50results about How to "Low storage stability" patented technology

In order to provide a dispersion wherein the dispersed state of a fluorine-based resin is uniformly controlled, a polyimide precursor solution composition using this dispersion, an adhesive composition, a polyimide and polyimide film obtained from this polyimide precursor solution composition and having excellent heat resistance, excellent mechanical characteristics, excellent electrical characteristics such as lower dielectric constant and lower dielectric loss tangent, and excellent processability, a method for producing the polyimide, a method for producing the polyimide film, and a circuit board and coverlay film using the polyimide film, the present invention provides: a polyimide precursor solution composition containing a fluorine-based resin, which is characterized by containing a polyimide precursor solution and a nonaqueous dispersion of a fluorine-based resin containing a micropowder of a fluorine-based resin and a butyral resin or a fluorine-based additive containing at least a fluorine-containing group and a lipophilic group; and an adhesive composition.

The invention relates to a scratch resistant PU (Poly Urethane) floor varnish and a preparation method thereof. The scratch resistant PU floor varnish is prepared from a first ingredient and a second ingredient at weight ratio of (0.8-1.2):(0.8-1.2), wherein the first ingredient is prepared from the following raw materials in parts by weight: 30-50 parts of hydroxy acrylic resin, 20-40 parts of high-hydroxyl number alkyd resin, 0.1-0.5 part of leveling agent, 0.1-0.5 part of antifoaming agent, 1-10 parts of epoxy resin, and 20-40 parts of composite environment-friendly solvent, and the second ingredient is prepared from the following raw materials in parts by weight: 10-40 parts of TDI-TMP, 10-30 parts of HDI (Hexamethylene Diisocyanate) tripolymer, 10-20 parts of moisture curing agent, and 30-50 parts of butyl acetate. By adopting the scratch resistant PU floor varnish disclosed by the invention, the scratch resistance of the varnish surface on the floor is obviously improved, while the other performances of transparency, storage stability and the like are rarely influenced; simultaneously the varnish film is uniform, smooth, and good in adhesion force; the number of the varnish coating layers can be reduced, therefore the cost is reduced; in addition, fracture is unlikely to form to influence the beautiful appearance of the floor.

The invention discloses flour having low glycemic index and a making method thereof. The flour is made from, by weight, wheat flour 35%-45%, soybean flour 35%-45%, buckwheat powder 1%-1.5%, oat powder1%-1.5%, isolated soy protein powder 4%-4.5%, dietary fibers 4%-4.5%, vitamins 0.5%-1.5% and mineral substance 0.5%-1.5%. The flour is based on the low-GI-value (a GI value is below 55) coarse cereal powder, uses the added protein, dietary fibers, vitamins, mineral substance and the like as nutritional materials, has good eating taste and is a high-fiber-content and low-fat healthy food. The flour can delay postprandial blood sugar rise to some degree and is suitable for high-glucose people, patients with diabetes and populations needing low-glycemic-index foods.

The present invention discloses a special wood modifier and a preparation method thereof. The special wood modifier comprises the following components, by weight, 500-800 parts of formaldehyde, 20 parts of urea, 200-400 parts of a phenol compound, 150-300 parts of organosilicon, 5-30 parts of an alkali catalyst, and 10-50 parts of an additive, wherein the formaldehyde is an aqueous solution with a mass concentration of 35-37%. According to the present invention, the special wood modifier mainly comprises a low molecular weight modified phenol formaldehyde resin, has characteristics of low viscosity, good water solubility, good storage stability, simple synthesis process, and low formaldehyde emission, and is applicable for modifications of various tree species, especially for modifications of fast-growing wood so as to provide high economic values; and density, size stability, hardness, water resistance and corrosion resistance of a base material can be substantially improved after the wood is treated by the special wood modifier.

The invention belongs to the field of chemical synthesis and in particular relates to a high-flame-retardance low-temperature bicomponent filling material for coal mines and a preparation method thereof. The filling material comprises a component A and a component B, wherein when the filling material is used, the component A and the component B are mixed according to the volume ratio of 1:(1.0-1.5) and are foamed; the component A is a composition with a silicate aqueous solution as the main body; and the component B is a composition with polyisocyanate as the main body. The filling material and the preparation method have the beneficial effects that the filling material is convenient to transport and has low viscosity, fluidity and storage stability; the raw materials are free from pollution and corrosion and the filling material does not contain irritating volatile solvents; the filling material has high foaming ratio and has low internal temperature during foaming; a foaming body has good flame retardance and certain toughness; the preparation method is simple and practicable, has low requirements on production and construction personnel, is short in production cycle, is free from equipment corrosion, is free from three wastes in the whole process and does not affect the environment.

