| 摘要 |
1,226,122. Polyamides. SCHERING A.G. 1 April, 1968 [1 April, 1967], No. 15525/68. Heading C3R. A polyamide is manufactured by condensing a polymerized fatty acid with a mixture of ethylene diamine and an ether diamine of formula where n is 3-5, x is 0-3 and R is a C 1-12 linear alkylene group which may be substituted by an alkyl group having up to 4 carbon atoms. The fatty acid may be tall oil fatty acid. The ether diamine may be 1,12-diamino-4,9-dioxadodecane, 1,13 - diamino - 4,10 - dioxatridecane, 1,11 - diamino - 4,8 - dioxa - 5 - methylundecane, 1,11 - diamino - 4,8 - dioxa - 5,6 - dimethyl - 7 - propyltmdecane, 1,13 - diamino- 4,7,10 - trioxatridecane, 1,11 - diamino - 6 - oxaundecane, 1,14 - diamino - 4,11 - dioxatetradecane, 1,7 - diamino - 4 - oxaheptane, and 1,10 - diamino - 4,7 - dioxadecane. The polymerized fatty acid may be mixed with a monomeric aliphatic dicarboxylic acid having a chain of 6-10 carbon atoms, e.g. adipic acid, or an aromatic or araliphatic dicarboxylic acid. |
