[ REC. # ] |
11 |
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화학종명(영) |
Alkyl-Substituted Amino Acids |
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화학종명(한) |
알킬-치환 아미노산류 (Including salts and alkyl-substituted imino acids; excluding betaines) |
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설명(영) |
One group of Alkyl-Substituted Amino Acids is prepared by reaction of acrylic acid with fatty Amines. The resulting products conform to the Type I or Type II structure where R represents an alkyl chain and X+ may be hydrogen or the cation of a base. The amino derivatives (Type I) are available as the free acids, e.g., Lauraminopropionic Acid, or as salts of various bases, e.g., TEA-Myristaminopropionate. On the other hand, the imino derivatives (Type II) are prepared as the mono-salt, e.g., Sodium C12-15 Alkoxypropyl Iminodipropionate, or the disodium salts, e.g., Disodium Tallowiminodipropionate. Another group of Alkyl-Substituted Amino Acids (Type III) is formed when the N-atom in a natural (α-) Amino Acid is alkylated to form a mono- or disubstituted derivative such as Dimethyl Aspartic Acid. A fourth type of Alkyl-Substituted Amino Acids is formed when a dialkyl amino acid is further alkylated with a third alkyl substituent (Type IV). A similar type of compound is formed when an alkyl-substituted tertiary amine is reacted with chloroacetic acid. R' and R'' are frequently identical (sometimes OH-substituted) short-chain alkyl groups, as in the case of Dihydroxyethyl Soy Glycinate. The N-atom in Type IV derivatives always carries a positive charge, regardless of pH. Like simple amino acids, the four types of alkyl-substituted amino acids may exist in the form of zwitterions, depending on pH. Type IV Alkyl-Substituted Amino Acids in which the N-atom carries two methyl groups are listed separately as Betaines. These substituted amino and imino acids are commonly used as amphoteric emulsifiers and detergents, as foaming agents, and as skin and hair conditioning agents. |
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설명(한) |
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해당원료 |
AMINOPROPYL LAURYLGLUTAMINE; |
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