171 results about "Dehydroabietic acid" patented technology

The invention discloses a rosinyl bis-quaternary ammonium surfactant, the general molecular formula of which is as follows. In the formula, R is a rosinyl ricyclic diterpene structure, X is Br or I, and n is larger than or equal to 1 and smaller than or equal to 10. The invention also discloses a method for preparing the compound: firstly, dehydroabietic acid or disproportionated rosin is adopted to prepare rosinyl tertiary amine, and then the rosinyl tertiary amine and saturated dihalide are prepared into the rosinyl bis-quaternary ammonium surfactant through quaternization. The synthesis of the rosinyl tertiary amine comprises the following steps: the dehydroabietic acid or the disproportionated rosin is converted into active acyl chloride intermediate, and then the acyl chloride intermediate and N,N-dimethyl ethanolamine are prepared into the rosinyl tertiary amine in the presence of the triethylamine which is used as the acid-binding agent. The rosinyl tertiary amine and the saturated dihalide are reacted in the solvent isopropyl alcohol, and then vacuum drying is performed after filtration. The prepared surface active agent has good surface activity performance; the raw material is inexpensive and easy to obtain, and can be biodegraded; the synthetic method is assisted with microwave, the reaction time is short, and the product purity is high.

The invention is suitable for the technical field of pesticide solvents, provides a plant source green and environment-friendly solvent and simultaneously provides a method for preparing the plant source green and environment-friendly solvent from destructive distillation turpentine. The plant source green and environment-friendly solvent comprises the following components in percentage by mass: 10 to 40 percent of pinene, 10 to 40 percent of D-limonene, 5 to 15 percent of longifolene, 5 to 15 percent of camphene, 3 to 15 percent of dehydroabietic acid, 1 to 10 percent of pinane and 0 to 2 percent of antioxygen. The preparation method comprises the following steps: (1) pulverizing and dehydrating the turpentine; (2) performing dry distillation and collecting lysate; (3) washing the turpentine by alkali liquor, standing the washed turpentine for fractional distillation; (4) performing dehydration; and (5) adding the antioxygen for uniform dissolution to prepare the plant source green and environment-friendly solvent. A raw material adopted by the solvent is the turpentine of pine trees, and is low in cost; the preparation method has simple process, environmental protection and lessenergy consumption; decomposition components give priority to safe and environment-friendly components, such as a terpene compound and the like and can be controlled; and the plant source green and environment-friendly solvent has low production cost, safety and environmental protection, and is beneficial for people.

The invention relates to an oximido dehydroabietic acid compound and a synthesis method thereof. The compound has structural formulas which are shown in the specification. The compound provided by the invention has a dehydroabietic acid framework structure; and the synthesis method is an efficient and concise preparation method for preparing 12-oximido dehydroabietic acid and 14-oximido dehydroabietic acid by introducing aldehyde groups at the sites 12 and 14 and oximating the aldehyde groups.

The present invention provides a hot melt adhesive composition comprising (A) an ethylene copolymer obtained by copolymerizing ethylene and α-olefin using a single-site catalyst and (B) a rosin ester, in a hydrolyzate of which a dehydroabietic acid content is 30 wt % or less and an abietic acid content is 10 wt % or less, and in a methylated product of the hydrolyzate of which a content of components having a molecular weight of 320 is equal to or greater than 10 wt % of a total amount of components having a molecular weight of 314 to 320.

A dehydroabietic acid polymer including a skeleton represented by following formula (A) as a repeating unit:

wherein, in formula (A), L represents a divalent organic group.

The invention relates to a method of improving dispersity and interface compatibility of graphene in epoxy resin. The method comprises the steps of performing stirring and ultrasonic dispersion on and dissolving graphite oxide and a disproportionated rosin purification product dehydroabietic acid in a cosolvent of graphite oxide and dehydroabietic acid at any ratio, evaporating a graphite oxide/dehydroabietic acid solution to remove the cosolvent to form graphite oxide/dehydroabietic acid powder, putting the graphite oxide/dehydroabietic acid powder in a graphite oxide reducer for reaction to form graphene/dehydroabietic acid powder, allowing the graphene/dehydroabietic acid powder to react with polyamine to form graphene/rosinyl polyamine, and mixing and curing graphene/rosinyl polyamine and the epoxy resin to form a uniform dispersion graphene/epoxy resin composite. The design method is novel; no surfactant is required to be used in a preparation process; the graphene is dispersed in the epoxy resin without a solvent; and the method is easy to operate and suitable for mass production.

