36results about How to "Suppresses viscosity rise" patented technology

A method of manufacturing golf balls composed of a core and a cover of one or more layer that encloses the core, at least one cover layer being made of a thermoplastic polyurethane composition characterized by including at least 90 wt % of a thermoplastic polyurethane obtained by a polyurethane-forming reaction of an organic diisocyanate compound with a long-chain polyol and a chain extender, which thermoplastic polyurethane composition cover layer has an inherent viscosity in a DMF solvent of larger than 1.5 dl / g and an inherent viscosity in a 0.05 mol / L n-butylamine-containing DMF solution of larger than 0.5 dl / g, the golf ball manufacturing method being characterized by: conditioning the thermoplastic polyurethane to a pre-processing moisture content of 500 ppm or less, then injection molding the moisture-conditioned thermoplastic polyurethane to form the thermoplastic polyurethane composition cover layer. Golf balls produced by this method have a high rebound and excellent spin characteristics and scuff resistance, are recyclable in a molding operation, and have excellent manufacturability.

Fine dry silica particles are produced by combustion by using a burner of a multiple-pipe structure, feeding a mixed gas of a gas of a siloxane compound without containing halogen in the molecules thereof and an oxygen gas at a ratio of 0.3 to 1.5 into the center pipe of a burner, and feeding a combustible gas into the first annular pipe on the outer side of the center pipe of the burner. The fine dry silica particles has a BET specific surface area of 20 to 55 m2 / g, and wherein the water suspension containing the fine silica particles at a concentration of 1.5% by weight has an optical absorbance τ for the light of a wavelength of 700 nm satisfying the following formula (1):τ≦240S−1.4−0.07  (1)wherein S is the BET specific surface area (m2 / g) of the fine dry silica particles.The fine dry silica particles do not almost contain coarse particles or aggregated particles, have a sharpe grain size distribution, excellently disperse in the resins, suppress a rise in the viscosity when highly filled, and impart sufficiently large strength to the resin compound.

Fine dry silica particles are produced by combustion by using a burner of a multiple-pipe structure, feeding a mixed gas of a gas of a siloxane compound without containing halogen in the molecules thereof and an oxygen gas at a ratio of 0.3 to 1.5 into the center pipe of a burner, and feeding a combustible gas into the first annular pipe on the outer side of the center pipe of the burner. The fine dry silica particles has a BET specific surface area of 20 to 55 m2 / g, and wherein the water suspension containing the fine silica particles at a concentration of 1.5% by weight has an optical absorbance τ for the light of a wavelength of 700 nm satisfying the following formula (1):τ≦240S−1.4−0.07  (1)wherein S is the BET specific surface area (m2 / g) of the fine dry silica particles.The fine dry silica particles do not almost contain coarse particles or aggregated particles, have a sharpe grain size distribution, excellently disperse in the resins, suppress a rise in the viscosity when highly filled, and impart sufficiently large strength to the resin compound.

A method for manufacturing an inkjet recording medium including at least inline-mixing an ink receiving layer forming liquid containing inorganic fine particles and a water-soluble binder and a mordant mixture solution containing a basic poly aluminum hydroxide compound and a cationic polymer to form a coating liquid; and applying the coating liquid onto a support to form a coated layer and an inkjet recording medium manufactured by the manufacturing method.

A liquid ejection head including: a head main body including: a cavity unit including a passage forming base plate forming a liquid passage from a common liquid chamber to a nozzle opening via a pressure chamber; and a pressure generating source generating a change of pressure of liquid in the pressure chamber to eject the liquid in the pressure chamber as a liquid droplet from the nozzle opening; and a case member to which the head main body is attached and which includes: a first member provided with a first atmosphere opening passage; and a second member laminated on the first member and provided with a second atmosphere opening passage, wherein the first and second atmosphere opening passages communicate with each other under the laminated state and are opened to atmosphere.

The invention provides a detergent composition which contains components (A), (B), (C), (D) and (E), wherein (A) is C12-C22 fatty acids or salts thereof, (B) is an anionic surfactant with carboxylic acid or salts thereof on the hydrophilic group other than the component (A), (C) is an amphoteric surfactant, (D) is polyalcohol with the IOB value of 0.8-4 or a mixture of polyalcohol with the IOB value of 0.8-4 and C3 below monobasic alcohol, and (E) is water. On the basis of reduced mass of acid, the sum of the component (A) and component (B) ((A)+(B)) is 35-60 wt%, the mass ratio of the component (B) to the sum of the component (A) and component (B) ((B) / [(A)+(B)]) is 0.06-0.65%, the content of the component (C) is 1.5-15 wt%, and the content of the component (D) is 6-18 wt%.

