WO2022196035A1 - Additif favorisant la biodégradation en milieu marin et composition de résine biodégradable en milieu marin le comprenant - Google Patents

Additif favorisant la biodégradation en milieu marin et composition de résine biodégradable en milieu marin le comprenant Download PDF

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WO2022196035A1
WO2022196035A1 PCT/JP2021/048956 JP2021048956W WO2022196035A1 WO 2022196035 A1 WO2022196035 A1 WO 2022196035A1 JP 2021048956 W JP2021048956 W JP 2021048956W WO 2022196035 A1 WO2022196035 A1 WO 2022196035A1
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marine
biodegradation
seawater
promoting additive
resin composition
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Japanese (ja)
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豊 常盤
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株式会社グリーンテクノプラス
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/16—Nitrogen-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/49—Phosphorus-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L101/00—Compositions of unspecified macromolecular compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L101/00—Compositions of unspecified macromolecular compounds
    • C08L101/16—Compositions of unspecified macromolecular compounds the macromolecular compounds being biodegradable

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  • the present invention relates to a marine biodegradation promoting additive, a marine biodegradable resin composition, and a decomposition treatment method for a marine biodegradable polymer material/resin composition. More specifically, the present invention provides a marine biodegradation promoting additive characterized by containing a nitrogen compound and a phosphorus compound as active ingredients, a marine biodegradable resin composition containing a marine biodegradation promoting additive, and a marine biodegradable resin composition. The present invention relates to a decomposition treatment method for a degradable polymer material/resin composition.
  • plastic substitutes and recycling technologies are being developed, but they have problems such as high cost and deterioration of functionality. Furthermore, it is said that fine plastics such as fibrous, granular, and film-like microplastics with a size of 5 mm or less pose a threat to marine ecosystems.
  • PCL polypolycaprolactone
  • PES polybutylene succinate
  • PBSA polybutylene adipate
  • PLA polylactic acid
  • PEC polyester carbonate
  • Mitsui Chemicals, Inc. discloses polyamino acid (polyaspartic acid, polyglutamic acid, polylysine, polysuccinimide) as a biodegradation accelerator in Japanese Patent Laid-Open No. 2001-270793 "Biodegradation accelerator and biodegradation method". It is disclosed that decomposition is accelerated when added to industrial waste and compost. In JIS K0102, when measuring the BOD (Biochemical Oxygen Demand) of industrial wastewater, etc., about 10% of urban wastewater is added as a microbial inoculum, and general nutrients necessary for the growth of microorganisms are added.
  • BOD Biochemical Oxygen Demand
  • Kaneka Corporation and AIST conducted a BOD test (27°C, 28 days) using seawater from the sea area of Osaka Nanko, and found that a microorganism-derived They reported that the copolymer (PHBHH) was degraded by 31%, but no oxygen absorption due to biodegradation was observed for PBS, PBSA and PLA.
  • biodegradable plastics do not biodegrade in seawater.
  • PHB and its copolymers are reported to decompose in specific sea areas such as Tokyo Bay and the Seto Inland Sea, which are highly polluted and have a relatively large number of microorganisms.
  • biodegradation in order to solve the problem of marine plastic litter, biodegradation is carried out not only in sea areas near urban areas, but also in tropical and subtropical coastal sea areas where many coral reefs are distributed and in open ocean seawater such as subtropical circulation currents.
  • a marine biodegradation promoting additive, a marine biodegradable resin composition, and a decomposition treatment method for a marine biodegradable polymer material/resin composition are provided for rapid biodegradation of marine biodegradable materials.
