Abstract: Provided is a technique capable of correcting not only a variation due to a moving speed and a temperature change of a lens but also a variation due to a focal distance and a temperature change of the lens, with a high degree of accuracy. An optical device (100) includes a control unit (1), a lens (2), an image sensor (3), a temperature sensor (4), a storage unit (5) that stores a driving pulse number, lens information, and speed information of the lens (2), an image signal processing unit (6) that acquires the lens information and the speed information from the storage unit (5) under the control of the control unit (1), a piezoelectric element (7) that moves the lens (2), and a driver (8) that controls the piezoelectric element (7).

Abstract: A method for producing a branched-polyether resin composition of the present invention includes a first step of obtaining a reaction mixture including: (1-A) a branched-polyether resin (X) containing a hydroxyl group, an acryloyl group, and an epoxy group and (1-B) at least one resin component selected from the group consisting of (1-B-1) a diacrylate (A2) of an aromatic difunctional epoxy resin, (1-B-2) a monoacrylate (A1) of an aromatic difunctional epoxy resin, and (1-B-3) an aromatic difunctional epoxy resin (B) other than (A1) and (A2); and a second step of mixing the reaction mixture and an unsaturated monocarboxylic acid, and reacting the epoxy group in the reaction mixture and a carboxyl group in the unsaturated monocarboxylic acid.

Abstract: A method for producing a branched-polyether resin composition of the present invention includes a first step of obtaining a reaction mixture including: (1-A) a branched-polyether resin (X) containing a hydroxyl group, an acryloyl group, and an epoxy group and (1-B) at least one resin component selected from the group consisting of (1-B-1) a diacrylate (A2) of an aromatic difunctional epoxy resin, (1-B-2) a monoacrylate (A1) of an aromatic difunctional epoxy resin, and (1-B-3) an aromatic difunctional epoxy resin (B) other than (A1) and (A2); and a second step of mixing the reaction mixture and an unsaturated monocarboxylic acid, and reacting the epoxy group in the reaction mixture and a carboxyl group in the unsaturated monocarboxylic acid.

Abstract: A radiation-curable resin composition for shape-replication of the present invention includes a polyester resin (R) whose number average molecular weight (Mn) is 1,000 to 8,000; and a polymerizable vinyl compound (V), wherein a temperature (T4), at which a complex viscosity (?*) of components excluding any solvent at a frequency of 1 Hz is 1×104 dPa·s, is 30° C. or higher, and a temperature (T6), at which a complex viscosity (?*) at a frequency of 1 Hz is 1×106 dPa·s, is 100° C. or lower.

Abstract: This process for producing a modified rosin ester resin composition for use in a lithographic ink reacts rosin (A), an acid modified rosin (B) which is obtained by denaturating rosin (A) with an ?,?-unsaturated dicarboxylic acid and/or anhydride thereof (d), an oil modified rosin (C) which is obtained by denaturating rosin (A) with a vegetable oil (c) having an iodine value of 140 or more, with a polyol (D) of trihydric or more.

Abstract: A method for preparing a water-based urethane resin composition by reacting a urethane prepolymer (A), which has an isocyanate group at a terminal end and has a carboxyl group in a molecular side chain, a chain extender (B) of the urethane prepolymer (A), and a basic compound (C) in a reaction solvent (D), which comprises: (1) using, as the urethane prepolymer (A), which has an isocyanate group at a terminal end and has a carboxyl group in a molecular side chain, a urethane prepolymer (a) in which 70 molar % or more of terminal isocyanate groups are attached to carbon of secondary and/or tertiary aliphatic hydrocarbons, the urethane prepolymer being soluble in an alcohol solvent (d), (2) using, as the chain extender (B) of the urethane prepolymer (A), a polyamine (b) having two or more amino groups containing active hydrogen, and (3) using, as the reaction solvent (D), a water-based solvent containing the alcohol solvent (d), has advantages in view of environmental conservation and has good productivity.

Abstract: A method for preparing a water-based urethane resin composition by reacting a urethane prepolymer (A), which has an isocyanate group at a terminal end and has a carboxyl group in a molecular side chain, a chain extender (B) of the urethane prepolymer (A), and a basic compound (C) in a reaction solvent (D), which comprises:

Abstract: Disclosed is a construction material containing bitumen comprising (A) a polyol component, the polyol component consisting essentially of (a-1) a hydroxy-polyoxyalkylene ether of bisphenol A and/or bisphenol F, and (a-2) an aliphatic polyol, (B) a polyisocyanate component, (C) a bitumen, and/or (D) an aggregate. The construction material has improved water-proof and mechanical properties.

Abstract: A working material for construction or repair comprising (A) a mixture of 0.5 to 30% by weight of (a-1) a hydroxide of a divalent or higher basic metal, 10 to 99% by weight of (a-2) an aggregate and 0.5 to 70% of (a-3) a bituminous substance, the total amount of these materials (a-1), (a-2) and (a-3) being 100% by weight, and covering the mixture (A), (C) oxidized rosin or a mixture of (C) oxidized rosin with (D) a compound containing more than one carboxy group per molecule on an average and/or (B) a liquid hydrocarbon or a vegetable oil.

Abstract: A pigment paste comprising a pigment and as a pigment dispersing agent, a compound having a basic structure represented by the following formula ##STR1## wherein R.sub.1 represents a hydrogen atom or a C.sub.1 -C.sub.4 alkyl group, and R.sub.2 represents a residue of a diol or polyol, or a mixture of said pigment dispersing agent and an organic solvent, said pigment being dispersed in said pigment dispersing agent or in said mixture.

Abstract: An epoxy resin composition is provided consisting essentially of(a) an epoxy compound having at least two epoxy groups in each of its molecules,(b) an ester of a mercaptoalkylcarboxylic acid having on an average more than two thiol groups in each of its molecules and in which the number of carbon atoms of the alkylene groups between the ester groups and the thiol groups is in excess of one on an average, and(c) a tertiary amine-type curing accelerator.This resin composition is used for new construction or repairs either as such or in the form of a construction material obtained by mixing this composition with aggregates and optionally with additives.

Abstract: A pigment paste comprising a pigment and as a pigment dispersing agent, a compound having a basic structure represented by the following formula ##STR1## wherein R.sub.1 represents a hydrogen atom or a C.sub.1 -C.sub.4 alkyl group, and R.sub.2 represents a residue of a diol or polyol, or a mixture of said pigment dispersing agent and an organic solvent, said pigment being dispersed in said pigment dispersing agent or in said mixture.