1030results about How to "Low acid value" patented technology

The invention provides a preparation method of annular phosphonate or annular organic phosphate flame retardant. The steps are that (1) trimethylolpropane and trimethyl phosphate or triethyl phosphate are taken as the material, and react to synthesize into midbody under the condition of catalyzer; (2) phosphonate or organic phosphate is added into the midbody and is heated, and then the product of annular phosphonate or annular organic phosphate flame retardant can be obtained. The phosphite ester is selected from trimethyl phosphate and triethyl phosphate. The phosphonate is selected from dimethyl-phosphine and diethyl ethyl phosphine. The organic phosphate is selected from trimethyl phosphate, triethyl phosphate, phosphate propyl, tributyl phosphate and tricresyl aromatic ester. The invention overcomes the shortcomings of the prior art, the new preparation method of annular phosphonate or annular organic phosphate flame retardant is environment-friendly, solution is not needed, and the operation is simple. The termination product has excellent color and luster, low acid value and excellent viscosity; and does not need additional decoloration.

The related UV solidifying paint for metal coated surface protection comprises: 10-30% epoxy acrylate and 5~20% urethane acrylate both as active oligomer, 10-30% composite adhesion reinforced resin as the mixture of thermalplastic acrylic resin with AA monomer modified by H3PO4 as one of synthetic monomer and fiber resin, 30~65% diluent, 5~20% active diluent, 1~10% light initiator, and 0.1~1% auxiliary agent. This invention solves the adhesion problem of UV paint on smooth metal surface very well, and contains other index up to protective and decorative requests.

The present invention is solid catalysis process of preparing biodiesel oil continuously with high acid value material, and belongs to the field of grease chemistry and regenerable energy source technology. The process includes following four steps: material pre-treating, reaction, methanol rectifying recovery and vacuum rectification of fatty acid methyl ester; and features the high acid value material, such as acidified oil, waste edible oil, etc. The present invention has the advantages of low material cost, high activity and easy separation of the solid catalyst, high esterification efficiency, high product purity, high yield, less waste, no pollution, etc.

The invention discloses a mono-component aqueous metal baking paint and a preparation method thereof. The mono-component aqueous metal baking paint consists of the following components by weight: 40 to 57 percent of tap water, 28 to 34 percent of aqueous acrylic modified polyester resin, 7 to 8.5 percent of amino resin, 1.12 to 1.36 percent of amine modifier, 0.1 to 0.3 percent of wetting dispersing agent A, 0.1 to 0.3 percent of wetting dispersing agent B, 0.01 to 0.1 percent of defoaming agent, 0.5 to 1.2 percent of thickening agent, and 0.2 to 0.6 percent of levelling agent. The mono-component aqueous metal baking paint uses water as a solvent without adding an alcohol / ether cosolvent so that environmental protection is excellent; because of mono-component, the construction is simple and convenient, and the performance is stable; and a paint film is plumpy, the luster is high, the mechanical property is excellent, and the adhesive force is good. The mono-component aqueous metal baking paint is applicable to metal surface corrosion protection and decoration, and can be used as a finishing paint, a priming paint or a coating varnish; and when used for bottom surface integral coating, the mono-component aqueous metal baking paint still has excellent surface effect and protective action.

The invention discloses a manufacturing method of an epoxy-ester resin aqueous dispersion and the anti-corrosion primer on the basis of the epoxy-ester resin aqueous dispersion, characterized in that the aqueous dispersion is a self-drying core-shell structured aqueous dispersion emulsion with the epoxy resin as the core and the reactive non-transfer surfactant as the shell; the anti-corrosion primer has the epoxy-ester resin aqueous dispersion emulsion with acid value of 2 to 10 mg KOH / g, solid content ranging from 40 percent to 60 percent as the basic component. The construction performance, self-drying property and the paint film mechanical strength of the produced waterborne anti-corrosion primer are all comparable to the solvent type epoxy resin coating.