  • the present invention provides a marine biodegradation-promoting additive characterized by containing a nitrogen compound and a phosphorus compound as active ingredients, a marine biodegradable resin composition containing the marine biodegradation-promoting additive, and a marine biodegradation-promoting additive. It relates to a method for decomposing biodegradable materials in seawater using
  • Biodegradable materials include natural materials and artificially chemically synthesized materials. Carbohydrates, peptides, fats, nucleic acids, lignin and the like are typical examples of natural materials. Each of them is composed of low molecular weight substances such as monosaccharides, amino acids, fatty acids, monohydric to polyhydric saturated/unsaturated alcohols, starch, cellulose, chitin, carrageenan, xanthan gum, glucomannan, guar gum, Polysaccharides such as spinogum, locust bean gum, agar, pectic acid and their chemical modifications, polyesters such as suberin, cutin and polyhydroxyalkanoates, proteins such as silk, wool, gluten, collagen, gelatin, elastin and keratin and their There are high molecular weight ones such as chemically modified products. Natural biodegradable materials include those that exhibit hydrophilicity and those that exhibit hydrophobicity.
  • Examples of chemically synthesized materials include various artificially chemically synthesized low-molecular-weight compounds whose biodegradability is recognized in the "Law Concerning the Examination and Regulation of Manufacture, etc. of Chemical Substances" (Chemical Substances Control Law).
  • an artificially chemically synthesized polymer material the biodegradability evaluation method for soil, activated sludge, anaerobic sludge, compost, etc.
  • polyesters include polyesters composed of aliphatic dicarboxylic acids and aliphatic diols, polyesters composed of hydroxycarboxylic acids, polyesters composed of lactones such as caprolactone and propiolactone, and acid anhydrides.
  • PHB polyhydroxybutyric acid
  • PCL polycaprolactone
  • PBS polybutylene succinate
  • PBSA polybutylene adipate
  • PLA polylactic acid
  • copolymers of aromatic polyesters such as polyethylene terephthalate and aliphatic polyesters, but not limited to these.
  • polyamides examples include polyamides composed of aliphatic dicarboxylic acids and aliphatic diamides, polyamides composed of hydroxyamides, polyamides composed of aliphatic lactams, and various amino acid polymers. Specific examples include aliphatic polyamides such as polyamide 4, polyamide 6, polyamide 4,6, polyamide 11 and polyamide 12, and ⁇ -polyamino acids such as ⁇ -polyalanine and ⁇ -polyglutamic acid, but are limited to these. not something to do.
  • polyurethanes examples include polyurethanes, aliphatic polycarbonates, copolymers of aliphatic polyesters and aromatic polyesters or polyamides, aliphatic polyesters containing vinyl bonds, polyesters containing polyethers and ether bonds, and the like.
  • Other examples include a copolymer polymer in which two or more types of polymers are chemically bonded, and a polymer blend in which two or more types of polymers are physically mixed.
  • biodegradable hydrophilic polymer materials include polyglutamic acid, polylysine, polyaspartic acid, polyethylene glycol (PEG), polyvinyl alcohol (PVA), polymalic acid, polyglyceric acid, and copolymers thereof.
  • ⁇ -polyglutamic acid and ⁇ -polylysine are also natural macromolecules produced by microorganisms.
  • hydrophilic polyesters using various sugars (sucrose, glucose, etc.) and sugar alcohols (glycerol, erythritol, sorbitol, maltitol, xylitol, etc.).
  • biodegradable hydrophilic polymer materials include sanitary products, paper coating agents, agricultural and gardening materials, civil engineering and construction materials, as well as coated paper (posters, calendars, magazine gravure, insert advertisements, etc.). etc.), antifouling agents added to paints, etc., and dispersants for pigments.
  • Another field in which the use of marine biodegradable materials is expected is marine biofouling prevention paints for preventing marine organisms from adhering to ship bottoms, fishing nets, aquaculture substrates, buoys, and seawater structures.
  • non-biodegradable high-molecular-weight polyacrylic acid-based polymers have been widely used as antifouling agents and dispersants for pigments, but there are concerns about their impact on the environment.
  • biodegradable low- to medium-molecular-weight polyacrylic acid (Na salt)-based materials and alternatives to polyacrylamide, polyvinylpyrrolidone, polypropylene glycol, and polybutylene glycol.
