327 results about "Dimer acid" patented technology

Provided is a flux that can suppress the generation of voids when an indium alloy sheet is used to perform a continuous reflow under different temperature conditions. The present invention employs a flux that contains a rosin ester, an organic acid (A), and a solvent (S). The organic acid (A) includes a dimer acid (A1) that demonstrates a weight reduction rate of not more than 1 mass % in a thermogravimetric analysis in which the dimer acid is heated up to 260° C. at a temperature rising rate of 10° C. / min. The solvent (S) includes a solvent (S1) that demonstrates the weight reduction rate of at least 99 mass % in a thermogravimetric analysis in which the solvent (S1) is heated up to 150° C. at a temperature rising rate of 6° C. / min.

The invention belongs to the technical field of preparation of hot melt adhesives, and particularly relates to a high-strength quick-curing bio-based hot melt adhesive and a preparation method thereof. The preparation method comprises the following steps: preparing a dimer acid polymer from dimer acid, sebacic acid, polyether amine, ethylenediamine, an antioxidant and a catalyst, and mixing the dimer acid polymer with a beta nucleating agent toughened polypropylene / SiO2 nano-composite and an organic borosiloxane polymer to obtain the high-strength quick-curing bio-based hot melt adhesive. The prepared hot melt adhesive has good mechanical property, viscosity and self-healing property.

The invention discloses bio-based polyester polyol based on a waste polyester depolymerization monomer and a preparation method of the bio-based polyester polyol. The method comprises the following steps: 1) carrying out alcoholysis on waste PET polyester in ethylene glycol by using a catalyst, and carrying out purification treatment such as filtration, rotary evaporation, centrifugal washing and the like to obtain an alcoholysis monomer bis (2-hydroxyethyl) terephthalate; 2) mixing bis (2-hydroxyethyl) terephthalate and bio-based dimer acid according to different alcohol acid molar ratios, and adding a catalyst for reaction to obtain rough bio-based polyester polyol; and 3) purifying the rough bio-based polyester polyol obtained in the step 2) to obtain the pure bio-based polyester polyol. According to the method, the defects that traditional petroleum-based polyester is poor in biocompatibility and biodegradability and the like are overcome, recycling of resources is achieved, and the prepared bio-based polyester polyol is uniform in structure, narrow in molecular weight and good in heat resistance.

The invention relates to the technical field of sealants, and discloses a full-bio-based polyurethane elastic sealant and a preparation method thereof, and the full-bio-based polyurethane elastic sealant is composed of a component A and a component B, the component A comprises bio-based polyol, a bio-based chain extender, a fumed silica thixotropic agent, a molecular sieve and a catalyst; the component B comprises bio-based isocyanate and a derivative thereof, a modified castor oil derivative, dimer acid polyol and a fumed silica thixotropic agent, the full-bio-based polyurethane two-component elastic sealant with high elastic elongation adopts full-bio-based raw materials, is environmentally friendly and renewable, reduces dependence on petroleum resources, and improves the elastic elongation rate by optimizing the components and the process. The elastic elongation is larger than or equal to 80%, excellent water resistance, weather resistance and mechanical performance are achieved, meanwhile, by adding the molecular sieve and the catalyst, the low moisture content and efficient curing are guaranteed, and the performance stability of the product is improved.

The invention relates to low-temperature lead-free formic acid solder paste and a preparation method and application thereof, and belongs to the technical field of welding materials. The low-temperature lead-free formic acid solder paste is prepared from the following raw materials in percentage by mass: 85-90% of alloy welding powder and 10-15% of scaling powder, the soldering flux comprises the following raw materials in parts by weight: 10-15 parts of an activating agent, 1-5 parts of a rheological agent, 20-30 parts of an organic solvent, 20-30 parts of a paste forming agent, 3-5 parts of a surfactant and 0.1-0.5 part of a corrosion inhibitor, the activating agent is a composition of hydrogenated dimer acid, glycollic acid and ethylenediaminetetraacetic acid, and the organic solvent is a composition of tetrahydrofurfuryl alcohol and cyclohexanol. The paste forming agent is polyethylene glycol. The solder paste is suitable for a low-temperature welding process at the temperature of 120-150 DEG C, welding energy consumption can be reduced, the residual rate after welding is low, follow-up cleaning is not needed, the production environment can be improved, and the production cost can be reduced.