An object of the present invention is to provide a pigment dispersion capable of suppressing an increase in the viscosity after preparation of the pigment dispersion irrespective of the type of phthalocyanine pigment, and suppressing a decrease in the contrast of a coating film after preparing a coloring composition containing the same, and a coloring composition containing the same. The pigment dispersion containing at least one selected from the group consisting of phthalimide and a derivative thereof represented by the following formula (1), a phthalocyanine pigment, a dispersant, and a solvent. (In the formula (1), R1 to R4 are hydrogen atoms or halogen atoms, Q is (i) a hydrogen atom, and (ii) an alkyl group having 1 to 4 carbon atoms of the substituent X bonded to a terminal carbon atom or (iii) an aryl group which may have a substituent Y bonded to a carbon atom of an aromatic ring; the substituent X is an acetyl group or a carboxyl group a phosphate group or a sulfo group; thesubstituent Y is a methyl group, an acetyl group, a carboxyl group, a phosphoric acid group or a sulfo group.)

A method of manufacturing golf balls composed of a core and a cover of one or more layer that encloses the core, at least one cover layer being made of a thermoplastic polyurethane composition characterized by including at least 90 wt % of a thermoplastic polyurethane obtained by a polyurethane-forming reaction of an organic diisocyanate compound with a long-chain polyol and a chain extender, which thermoplastic polyurethane composition cover layer has an inherent viscosity in a DMF solvent of larger than 1.5 dl / g and an inherent viscosity in a 0.05 mol / L n-butylamine-containing DMF solution of larger than 0.5 dl / g, the golf ball manufacturing method being characterized by: conditioning the thermoplastic polyurethane to a pre-processing moisture content of 500 ppm or less, then injection molding the moisture-conditioned thermoplastic polyurethane to form the thermoplastic polyurethane composition cover layer. Golf balls produced by this method have a high rebound and excellent spin characteristics and scuff resistance, are recyclable in a molding operation, and have excellent manufacturability.

Fine dry silica particles are produced by combustion by using a burner of a multiple-pipe structure, feeding a mixed gas of a gas of a siloxane compound without containing halogen in the molecules thereof and an oxygen gas at a ratio of 0.3 to 1.5 into the center pipe of a burner, and feeding a combustible gas into the first annular pipe on the outer side of the center pipe of the burner. The fine dry silica particles has a BET specific surface area of 20 to 55 m 2 / g, and wherein the water suspension containing the fine silica particles at a concentration of 1.5% by weight has an optical absorbance for the light of a wavelength of 700 nm satisfying the following formula (1): wherein S is the BET specific surface area (m 2 / g) of the fine dry silica particles. The fine dry silica particles do not almost contain coarse particles or aggregated particles, have a sharpe grain size distribution, excellently disperse in the resins, suppress a rise in the viscosity when highly filled, and impart sufficiently large strength to the resin compound.

The invention provides a sheet-shaped epoxy resin composition for encapsulating electronic components and an electronic component device using the same, wherein the storage stability is good, and the gas output during the solidification can be reduced. The composition is the sheet-shaped epoxy resin composition for encapsulating the electronic components, and the thickness of the sheet is in a range from 150(mu)m to 1mm. the epoxy resin composition comprises the following (A) to (D) composition, and the following (E)composition. (A) is the epoxy resin, (B) is the phenolic resin, (C) is the elastomer, (D) is the inorganic filler. The (E) is at least one of the following 5-Nitro-isophthalic acid and the complex formed by the imidazoliniumcompounds represented by the following formula(1), or the 5-Nitro-isophthalic acid and the complex formed by the imidazoliniumcompounds represented by the following formula(2), or the 5-Nitro-isophthalic acid and the complex formed by the imidazoliniumcompounds represented by the following formula(3).

A liquid ejection head including: a head main body including: a cavity unit including a passage forming base plate forming a liquid passage from a common liquid chamber to a nozzle opening via a pressure chamber; and a pressure generating source generating a change of pressure of liquid in the pressure chamber to eject the liquid in the pressure chamber as a liquid droplet from the nozzle opening; and a case member to which the head main body is attached and which includes: a first member provided with a first atmosphere opening passage; and a second member laminated on the first member and provided with a second atmosphere opening passage, wherein the first and second atmosphere opening passages communicate with each other under the laminated state and are opened to atmosphere.

