Vinylidene-chloride-based resin, wrap, casing, latex, binder, and method for producing said resin

Abstract

Provided are: a vinylidene-chloride-based resin reduced in environmental burden; a wrap, a casing, a latex, and a binder each including the resin; and a method for producing the resin.　The present invention relates to a vinylidene-chloride-based resin having the allocated property of being derived from renewable organic resources.

Description

Vinylidene chloride resin, wrap, casing, latex, binder, and method for producing said resin

[0001] The present invention relates to vinylidene chloride resins, wraps, casings, latexes, and binders containing the resins, and methods for making the resins.

[0002] Vinylidene chloride resins are widely used in food packaging wraps and casings because they have properties such as being impermeable to oxygen and moisture, having high adhesion, high heat resistance, and high transparency (Patent Document 1).

[0003] Conventionally, vinylidene chloride resins have been produced mainly from raw materials derived from fossil resources, and household wrap in particular has been collected and incinerated as combustible waste after use, with little consideration given to reducing the environmental impact, such as reducing the use of fossil resources or curbing greenhouse gas emissions.

[0004] International Publication No. 96 / 034050

[0005] The present invention has been made in view of the above problems, and an object of the present invention is to provide a vinylidene chloride resin that reduces the environmental impact, a wrap, a casing, a latex, and a binder that contain the resin, and a method for producing the resin.

[0006] The present inventors have found that the environmental load can be reduced by using a vinylidene chloride resin that is assigned the property of being derived from renewable organic resources, and have thus completed the present invention.

[0007] A first aspect of the present invention is a vinylidene chloride-based resin that has been assigned the property of being derived from renewable organic resources.

[0008] A second aspect of the present invention is a wrap comprising the vinylidene chloride resin according to the first aspect. A third aspect of the present invention is a casing comprising the vinylidene chloride resin according to the first aspect. A fourth aspect of the present invention is a latex comprising the vinylidene chloride resin according to the first aspect. A fifth aspect of the present invention is a binder comprising the vinylidene chloride resin according to the first aspect.

[0009] A sixth aspect of the present invention is a method for producing a vinylidene chloride-based resin according to the first aspect, comprising a step of polymerizing vinylidene chloride assigned a renewable organic resource-derived characteristic and / or vinyl chloride assigned a renewable organic resource-derived characteristic.

[0010] According to the present invention, it is possible to provide a vinylidene chloride resin with reduced environmental impact, a wrap, a casing, a latex, and a binder containing the resin, and a method for producing the resin.

[0011] In this specification, "vinylidene chloride resin assigned characteristics of being derived from renewable organic resources" refers to a vinylidene chloride resin produced by mixing raw materials derived from renewable organic resources in a process for producing a vinylidene chloride resin from raw materials derived from fossil resources, and to which characteristics of being derived from renewable organic resources have been assigned by the mass balance method, the book and claim method, or the like.

[0012] The "mass balance method" is a method defined in ISO 22095:2020, which refers to a method in which, when raw materials with certain characteristics (e.g., raw materials derived from renewable organic resources) are mixed with raw materials without such characteristics (e.g., raw materials derived from fossil resources) during the processing and distribution process from raw materials to products, the characteristics are allocated to a portion of the product in accordance with the input amount of the raw materials with the characteristics.

[0013] The vinylidene chloride resins and products containing the resins (wraps, casings, latex, and binders) of the present invention use raw materials assigned renewable organic resource-derived properties, thereby reducing the amount of fossil resource-derived raw materials used throughout the supply chain and achieving the effect of reducing environmental impact. Furthermore, by increasing the allocation amount for some vinylidene chloride resins and products containing the resins, the added value of vinylidene chloride resins and products containing the resins can be increased. This promotes utilization, resulting in a reduction in the amount of fossil resource-derived raw materials used and a reduction in environmental impact. Specific examples of the effect of reducing environmental impact include the effect of reducing GHG (Greenhouse Gas) emissions, which are an environmental impact indicator for reducing greenhouse gas emissions.

