Abstract: A headlight includes a housing, a low-beam light source and a high-beam light source, a board, and an upper inner lens and a lower inner lens. The low-beam light source and the high-beam light source are each formed of an LED that is housed in the housing and radiates light. The board controls light beams emitted from the low-beam light source and the high-beam light source. The upper inner lens and the lower inner lens are provided in the housing and allow each of the light beams emitted from the low-beam light source and the high-beam light source to be transmitted through the upper inner lens and the lower inner lens toward the vehicle front side. At least part of the board is disposed to overlap with the rear side of the upper inner lens for the low-beam light source.

Abstract: A headlight includes a housing, a low-beam light source and a high-beam light source, a board, and an upper inner lens and a lower inner lens. The low-beam light source and the high-beam light source are each formed of an LED that is housed in the housing and radiates light. The board controls light beams emitted from the low-beam light source and the high-beam light source. The upper inner lens and the lower inner lens are provided in the housing and allow each of the light beams emitted from the low-beam light source and the high-beam light source to be transmitted through the upper inner lens and the lower inner lens toward the vehicle front side. At least part of the board is disposed to overlap with the rear side of the upper inner lens for the low-beam light source.

Abstract: In a headlight of a motorcycle, a holder, first light sources and second light sources are arranged inside a lamp unit. The lamp unit is formed with a housing and an outer lens. The first light sources are main low beam light sources supported by the holder. The second light sources are subordinate low beam light sources that are supported independently by a housing other than the holder, the housing not permitting adjustment of the optical axis, and produce a smaller amount of light than the first light sources.

Abstract: In a headlight of a motorcycle, a holder, first light sources and second light sources are arranged inside a lamp unit. The lamp unit is formed with a housing and an outer lens. The first light sources are main low beam light sources supported by the holder. The second light sources are subordinate low beam light sources that are supported independently by a housing other than the holder, the housing not permitting adjustment of the optical axis, and produce a smaller amount of light than the first light sources.

Abstract: Provided are hair processing agents capable of permanent waving hair even at a neutral to weakly acidic pH range that causes less irritation to the skin, and hair processing agents in which an unpleasant odor is masked. Hair processing agents contain at least one compound represented by the formula (2). Hair processing agents contain a compound of the formula (2) and at least one compound (ii) selected from thioglycolic acid, thiolactic acid, cysteine, acetylcysteine, cysteamine, acylcysteamine, salts thereof and ester derivatives thereof. Hair processing agents contain a compound of the formula (2), a surfactant and water, and are emulsified. Hair processing agents contain a compound of the formula (2) and a specific perfume.

Abstract: An object of the present invention is to provide a method for industrially producing ?-mercapto carboxylic acids that are useful as synthetic raw materials for medicines and agrochemicals or as additives for polymer compounds from easily available ?,?-unsaturated carboxylic acids in high yields and productivity. The present invention is characterized in that a solvent having an amide group and represented by the formula (1) is used when the ?,?-unsaturated carboxylic acids are reacted with hydrogen sulfides to produce the ?-mercapto carboxylic acids. Particularly, it is more preferable to carry out the reaction at a pH range of 6.0 to 8.

Abstract: A method of the invention industrially produces heterocyclic mercapto compounds useful as raw materials or intermediates in the synthesis of medicaments or pesticides, or as permanent wave agent, with a high yield and high productivity using easily available starting materials. A heterocyclic mercapto compound represented by Formula (1) (wherein X represents any structure of —O—, —S—, —NH—, and —NR1—; R1 represents any of an alkyl group, alkoxy group and alkoxyalkyl group each having 1 to 6 carbon atoms; Y represents an oxygen atom, a sulfur atom or —NR2—; R2 represents a hydrogen atom or alkyl group having 1 to 6 carbon atoms; and Z1 represents a divalent organic residue having at least one mercapto group) is produced by reacting a metal sulfide or a metal hydrosulfide with a compound represented by Formula (2) (wherein X and Y are as defined in Formula (1); and Z2 represents a divalent organic residue having at least one halogen group) in the presence of a solvent at a pH of 7.0 to 11.0.

Abstract: An object of the present invention is to provide a method for industrially producing ?-mercapto carboxylic acids that are useful as synthetic raw materials for medicines and agrochemicals or as additives for polymer compounds from easily available ?,?-unsaturated carboxylic acids in high yields and productivity. The present invention is characterized in that a solvent having an amide group and represented by the formula (1) is used when the ?,?-unsaturated carboxylic acids are reacted with hydrogen sulfides to produce the ?-mercapto carboxylic acids. Particularly, it is more preferable to carry out the reaction at a pH range of 6.0 to 8.

Abstract: The invention relates to a method for efficiently producing ?-mercaptocarboxylic acids using a solid acid catalyst such as zeolite, which product corresponds to respective starting materials selected from ?,?-unsaturated carboxylic acids (?,?-unsaturated carboxylic acid, ?,?-unsaturated carboxylic acid ester, ?,?-unsaturated amide, ?,?-unsaturated aldehide and ?,?-unsaturated ketone) and hydrogen sulfides (hydrogen sulfide, sulfide salt and hydrosulfide salt), wherein a solvent compatible with water is used in the reaction. According to the invention, ?-mercaptocarboxylic acids which are useful as additives in synthetic materials for pharmaceutical or agricultural agents and in polymer compounds can be industrially produced efficiently by using easily available ?,?-unsaturated carboxylic acid (such as crotonic acid) at high yield.

Abstract: A method of the invention industrially produces heterocyclic mercapto compounds useful as raw materials or intermediates in the synthesis of medicaments or pesticides, or as permanent wave agent, with a high yield and high productivity using easily available starting materials. A heterocyclic mercapto compound represented by Formula (1) (wherein X represents any structure of —O—, —S—, —NH—, and —NR1—; R1 represents any of an alkyl group, alkoxy group and alkoxyalkyl group each having 1 to 6 carbon atoms; Y represents an oxygen atom, a sulfur atom or —NR2—; R2 represents a hydrogen atom or alkyl group having 1 to 6 carbon atoms; and Z1 represents a divalent organic residue having at least one mercapto group) is produced by reacting a metal sulfide or a metal hydrosulfide with a compound represented by Formula (2) (wherein X and Y are as defined in Formula (1); and Z2 represents a divalent organic residue having at least one halogen group) in the presence of a solvent at a pH of 7.0 to 11.0.

Abstract: Provided are hair processing agents capable of permanent waving hair even at a neutral to weakly acidic pH range that causes less irritation to the skin, and hair processing agents in which an unpleasant odor is masked. Hair processing agents contain at least one compound represented by the formula (2). Hair processing agents contain a compound of the formula (2) and at least one compound (ii) selected from thioglycolic acid, thiolactic acid, cysteine, acetylcysteine, cysteamine, acylcysteamine, salts thereof and ester derivatives thereof. Hair processing agents contain a compound of the formula (2), a surfactant and water, and are emulsified. Hair processing agents contain a compound of the formula (2) and a specific perfume.