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Last Updated: October 21, 2021

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Claims for Patent: 4,917,820

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Summary for Patent: 4,917,820
Title: Ethylene removal agent, postharvest preservation agent and deodorant
Abstract:Disclosed herein is an ethylene removal agent, a postharvest preservation agent to keep freshness of vegetables, fruits and flowers, and a deodorant comprising (A) at least one compound selected from the group consisting of phosphoric acid, phosphorous acid, hypophosphorous acid, hypochlorous acid and salts of these acids, and (B) specified metal(s) or compound(s) of metal.
Inventor(s): Matsumoto; Mutsumi (Gunma, JP), Ogawa; Masanobu (Gunma, JP)
Assignee: Nippon Kayaku Kabushiki Kaisha (Tokyo, JP)
Application Number:07/317,140
Patent Claims:1. A method for removing ethylene from an ethylene-generating source, which method comprises placing in proximity to said source a composition which comprises (A) at least one compound selected from the group consisting of phosphoric acid, phosphorous acid, hypophosphorous acid, hypochlorous acid an salts of said acids and (B) at least one compound selected from the group consisting of oxides, carbonates, sulfates and peroxides of cobalt, nickel, titanium, zirconium, vanadium, chromium, molybdenum, tungsten, manganese, copper, silver, zinc, germanium, tin, lead, platinum, palladium, magnesium, calcium, strontium, and barium, Fe.sub.2 O.sub.3, peroxides of alkali metals, and alkali metal salts or alkaline earth metal salts of peroxocarbonic acid or peroxoboric acid.

2. A method for preserving harvested fruits, vegetables or flowers, which method comprises placing in proximity to said fruits, vegetables or flowers a composition which comprises (A) at least one compound selected from the group consisting of phosphoric acid, phosphorous acid, hypophosphorous acid, hypochlorous acid and salts of said acids and (B) at least one compound selected from the group consisting of oxides, carbonates, sulfates, and peroxides of cobalt, nickel, titanium, zircomium, vanadium, chromium, molybdenmm, tungsten, manganese, copper, silver, zinc, germanium, tin, lead, platinum, palladium, magnesium, calcium, strontium, and barium, Fe.sub.2 O.sub.3, peroxides of alkali metals and alkali metal salts or alkaline earth metal salts of peroxocarbonic acid or peroxoboric acid.

3. A method for deodorizing a gas which comprises odorous substances, which method comprises bringing said gas into contact with a composition which comprises (A) at least one compound selected from the group consisting of phosphoric acid, phosphorous acid, hypophosphorous acid and hypochlorite and (B) at least one compound selected from the group consisting of oxides and peroxides of iron, nickel, titanium, zirconium, vanadium, chromium, molybdenum, tungsten, copper, silver, zinc, germanium, tin, lead, platinum, palladium, magnesium, calcium, strontium, and barium, peroxides of alkali metals, and alkali metal salts or alkaline earth metal salts of peroxocarboniacid or peroxoboric acid.

4. A method for deodorizing an odor-generating source, which method comprises adding to said source a composition which comprises (A) at least one compound selected from the group consisting of phosphoric acid, phosphorous acid, hypophosphorous acid and hypochlorite and (B) at least one compound selected from the group consisting of oxides and peroxides of iron, nickel, titanium, zirconium, vanadium, chromium, molybdenum, tungsten, copper, silver, zinc, germanium, tin, lead, platinum, palladium, magnesium, calcium, strontium, and barium, peroxides of alkali metals and alkali metal salts or alkaline earth metal salts of peroxocerbonic acid or peroxoboric acid.

5. A method according to claim 1, 2, 3 or 4, wherein the weight ratio of the component (A) to the compound (B) is in the range of 1:0.001-99.

6. A method according to claim 1, 2, 3 or 4, wherein the weight ratio of the component (A) to the component (B) is in the range of 1:0.001-30.

7. A method according to claim 1 or 2, wherein the component (A) is at least one compound selected from the group consisting of phosphoric acid, hypophosphorous acid and calcium hypochlorite.

8. A method according to claim 1 or 2, wherein the component (B) is at least one compound selected from the group consisting of oxides or peroxides of titanium, zirconium, copper, zinc, germanium, tin, magnesium, calcium and barium, Fe.sub.2 O.sub.3, peroxides of alkali metals, and alkali metal salts or alkaline earth metal salts or peroxocarbonic acid or peroxoboric acid.

9. A method according to claim 1 or 2, wherein the component (B) is at least one compound selected from the group consisting of Fe.sub.2 O.sub.3, zinc oxidide and calcium peroxide.

10. A method according to claim 1 or 2, wherein the component (A) is at least one compound selected from the group consisting of phosphoric acid, hypophosphorous acid, and calcium hypochlorite and the component (B) is at least one compound selected from the group consisting of oxides or peroxides of titanium, zirconium, copper, zinc, germanium, tin, magnesium, calcium and barium, Fe.sub.2 O.sub.3, peroxides of alkali metals, and alkali metal salts or alkaline earth metal salts of peroxocarbonic acid or peroxoboric acid.

11. A method according to claim 10, wherein the component (B) is at least one compound selected from the group consisting of Fe.sub.2 O.sub.3, zinc oxide and calcium peroxide.

12. A method according to claim 3 or 4, wherein the component (A) is phosphoric acid.

13. A method according to claim 3 or 4, wherein the component (B) is at least one compound selected from the group consisting of oxides and peroxides of iron, titanium, zirconium, copper, zinc, germanium, tin, magnesium, calcium and barium, peroxides of alkali metals, and alkali metal salts or alkaline earth metal salts of peroxocarbonic acid or peroxoboric acid.

14. A method according to claim 3 or 4, wherein the component (B) is at least one compound selected from the group consisting of Fe.sub.2 O.sub.3, titanium oxide and calcium peroxide.

15. A method according to claim 3 or 4, wherein the component (A) is phosphoric acid and the component (B) is at least one compound selected from the group consisting of oxides and peroxides of iron, titanium, zirconium, copper, zinc, germanium, tin, magnesium, calcium and barium, peroxides of alkaline metals, and alkali metal salts or alkaline earth metal salts of peroxocarbonic acid or peroxoboric acid.

16. A method according to claim 15, wherein the component (B) is at least one compound selected from the group consisting of Fe.sub.2 O.sub.3, titanium oxide and calcium, peroxide.

17. A method according to claim 1, 2, 3 or 4, wherein the component (A) and the component (B) have been carried on a carrier.

18. A method according to claim 17, wherein said carrier is at least one carrier selected from the group consisting of silica, alumina, silica-alumina, natural zeolite, synthetic zeolite, diatomaceous earth, Kanuma earth, clays and active carbon.

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