[0014] The GHG emission reduction rate of the vinylidene chloride resin is preferably 0.1% or more, more preferably 0.5% or more, and even more preferably 1% or more. The upper limit of the reduction rate is not particularly limited, but may be, for example, 20% or less, or 10% or less. The GHG emission reduction rate of the wrap is preferably 1% or more, more preferably 3% or more, even more preferably 4% or more, even more preferably 5% or more, particularly preferably 9% or more, and most preferably 10% or more. The upper limit of the reduction rate is not particularly limited, but may be, for example, 95% or less, 80% or less, or 60% or less. The GHG emission reduction rate of the casing is preferably 1% or more, more preferably 3% or more, even more preferably 4% or more, even more preferably 5% or more, particularly preferably 9% or more, and most preferably 10% or more. The upper limit of the reduction rate is not particularly limited, but may be, for example, 95% or less, 80% or less, or 60% or less. The GHG emission reduction rate of the latex is preferably 1% or more, more preferably 3% or more, even more preferably 4% or more, even more preferably 5% or more, particularly preferably 9% or more, and most preferably 10% or more. The upper limit of the reduction rate is not particularly limited, but may be, for example, 95% or less, 80% or less, or 60% or less. The GHG emission reduction rate of the binder is preferably 1% or more, more preferably 3% or more, even more preferably 4% or more, even more preferably 5% or more, particularly preferably 9% or more, and most preferably 10% or more. The upper limit of the reduction rate is not particularly limited, but may be, for example, 95% or less, 80% or less, or 60% or less.

[0015] In this specification, the GHG emission reduction rate of the vinylidene chloride resin, wrap, casing, latex, and binder is calculated by the following formula: GHG emission reduction rate (%) = [(B - A) / B] x 100, where A is the GHG emission amount calculated by the following method, and B is the GHG emission amount calculated by the following method when only naphtha derived from fossil resources is used as the raw material.

[0016] The GHG emissions of vinylidene chloride resin are calculated by calculating the GHG emissions (kgCO ) from the production of 1 kg of vinylidene chloride resin from raw materials (naphtha and / or bionaphtha). ２The GHG emissions from plastic wrap are calculated as the GHG emissions (kg CO ) over the entire supply chain, which is the sum of the GHG emissions (product of unit consumption and emission unit consumption) from the production of the vinylidene chloride resin contained in 1 kg of plastic wrap from raw materials (naphtha and / or bio-naphtha), the GHG emissions (product of unit consumption and emission unit consumption) from the production of each of the other compounding ingredients contained in 1 kg of plastic wrap from raw materials, and the GHG emissions from the processing of these compounding ingredients into 1 kg of plastic wrap to disposal (incineration). ２ eq). For example, if the compounding ingredients of a wrap are vinylidene chloride resin and plasticizer, the GHG emissions from the wrap are the sum of the product of the unit consumption and emission unit consumption of the vinylidene chloride resin contained in 1 kg of wrap, the product of the unit consumption and emission unit consumption of the plasticizer contained in 1 kg of wrap, and the GHG emissions from the processing of these compounding ingredients to disposal (incineration). The GHG emissions (kgCO ２ eq) is calculated in the same manner. These calculations were based on the "Basic Guidelines for Accounting for Greenhouse Gas Emissions throughout the Supply Chain" (Ver. 2.4, March 2022, Ministry of the Environment and Ministry of Economy, Trade and Industry) and references such as C. Moretti, et al., Resources, Conservation & Recycling, vol. 157, 104750-104762, (2020), Y. Kikuchi, et al., Process Safety and Environmental Protection, vol. 166, 693-703, (2022), R. Edwards, et al., JRC Science for Policy Report, Version 1d, (2019), Sarah A. Cashman, et al., Journal of Industrial Ecology, vol. 20, 1108-1121, (2015)), data provided by related businesses, and values ​​from the LCI database IDEA Version 3.2.0 (April 15, 2022, IDEA Lab, Safety Science Research Institute, National Institute of Advanced Industrial Science and Technology, National Research and Development Agency) were used.

[0017] <Vinylidene chloride resin> Vinylidene chloride resin is derived from renewable organic resources, which reduces the environmental impact.

