FIELD: organic chemistry, polymers, chemical technology.
SUBSTANCE: invention relates to a method for preparing polyamide that can be used as a structural material. Polyamide is prepared by co-polymerization reaction of ε-caprolactam and 1,6-hexamethylene diisocyanate in the mass ratio = (95-90):(5-10) in the presence of catalyst and an activating agent. As catalyst method involves using ε-caprolactam Li-salt and 2,4-toluylene diisocyanate as an activating agent. The process is carried out at temperature (180 ± 5)°C up to depletion of lactam cycles followed by heating the reaction mass for 2 h. Invention provides preparing polyamides with enhanced values of destroying stress (breaking point) and provides expanding assortment of methods providing preparing polyamides with different physical-mechanical properties also.
EFFECT: improved preparing method.
2 tbl, 4 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR PREPARING POLYAMIDE | 2004 |
|
RU2260014C1 |
| METHOD FOR POLYAMIDE PRODUCTION | 2004 |
|
RU2258072C1 |
| POLYAMIDE PRODUCTION PROCESS | 2001 |
|
RU2218360C2 |
| ADHESIVE PRODUCTION METHOD | 2001 |
|
RU2218377C2 |
| METHOD FOR PRODUCTION OF POLYAMIDE BY ANIONIC POLYMERIZATION OF CAPROLACTAM | 1992 |
|
RU2074866C1 |
| MOULDED POLYAMIDES, METHOD OF THEIR PRODUCTION AND THEIR APPLICATION | 2013 |
|
RU2631324C2 |
| METHOD OF BLOCK-COPOLYMER PREPARING | 1992 |
|
RU2036933C1 |
| CATALYSTS FOR PRODUCING MOULD POLYAMIDE, METHOD OF THEIR PRODUCTION AND THEIR APPLICATION | 2013 |
|
RU2640589C2 |
| METHODS OF PRODUCING CAST POLYAMIDES, STABLE DURING STORAGE OF MIXTURES OF ACTIVATORS AND CATALYSTS, AS WELL AS USE THEREOF TO PRODUCE CAST POLYAMIDES | 2011 |
|
RU2596880C2 |
| POLYMERIC COMPOSITION | 0 |
|
SU1067014A1 |
