ENRICHED WITH 3-CARANLACTAM ISOMER AND POLYAMIDE BASED ON IT WITH HIGH OPTICAL PURITY AND CONTROLLED CRYSTALLINITY FOR HIGH-PERFORMANCE APPLICATIONS Russian patent published in 2023 - IPC C08G69/14 C07C249/08 C07C251/44 C07C45/58 C07C49/433 C07D201/04 C07D223/32 

FIELD: polycaranamides.

SUBSTANCE: invention relates to polycaranamides, which are 3S or 3R-polycaranamide, 3S/3R-co-polycaranamide, to methods for obtaining: a mixture of 3S- and 3R-caranone enriched in isomers from 3-caranepoxide, a mixture of 3S- and 3R-caranoxime enriched in isomers from 3-caranepoxide, enriched in isomers of a mixture of 3S- and 3R-caranlactam from 3-caranepoxide, enriched in isomers of polycaranamide from 3-caranepoxide, 3S- or 3R-caranlactam from 3-carene, as well as to 3S-caranoxime, 3S-caranlactam and a plastic product. 3S- and 3R-polycaranamides are compounds of formulas

and respectively. 3S/3R-co-polycaranamide is a compound of the formula

The present invention provides a method for the production of polyamides from renewable raw materials or by-products, as well as a method for the production of monomers necessary for the production of polyamide and intermediate products for the synthesis of these monomers.

EFFECT: resulting polyamides have improved properties, namely greater transparency and/or strength and/or toughness and/or stereoregularity, in particular for stereo- or enantioselective applications.

26 cl, 83 dwg, 13 tbl, 11 ex