[0018] The vinylidene chloride resin (hereinafter sometimes referred to as "PVDC") may be a homopolymer of vinylidene chloride, or a copolymer of 60% by mass or more and 98% by mass or less of vinylidene chloride and 2% by mass or more and 40% by mass or less of another monomer copolymerizable with vinylidene chloride. Examples of other monomers copolymerizable with vinylidene chloride include vinyl chloride; alkyl acrylate esters (alkyl group having 1 to 18 carbon atoms) such as methyl acrylate, ethyl acrylate, butyl acrylate, and lauryl acrylate; alkyl methacrylate esters (alkyl group having 1 to 18 carbon atoms) such as methyl methacrylate, butyl methacrylate, and lauryl methacrylate; vinyl cyanide such as acrylonitrile; aromatic vinyl such as styrene; vinyl esters of aliphatic carboxylic acids having 1 to 18 carbon atoms such as vinyl acetate; alkyl vinyl ethers having 1 to 18 carbon atoms; vinyl-polymerizable unsaturated carboxylic acids such as acrylic acid, methacrylic acid, maleic acid, and fumaric acid; and alkyl esters (including partial esters, alkyl group having 1 to 18 carbon atoms) of vinyl-polymerizable unsaturated carboxylic acids such as maleic acid, fumaric acid, and itaconic acid. More preferred is at least one selected from vinyl chloride, methyl acrylate, and lauryl acrylate, and even more preferred is vinyl chloride. The other monomer copolymerizable with vinylidene chloride may be used alone or in combination of two or more. The proportion of vinylidene chloride is more preferably 65% ​​by mass or more and 97% by mass or less, and even more preferably 70% by mass or more and 90% by mass or less. The proportion of the other monomer is more preferably 3% by mass or more and 35% by mass or less, and even more preferably 10% by mass or more and 30% by mass or less. When the proportion of the other monomer is 3% by mass or more, melt processability is unlikely to be reduced, while when the proportion of the other monomer is 35% by mass or less, gas barrier properties are unlikely to be reduced. Furthermore, two or more types of PVDC may be mixed to improve melt processability.

[0019] In a vinylidene chloride resin, the amount of components assigned renewable organic resource-derived characteristics is preferably 10% or more by mass, more preferably 20% or more, and even more preferably 25% or more. The upper limit of the component amount is not particularly limited and may be 100%, but may be, for example, 80% or less, 50% or less, or 30% or less. In this specification, the amount of components assigned renewable organic resource-derived characteristics in a vinylidene chloride resin is the sum of the values ​​obtained by multiplying the proportion of each monomer by the amount of each monomer assigned renewable organic resource-derived characteristics, and dividing the product by 100.

[0020] The renewable organic resource origin characteristic is preferably assigned based on the mass balance method or the book and claim method (defined in ISO 22095:2020), more preferably based on the mass balance method (defined in ISO 22095:2020). The mass balance method certification method is a third-party certification such as ISCC PLUS certification from the International Sustainability and Carbon Certification (ISCC), RSB Global Advanced Products certification from the Roundtable on Sustainable Biomaterials (RSB), or REDcert from the Renewable Energy Directive (RED). ２ Preferably it is based on authentication.

[0021] Examples of renewable organic resources include the resources described below in the process for producing vinylidene chloride resins.

[0022] <Method for Producing Vinylidene Chloride Resin> A method for producing a vinylidene chloride resin includes a step of polymerizing vinylidene chloride assigned with a characteristic of being derived from a renewable organic resource and / or vinyl chloride assigned with a characteristic of being derived from a renewable organic resource. The polymerization method is not particularly limited, and the resin can be synthesized by any polymerization method such as suspension polymerization, emulsion polymerization, or solution polymerization.

[0023] Vinylidene chloride or vinyl chloride assigned renewable organic resource-derived properties can be produced, for example, by the following method. First, organic compounds (hydrocarbons, fatty acids, alcohols, etc.) are produced using renewable organic resources as raw materials, and renewable organic resource-derived properties are assigned based on the mass balance method or the book-and-claim method. Next, vinylidene chloride or vinyl chloride is produced using the organic compounds as raw materials through production processes similar to those used when fossil resources are used as raw materials. In each process, renewable organic resource-derived properties are sequentially assigned to the resulting products based on the mass balance method or the book-and-claim method.