  • Examples of marine biodegradation accelerator additives include inorganic and organic nitrogen compounds and phosphorus compounds in addition to ammonium sulfate and potassium dihydrogen phosphate. Also included are compounds containing both nitrogen and phosphorus.
  • inorganic nitrogen compounds include various ammonium salts such as ammonium sulfate, ammonium chloride and ammonium nitrate
  • organic nitrogen compounds include various amino acids and derivatives thereof, polymers of various amino acids, peptides, proteins, and urea. but not limited to these.
  • Inorganic phosphorus compounds include various phosphates such as sodium dihydrogen phosphate, disodium hydrogen phosphate and dipotassium hydrogen phosphate, and various polymers such as polyphosphoric acid.
  • Organic phosphorus compounds include various alkyl and alkenyl compounds. Phosphate, sugar phosphate such as phytic acid, yeast extract, peptone, nucleic acid, etc., but not limited to these.
  • Compounds containing both nitrogen and phosphorus include inorganic compounds such as ammonium dihydrogen phosphate and diammonium hydrogen phosphate, nucleic acids such as ribonucleic acid and deoxyribonucleic acid, yeast extract, meat extract, seaweed extract, Extracts of microorganisms, animals and plants such as peptone, tryptone, etc. can be cited, but the examples are not limited to these.
  • the marine biodegradation-enhancing additive may be used in a state of being dissolved or dispersed in a hydrophilic or lipophilic liquid, sol, or gel, in addition to being in the form of powder or pellets.
  • marine biodegradation-promoting additives are mixed with natural or chemically synthesized low-molecular-weight, high-molecular materials, resins, etc., and processed into powders, granules, pellets, fibers, rods, films, and plates to produce various products. It can also be used by melting and mixing with plastic products or the like.
  • the marine biodegradable resin composition of the present invention may optionally contain a pigment, an antioxidant, an antistatic agent, a delustering agent, and a degrading agent for the purpose of improving functionality or adding new functions.
  • Inhibitors, fluorescent whitening agents, UV absorbers, UV stabilizers, lubricants, fillers, carbon black, thickeners, chain extenders, cross-linking agents, crystal nucleating agents, plasticizers, stabilizers, viscosity stabilizers, etc. can be added in any proportion. Specific examples include talc, boron nitride, calcium carbonate, magnesium carbonate, and titanium oxide.
  • the marine biodegradable resin composition of the present invention can also be prepared by heating, melting and mixing the marine biodegradation promoting additive and the biodegradable polymer material.
  • the present invention provides a promising technology for solving the marine debris problem.
  • biodegradable plastics but also glucose and amino acids are hardly decomposed in a short period of time in sea areas where nitrogen and phosphorus are deficient.
  • marine biodegradation-promoting additives that can supply appropriate amounts of nitrogen and phosphorus to seawater
  • biodegradable plastics that are mixed with marine biodegradation-promoting additives that decompose at a much faster rate
  • organic waste in seawater are three technologies for efficiently decomposing substances with microorganisms. Nitrogen and phosphorus are also scarce in the Pacific Ocean, Indian Ocean, and Atlantic Ocean, and the three technologies of the present invention are considered to have a wide range of application.
  • FIG. 1 Schematic diagram showing the configuration of a BOD measurement device in which a rubber holder containing a carbon dioxide gas absorbent and a pressure center for oxygen are set in a brown glass bottle.
  • FIG. 1 is a schematic diagram showing the configuration of a BOD measuring device.
  • a pressure sensor that detects the amount of oxygen consumed from changes in pressure and displays it in ppm.
  • a rubber holder that doubles as a packing between the bottle and the pressure sensor is set at the mouth of the bottle.
  • the holder contains soda lime that absorbs the carbon dioxide produced by the biodegradation of the test sample.
