Abstract: The objective of this invention is to provide a photodiode which has high sensitivity even to light with a wavelength in the blue region while maintaining the high-frequency characterstics. The n type second semiconductor layer (13) containing an n type electroconductive impurity at a low concentration is formed directly or via an intrinsic semiconductor layer (11) on the p type first semiconductor layer (10). The third semiconductor layer (20) containing an n type electroconductive impurity at a medium concentration is formed shallower than said second semiconductor layer (13) in its main plane. The fourth semiconductor layer (21) containing an n type electroconductive impurity at a high concentration is formed shallower than said third semiconductor layer (20) in the main plane of the third semiconductor layer (20).

Abstract: A hair cosmetic which can impart, to hairs, flexibility, smoothness and oily feeling when the hairs are wetted and smoothness, softness and combing easiness after the hairs are dried are provided, the hair cosmetic comprising an amine represented by the formula (I): Formula (I) (wherein R1 represents a C8-40 alkyl group or alkenyl group or a group represented by the formula R5O-(AO)n—CmH2m—(R5 represents a C8-40 alkyl group or alkenyl group having 8 to 40 carbon atoms, A represents a C2-3 alkylene group, n denotes a number from 0 to 30 in average and m denotes an integer of 2 or 3), R2 represents a C1-5 alkylene group, R3 represents H, a C1-24 alkyl group, alkenyl group or hydroxyalkyl group or a C6-28 aryl group or arylalkyl group, R4 represents H, a C1-5 alkyl group, alkylene group or hydroxyalkyl group or a C6-28 aryl group or arylalkyl group, p denotes an integer from 1 to 3, q and r denote integers from 0 to 2 and p+q+r is equal to 3.

Abstract: A hair cosmetic which can impart, to hairs, flexibility, smoothness and oily feeling when the hairs are wetted and smoothness, softness and combing easiness after the hairs are dried are provided, the hair cosmetic comprising an amine represented by the formula (I): (wherein R1 represents a C8-40 alkyl group or alkenyl group or a group represented by the formula R5O-(AO)n—CmH2m—(R5 represents a C8-40 alkyl group or alkenyl group having 8 to 40 carbon atoms, A represents a C2-3 alkylene group, n denotes a number from 0 to 30 in average and m denotes an integer of 2 or 3), R2 represents a C1-5 alkylene group, R3 represents H, a C1-24 alkyl group, alkenyl group or hydroxyalkyl group or a C6-28 aryl group or arylalkyl group, R4 represents H, a C1-5 alkyl group, alkylene group or hydroxyalkyl group or a C6-28 aryl group or arylalkyl group, p denotes an integer from 1 to 3, q and r denote integers from 0 to 2 and p+q+r is equal to 3.

Abstract: The objective of this invention is to provide a type of photodiode and the method of manufacturing the photodiode characterized by the fact that it has a higher photoelectric conversion efficiency (sensitivity) than that in the prior art. PIN photodiode 100 has a p-type silicon substrate, p-type silicon layer 112, n-type silicon layer 114 formed on p-type silicon layer 112 and having a junction plane with silicon layer 112, n-type low-resistance silicon region 116 that is formed to a prescribed depth from the surface of silicon layer 114 and has an impurity concentration higher than that of silicon layer 114, silicon oxide film 120 formed on silicon region 116, and silicon nitride film 122 formed on silicon oxide film 120.

Abstract: The objective of this invention is to provide a photodiode which has high sensitivity even to light with a wavelength in the blue region while maintaining the high-frequency characterstics. The n type second semiconductor layer (13) containing an n type electroconductive impurity at a low concentration is formed directly or via an intrinsic semiconductor layer (11) on the p type first semiconductor layer (10). The third semiconductor layer (20) containing an n type electroconductive impurity at a medium concentration is formed shallower than said second semiconductor layer (13) in its main plane. The fourth semiconductor layer (21) containing an n type electroconductive impurity at a high concentration is formed shallower than said third semiconductor layer (20) in the main plane of the third semiconductor layer (20).

Abstract: The present invention provides a softener composition which contains a softening base having an excellent softening effect and satisfactory biodegradability. That is, the present invention provides the softener composition which comprises (A) a nonionic compound which has at least one C5-36 alkyl or alkenyl group and an amide bond but contains no dissociative group of amino or carboxyl group; and (B) at least one member selected among (B-?) cationic or ampholytic surfactants having one C5-36 alkyl or alkenyl group or one optionally substituted aryl group and (B-?) amino compounds having at least one C5-36 alkyl or alkenyl group and salts of the compounds.