The invention relates to the technical field of resin for printing ink, and discloses alcohol-soluble polyamide resin for printing ink and a preparation method and application thereof.The alcohol-soluble polyamide resin is prepared from, by weight, 78-83 parts of vegetable oil dimer acid, 3-5 parts of ethidene diamine, 6-7 parts of hexamethylenediamine, 5-8 parts of methyl pentamethylene diamine, 3-5 parts of propionic acid and 2-3 parts of acrylic acid through condensation reaction, and a defoaming agent (10-15) ml / ton. The alcohol-soluble polyamide resin for ink provided by the invention is non-toxic, free of pungent smell, non-corrosive, non-combustible, non-explosive, excellent in adhesive force, excellent in gloss, particularly strong in freezing resistance and gel resistance, excellent in alcohol solubility, stability and solvent release property, and can be used for preparing gravure plastic film surface printing ink.

The invention provides a dimer acid type polyamide hot melt adhesive and a preparation method thereof. The polyamide hot melt adhesive comprises the following components in parts by weight: 50-90 parts of dimer acid, 5-40 parts of dicarboxylic acid, 45-130 parts of diamine, 1-10 parts of a catalyst and 5-20 parts of an antioxidant. The polyamide hot melt adhesive disclosed by the invention has relatively high softening point and melt viscosity, the adhesive property of the polyamide hot melt adhesive can be improved, and the polyamide hot melt adhesive has relatively high tensile strength and elongation at break, so that the polyamide hot melt adhesive is excellent in mechanical property and relatively wide in application range.

The invention discloses a waterborne coating for corrosion prevention of neodymium-iron-boron magnets and a preparation method and application of the waterborne coating, and the waterborne coating comprises, by weight, 40-70 parts of waterborne dimer acid modified epoxy emulsion; 2-10 parts of a coalescing agent; 0.5-4 parts of a nonionic aqueous dispersant; 2-5 parts of a phenolic aldehyde amine curing agent; 10 to 20 parts of filler; 10-20 parts of a coloring agent and the balance of water. The water-based paint disclosed by the invention can resist high-pressure water vapor erosion and normal-temperature environmental corrosion, the corrosion resistance and adhesive force of the water-based paint are equivalent to those of the existing oil paint, and the water-based paint is free of rusting and bubbling after being tested for 120 hours by PCT. The water-based dimer acid modified epoxy emulsion is used as a main material, and water is used as a diluent in the use process, so that the emission of VOC (volatile organic compounds) in the production process is greatly reduced, the environment friendliness of the production is improved, and in addition, the production cost is relatively low. Meanwhile, by adjusting curing conditions, the hardness, SST, PCT and cohesive strength of the coating can be adjusted, and the requirements of different customers are met.

The invention discloses a low-rank coal composite flotation reagent and a preparation method and application thereof, and belongs to the technical field of coal flotation of mineral processing. The agent specifically comprises a composite collecting agent and a composite foaming agent, and the composite collecting agent comprises kerosene, n-dodecane, oleic acid, dimer acid, sodium stearate, terpilenol, diethyl phthalate, alkylphenol ethoxylates, span-80, trioctyl phosphate and 2-ethylhexanol. The composite foaming agent is prepared from the following components: terpilenol, terpenic oil, sec-octyl alcohol and sodium alpha-olefin sulfonate. Compared with a traditional single flotation reagent combination, the composite flotation reagent has a remarkable effect in fine coal flotation, and particularly when coal with the particle size smaller than 0.5 mm is treated, the flotation efficiency, the clean coal yield and the combustible body recovery rate can be effectively improved. More importantly, the medicament is stable at normal temperature, the layering phenomenon is avoided, the long-term effectiveness is ensured, and the medicament has extremely high industrial application potential.

The present invention discloses a polyamide composition comprising 45 wt % to 95 wt % of a polyamide polymer and 5 wt % to 55 wt % of a modifier, wherein the modifier comprises C 18‑44 Dimer acid or C 18‑44 A diamine or a combination thereof. The number average molecular weight of the polyamide polymer is less than 30,000 g / mol. The polyamide composition exhibits chemical resistance as measured by exposure to HCl (10%) at 58° C. for 14 days resulting in a weight loss of less than 3.0 wt %; and a moisture absorption of less than about 2.0 wt % water at 95% RH. A method of preparing the polyamide composition is also disclosed.