  • the decomposition rates of the tested samples are the theoretical oxygen demand (ThOD) determined assuming that carbon C, hydrogen H, nitrogen N and sulfur S are converted to carbon dioxide CO2, water H2O, nitrate HNO3 and sulfur oxide SO3 respectively. is 100%.
  • Glucose was selected as a representative of natural sugars, and pyrupic acid, glycine and methionine were selected as representative natural organic substances of the ocean, and biodegradation tests were conducted using seawater. Seawater was collected at Zanpa Beach, Yomitan Village, Okinawa Prefecture on February 1, 2020, and was used from the day after collection.
  • a marine biodegradation promoting additive a mixture of ammonium sulfate (reagent special grade) and potassium dihydrogen phosphate (reagent special grade) in a weight ratio of 5:1 was finely pulverized in an agate bowl (hereinafter referred to as marine biodegradation promoting additive NP) was used.
  • One group added 40 mg each of glucose, pyruvate, glycine and methionine to each BOD bottle containing 250 ml of seawater, and the other group added 40 mg each of glucose, pyruvate, glycine and methionine and added marine biodegradation enhancing additive NP.
  • the biodegradability was measured at 27° C. for 14 days in two groups, each containing 4 mg. The results are shown in Table 1.
  • the BOD value was 0 ppm and no oxygen consumption was observed in the case of only seawater or in the case of adding marine biodegradation promoting additive NP to seawater. Also, oxygen consumption was not observed when glucose, pyruvate, glycine and methionine were added to seawater, respectively.
  • Biodegradable plastic materials include poly-D-3-hydroxybutyric acid (PHB) powder produced by microorganisms (manufactured by Aldrich) and chemically synthesized polycaprolactone (PCL) powder (Tone) produced by Dow Chemical (formerly Union Carbide).
  • P-767P poly-L-lactic acid chemically synthesized using p-toluenesulfonic acid as a catalyst and a copolymer of L-lactic acid (or D-lactic acid) and D-3-hydroxybutyric acid (D-3HB) were selected. , conducted a biodegradation test in seawater.
  • the molecular weights of the copolymer of lactic acid and D-3HB and poly-L-lactic acid were measured by gel permeation chromatography (GPC).
  • GPC gel permeation chromatography
  • Seawater was collected at Nakagusuku Bay in Uruma City, Okinawa Prefecture on November 6, 2020, and was used from the day of collection.
  • the marine biodegradation promoting additive the solid marine biodegradation promoting additive NP used in Example 1 was used.
  • Each BOD bottle containing 250 ml of seawater was chemically polymerized from PHB powder, PCL powder, poly-L-lactic acid, L-lactic acid and D-3-hydroxybutyric acid (D-3HB) at molar ratios of 95:5 and 90:10. and a group in which 40 mg each of a copolymer chemically polymerized from D-lactic acid and D-3HB at a molar ratio of 95:5 were added, and in addition to the polymer, the same marine biodegradable additive NP as in Example 1
  • the biodegradability was measured at 27°C for 11 days by dividing into two groups to which 4 mg of each was added. The results are shown in Table 2.
  • PHB film Poly-D-3-hydroxybutyric acid (PHB) film, three types of starch/PCL (ToneP-767P) blend (powder), and polyester carbonate were selected as biodegradable plastic materials, and biodegradation tests were conducted using seawater. rice field.
  • a PHB film was prepared by dissolving PHB powder (manufactured by Aldrich) in chloroform, pouring the solution into a flat-bottom petri dish having a diameter of 10 cm, covering the petri dish with a lid, and removing the chloroform with a fume hood for 3 days.
  • Starch/PCL blends include a blend of starch and PCL (50:50 weight ratio), a blend of acetylated starch (2.5% or less acetyl groups) and PCL (50:50 weight ratio), and a hydroxypropylated starch (50:50 weight ratio).
  • a blend of hydroxypropyl groups (7.0% or less) and PCL (weight ratio 50:50) was used.