Abstract: The present invention provides a softening base and a softener having biodegradability employing a quaternary ammonium salt composition comprising (M) a monoester quaternary salt represented by the formula (I), (D) a diester quaternary salt represented by the formula (II) and (T) a triester quaternary salt represented by the formula (III), wherein the amount of (M) is 15 to 85% by weight, the amount of (D) is 0 to 44% by weight and the amount of (T) is 15 to 85% by weight based on the total amounts of (M), (D) and (T). The present invention also provides a process for producing the softener base and composition. wherein R, R1, n and X? are defined herein.

Abstract: A softener composition, which contains tri-long-chain alkyl quaternary ammonium salt that has been considered to be difficult to use as a softener base agent, and which can provide a softener composition that provides a sufficient softening performance, is provided with (A) a cationic surfactant comprising at least one selected from the group consisting of quaternary ammonium salts represented by the formulae (I), (II) or (III), wherein the ratio of quaternary ammonium salt represented by the formula (I) to the total amount of these salts exceeds 50 weight %, with the ratio thereof represented by (III) being set to not more than 10%, and (B) at least one nonionic surfactant. In this case, (A) may include tertiary amine. (wherein, R1, R2 and R3 represent long-chain alkyl groups, etc. having total carbon atoms of 8 to 40, which may be intersected by an ether group, an ester group or an amide group; R4 represents an alkyl group, etc. having carbon atoms of 1 to 6, and X? represents an anionic group.

Abstract: An aqueous high-concentration solution of N,N-dialkylglycine, economical, easy to handle, and useful for subsequent organic chemical reactions, is provided. Also is provided a process for production thereof. The aqueous high-concentration solution of N,N-dialkylglycine which contains the N,N-dialkylglycine at a concentration of 30–80% by mass, and a metal-mineral acid salt at a content of 0.3–3% by mass can be produced industrially from an aqueous N,N-dialkylglycine alkali metal salt as the source material by the steps of (i) neutralizing an aqueous solution of an N,N-dialkylglycine alkali metal salt with a mineral acid, (ii) condensing the obtained aqueous solution by removal of water, and (iii) separating by solid-liquid separation the deposited alkali metal-mineral acid salt from the resulting slurry of the aqueous N,N-dialkylglycine solution and the alkali metal-mineral acid salt.

Abstract: A softener composition, which contains tri-long-chain alkyl quaternary ammonium salt that has been considered to be difficult to use as a softener base agent, and which can provide a softener composition that provides a sufficient softening performance, is provided with (A) a cationic surfactant comprising at least one selected from the group consisting of quaternary ammonium salts represented by the formulae (I), (II) or (III), wherein the ratio of quaternary ammonium salt represented by the formula (I) to the total amount of these salts exceeds 50 weight %, with the ratio thereof represented by (III) being set to not more than 10%, and (B) at least one nonionic surfactant. In this case, (A) may include tertiary amine. (wherein, R1, R2 and R3 represent long-chain alkyl groups, etc. having total carbon atoms of 8 to 40, which may be intersected by an ether group, an ester group or an amide group; R4 represents an alkyl group, etc. having carbon atoms of 1 to 6, and X? represents an anionic group.

Abstract: A hair cosmetic which can impart, to hairs, flexibility, smoothness and oily feeling when the hairs are wetted and smoothness, softness and combing easiness after the hairs are dried are provided, the hair cosmetic comprising an amine represented by the formula (I): Formula (I) (wherein R1 represents a C8-40 alkyl group or alkenyl group or a group represented by the formula R5O—(AO)n—CmH2m—(R5 represents a C8-40 alkyl group or alkenyl group having 8 to 40 carbon atoms, A represents a C2-3 alkylene group, n denotes a number from 0 to 30 in average and m denotes an integer of 2 or 3), R2 represents a C1-5 alkylene group, R3 represents H, a C1-24 alkyl group, alkenyl group or hydroxyalkyl group or a C6-28 aryl group or arylalkyl group, R4 represents H, a C1-5 alkyl group, alkylene group or hydroxyalkyl group or a C6-28 aryl group or arylalkyl group, p denotes an integer from 1 to 3, q and r denote integers from 0 to 2 and p+q+r is equal to 3.