The invention provides a fuel oil transfer device capable of preventing fuel oil taken out from a fuel oil storage tank from being affected by atmospheric temperature and being in a viscosity increasing state, to prevent deterioration of transfer efficiency. The fuel oil transfer device comprises: a fuel oil storage tank (2) arranged on a position to receive heat of atmosphere; a fuel oil precipitation tank (3) for heating the fuel oil sucked from the fuel oil storage tank (2), and a fuel oil daily tank (4) for temporarily storing the heated fuel oil in the fuel oil storage tank (2) so that heated fuel oil return to the fuel oil storage tank (2) and the fuel oil can be circulated. The fuel oil storage tank (2) has a suction pipe (2C) having a bell mouth (2B) opening toward the bottom in the deepest position in a longitudinal direction; and a steam heating pipe (30) disposed in pairs near the bell mouth (2B).

Disclosed is a method for producing an ore slurry that can suppress a rise in the viscosity of the ore slurry and consequently prevent a failure in transporting the slurry, and also to provide a metal refining method utilizing such a slurry producing method. The present invention includes: a pulverizing / classifying step of pulverizing raw material ores and classifying the resulting ores at a predetermined classifying point so that oversized ore particles are removed so as to obtain a coarse ore slurry composed of undersized ore particles; a grain size measuring step of measuring the grain size of the resulting coarse ore slurry; and an ore slurry condensing step of loading the coarse ore slurry to a solid-liquid separation device and separating and removing moisture contained in the coarse ore slurry therefrom so as to condense ore components.

The invention provides an alkali developing-type photosensitive resin composition and a dry film as well as a cured material and a printed circuit board. The alkali developing-type photosensitive resin composition does not contain coarse grains, contains few substances harmful to human bodies, has excellent storage stability and can be used for inhibiting the worsening of operating environments. The alkali developing-type photosensitive resin composition is characterized by containing a carboxyl-containing resin (A), a photopolymerization initiator (B), a compound (C) with more than two olefinic unsaturated groups in one molecule, and dibasic acid ester (D).

The present invention relates to a polyimide precursor composition, a method for preparing a polyimide, and polyimide. The polyimide precursor composition contains polyamic acid and a monomeric compound. The polyamic acid is prepared from a monomer mixture by a first reaction, wherein the monomer mixture comprises a diamine compound and a dianhydride compound. The aforementioned monomeric compound has two carboxyl groups and two ester groups. The prepared polyimide precursor composition can be further reacted to obtain a polyimide having good mechanical properties and film properties.

Provided is a water-soluble working fluid for a fixed-abrasive wire saw, the water-soluble working fluid comprising: (C) a carboxylic acid; (D) a compound which shows basicity on dissolution in water; and (E) water, wherein an electrical conductivity at 25°C of the water-soluble working fluid is 300 µS / cm or more and 3000 µS / cm or less; a pH at 25°C of the water-soluble working fluid is 5 or more and 10 or less; and a viscosity of a simulated fluid formed by adding 10 mass % of a silicon powder having an average particle size of 1.5 µm to the water-soluble working fluid and stirring a resultant mixture is less than 30 mPa·s at 25°C.

The present invention relates to a process for producing a dispersion of white fine particles from which a white ink that is capable of exhibiting excellent hiding power, rub fastness and water resistance even when printed on a low-water absorbing printing medium can be obtained by incorporating the dispersion of the white fine particles into the ink, and a water-based ink for ink-jet printing which contains the white fine particles. The present invention provides [1] a process for producing a dispersion of white fine particles, including step 1 of mixing titanium oxide and a polymer dispersant at a pH value that is not less than an acid dissociation exponent (pKa) of at least a part of an acid component of the polymer dispersant to thereby obtain a titanium oxide dispersion, in which an isoelectric point (A) of the titanium oxide and the acid dissociation exponent (pKa) (B) of the polymer dispersant satisfy a relationship represented by the formula: A−B≥0, the polymer dispersant contains a constitutional unit derived from a hydrophobic monomer, and a volume median particle size (D50) of particles in the titanium oxide dispersion is from 150 to 500 nm; and step 2 of adding a polymerizable monomer to the titanium oxide dispersion obtained in the step 1 to subject the polymerizable monomer to polymerization reaction, thereby obtaining the dispersion of the white fine particles, and [2] a water-based ink for ink-jet printing which contains the white fine particles obtained above.

