反応 #343689

反応方程式

caprolactam

6-aminocaproic acid

adipic acid hexamethylene diamine

→

nylon 6/66

反応条件

後処理

1. 1
   その他phase polymerization from a diacid-diamine complex which
2. 2
   その他may be prepared either in situ or in a separate step
3. 3
   その他the reaction
4. 4
   その他a relatively low temperature, generally 80° to 120° C.
5. 5
   温度The mixture is then heated to the polymerization temperature
6. 6
   その他the polymerization

実験手順

The low molecular weight polyamides are generally prepared by melt phase polymerization from a diacid-diamine complex which may be prepared either in situ or in a separate step. In either method, the diacid and diamine are used as starting materials. Alternatively, an ester form of the diacid may be used, preferably the dimethyl ester. If the ester is used, the reaction must be carried out a a relatively low temperature, generally 80° to 120° C., until the ester is converted to an amide. The mixture is then heated to the polymerization temperature. In the case of polycaprolactam, either caprolactam or 6-aminocaproic acid can be used as a starting material and the polymerization may be catalyzed by the addition of adipic acid/hexamethylene diamine salt which results in a nylon 6/66 copolymer. When the diacid diamine complex is used, the mixture is heated to melting and stirred until equilibration.

出典