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US 11,696,533 B2Granted
Agricultural film comprising a copolyamide of a diamine, a dimer acid and a lactam
AssigneeBASF SE
InventorsRolf Minkwitz, Frank Reil, Martina Schoemer, Johannes Klaus Sprafke
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Abstract
The present invention relates to an agricultural film (AF) comprising at least one copolyamide, wherein the copolyamide has been prepared by polymerizing at least one lactam and a monomer mixture (M). The present invention further relates to a process for producing the agricultural film (AF) and to the use of the agricultural film (AF) as mulch film, as silage film, as greenhouse film or as silo film.
Claims16
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-C40 dimer acid, and
- (B2) at least one C4-C12 diamine,
- 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.
6 more elements
Dependencies are inferred from the claim text.