The invention discloses a multifunctional polyamide type solid propellant slurry viscosity reduction auxiliary agent and a preparation method, and belongs to the field of viscosity reduction auxiliary agents, dimer acid and a polyamine compound are subjected to a condensation reaction at 135-150 DEG C, and a polyamide prepolymer is generated in obtained reaction liquid; and cooling the reaction liquid, adding a solvent, uniformly mixing, adding a vinyl monomer at 45-60 DEG C, reacting, and finally cooling to room temperature to obtain the multifunctional polyamide type solid propellant slurry viscosity-reducing auxiliary agent. According to the present invention, the use amounts of the dimer acid, the polyamine compound and the vinyl monomer are respectively 47-67%, 18-44% and 9-25% by mass, such that the fluidity and the viscosity in the propellant slurry can be effectively improved, and the mechanical strength of the cured product can be improved;

To provide a thermosetting maleimide resin composition which has low melt viscosity during heating, has excellent flexibility of the cured film in its cured product, has low dielectric constant and dielectric loss tangent, has high glass transition temperature, has a low coefficient of thermal expansion, and has excellent long-term heat resistance and moisture resistance.SOLUTION: A thermosetting maleimide resin composition contains (A) a bismaleimide compound represented by the following formula (1) (in the formula (1), A represents a tetravalent organic group including a cyclic structure, B represents a divalent hydrocarbon group derived from a dimer acid skeleton, Q represents a divalent group having a fluorene skeleton or an indene skeleton, W is B or Q, n is 1 to 100, and m is 1 to 100, (B) a thermosetting resin having one or more maleimide group reactive functional groups selected from an alkenyl group, a maleimide group, an epoxy group, a cyanate group, a hydroxyl group, an acid anhydride group, a (meth)acrylic group and a thiol group, and (C) a reaction accelerator.SELECTED DRAWING: None

The invention relates to the field of PE (polyethylene) protective films, and discloses a PE protective film based on reclaimed materials and a preparation method of the PE protective film. A PE protective film based on reclaimed materials is composed of a PE base material layer and a pressure-sensitive adhesive layer, and the PE base material layer is prepared from the following raw materials in parts by weight: 50-70 parts of a pretreated reclaimed PE material, 15-25 parts of PE resin, 10-20 parts of a flexibilizer, 3-5.5 parts of a filler, 3-6 parts of a compatilizer, 2-4 parts of a slipping agent, 1.5-3 parts of an antistatic agent and 1-2 parts of an antioxidant; preparation of a pretreated recycled PE material: crushing, pickling, mixing with a pretreating agent, melting, extruding and pelletizing; the pretreating agent is prepared from an isobutylene maleic anhydride copolymer, an ethylene-acrylate-methyl glycidyl ester terpolymer and dimer acid polyester polyol. The PE protective film is good in fitting stability, small molecule precipitation is not prone to being generated, oily residues are not prone to being generated during fitting, and the PE protective film is suitable for protection of precise electronic products.

The invention provides a preparation method of UV-curable water-based bio-based polyurethane resin, which comprises the following steps: putting bio-based dimer acid, glycidyl ester, a catalyst and a polymerization inhibitor into a reaction container, and reacting at 100-120 DEG C for 2-4 hours to obtain bio-based dihydric alcohol; s2, mixing the bio-based dihydric alcohol obtained in the step S1 with a solvent, stirring for 0.5-1 hour at 65-75 DEG C, then adding diisocyanate and a catalyst, continuously stirring for 2-5 hours, measuring the NCO value, and obtaining a bio-based polyurethane resin prepolymer when the NCO value is less than or equal to 0.5%; and (S2) adding binary anhydride and a catalyst into the bio-based polyurethane resin prepolymer obtained in the step (S2), and continuously stirring for 1-2 hours to obtain the bio-based polyurethane resin. The invention also provides a dispersion of the UV-curable aqueous bio-based polyurethane resin prepared by the method and a preparation method of the dispersion.

The invention provides hydrolysis-resistant hydrophobic polyurea with water resistance and corrosion resistance as well as a preparation method and application thereof.The hydrolysis-resistant hydrophobic polyurea is based on fluorine-containing alkyl hydroxyl silane modified dimer acid polyester, and the structural formula of fluorine-containing alkyl hydroxyl silane is shown as the following formula I: # imgabs0 #. The hydrolysis-resistant hydrophobic polyurea which is low in cost and has water resistance and corrosion resistance can effectively improve the water resistance, corrosion resistance and the like due to the fact that the coating is compact, has hydrophobic performance and isolates permeation of moisture and oxygen. Particularly, when the hydrolysis-resistant hydrophobic polyurea is subjected to process implementation, the hydrolysis-resistant hydrophobic polyurea has excellent waterproof and anti-corrosion processes.