The invention discloses a dehydroabietylamide ethyl sulfonate surfactant, a preparation method and application of the surfactant in tertiary oil recovery. In the method, dehydroabietic acid is taken as a raw material and reacts with base after acylation and sulfonation in sequence to form salt. Therefore, a new variety-dehydroabietylamide ethyl sulfonate surfactant is added in the big family of the surfactant; and the surfactant can be used in tertiary oil recovery, wherein, interfacial tension of crude oil in Daqing No. 2 Oil Production Plant can be lowered to 10-2-10-4mN/m orders of magnitude in an alkali-free binary system formula.

The invention discloses a rosin-based polyamine conductive epoxy hardener and a preparation method and application thereof. The preparation method includes: enabling dehydroabietic acid which is a disproportionated rosin purification product to react with polyamine, and depressurizing for distilling to remove redundant polyamine to obtain slightly-red transparent liquid rosin-based polyamine; mixing the rosin-based polyamine with a carbonaceous conductive filler to obtain the rosin-based polyamine conductive epoxy hardener. Pi-Pi interaction between rosin-based polyamine and carbonaceous conductive particles like grapheme is utilized creatively to uniformly disperse the carbonaceous conductive particles in rosin-based polyamine, so that sedimentation is avoided; the rosin-based polyamine conductive epoxy hardener prepared by the method has extremely high amine value and conductivity, and can substantially lower percolation threshold value of conductive adhesives when being applied in preparing epoxy resin conductive adhesives.

The invention relates to the field of polymer modification, and in particular to a modified polyethyleneimine and application thereof in the preparation of a gene transfection vector reagent. According to the present invention, hydrophobic rosin acid or dehydroabietic acid is grafted onto polyethyleneimine to obtain the modified polyethyleneimine. The hydrophobic group of the modified polyethyleneimine forms a dense hydrophobic core with strong hydrophobicity due to the intermolecular forces in water, hydrophilic polyethyleneimine forms hydrophilic shell, thereby forming a nano micelles with shell-core structure, and nanoparticles with small particle size formed after DNA binding. The composite nanoparticles in smaller size gains tighter structure, so that composite nanoparticles are easier to pass through the cell membrane structure of a lipid bilayer, and the efficiency of transfection is improved. The modified polyethyleneimine can be applied to the preparation of gene transfection vectors and has the characteristics of high biological safety, high transfection efficiency, and low cost.

The invention provides a capsaicin [(12-acryloyl-oxy)-dehydroabietate]-acrylic acid copolymer of which the molecular structural formula is disclosed as Formula (I). Natural organic compounds (capsaicin and dehydroabietic acid) with the functions of fungus proofing, sterilization and marine organism avoidance and antifouling paint base materials are directly subjected to chemical synthesis to obtain the capsaicin [(12-acryloyl-oxy)-dehydroabietate]-acrylic acid copolymer. The capsaicin [(12-acryloyl-oxy)-dehydroabietate]-acrylic acid copolymer is free of cuprous oxide and other international forbidden toxic materials. The novel marine antifouling paint, which satisfies the national environmental requirements, can effectively prevent the marine organisms from damaging the ship bottom within two years, can protect the ship from the influence of the cruise speed, saves the fuel, has the characteristics of long acting time, no toxicity and environment friendliness, and obtains better antifouling effects by utilizing the synergistic actions of the dehydroabietic acid and capsaicin. In the Formula (I), m is a natural number ranging from 1000 to 5000.