  • Copolymers of polybutylene succinate and polybutylene carbonate (carbonate bond contents of 11.0%, 14.8% and 17.1%) were used as polyester carbonates (manufactured by Mitsubishi Gas Chemical Co., Ltd.).
  • Seawater was collected at Nakagusuku Bay in Uruma City on October 19, 2020 and used from the day of collection.
  • the marine biodegradation promoting additive the solid substance used in Example 1 (marine biodegradation promoting additive NP) was dissolved in distilled water to prepare a 1% solution for use.
  • PHB powder manufactured by Aldrich
  • polyamide 4 weight average molecular weight Mw 5,350
  • Polyamide 4 was synthesized from 2-pyrrolidone using butyryl chloride as an initiator, and the molecular weight was measured by gel permeation chromatography (GPC).
  • GPC gel permeation chromatography
  • Yeast extract manufactured by Becton Dickinson
  • Yeast extract from Becton Dickinson contains 10.9% nitrogen and 3.27% phosphate (BD Bionutrients Technical Manual 3rd Edition, 2007). The results are shown in Table 4. Note that the decomposition rate is a value obtained by assuming that the theoretical oxygen demand (ThOD) of PHB and polyamide 4 is 100%.
  • Seawater was collected at Kin Bay in Uruma City on April 6, 2020, and was used from the day of collection for 7 days.
  • ⁇ -polyglutamic acid ( ⁇ -PGA, Mw 200,000 to 500,000) manufactured by Wako Pure Chemical Industries, Ltd. and ⁇ -polylysine (Mw 3,500 to 4,500) manufactured by Carbosynth (CAB) were selected as water-soluble polyamides, and A biodegradability test was performed. The same marine biodegradation promoting additive as in Example 4 was used. The results are shown in Table 5.
  • the decomposition rate is a value obtained by setting the theoretical oxygen demand (ThOD) of ⁇ -PGA and ⁇ -polylysine as 100%. Seawater was collected at Kin Bay, Uruma City on April 29, 2020 and used for measurements from May 1 to 21.
  • the biodegradability was measured at 27° C. for 21 days in two groups of spiked groups. The results are shown in Table 5. Degradation of ⁇ -PGAP and ⁇ -polylysine was observed when marine biodegradation promoting additives were added.
  • BAK2195 a copolymer of polyamide 6,6 and adipic acid-butanediol-diethylene glycol
  • BAK1095 a copolymer of polyamide 6 and polybutylene adipate developed by Bayer AG of Germany are used. selected and tested for biodegradability in seawater. At the same time, a seawater biodegradability test was conducted on BIOPOL, a copolymer (PHBV) of D-3-hydroxybutyric acid and D-3-hydroxyvaleric acid developed by Zeneca (formerly I.C.I.). rice field. A biodegradability test was performed on PHBV (8%) with a D-3-hydroxyvaleric acid content of 8 mol%. The same marine biodegradation promoting additive as in Example 4 was used. Seawater was collected at Kin Bay, Uruma City on April 29, 2020, stored in a dark place, and then used for measurements for 21 days from May 8.
  • Two groups one group added 40 mg each of BAK2195, BAK1095 and PHBV to each BOD bottle containing 250 ml of seawater, and the other group added 40 mg each of BAK2195, BAK1095 and PHBV and added 0.4 ml each of marine biodegradation promoting additives.
  • the biodegradability test was conducted while stirring at 27°C for 21 days. The results are shown in Table 6.
  • the decomposition rate of BAK2195 and BAK1095 the BOD value, which is the amount of oxygen consumed during decomposition, was expressed in ppm because the proportion of polyamide and polyester was unknown.
  • the marine biodegradation promoting additive NP used in Example 1 was added so as to be 0.0%, 0.3%, 3.0%, 13.0%, and 42.9% with respect to the weight of the PHB powder, and each was made of five glass Then, 10 ml of chloroform was added, and the reaction tube was fitted with a coiled tube condenser and refluxed at 60° C. for 16 hours with stirring. After cooling, the solution in the polymerization tube was poured into a flat-bottom petri dish having a diameter of 10 cm, the petri dish was covered, and chloroform was removed under a draft for 3 days.