To provide a copper powder exhibiting a high electric conductivity suitable for a metallic filler used in an electrically conductive paste, a resin for electromagnetic shielding, an antistatic coating, etc., and having excellent uniform dispersibility required for forming a paste so as to inhibit an increase in viscosity due to flocculation. This copper powder 1 forms a branch shape having a plurality of branches through the conglomeration of copper particles 2. The copper particles 2 have a spheroidal shape, with diameters ranging from 0.2 -0.5 [mu]m, inclusive, and lengths ranging from 0.5 -2.0 [mu]m, inclusive. The average particle diameter (D50) of the copper powder 1 in which the spheroidal copper particles 2 have conglomerated is 5.0 -20 [mu]m. By mixing this tree-branch-shaped copper powder 1 into a resin, it is possible to produce an electrically conductive paste, etc., exhibiting excellent electric conductivity, for example.

The invention provides a detergent composition which contains components (A), (B), (C), (D) and (E), wherein (A) is C12-C22 fatty acids or salts thereof, (B) is an anionic surfactant with carboxylic acid or salts thereof on the hydrophilic group other than the component (A), (C) is a nonionic surfactant in a branched chain structure, (D) is polyalcohol of which the IOB value is 0.8-4, and (E) is water. On the basis of reduced mass of acid, the sum of the component (A) and component (B) ((A)+(B)) is 35-60 wt%, the mass ratio of the component (B) to the sum of the component (A) and component (B) ((B) / [(A)+(B)]) is 0.06-0.65%, the content of the component (C) is 1.5-20 wt%, and the content of the component (D) is 6-18 wt%.

A solvent-free acrylic resin composition includes an acrylic resin (A), wherein the acrylic resin (A) contains 5 wt. % to 60 wt. % of a structural moiety derived from a hydroxy group-containing monomer (a1), and an acid value in the resin composition is from 0.001 mgKOH / g to 0.3 mgKOH / g. The solvent-free acrylic resin composition is suppressed in viscosity rise due to heating, and is hence excellent in thermal stability; the composition can be thickly applied when used as an adhesive; and the composition can provide an adhesive excellent in step followability, corrosion resistance, and moist-heat haze resistance.

The invention provides: a reversibly thermochromic aqueous ink composition which exhibits excellent writing performance, while being not susceptible to problems such as aggregation of a coloring agent, increase in the composition viscosity and decrease in the handwriting density; and a refill and a water-based ballpoint pen each using this reversibly thermochromic aqueous ink composition. The reversibly thermochromic aqueous ink composition contains a reversibly thermochromic microcapsule pigment enclosed in a microcapsule that is formed of an organic resin, an N-vinyl-2-pyrrolidone polymer, glycerol and water, wherein: if PMC, PPVP and PG are respective content ratios (mass%) of the reversibly thermochromic microcapsule pigment, the N-vinyl-2-pyrrolidone polymer and the glycerol with respect to the total mass of the ink composition, 0.3 <= PMC / (PPVP + PG) <= 4 and 0.2 <= PPVP / PG <= 5 are satisfied. The refill and the water-based ballpoint pen each internally containing this reversibly thermochromic aqueous ink composition are provided.

There is provided a liquid jetting apparatus including: a liquid jetting head; a cap; a switching mechanism configured to perform switching of a state of the cap between a capping state and an uncapping state; a timer; a purge mechanism; and a controller. The controller performs: calculating a value of a capping-time parameter; and measuring a capping time with the timer. In a case that a purge condition regarding the capping time and the value of the capping-time parameter is satisfied, the controller causes the purge mechanism to perform a purge, and then causes the liquid jetting head to perform a jetting operation.

The present invention relates to a polyimide precursor composition, a method for preparing a polyimide, and polyimide. The polyimide precursor composition contains polyamic acid and a monomeric compound. The polyamic acid is prepared from a monomer mixture by a first reaction, wherein the monomer mixture comprises a diamine compound and a dianhydride compound. The aforementioned monomeric compound has two carboxyl groups and two ester groups. The prepared polyimide precursor composition can be further reacted to obtain a polyimide having good mechanical properties and film properties.

The purpose of the present invention is to prevent the increase in viscosity of a raw material mixture and also prevent the formation of a micropowder that may deteriorate production yield, and / or suppress an unpleasant taste inherent in a plant extract in the production of granules containing the plant extract by extrusion granulation. The present invention relates to a method for producing granules containing a plant extract, characterized by comprising the step of extrusion-granulating a raw material mixture containing the plant extract, wherein the water content in the raw material mixture is 1 to 10% (w / w) and the raw material mixture contains shellac.