5 results about "Pimaric acid" patented technology

The invention discloses a water-based photoresponse type rosin-based aggregation-induced emission amphiphilic molecule as well as a preparation method and application thereof. The molecular structural formula of the water-based light response type rosin-based AIE amphiphilic molecule is shown in the specification, or n ranges from 15 to 30. According to the water-based light-responsive rosin-based AIE amphiphilic molecule, a tetraphenyl ethylene or cyanostilbene fluorophore is introduced into the anhydride part of maleopimaric acid through an imidization reaction, and groups such as sodium carboxylate, amino acid sodium or polyethylene glycol are introduced into the carboxylic acid position to prepare the water-based light-responsive rosin-based AIE amphiphilic molecule. The solid of the molecule has blue fluorescence emission, and can be used for dyes or solid anti-counterfeiting materials. A photoresponsive AIE aqueous solution is prepared by using the amphiphilic molecule alone or compounding the amphiphilic molecule with dodecyl polyoxyethylene ether, and the photoresponsive AIE aqueous solution can be used for water-based anti-counterfeiting ink, cell imaging or 4-nitrophenol detection and the like.

The application discloses a kind of full biological base benzoxazine monomer modified rosin-based epoxy resin and preparation method thereof, comprising: vanillin, decanediamine, polyformaldehyde are reacted to obtain full biological base benzoxazine monomer;Full biological base benzoxazine monomer and 1,8-are added to solvent and reacted to obtain the Schiff base with amino;The Schiff base with amino and propylene pimaric acid diglycidyl ester are mixed uniformly, then poured into mould, then heated and cured to obtain full biological base benzoxazine monomer modified rosin-based epoxy resin.The full biological base benzoxazine monomer modified rosin-based epoxy resin obtained by the application has strong mechanical properties and good thermal stability, and also has excellent self-repairing, shape memory, recyclability, hydrophobicity and dielectric properties.

The application discloses a rosin-based CO2 / N2 response type surfactant with switchable two ends, a preparation method and application thereof, and the rosin-based CO2 / N2 response type surfactant with switchable two ends is abbreviated as NMPAN, and the molecular structure is as follows: the NMPAN is prepared by twice imidization reactions of male pimaric acid and N, N-dimethylethylenediamine under different conditions. The surfactant has good response performance to CO2 / N2 at room temperature, and compared with the reported rosin-based CO2 / N2 response type surfactant, the response speed is fast and the condition is mild. The application also discloses the Pickering emulsification performance of the surfactant, and after the surfactant is changed into a cationic surfactant by passing CO2, the surfactant can be used in cooperation with nano silicon oxide to stabilize Pickering emulsion, the situation that the emulsion cannot be stabilized by the nano particles or the surfactant alone is changed, and the use amount of the surfactant and the nano particles is significantly reduced; the prepared limonene essential oil Pickering emulsion can be stable for more than 6 months at room temperature, and the embedding and slow release of the limonene essential oil are realized.

A method for manufacturing a chloroprene polymer composition, the method including: a polymerization step of polymerizing chloroprene in the presence of at least one rosin acid component selected from the group consisting of a rosin acid and a rosin acid salt to obtain a chloroprene polymer composition containing a chloroprene polymer, in which in the rosin acid component, a mass ratio B1 / A1 of a total amount B1 of abietic acid, neoabietic acid, palustric acid, levopimaric acid, and salts thereof with respect to a total amount A1 of dehydroabietic acid, pimaric acid, isopimaric acid, dihydroabietic acid, and salts thereof is 0.10 to 3.00, and a toluene insoluble content of the chloroprene polymer is 50% by mass or more.

The present invention relates to a composition for the prevention or treatment of rheumatoid arthritis, comprising, as an active ingredient, a supercritical extract of Acanthopanax sessiliflorus Harms. In the present invention, it was confirmed that, upon administration of the supercritical extract of Acanthopanax sessiliflorus Harms to a rheumatoid arthritis animal model, pain induced by rheumatoid arthritis was reduced and cartilage damage was suppressed. Also, a decrease in the infiltration of immune cells in cartilage tissue was confirmed, and it was confirmed that the expression of Col2a1, Sox9, and Aggrecan, which are cartilage anabolic factors whose expression is reduced by inflammatory cytokines and inflammatory factors, was increased, and the expression of Mmp3, Mmp10, Mmp13, and Adamts5, which are cartilage catabolic factors, was reduced. It was also confirmed that pimaric acid and kaurenoic acid, which are useful components of the supercritical extract of Acanthopanax sessiliflorus Harms, protected chondrocytes and suppressed the differentiation of Th17 cells, which are pathogenic cells in rheumatoid arthritis.