding sulfur-containing monomer through a sulfur-alkene click reaction, and the S28so is preferably matched with polyether amine with the number-average molecular weight of 400-900. The bio-based content of the elastomer is larger than or equal to 60%, the shore hardness is 25-40 D, the highest elastic recovery rate can reach 84.3%, pre-salification is not needed in the process, and the elastomer can be used for spinning preparation of elastic fibers, automobile engine sealing rings or high-end running shoe sole foaming materials and has the advantages of greenness, high performance and industrialization value.

A water-in-oil microemulsion comprising water, glycerine, benzoic acid, glyceryl mono undecylenate (Formula I) and N-capryloyl amino acids (Formula II) is disclosed. The microemulsion is biodegradable, cold-processable, prebiotic (towards skin microbiota) preservative system for personal care compositions. The microemulsion of the present invention allows the incorporation of safe organic acids and their effective delivery for broad antimicrobial spectrum for preservation of personal care and cosmetic products with broad range of pH range. Further, a process for preparing the microemulsion and a method of preservation of personal care compositions are disclosed.

The application discloses a citrus fruit preservation method based on 10-undecenoic acid. The postharvest citrus is soaked in a preservative containing 10-undecenoic acid as an active ingredient, and then dried. The application finds through experiments that 10-undecenoic acid can significantly delay the rotting of sand sugar orange fruits, significantly delay the consumption of nutrients of the citrus fruits, and maintain better quality of the fruits. Therefore, 10-undecenoic acid can be used for postharvest disease prevention and preservation of fruits and vegetables, especially citrus fruits.