The present invention addresses the problem of providing: a novel substance which is capable of solving the problems of conventional bismaleimides each having a dimer acid skeleton; a high-concentration composition of the substance; a curable composition which contains the composition; an adhesive agent or a sealing material; a cured article obtained by curing the composition or the like; and a semiconductor device or an electronic component which includes the cured article.　Provided are: a dimer acid-modified N-substituted (meth)acrylamide; a high-concentration composition of the dimer acid-modified N-substituted (meth)acrylamide; a curable composition which contains the composition; an adhesive agent or a sealing material; a cured article obtained by curing the composition or the like; and a semiconductor device or an electronic component which includes the cured article.

The present invention addresses the problem of providing a solid cosmetic for lips having further improved transfer resistance (the effect of reducing secondary adhesion). The present invention relates to a solid cosmetic for lips, which is characterized by containing: (A) a coloring material that has been surface-treated with a treatment agent comprising an amino acid or a metal soap; (B) 15-50 mass% of at least one member selected from the group consisting of (b1) a copolymer containing a dimer acid ester and (b2) a dimer acid ester; (C) 20-70 mass% of a non-volatile hydrocarbon oil (c1) that separates when mixed with (B) at 25 DEG C or (c2) a phenyl-modified silicone that separates when mixed with (B) at 25 DEG C; and (D) a wax.

The application belongs to the technical field of materials, and discloses a special aluminum powder dispersing agent for aluminum foil rolling oil, which is composed of the following components and in the following proportions: base oil: 10-20 parts; surfactant: oleic acid diethanol amide: 40-60 parts; fatty amine polyoxyethylene ether: 10-30 parts; lubricating cleaner: dimer acid: 5-15 parts; and guerbet alcohol: 10-20 parts. The aluminum powder dispersing agent adopts oleic acid diethanol amide and T13 surfactant which have sufficient dispersion effect on aluminum powder, so as to reduce the pollution caused by aluminum powder accumulation after rolling of the aluminum foil; through introduction of the dimer acid and the guerbet alcohol, the lubricating performance of the rolling oil is improved, the oil amount on the surface of the aluminum foil after rolling is reduced, the surface cleanliness of the aluminum foil is improved, and thus the surface leakage coating condition of the aluminum foil is improved.

The present disclosure provides compositions and methods of inhibiting corrosion, including under-deposit corrosion, of a metal surface in contact with a medium. A method may include adding a composition to the metal surface. A composition may include a first reaction product, a second reaction product, a trimer acid, a solvent, and a viscosifier dimer acid. The first reaction product may be produced by reacting a first amine with a first carboxylic acid and a dimer acid. The second reaction product may be produced by reacting a second amine with a second carboxylic acid.

The application discloses a green closed-loop recyclable bio-based double-dynamic crosslinking epoxy resin and a preparation method, a recycling method and an application thereof, and the preparation method comprises the following steps: under the condition of no catalyst, curing reaction is performed on a bio-based epoxy compound, a dimer acid and an amine-based compound to obtain the green closed-loop recyclable bio-based double-dynamic crosslinking epoxy resin. The application effectively solves the problems of recycling difficulty and low recycling efficiency of traditional epoxy resin materials, and provides a new idea for structural performance design of a novel epoxy resin material.

The invention provides a biodegradable wrapping film and a preparation method and application thereof, the biodegradable wrapping film comprises a biodegradable resin base material and dimer acid polyol, and the biodegradable resin base material comprises a copolymer of butylene adipate and butylene terephthalate; according to the biodegradable wrapping film, the dimer acid polyol is added into the material of the biodegradable wrapping film, and the advantages of good viscosity and good compatibility with biodegradable resin of the dimer acid polyol are utilized, so that the obtained biodegradable wrapping film has excellent viscosity, is biodegradable and is very friendly to human bodies and the environment.

The invention belongs to the technical field of angiographic contrast agents, and particularly relates to an angiographic contrast agent for corpses and a preparation method of the angiographic contrast agent. The angiographic contrast agent for the corpse is prepared from the following components in parts by mass: 20 to 35 parts of iodine-containing polymer, 30 to 50 parts of iodo-benzene ring compound, 90 to 150 parts of glycerol triacetate, 30 to 40 parts of dimer acid and 600 to 800 parts of liquid paraffin, the iodine-containing polymer is obtained by copolymerizing (methyl) C4-6 alkyl acrylate, polyethylene glycol diacrylate and an iodine-containing monomer, and the iodine-containing monomer is selected from at least one of 3-iodine-ethyl acrylate, 3-iodine-methyl acrylate and (methyl) iodobenzyl acrylate. The blood vessel contrast agent disclosed by the invention can realize an excellent blood vessel contrast effect on a corpse, can also obtain a relatively ideal contrast effect for a corpse with relatively long death time, and provides powerful support for the corpse work.