The invention relates to a hydroxy acrylic resin dispersoid and a waterborne coating prepared from the same. Resin is obtained by two-step polymerization, amine is added to perform neutralization, andwater is added to disperse the resin to obtain the stably stored hydroxy acrylic resin dispersoid with a core-shell structure. Two steps include: first, preparing a hydrophobic portion by free radical solution polymerization; second, preparing a hydrophilic portion by free radical solution polymerization. The hydroxy acrylic resin dispersoid has the core-shell layered structure and has the advantages of high solid content, low viscosity and the like. The two-component waterborne acrylic coating prepared by the method can combine the advantages of an acrylic coating and a polyurethane coating,has excellent physical performance, chemical performance and appearance performance, has the advantages of high paint film crosslinking density and hardness, good toughness and chemical medium resistance, high drying speed, capability of drying at room temperature and the like, and is widely applied to priming paint, finishing paint and priming and finishing combined paint of various engineeringmachinery and automobiles.

The invention discloses a preparation method of butane diacid dimethyl ester. The preparation process comprises the following steps of: (1) the rate of raw materials and a catalyst and dosage quality rate thereof is: butane diacid : industrial ethanol : absolute ethyl alcohol : the catalyst is equal to 1 : 0.8 to 1.1 : 0.1 to 0 : 0.01 to 0.02; 1) putting butane diacid, industrial ethyl alcohol of 20 percent of total amount and the catalyst into an esterification kettle and increasing temperature to 120 DEG C; 2) inputting residual industrial ethanol continuously for 8 hours to 9 hours, maintaining the temperature of the kettle at 115 DEG C to 120 DEG C and the temperature of the top of distillation device less than 105 DEG C; 4) sampling to detect acid value and inputting absolute ethyl alcohol when the acid value is 40mgKOH / g to 48mgKOH / g; 5) sampling to detect acid value after an hour and stopping heating when the acid value is 10mgKOH / g to 15mgKOH / g; 6) reducing the temperature to 80 DEG C after ethyl alcohol is withdrawn from the kettle by opening vacuum; 7) separating the catalyst from the materials cooled to 80 DEG C and putting the catalyst into an alkaline washing kettle; 8) inputting alkali solution of proper amount and mixing for 20 minutes to 40 minutes under temperature of 60 DEG C to 70 DEG C; 9) placing stilly for layering and emitting the lower water layer; 10) adding crude product after the alkaline washing into a rectification kettle, raising the temperature to 150 DEG C to 170 DEG C and dehydrating; 11) opening vacuum and collecting distillate of 160 DEG C to 190 DEG C which is the final product.

The invention relates to a quenching oil regeneration method. The quenching oil regeneration method mainly solves the technical problem that the existing regeneration method needs complicated additional treatment units, and has complicated processes and a high cost. The method comprises the processes of 1, sedimentation or filtration, 2, acid value reduction, 3, adsorption, 4, dehydration, and 5, function adjustment, wherein at least one used acid value-reducing agent is selected from oxides, hydroxides and carbonates of alkali metals and alkaline-earth metals and the weight of the at least one used acid value-reducing agent is 0.5-3.0wt% of the weight of quenching oil to be treated. The quenching oil regeneration method solves the existing problem and can be used for industrial production of the regeneration of quenching oil.

The invention discloses a making method of biological diesel through trench oil, which comprises the following steps: A. adding 97-99.8% trench oil and 0.2-3% solid acid catalyst of porous carrier into autoclave; controlling reacting temperature between 95 and 130 deg.c; aerating gas-phase carbinol; stirring 1-4h; esterifying; separating solid acid catalyst; B. adding 70-80% liquid, 15-25% carbinol and 1-5% solid alkaline catalyst into autoclave; controlling the reacting temperature between 50 and 65 deg.c; stirring under normal pressure for 0.5-2h; proceeding ester exchange reaction; C. stewing liquid or centrifuging; adopting upper layer as product and lower layer as glycerine, solid alkaline catalyst and carbinol.