  • the film of the PHB resin composition containing the marine biodegradation promoting additive produced in each petri dish was cut into about 1 cm2, and the film containing 40 mg of PHB was placed in each BOD bottle and biodegraded by seawater. did the test.
  • Seawater was collected from Nakagusuku Bay in Uruma City on September 25, 2020 and used from the day of collection.
  • ammonium phosphate finely ground in an agate bowl was added as a new marine biodegradation-promoting additive at 0.5% and 5.0% with respect to the weight of the PHB powder, and the marine biodegradation-promoting additive was added in the same manner.
  • a film of the PHB resin composition containing was prepared.
  • Each film containing 40 mg of PHB was placed in a BOD bottle and subjected to a biodegradation test with seawater while stirring at 27°C for 7 days. Further, 40 mg of filter paper (Advantech 5A) alone as cellulose was placed in a BOD bottle without adding the marine biodegradation promoting additive NP, and a similar biodegradation test with seawater was conducted.
  • the decomposition rate is a value determined assuming that the theoretical oxygen demand (ThOD) of PHB is 100%.
  • the PHB film without the marine biodegradation-promoting additive NP used in Example 1 was not biodegraded at all in 7 days, whereas additive NPs of 0.3%, 3.0%, 13.0% and 42.9% showed no biodegradation in 7 days. 6.3%, 34.0%, 80.2%, and 83.2% biodegraded respectively in days.
  • films of PHB resin compositions containing 0.5% and 5.0% of finely divided ammonium phosphate (AP) as a marine biodegradation-promoting additive were biodegraded by 10.4% and 38.8%, respectively, in 7 days.
  • the filter paper had a degradation rate of 0% in 7 days without the marine biodegradation promoting additive.
  • Bionol PBSA (#3020) manufactured by Showa Polymer Co., Ltd., and PCL, a film containing no marine biodegradation promoting additive NP used in Example 1 and a film containing 13% were prepared. Film preparation was carried out in the same manner as in Example 7. For the prepared PHB film, PBSA film, and PCL film, 40 mg without marine biodegradation promoting additive and 46 mg with 13% additive were placed in BOD bottles, respectively, and seawater biodegradation tests were conducted.
  • the decomposition rate is a value obtained by setting the theoretical oxygen demand (ThOD) of each of PHB, PBSA and PCL to 100%.
  • ThOD is obtained by assuming that the A (adipic acid) content of PBSA is 10 mol %.
  • Each prepared film was placed in a BOD bottle so that the amount of each film contained was 40 mg when the marine biodegradation promoting additive NP was not contained, and 44.4 mg when it contained 10%, and a biodegradation test by seawater was performed. Seawater was collected at Nakagusuku Bay, Uruma City on December 16, 2020 and used from the day of collection.
  • the decomposition rate is a value obtained based on the theoretical oxygen demand (ThOD) of PHBV as 100%.
  • the PHBV (6.7%) film, PHBV (15.6%) film, Easter Bio film, Mater Bi film, BAK1095 film and BAK2095 film without the marine biodegradation promoting additive NP used in Example 1 were heated at 27°C, 21 It did not biodegrade at all in days.
  • the degradation rates of PHBV (6.7%) and PHBV (15.6%) films containing marine biodegradation promoting additive NP were 80.4% and 69.1%, respectively.
  • Glucose a natural sugar
  • the biodegradable material was decomposed in seawater by changing the concentration of glucose to 0 ppm, 20 ppm, 40 ppm, 80 ppm, and 160 ppm.
