319results about How to "High functionality" patented technology

The invention relates to an epoxy resin composition as well as a prepreg and a copper-foil-clad laminated board prepared by using the same. The epoxy resin composition comprises the following essential components: (A) epoxy resin containing a naphthol structure, (B) an active ester serving as a curing agent, and (C) a curing accelerant. Because epoxy resin at least contains the naphthol structure in the molecular structure, the epoxy resin composition provided by the invention has higher functionality degree and high glass transition temperature; at the same time, the naphthol group structure is introduced to the molecular structure, thus the cured product has low water absorptivity and low expansion coefficient; due to the active ester serving as the curing agent, the advantages that the a polar group is not generated during the reaction between the active ester and epoxy, thus the dielectric properties are excellent and moisture and heat resistance are good are fully exerted; and in addition, because of the epoxy resin containing the special naphthol structure, the hydroscopicity of the resin cured product is further reduced and the dielectric loss value of the cured product is lowered. The prepreg and the copper-foil-clad laminated board provided by the invention have excellent dielectric properties, moisture and heat resistance and high glass transition temperature.

The invention provides a method for making fermented minced or cubed meat by utilizing a fermenting agent. The method comprises the steps of minced or cubed meat raw material pretreatment, preserving, fermenting, storing and the like, the above raw material selects cold meat or fresh meat, and a strain comprises one or more of lactic acid bacteria, Debaryomyces hansenii, Micrococcus Kristinae, Micrococcus varians and Staphylococcus xylosus. A fermented product obtained in the invention has the characteristics of fine texture, elasticity, rich and pure fragrance, possessing of the sour fragrance specially possessed by fermented meat products, good mouthfeel and unique flavor, and also has the advantages of high nutrition value, high safety, eating convenience, easy preservation, probiotic effect and the like.

The invention discloses a UV curing resin, a preparation method thereof and the application of the UV curing resin in a UV curing colored paint. The preparation method comprises the following steps: mixing polyalcohol, polyacid and fatty acid at first, adding a reflow solvent to prepare alkyd resin, then mixing an ester compound and isophorone diisocyanate, adding a polymerization inhibitor and a catalyst, reacting to obtain acrylic acid modified polyurethane, reacting the acrylic acid modified polyurethane and the alkyd resin for 2-3 h at the temperature of 60-100 DEG C to obtain the YV curing resin, and performing reaction of the UV curing resin, an acrylic acid alkyl oxidation polyol ester active diluent, a pigment, thermoplastic acrylic resin, a photoinitiator, an alkyd resin drier, a dispersant, a foam agent and a flattening agent to obtain the UV curing colored paint. The invention solves the problems that as a pigment in a conventional ultraviolet light curing colored paint system shields ultraviolet light, the paint system can not be completely cured, and as the UV curing resin can not well moisten the pigment, and the coating adhesive force is poor.

The present invention discloses a macromolecule adhesive, particularly relates to an adhesive for a flexible package compound film and a preparation method thereof. The adhesive for a compound film includes a hydroxy polyester polymer component (A) and an isocyanate end capping prepolymer component (B), the preparation method is that firstly a polyester is synthesized by using a diatomic alcohol and a dibasic acid, a polyester is then synthesized by using a polyatomic alcohol and a dibasic acid, the polyester molecular mass is adjusted by selection and dosage proportion of the diatomic alcohol, the polyatomic alcohol and the dibasic acid chemical structure, so as to prepare the component (A); the diatomic alcohol reacts with a different isocyanate, and compose a isocyanate end capping prepolymer together with a biuret polymer of the isocyanate so as to prepare the component (B); the component (A) and the component (B) are mixed with each other at a certain proportionality to prepare a polyurethane adhesive for a double-component solvent-free type compound film. When using the adhesive, the coating amount of the adhesive is small, and a compound speed may arrive 300 m / min.

The invention provides a transparent hardened film for in-mold decoration. The transparent hardened film comprises a base film and a hardened coating layer coated thereon. The base film is a PET (polyethylene glycol terephthalate) film, and the thickness of the hardened coating layer ranges from 3 micrometers to 5 micrometers. The hardened coating layer comprises, by weight, 15-30 parts of high-functionality polyurethane acrylate prepolymer, 5-20 parts of low-functionality polyurethane acrylate prepolymer, 5-10 parts of organic-inorganic hybrid materials, 5-10 parts of photoinitiators, 0.01-0.1 part of flattening agents and 30-64 parts of organic solvent which are subjects to ultraviolet curing. The transparent hardened film has the advantages of high hardness, excellent stretch forming performance, good wear resistance, high transparency and low haze.

The present invention relates to an epoxy resin composition, and a prepreg and a copper foil-clad laminated sheet prepared by using the epoxy resin composition. The epoxy resin composition comprises the following components: (A) an epoxy resin containing two or more than two epoxy groups, (B) an active ester curing agent, and (C) a phosphate compound. According to the epoxy resin composition of the present invention, the epoxy resin having a specific molecular structure is adopted, and functionality is high, such that the resulting cured product has characteristics of high glass transition temperature and low moisture absorption; the active ester is adopted as a curing agent, such that the advantage of the active ester is completely provided, wherein the advantage comprises that no polar group is produced when the active ester reacts with the epoxy resin so as to provide excellent dielectric property and good moisture heat resistance; with application of the active ester as the curing agent, water absorption of the phosphorous-containing component can be further improved, a water absorption rate and a dielectric loss value of the cured resin material can be reduced, and purposes of no halogen, fire retardation and good moisture heat resistance can be concurrently achieved; and the prepreg and the copper foil-clad laminated sheet in the present invention have characteristics of no halogen, fire retardation, excellent dielectric property and excellent moisture heat resistance.

The invention relates to a thermosetting epoxy resin composition which comprises epoxy resin, an active ester curing agent, and polyphosphonate or / and phosphonate-carbonate copolymer. The prepreg prepared by the epoxy resin composition and a copper foil coated laminated board have excellent dielectric property and heat and humidity resistance, and the flame retardance can reach level UL94V-0.

The invention relates to modified solid epoxy resin with high glass transition temperature and high tenacity. The modified solid epoxy resin is prepared from the following components in parts by weight: 100 parts of epoxy resin, 50-120 parts of a modifier, 0.05-5 parts of a catalyst, and 25-100 parts of a curing agent. The invention further provides a preparation method of the modified solid epoxy resin with high glass transition temperature and high tenacity. The modified solid epoxy resin has the excellent properties that the glass transition temperature is 128-178 DEG C, the cathodic cathodic disbonding radius is smaller than or equal to 10 mm (1.5 V, 92-98 DEG C, 28d), the modified solid epoxy resin can pass a bend test of 3 degrees at minus 30 DEG C as no crack generates, the softening point is 96-115 DEG C, the epoxide number is 0.19-0.275 mol / 100g, and the functionality degree is 2.6, so that the modified solid epoxy resin can be applied to the fields of petroleum and gas long-distance pipelines, urbane groundwater, gas pipe network pipelines, transportation industry (automobiles and ships), oceanographic engineering, corrosion prevention in bridges and construction reinforcing steel bar, and the like in which the use temperature is higher than 95 DEG C.

The invention discloses a 180-degree straight welded polyurethane wire enamel and a preparation method thereof. The wire enamel is prepared from a polyester polyol resin, a polyurethane blocked resin, a solvent and a first catalyst; the polyester polyol resin is prepared from such synthesis raw materials as a polyol, a polyatomic acid ester, a polyanhydride and a second catalyst. The 180-degree straight welded polyurethane wire enamel has excellent heat shock resistance, cut-through resistance and soldering properties, and low dielectric loss.