Abstract: A process for producing a solid dispersion comprising a resin and a functional compound dispersed therein, which comprises: kneading a powdery functional compound together with deionized water while gradually introducing the deionized water; adding a resin and, according to need, an additive to the mixture; subsequently heating and kneading the resultant mixture in a vessel which has an atmosphere causing the resin to soften at a temperature not higher than the boiling point of the deionized water and which has been tightly closed according to need so as to function like a pressure cooker to thereby disperse the functional compound into the softened resin; and kneading the resultant dispersion with heating at ordinary pressure or a reduced pressure to remove the water by vaporization.
Abstract: A continuous polymerization apparatus is provided for producing an amphoteric electrolyte resin by continuous bulk polymerization at low cost, which apparatus includes a reaction vessel, the reaction vessel including at least four polymerization zones adjacent to each other in series, each polymerization zone being separated by a partition plate, the partition plates admitting a stirring shaft with stirrers, each of the polymerization zones having a thermosensor for sensing temperature within the polymerization zone, a heating device for heating the polymerization zone and a cooling device for cooling the polymerization zone.
Abstract: A process for producing an amphoteric electrolyte resin by continuous bulk polymerization at low cost is provided. Also provided is an apparatus for achieving the process. The process comprises the steps of: feeding, from the mixture supply side, a mixture comprising 0.01 to 10 wt % of at least one radically polymerizable basic monomer containing a nitrogen atom, 0.01 to 35 wt % of at least one radically polymerizable acidic monomer having a carboxyl group and 45 to 99.98 wt % of a monomer capable of copolymerizing with these monomers.
Abstract: A liquid non-aqueous dispersion comprising a silicone oil and a copolymer dispersed therein, the copolymer comprising (A) at least one radical polymerizable macromonomer containing dimethyl polysiloxane, and (B) at least one radical copolymerizable monomer with the macromonomer (A), which comprises at least one (meth)acrylate monomer and optionally at least one vinyl monomer. This liquid non-aqueous dispersion has excellent water resistance, oil resistance and adhesive properties, and when used as a component of cosmetics, it can meet both requirements for long lasting make-up and good feeling of use of cosmetics.
Abstract: A process for producing an amphoteric electrolyte resin by continuous bulk polymerization at low cost is provided. Also provided is an apparatus for achieving the process. The process comprises the steps of: feeding, from the mixture supply side, a mixture comprising 0.01 to 10 wt % of at least one radically polymerizable basic monomer containing a nitrogen atom, 0.01 to 35 wt % of at least one radically polymerizable acidic monomer having a carboxyl group and 45 to 99.98 wt % of a monomer capable of copolymerizing with these monomers or a mixture of the mixture and a polymerization initiator and/or an organic solvent having a boiling point of 80° C.
Abstract: There is provided a method for producing colorants which can exhibit excellent color development even in a small amount and are low in thixotropy. The constituent feature of the present invention comprises: enhancing the molecular extinction coefficient of the coloring matter substance by ion exchanging method, to afford a room for increasing B (resin) of P/B; then a composition is designed and employed to enhance the effect increasing the polar group concentration which is a role of resin and the quality of the effect; it thus becomes possible to achieve the limit value of the molecular extinction coefficient as much as possible and to eliminate the factors adversely affecting the present process.
Abstract: A liquid non-aqueous dispersion including a silicone oil and a copolymer dispersed therein, the copolymer including (A) at least one radical polymerizable macromonomer containing dimethyl polysiloxane, and (B) at least one radical copolymerizable monomer with the macromonomer (A), which includes at least one (meth)acrylate monomer and optionally at least one vinyl monomer. This liquid non-aqueous dispersion has excellent water resistance, oil resistance and adhesive properties, and when used as a component of cosmetics, it can meet both requirements for long lasting make-up and good feeling of use of cosmetics.
Abstract: The present invention provides a colorant for inkjet inks which is free from mechanical selectivity, high in light-durability, high in reliability and low in cost. By paying attention to the chemical properties of coloring matter substances and utilizing the technical rules accumulated in the past faithfully to the properties of the coloring matter substances, an epoch-making process for producing fine-particulate colorants by a method comprising five simple steps is provided.
