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US 6,990,913 B2Granted
Mulching process
AssigneeMaxver S.R.L.
InventorAlberto Pedrazzoli
Life of this patent
Estimating the term…
Abstract
The soil mulching process, includes the following stages: mixing together at least two liquid starting substances able to react together to give rise, within a determined time period, to an inert solid final substance while still in the liquid state, pouring the obtained mixture onto the soil surface in a quantity such as to obtain on the soil surface, when the reaction between the components is complete, a layer of the solid substance of a thickness which prevents light passage through it.
Claims5
A soil mulching process, comprising the following stages:
- mixing together at least two liquid starting substances able to react together to give rise, within a determined time period, to an inert solid final substance;
- while still in the liquid state, arranging the obtained mixture onto the soil surface in a quantity such as to obtain on the soil surface, when the reaction between the components is complete, a layer of said solid substance of a thickness which substantially prevents light passage through said solid substance;
- wherein two of the liquid starting substances are a hydrophilic polyurethane prepolymer obtained, by reacting polyols with diisocyanates, and a compound containing active hydrogen.
Dependencies are inferred from the claim text.