Abstract: A hair cosmetic which can impart, to hairs, flexibility, smoothness and oily feeling when the hairs are wetted and smoothness, softness and combing easiness after the hairs are dried are provided, the hair cosmetic comprising an amine represented by the formula (I): (wherein R1 represents a C8-40 alkyl group or alkenyl group or a group represented by the formula R5O-(AO)n—CmH2m—(R5 represents a C8-40 alkyl group or alkenyl group having 8 to 40 carbon atoms, A represents a C2-3 alkylene group, n denotes a number from 0 to 30 in average and m denotes an integer of 2 or 3), R represents a C1-5 alkylene group, R represents H, a C1-24 alkyl group, alkenyl group or hydroxyalkyl group or a C6-28 aryl group or arylalkyl group, R4 represents H, a C1-5 alkyl group, alkylene group or hydroxyalkyl group or a C6-28 aryl group or arylalkyl group, p denotes an integer from 1 to 3, q and r denote integers from 0 to 2 and p+q+r is equal to 3.

Abstract: A softener composition, which contains tri-long-chain alkyl quaternary ammonium salt that has been considered to be difficult to use as a softener base agent, and which can provide a softener composition that provides a sufficient softening performance, is provided with (A) a cationic surfactant comprising at least one selected from the group consisting of quaternary ammonium salts represented by the formulae (I), (II) or (III), wherein the ratio of quaternary ammonium salt represented by the formula (I) to the total amount of these salts exceeds 50 weight %, with the ratio thereof represented by (III) being set to not more than 10%, and (B) at least one nonionic surfactant. In this case, (A) may include tertiary amine. (wherein, R1, R2 and R3 represent long-chain alkyl groups, etc. having total carbon atoms of 8 to 40, which may be intersected by an ether group, an ester group or an amide group; R4 represents an alkyl group, etc. having carbon atoms of 1 to 6, and X? represents an anionic group.

Abstract: An aqueous high-concentration solution of N,N-dialkylglycine, economical, easy to handle, and useful for subsequent organic chemical reactions, is provided. Also is provided a process for production thereof. The aqueous high-concentration solution of N,N-dialkylglycine which contains the N,N-dialkylglycine at a concentration of 30-80% by mass, and a metal-mineral acid salt at a content of 0.

Abstract: The present invention provides a softener exhibiting a excellent softening effect and a satisfactory biodegradability.

Abstract: The present invention provides a softener composition which contains a softening base having an excellent softening effect and satisfactory biodegradability. That is, the present invention provides the softener composition which comprises (A) a nonionic compound which has at least one C5-36 alkyl or alkenyl group and an amide bond but contains no dissociative group of amino or carboxyl group; and (B) at least one member selected among (B-&agr;) cationic or ampholytic surfactants having one C5-36 alkyl or alkenyl group or one optionally substituted aryl group and (B-&agr;) amino compounds having at least one C5-36 alkyl or alkenyl group and salts of the compounds.

Abstract: The present invention provides a softener composition which contains a softening base having an excellent softening effect and satisfactory biodegradability. That is, the present invention provides the softener composition that has (A) a nonionic compound which has at least one C5-C36 alkyl or alkenyl group and an amide bond but contains no dissociative group of amino or carboxyl group; and (B) at least one member selected among (B-&agr;) cationic or ampholytic surfactants having one C5-C36 alkyl or alkenyl group or one optionally substituted aryl group and (B-&bgr;) amino compounds, having at least one C5-C36 alkyl or alkenyl group and salts of the compunds.

Abstract: A softener composition, which contains tri-long-chain alkyl quaternary ammonium salt that has been considered to be difficult to use as a softener base agent, and which can provide a softener composition that provides a sufficient softening performance, is provided with (A) a cationic surfactant comprising at least one selected from the group consisting of quaternary ammonium salts represented by the formulae (I), (II) or (III), wherein the ratio of quaternary ammonium salt represented by the formula (I) to the total amount of these salts exceeds 50 weight %, with the ratio thereof represented by (III) being set to not more than 10%, and (B) at least one nonionic surfactant. In this case, (A) may include tertiary amine.

Abstract: A hair cosmetic which can impart, to hairs, flexibility, smoothness and oily feeling when the hairs are wetted and smoothness, softness and combing easiness after the hairs are dried are provided, the hair cosmetic comprising an amine represented by the formula (I):

Abstract: The present invention provides a softener composition exhibiting an excellent softening effect and high biodegradability. That is, the present invention provides a softener composition having (A) at least one quaternary ammonium salt having at least two C5-C36 alkyl or alkenyl groups which may be interrupted by an ester linkage, amide linkage or ether linkage and (B) a tertiary amino compound (I) a salt thereof or a mixture of the same: wherein R1 and R2 represent a C1-C3 alkyl, hydroxyalkyl, aminoalkyl group or the like and R3 represents a C5-C36 alkyl group which is interrupted by an ester linkage, amide linkage or ether linkage, or the like.