AGRICULTURAL FILM CONTAINING COPOLYAMIDE FROM DIAMINE, DIMERIC ACID AND LACTAM Russian patent published in 2021 - IPC C08G69/14 C08G69/34 C08G69/36 B32B27/34 

FIELD: agriculture.

SUBSTANCE: present invention relates to the use of agricultural film (AF) in the agricultural sector. The film contains at least one copolyamide, and the copolyamide is obtained by polymerizing from 5 to 99 wt % of at least one lactam and from 1 to 95 wt % of a mixture of monomers (M). The mixture of monomers (M) contains (B1) at least one dimeric acid with 32-40 carbon atoms and (B2) at least one aliphatic diamine with 4-12 carbon atoms.

EFFECT: resulting agricultural film has a high tensile strength, both in the direction of extrusion and perpendicular to it, and also has a higher puncture resistance, better acid resistance and can be used as a mulch film, silage film, greenhouse film or silo film.

15 cl, 8 tbl, 4 ex