The invention opened a process to make the polyimide resin plate which can resist the high temperature using the aromatic dianhydride, polyalkyl-diamine and capped agent as the material. The process is first to get the resin liquor from the above materials, then the liquor is moulded to the resin forming. The product can be used to make the resin moulding material and the resin compound material which can be used for the aviation, cosmonautics, precision machinery and petrochemical engineering.

A modified asphalt emulsion and a preparation method thereof. The modified asphalt emulsion comprises 50-72 wt% of modified asphalt, 0.05-5 wt% of an emulsifier compound, 0.02-2 wt% of a cosurfactant and 25-45 wt% of water. The emulsifier compound is composed of a lignin emulsifier, an amphiphilic surfactant and a non-ionic surfactant. The preparation method of the modified asphalt emulsion comprises steps of: preparing the modified asphalt; and mixing the modified asphalt with an emulsifier aqueous solution containing the lignin emulsifier, the amphiphilic surfactant, the non-ionic surfactant, the cosurfactant and water, and dispersing and cooling. The modified asphalt emulsion provided by the invention has advantages of simple preparation method, low cost, JTG F40-2004 modified asphalt emulsion technology requirements reached, low sieve residue, good storage stability, high ductility of evaporation residue, high needle penetration, good high and low temperature performance; and a mixture prepared from the modified asphalt emulsion has good demulsification cohesion and improved road performance.

The invention relates to the technical field of polyurethane, in particular to a high-flame-retardancy polyurethane gas hole sealing material for a coal mine and a preparation method of the high-flame-retardancy polyurethane gas hole sealing material. The hole sealing material is prepared from a component A and a component B, wherein the component A comprises polyhydric alcohol, water, an adjuvant, a flame retardant and a physical foaming agent; the component B is polymethylene polyphenyl isocyanate. Due to the formula design, a high-flame-retardancy polyurethane material which is high in flame retardancy, stable in effect and applied to gas hole sealing is obtained by compounding the polyhydric alcohol, the adjuvant and the flame retardant, and has the advantages of normal temperature reaction, adjustable reaction speed, adjustable foaming rate and high flame retardancy; foam produced by the high-flame-retardancy polyurethane material is high in flame retardancy, high in bonding strength to a coal and rock mass, high in shear strength and toughness after being bonded and impact-resistant; relevant raw materials are low in odor and cannot generate any toxic gas, and the use and environmental protection requirements of the gas hole sealing material can be completely met.

The present application relates to a syrup composition comprising: gum, pectin or a combination thereof; and allulose, and food containing the composition.

The invention discloses permeable emulsified asphalt concrete and a preparation method thereof. The permeable emulsified asphalt concrete is prepared from the following components in parts by mass: 50-70 parts of coarse aggregate, 20-25 parts of cement, 5-10 parts of modified emulsified asphalt, 0-5 parts of a cementing agent and 5-10 parts of water, wherein the modified emulsified asphalt is prepared from the following components in parts by mass: 40-60 parts of asphalt, 20-30 parts of anionic emulsion, 20-25 parts of rubber powder and 0-5 parts of an anti-stripping agent. The prepared modified emulsified asphalt is suitable for low-temperature storage, and the prepared permeable emulsified asphalt concrete has the advantages of high concrete strength, high-temperature rutting resistance and wear resistance.

The invention discloses a wood modifying agent and a preparation method thereof, and belongs to the technical field of wood modifying agents. The wood modifying agent is prepared by the following rawmaterials in parts by weight: 5-15 parts of formaldehyde, 10-20 parts of methyl acrylate, 4-8 parts of alkyl polyglucoside, 8-12 parts of gallic acid, 2-6 parts of zinc chloride, 2-4 parts of sodium dodecyl benzene sulfonate, 20-40 parts of urea, 300-400 parts of water, and 1-5 parts of emulsifying agent. The invention further discloses the preparation method of the wood modifying agent. The woodmodifying agent is low in viscosity, excellent in water solubility, excellent in storage stability, low in formaldehyde release quantity, suitable for modification of various tree types and higher ineconomical value.