	US 11,696,533 B2
	Agricultural film comprising a copolyamide of a diamine, a dimer acid and a lactam
Rolf Minkwitz, Ludwigshafen (DE); Frank Reil, Ludwigshafen (DE); Martina Schoemer, Ludwigshafen (DE); and Johannes Klaus Sprafke, Ludwigshafen (DE)
Assigned to BASF SE, Ludwigshafen (DE)
Appl. No. 16/332,986
Filed by BASF SE, Ludwigshafen am Rhein (DE)
PCT Filed Sep. 5, 2017, PCT No. PCT/EP2017/072223 § 371(c)(1), (2) Date Mar. 13, 2019, PCT Pub. No. WO2018/050485, PCT Pub. Date Mar. 22, 2018.
Claims priority of application No. 16188745 (EP), filed on Sep. 14, 2016.
Prior Publication US 2019/0269075 A1, Sep. 5, 2019
Int. Cl. C08G 69/14 (2006.01); A01G 9/14 (2006.01); A01G 13/02 (2006.01); B32B 27/08 (2006.01); B32B 27/34 (2006.01); C08G 69/34 (2006.01); C08G 69/36 (2006.01); C08L 77/08 (2006.01)

CPC A01G 9/1438 (2013.01) [A01G 13/0275 (2013.01); B32B 27/08 (2013.01); B32B 27/34 (2013.01); C08G 69/14 (2013.01); C08G 69/34 (2013.01); C08G 69/36 (2013.01); C08L 77/08 (2013.01); Y02A 40/25 (2018.01)]

16 Claims

1. An agricultural film comprising: at least one copolyamide prepared by polymerizing the following components:

(A) 60% to 80% by weight of at least one lactam, and

(B) 20% to 40% by weight of a monomer mixture (M) comprising the following components:

(B1) at least one C₃₂-C₄₀dimer acid, and

(B2) at least one C₄-C₁₂diamine,

wherein:

percentages by weight of components (A) and (B) are each based on the sum total of the percentages by weight of components (A) and (B); and

the copolyamide has a viscosity number of from 212 to 280 ml/g, determined in a 0.5% by weight solution of the copolyamide in a mixture of phenol/o-dichlorobenzene in a weight ratio of 1:1.