Abstract: A process for producing a cationic emulsion stable to alkalis having an average particle diameter of 0.01 to 0.1 micron, in which, using as an emulsifier, a water-soluble polymer A2 obtained by subjecting a polymer A1 obtained by copolymerizing an amino group-containing compound with a compound copolymerizable therewith in the presence of a polymerization initiator, to neutralization with an organic or inorganic acid, a specific epoxy group-containing acrylate compound (c) and a compound copolymerizable therewith are subjected in combination to emulsion polymerization in the presence of a redox catalyst system in water as a medium to obtain an emulsion D; the emulsion D is then reacted with epichlorohydrin. The cationic emulsion is coated on paper, a film, or a strongly alkaline substrate to impart water resistance.
Abstract: Provided is a paint having ultraviolet absorbability and curing function comprising as an essential component an isocyanate compound (A) which has a functional group having ultraviolet absorbability on a side chain and contains residual isocyanate group and which is obtained by reacting a part of isocyanate groups of an isocyanate prepolymer and/or monomer having at least two free isocyanate groups with an ultraviolet absorber having active hydrogen, and, if necessary, additionally comprising an optional isocyanate prepolymer (B) other than (A), and further provided is a paint superior in weather resistance obtained by reacting said paint with a polymeric compound having active hydrogen. Thus, there can be provided a paint excellent in long-term weather resistances such as gloss retention and discoloration resistance in long-term outdoor use.
Abstract: Disclosed is a method for producing an aqueous nail enamel composition comprising the following procedure: an aqueous mixture which comprises, as essential components, water and a pigment of 3 &mgr;m or less in average particle size at a concentration of the pigment of 60% or less and is previously subjected to contact treatment with a substance having an ion exchangeability is kneaded under heating with a polyester polymer having a chemical structure containing a phenyl group and having a weight-average molecular weight of 2000-20000 and a softening point of 120° C.
Abstract: Provided is a method for producing an amphoteric resin which comprises reacting (1) a copolymerizable basic prepolymer A2 which is obtained by reacting a prepolymer A1 being obtained by polymerization of an amino group-containing &agr;, &bgr;-ethylenically polymerizable compound, other &agr;, &bgr;-ethylenically polymerizable compound and a polymerization initiator containing a carboxyl group at an end, with a compound having an epoxy group represented by the following formula (I):
(wherein R1 represents H or a methyl group, and R represents a straight or branched chain alkyl group of 1-10 carbon atoms) in an amount of 0.1-1.0 equivalent for the amino group equivalent of the prepolymer A1 and (2) an &agr;, &bgr;-ethylenically polymerizable acidic prepolymer B2 which is obtained by carrying out the reaction in the same manner as above with (3) other &agr;, &bgr;-ethylenically polymerizable compound C.
Abstract: There are provided a finely dispersed material of a functional compound such as pigment or the like in the state of its inherent average particle diameter and a process for producing a finely dispersed material of a functional compound into a binder resin, in which the compound is dispersed in the state of its inherent average particle diameter not more than 3 microns, in spite of using the functional compound having an apparently large average particle diameter by agglomeration in comparison with the inherent average particle diameter of the compound, wherein when the above compound before dispersion is apparently in the dry state, de-ionized water is added thereto to form a hydrous paste of the compound and then this hydrous paste is contacted with a substance having an ion-exchange function selected depending upon the properties of the impurity ions contained in the above functional compound in a mixed solvent composed of de-ionized water and an organic solvent miscible with water to remove the impurity io
Abstract: A simple instrument for measuring the transmittance of a film impregnated with a pyridylazo-2-naphthol or dimethylphenylazo-2-naphthol dye having a continuous absorption spectrum having a plurality of absorption peaks in the wavelength range of from 350 to 800 nm, which comprises a light-emitting diode having a peak of relative emission intensity in the vicinity of a wavelength of 450 nm; a means for allowing the diode to emit a light and adjusting the quantity of the light; a band-pass filter which consists essentially of a resin film or glass plate coated with a coating composition composed essentially of at least one pigment selected from the group consisting of a Phthalocyanine Blue pigment and an organic violet pigment finely dispersed in a binder resin, and which has a peak of transmittance in the range of from 330 to 480 nm, the transmittance at the peak being 40% or more the transmittances at 260 nm or less and 520 nm or more being 1% or less, said band-pass filter being placed in such a position that