	US 12,280,409 B2
	Method for preventing the diffusion of soil fumigant
Keisuke Morikawa, Houston, TX (US); Pablo Garcia, Houston, TX (US); and Levi Neufeld, Houston, TX (US)
Assigned to KURARAY CO., LTD., Okayama (JP)
Filed by KURARAY CO., LTD., Okayama (JP)
Filed on Apr. 11, 2022, as Appl. No. 17/718,176.
Claims priority of provisional application 63/173,612, filed on Apr. 12, 2021.
Prior Publication US 2022/0331849 A1, Oct. 20, 2022
Int. Cl. B09C 1/08 (2006.01); A01M 13/00 (2006.01); C09K 17/52 (2006.01); D21H 19/40 (2006.01); D21H 19/60 (2006.01)

CPC B09C 1/08 (2013.01) [A01M 13/003 (2013.01); C09K 17/52 (2013.01); D21H 19/40 (2013.01); D21H 19/60 (2013.01); B09C 2101/00 (2013.01)]

21 Claims

1. A method of reducing diffusion of soil fumigant, comprising:

covering fumigated soil with a barrier paper,

wherein the barrier paper comprises (i) a paper or paper base material, and (ii) a polyvinyl alcohol layer comprising a polyvinyl alcohol modified with carboxylic acid or a salt thereof, and the barrier paper excludes a layer containing any additional cellulose.