The invention relates to a synthesis method of dehydroabietic-acid-based B ring-fused-thiazole-thiocarbamide compounds. The method comprises the following steps: preparing methyl dehydroabietate from dehydroabietic acid, oxidizing in an acetic acid-acetic anhydride mixed solution with CrO3 to obtain methyl 7-carbonyl dehydroabietate, carrying out reaction on the methyl 7-carbonyl dehydroabietate and bromine in acetic acid to generate methyl 6-bromo-7-carbonyldehydroabietate, carrying out reaction on the methyl 6-bromo-7-carbonyldehydroabietate and thiocarbamide in acetic acid to obtain a dehydroabietic-acid-based B ring-fused-thiazole-amine intermediate, and carrying out reaction on the dehydroabietic-acid-based B ring-fused-thiazole-amine intermediate and a series of isorhodanates to obtain the dehydroabietic-acid-based B ring-fused-thiazole-thiocarbamide compounds. The invention implements synthesis of the dehydroabietic-acid-based B ring-fused-thiazole-thiocarbamide compounds for the first time. The antibacterial activity test indicates that the dehydroabietic-acid-based B ring-fused-thiazole-thiocarbamide compounds have certain antibacterial activities and widen the application range of dehydroabietic acid. The dehydroabietic acid is a component of the natural product rosin, so the preparation method is simple and is low in cost.

Rosin for brazing flux in the present invention contains methyl dehydroabietic acid and other resin acid except for the methyl dehydroabietic acid, relative to the total of the rosin, the rosin contains 20% to 70% by mass of methyl dehydroabietic acid. Preferredly, relative to the total of the rosin, the rosin contains more than 99% by mass of methyl dehydroabietic acid and other resin acid. In addition, the brazing flux according to the present invention contains the rosin for brazing flux.

The invention discloses an application of dehydroabietic acid based arylamine as a hole transport material. The compound is constructed based on an aromatic ring. A structural formula of the compound is as Formula (I) as shown in the specification, wherein R1 is one of -H, methoxyl and methyl, and R2 is one of phenyl, quinolyl, naphthyl, anthryl, xenyl, and aryl with electron donating substituents or electron-withdrawing substituents. The hole transport material has very good thermostability, and very high hole transport efficiency, and a thin film can maintain an amorphous state for a long time after vacuum film forming. The molecule material can be applied to an organic electroluminescence device.

The invention discloses a disproportionated rosinyl anion/non-ion composite surfactant and a preparation method thereof. According to the invention, the non-ion is rosin polyethyleneglycol diester and the anion is dehydrogenated rosin polyethyleneglycol diester sulfonate. The invention also discloses the preparation method of the composite surfactant. According to the preparation method, a one-pot method is adopted, about 50% of dehydroabietic acid is contained in dehydrogenated rosin and the benzene ring of dehydroabietic acid can be subjected to sulfonation reaction. The preparation method comprises the steps of esterifying the dehydrogenated rosin and polyethylene glycol to form sulfonation reaction; and sulfonating the benzene ring in the diester by using a sulfonating agent, and salifying, so as to obtain the disproportionated rosinyl anion/non-ion composite surfactant by utilizing the one-pot method. The critical micelle concentration of the prepared surfactant is 0.08-0.1mmol/L and the range of the surface tension is 38.9-42.1mN/m. The surfactant containing anion and non-ion in the product is a novel functional composite green surfactant.

The invention relates to a pesticide adjuvant, in particular to a wetting agent for pesticide preparations, a method for preparing the wetting agent and application of the wetting agent to the pesticide preparations. The method for preparing the wetting agent for the pesticide preparations includes steps of adding salicylic acid and potassium hydroxide into a reactor, then adding triethylene tetramine into the reactor drop by drop to obtain intermediate monoamide, adding dehydroabietic acid into the reactor and carrying out a series of reaction to obtain intermediate asymmetric bisamides; adding the intermediate asymmetric bisamides and butanone into the reactor, adding propane suhone into the reactor drop by drop, carrying out suction filtration, repeatedly washing substances in the reactor by the aid of butanone, re-crystallizing the substances, neutralizing the substances by the aid of ethanol solution of alkali, separating white solid from the substances, carrying out suction filtration and drying the white solid under the vacuum condition to obtain the wetting agent for the pesticide preparations. The wetting agent, the method and the application have the advantages that the wetting agent for the pesticide preparations is of an asymmetric structure with the bisamides and bis-sulfonate and is excellent in surface activity, compound property and wetting property, and the pesticide absorption rate can be increased.