  • Seawater was collected from Nakagusuku Bay in Uruma City on November 24, 2020 and used from the day of collection. The same marine biodegradation promoting additive as in Example 1 was used. Ammonium sulfate and monopotassium phosphate were used at concentrations of 20 ppm and 4 ppm, respectively, as nitrogen and phosphorus sources. Lake water, river water, ground water (spring water), tap water, inorganic salt medium, etc. can also be used instead of sea water.
  • PHB poly(R)-3-hydroxybutyric acid
  • a freshly prepared liquid marine biodegradation enhancing additive was added to obtain the concentrations of ammonium sulfate and potassium dihydrogen phosphate shown in Table 11. and reacted at 27°C for 8 days.
  • the biodegradation rate of PHB after 8 days was 82% or more when ammonium sulfate was 20 ppm and monopotassium phosphate (monopotassium dihydrogen phosphate) was 4 ppm or more.
  • the decomposition rate is a value determined assuming that the theoretical oxygen demand (ThOD) of PHB is 100%.

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  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
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  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
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Abstract

La présente invention aborde le problème de la réalisation d'un additif favorisant la biodégradation en milieu marin afin de résoudre le problème des déchets marins tels que les déchets plastiques, etc. et pour l'utiliser efficacement afin d'empêcher efficacement la pollution marine. La solution selon la présente invention est caractérisée par : un additif favorisant la biodégradation en milieu marin contenant un composé d'azote et un composé de phosphore ; une composition de résine biodégradable en milieu marin comprenant ledit additif ; et un procédé d'ajout d'un composé d'azote et d'un composé de phosphore pour dégrader une composition de résine biodégradable. Ce procédé ne nécessite pas l'utilisation de micro-organismes isolés spécifiques, d'eau de mer spécifique présentant une concentration élevée de micro-organismes, etc.
PCT/JP2021/048956 2021-03-16 2021-12-28 Additif favorisant la biodégradation en milieu marin et composition de résine biodégradable en milieu marin le comprenant WO2022196035A1 (fr)

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Citations (5)

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JPH09316438A (ja) * 1996-05-28 1997-12-09 Giyojiyou Yudaku Higai Kiyuusai Kikin 油処理剤
JPH11279201A (ja) * 1998-03-31 1999-10-12 Japan Tobacco Inc 生分解性セルロースアセテート成形品およびたばこ用フィルタープラグ
JP2003154352A (ja) * 2001-09-10 2003-05-27 Fuji Photo Film Co Ltd 微生物による汚染土壌修復方法
JP2005334727A (ja) * 2004-05-25 2005-12-08 Tosoh Corp 油汚染土壌の浄化法
JP2019166703A (ja) * 2018-03-23 2019-10-03 株式会社カネカ ポリ（３−ヒドロキシブチレート）系樹脂シート

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* Cited by examiner, † Cited by third party
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EP3960815A1 (fr) * 2018-03-30 2022-03-02 Mitsubishi Chemical Corporation Article moulé, feuille et récipient, et article tubulaire, paille, coton-tige, et bâton pour ballons
JP6675690B1 (ja) * 2018-10-26 2020-04-01 株式会社Ｔｂｍ 生分解性樹脂成形品、及びその製造方法並びにこれに用いられるペレット体
JPWO2021131181A1 (fr) * 2019-12-27 2021-07-01

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09316438A (ja) * 1996-05-28 1997-12-09 Giyojiyou Yudaku Higai Kiyuusai Kikin 油処理剤
JPH11279201A (ja) * 1998-03-31 1999-10-12 Japan Tobacco Inc 生分解性セルロースアセテート成形品およびたばこ用フィルタープラグ
JP2003154352A (ja) * 2001-09-10 2003-05-27 Fuji Photo Film Co Ltd 微生物による汚染土壌修復方法
JP2005334727A (ja) * 2004-05-25 2005-12-08 Tosoh Corp 油汚染土壌の浄化法
JP2019166703A (ja) * 2018-03-23 2019-10-03 株式会社カネカ ポリ（３−ヒドロキシブチレート）系樹脂シート

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