A polyimide composition, a resin film, a laminate, a cover film, a resin-attached copper foil, a metal-clad laminate, and a circuit board, the polyimide composition containing: (A) a thermoplastic resin containing a structural unit derived from a diamine component; the diamine component contains, as a main component, 40 mol% or more of a dimer diamine in which two terminal carboxylic acid groups of a dimer acid are substituted with primary aminomethyl groups or amino groups, relative to all diamine components; and (B) one or more substances selected from the group consisting of aromatic condensed phosphate esters, silica particles, and liquid crystalline polymer fillers.

A resin composition, a resin film, a laminate, a cover film, a resin-attached copper foil, a metal-clad laminate, and a circuit board, the resin composition containing: (A) a thermoplastic resin containing a structural unit derived from a diamine component; the diamine component contains, as a main component, 40 mol% or more of a dimer diamine in which two terminal carboxylic acid groups of a dimer acid are substituted with primary aminomethyl groups or amino groups, relative to all diamine components; and (B) one or more substances selected from the group consisting of aromatic condensed phosphate esters, silica particles, and liquid crystalline polymer fillers.

The invention belongs to the technical field of melt adhesives, and particularly relates to polycarbonate dimer acid dihydric alcohol and a preparation method and application thereof. The number of carbonate bonds at the two ends of a molecular chain of the polycarbonate dimer acid dihydric alcohol is larger than the number of carbonate bonds in the middle of the molecular chain of the polycarbonate dimer acid dihydric alcohol; the invention relates to a castor oil dimer acid-based adhesive which comprises the following raw materials in parts by mass: 90-100 parts of castor oil dimer acid; 50 to 60 parts of a compound polycarbonate monomer; 1-2 parts of a supported catalyst; and 0.08 to 0.25 part of an antioxidant A. The polycarbonate dimer acid diol disclosed by the invention can be widely applied to synthesis of a moisture-cured polyurethane hot melt adhesive. Compared with the traditional polyester polyol, the polycarbonate dimer acid diol disclosed by the invention can obviously improve the hydrolysis resistance and flexibility of the hot melt adhesive, so that the polycarbonate dimer acid diol shows more excellent performance in various application fields.

An epoxy resin-based adhesive composition used for a vehicle includes a bisphenol A epoxy resin, a polyalkylene glycol diglycidyl ether, a dimer acid diglycidyl ester, and a compound having a phenol group.

The invention belongs to the technical field of preparation of hot melt adhesives, and particularly relates to a quick-curing bio-based hot melt adhesive and a preparation method thereof. Cyclosiloxane, mercapto acid and polyether amine are used as raw materials, siloxane modified polyether amine is obtained through ring opening polymerization, mercapto-alkene click reaction and amidation reaction, then siloxane modified polyether amine is mixed with dimer acid, sebacic acid, an antioxidant, a catalyst, organic borosiloxane and stearic acid, and the quick-curing bio-based hot melt adhesive is obtained. The prepared hot melt adhesive has good low temperature resistance, viscosity and self-healing property, and the dimer acid is used as a main bio-based raw material, so that the hot melt adhesive has good biodegradability and is environmentally friendly and sustainable.

Embodiments of a formulation comprises at least 90 wt.% ethylene-based polymer and dimer acid, wherein the dimer acid is a polymer processing aid used to reduce melt fracture during extrusion.

The invention discloses an imidazolyl polyamide epoxy resin curing agent and a preparation method thereof. The imidazolyl polyamide epoxy resin curing agent is prepared from 5-30% of imidazole substances, 5-30% of unsaturated binary acid (or acid anhydride), 0-60% of dimer acid and 25-55% of polyamine substances. Performance detection shows that the product is good in compatibility with epoxy resin, high in gloss after being cured, good in acid resistance and salt fog resistance and suitable for anticorrosive paint, and a very good technical effect is achieved.

This invention provides a laminate with excellent weather resistance. The coating agent of this invention comprises a dimer acid di(meth)acrylate resin, a polyfunctional (meth)acrylate compound, a photopolymerization initiator, and a light stabilizer represented by formula (1). Furthermore, the laminate of this invention comprises: a coating layer formed on a substrate layer using the coating agent of this invention; a substrate layer formed using a thermoplastic polyurethane; and an adhesive layer formed on the side of the substrate layer opposite to the side on which the coating layer is formed using at least one resin selected from acrylic, urethane, rubber, and silicone resins.