The invention discloses a free radical-polymerizable rosin-modified benzocyclobutene monomer, a preparation method thereof, and a benzocyclobutene resin prepared from the monomer. The molecular structural formula of the free radical-polymerizable rosin-modified benzocyclobutene monomer is shown in the description. The preparation method of the free radical-polymerizable rosin-modified benzocyclobutene monomer is characterized in that dehydroabietic acid used as a raw material sequentially undergoes bromination, Suzuki coupling and esterification reactions to prepare the free radical-polymerizable rosin-modified benzocyclobutene monomer. The free radical-polymerizable rosin-modified benzocyclobutene monomer can be subjected to free radical polymerization and ring-opening polymerization, thefunctional monomer synthesized through multiple reactions is used to prepare a polymer material, and the thermal stability, the water resistance and the dielectric property of the resin prepared fromthe free radical-polymerizable rosin-modified benzocyclobutene monomer are improved; and the preparation method enhances the reprocessing utilization of rosin, improves the use values of the rosin, and reduces the use of petrochemical resources.

The invention discloses a dehydroabietic acid-based 2,4-diarylbenzimidazole fluorescent probe for ferric ions and mercury ions, and a preparation method and application thereof. The preparation methodcomprises the following steps: subjecting dehydroabietic acid to acylating chlorination and methyl esterification to synthesize methyl dehydroabietate; subjecting a product obtained after reacting methyl dehydroabietate with NBS to double nitrification so as to synthesize methyl 12-bromo-13,14-dinitrodehydroabietate; reacting methyl 12-bromo-13,14-dinitrodehydroabietate with 3,4,5-trimethoxyphenylboronic acid to generate methyl 12-(3,4,5-trimethoxyphenyl)-13,14-dinitrodehydroabietate; performing a Fe/HCl reduction reaction to generate methyl 12-(3,4,5-trimethoxyphenyl)-13,14-diaminodehydroabietate; and condensing the methyl 12-(3,4,5-trimethoxyphenyl)-13,14-diaminodehydroabietate with 2-hydroxy-1-naphthaldehyde to obtain a desired compound. The compound can selectively react with Fe<3+> and Hg<2+> to generate a complex, blue fluorescence is quenched after the complex is formed, and the compound can be used as the fluorescent probe for detecting the concentration of Fe<3+> or Hg <2+>.

Disclosed is a flux composition for a lead-free solder, which is characterized by containing components derived from rosins. The components derived from rosins include a (meth)acrylic acid-modified rosin, dehydroabietic acid and dihydroabietic acid; and the dehydroabietic acid content is 7-65% by weight and the dihydroabietic acid content is 3-57% by weight with respect to the total amount of the components derived from rosins. Also disclosed is a lead-free solder composition which contains the flux composition and a lead-free solder alloy.

The invention discloses a method for preparing a sulfonated dehydroabietic acid. The method is characterized by comprising the following steps: extracting a dehydroabietic acid from disproportionated rosin by using hexane, petroleum ether or acetone; and sulfonating, refining by ethyl acetate, acetonitrile and butanone to obtain the sulfonated dehydroabietic acid. The method is simple to operate, and the sulfonated dehydroabietic acid is high in purity and can be applicable to industrial production.

The invention discloses a preparation method of dehydroabietic acid, comprising the following steps of: adding rosin into a solid acid catalyst and an ionic liquid as shown in the formula (I) to form a reaction system, performing a reflux condensation reaction for 1-10h at 80-150 DEG C, adding toluene into the reaction system for extraction after the reaction, taking a supernatant and concentrating, and letting a concentrate undergo column chromatography to obtain dehydroabietic acid. The solid acid catalyst and the ionic liquid as shown in the formula (I) are reused; according to the solid acid catalyst, ZrO2 and gamma-Al2O3 are used as carriers and Pt is used as an active component, wherein the mass ratio of the carrier ZrO2 to gamma-Al2O3 is 1:1 and load capacity of the active component is 0.1-1% according to the weight of the carriers. The solid acid and the ionic liquid are used to prepare dehydroabietic acid. The technology is easy to operate, conversion rate is high, ''three wastes (waste gas,waste water and industrial residue)'' are less, post-treatment is convenient, and the solid acid and the ionic liquid are repeatedly usable. The preparation method provided by the invention is an economical, practical, green and environmentally friendly technology.