A release agent for vulcanized rubber molding is provided which has excellent mold releasing properties and washability. This release agent for vulcanized rubber molding contains an alkylene oxide adduct (A) of an amine compound having 4-8 active hydrogen atoms in the molecule, wherein the aforementioned alkylene oxide adduct (A) of an amine compound has a number average molecular weight of 5000-30000, and contains 50-95 mass % of an oxyethylene group.

The present invention relates to an injection mold, an injection molding machine including the injection mold, and a method of manufacturing an injection-molded product using the injection molding machine. More specifically, the present invention relates to an injection mold including a mold having a mold surface on which one or more deposition layers are formed, wherein the deposition layer includes a fluororesin homopolymer or polyether ether ketone (PEEK); an injection molding machine including the injection mold; and a method of manufacturing an injection-molded product using the injection molding machine.

The embodiments relate to a polythiol composition for a plastic optical lens and a polythiourethane-based plastic optical lens prepared therefrom. In the embodiments, a first polythiol compound having an ester group and a mercapto group only as a hydrogen-bondable functional group and a second polythiol compound having an ester group and a hydrogen-bondable functional group other than a mercapto group are used in an appropriate amount. Thus, it is possible to control the viscosity of a polymerizable composition at the initial stage of polymerization at a low temperature of 5 to 15 C. and to stabilize the rate of increase in the viscosity of the composition and the reaction rate thereof, thereby preventing the generation of striae, bubbles, and the like. Further, various plastic lenses such as eyeglass lenses, camera lenses, and the like having excellent appearance characteristics (without striae and bubbles) and excellent optical characteristics can be obtained from the composition.

A method of printing a three-dimensional object is provided. The method includes selectively dispensing, layer by layer, one or more materials to form the three-dimensional object; selectively dispensing, layer by layer, one or more materials to form a support construction for the three-dimensional object; selectively dispensing, layer by layer, one or more materials to form a rigid exterior construction around at least part of the support construction, the rigid exterior having substantially similar strength and elasticity to the three-dimensional object; and forming a release construction around the rigid exterior construction, the release construction being between the rigid exterior construction and the three-dimensional object.

A release agent for vulcanized rubber molding is provided which has excellent mold releasing properties and washability. This release agent for vulcanized rubber molding contains an alkylene oxide adduct (A) of an active hydrogen group-containing compound having four active hydrogen atoms in the molecule, wherein the aforementioned alkylene oxide adduct (A) of an active hydrogen group-containing compound has a number average molecular weight of 5000-30000, and contains 50-95 mass % of an oxyethylene group.

A release agent for vulcanized rubber molding is provided which has excellent mold releasing properties and washability. This release agent for vulcanized rubber molding contains an alkylene oxide adduct (A) of an active hydrogen group-containing compound having four active hydrogen atoms in the molecule, wherein the aforementioned alkylene oxide adduct (A) of an active hydrogen group-containing compound has a number average molecular weight of 5000-30000, and contains 50-95 mass % of an oxyethylene group.

A multi-layered article including a substrate; a release layer including polyvinyl alcohol and at least one cross-linking agent; and a first selective light modulator layer; wherein the release layer crosslinks and is water insoluble is disclosed. Also, disclosed is a multi-layered article including a substrate; a waterborne release layer; and a first selective light modulator layer including a cross-linking agent. Methods of making the multi-layered articles are also disclosed.

A multi-layered article including a substrate; a release layer including polyvinyl alcohol and at least one cross-linking agent; and a first selective light modulator layer; wherein the release layer crosslinks and is water insoluble is disclosed. Also, disclosed is a multi-layered article including a substrate; a waterborne release layer; and a first selective light modulator layer including a cross-linking agent. Methods of making the multi-layered articles are also disclosed.

An imprint method includes, in the peeling step of peeling a mold off the material layer to be transferred, a region-of-contact recognition operation of recognizing and determining a region of contact of the mold with the material layer to be transferred, a center-of-gravity locating operation of determining a center of gravity of a morphology of the thus recognized region of contact on the basis of that morphology, and a peeling operation of determining a point of force for applying peeling force to the mold or the imprinting substrate in relation to the center of gravity determined by the center-of-gravity locating operation, thereby acting the peeling force on the point of force.

In an imprint method in a condensable gas atmosphere, the force (mold releasing force) required to separate a mold from a resist cured film (mold release) has been large. A photocurable composition for performing imprint in an atmosphere containing a condensable gas includes a component (A) which is a (meth)acrylate monomer; a component (B) which is a photopolymerization initiator; and a component (C) which is a mold releasing agent. The saturated solubility of the component (C) in the condensable gas at 5 degrees (Celsius) and 1 atm is 50% by weight or more, the condensable gas being in a liquid state at 5 degrees (Celsius) and 1 atm.