Method of promoting the growth of plants
AssigneeDaicel Corporation
InventorsKazunobu Tanaka, Masahiko Kusumoto, Shoji Watanabe
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Abstract
A method of promoting the growth of plants which comprises applying to the surface of a plant growth medium to be exposed to a source of ultraviolet radiation a light-degradable mulching film for agricultural use, comprising a resin composition, whose resin components consist essentially of (1) from 5 to 50 percent by weight of polyisobutylene oxide resin, (2) the balance of a second resin component selected from the group consisting of at least one polyolefin resin and a mixture of at least one polyolefin resin and at least one polydiene resin. The resin composition can be made into a mulching film which, when exposed to the sunlight, photolytically degrades into a pulverized condition within a selected period of time.
Claims10
A method of promoting the growth of plants which comprises applying to the surface of a plant growth medium to be exposed to a source of ultraviolet radiation a pre-formed light-degradable mulching film for agricultural use, said film being made of a resin composition whose resin components consist essentially of
- (1) from 5 to 50 percent by weight of polyisobutylene oxide resin having a reduced specific viscosity of at least about 0.8 dl/g. determined at 120.degree. C in o-dichlorobenzene,
- (2) the balance is a second resin component selected from the group consisting of (a) at least one polyolefin resin and (b) a mixture of at least one polyolefin resin and at least one polydiene resin,
- said film being capable of being transformed to a friable or pulverized form by the action of sunlight in from 15 to 90 days.
Dependencies are inferred from the claim text.