[0024] Renewable organic resources, also known as biomass, typically include biological resources (typically plants that perform photosynthesis) that can be continuously reproduced in the presence of sunlight, water, and carbon dioxide. Therefore, fossil resources that are depleted through use after mining are excluded from the concept of renewable organic resources.

[0025] The renewable organic resource is preferably at least one selected from vegetable oils and tall oil. Examples of vegetable oils include those obtained by pressing rapeseed, soybeans, oil palm fruit, oil palm seeds, sunflower seeds, cottonseed, peanuts, olives, corn germ, coconut endosperm, sesame seeds, perilla seeds, linseed, castor, rice bran, safflower seeds, and grape seeds. These vegetable oils primarily contain fatty acids such as saturated fatty acids (e.g., palmitic acid, stearic acid, arachidic acid, and behenic acid); unsaturated fatty acids (e.g., palmitoleic acid and oleic acid); and polyunsaturated fatty acids (e.g., linoleic acid and linolenic acid), as well as esters (triglycerides) of these fatty acids with glycerin. Naturally occurring triglycerides are esters of glycerin with fatty acids having a linear alkane or alkene group having 10 to 26 carbon atoms. Further examples include waste vegetable oils recovered after using these vegetable oils or triglycerides for cooking or the like.

[0026] Pine wood contains a large amount of oils and fats such as pine resin, and when kraft pulp is obtained from pine wood through wood pulp processing processes such as cooking, black liquor is obtained as a by-product. This black liquor is then acid-decomposed to obtain crude tall oil, which is then further distilled to obtain tall oil (tall fatty acids). Such tall fatty acids contain oleic acid, linoleic acid, and other acids as their main components.

[0027] As the renewable organic resource, at least one selected from vegetable oil and tall oil is preferred because it is easy to improve the GHG emission reduction rate of products (wrap, casing, latex, and binder), and in particular, at least one selected from waste vegetable oil and tall oil is more preferred because it is easy to improve the GHG emission reduction rate of vinylidene chloride resin. When vegetable oil or tall oil is used as the renewable organic resource, it reduces the CO in the atmosphere. ２ Because waste vegetable oil is a resource obtained by absorbing carbon dioxide, it is easy to improve the rate of reduction in GHG emissions throughout the entire supply chain up to the disposal (incineration) of the product. However, when palm oil, which is extracted from the fruit of oil palm trees, which require a lot of energy for land cultivation, etc., is used, the rate of reduction in GHG emissions throughout the supply chain up to the production of vinylidene chloride resin may actually worsen. On the other hand, waste vegetable oil is a recycled product recovered after use in cooking, etc., and tall oil is a by-product of producing kraft pulp, so when these are used, the problems associated with palm oil are less likely to occur, and the rate of reduction in GHG emissions throughout the supply chain up to the production of vinylidene chloride resin is also easy to improve.

[0028] Each of the above-mentioned renewable organic resources may be used alone or in combination.

[0029] When the renewable organic resource is tall oil or vegetable oil, a method for producing vinylidene chloride or vinyl chloride assigned renewable organic resource-derived characteristics is, for example, as follows. First, tall oil or vegetable oil is hydrogenated and deoxygenated to produce diesel derived from renewable organic resources (biodiesel) or naphtha derived from renewable organic resources (bionaphtha). Next, the bionaphtha and naphtha derived from fossil resources are fed into a cracking facility to produce ethylene, etc. Renewable organic resource-derived characteristics can be assigned to ethylene based on the mass balance method or the book-and-claim method. Furthermore, 1,2-dichloroethane, vinyl chloride, and vinylidene chloride are sequentially produced from ethylene using conventionally known methods. In each process, renewable organic resource-derived characteristics can be assigned to the resulting products based on the mass balance method or the book-and-claim method.

[0030] <Wraps, Casings, Latex, Binders> Vinylidene chloride resins are suitable for use in wraps, casings, latex, binders, and the like.

[0031] Various additives may be added to the vinylidene chloride resin as needed, and the resulting resin may then be molded into wraps, casings, etc. for food packaging, etc. The molding method is not particularly limited, and a conventionally known method such as inflation extrusion molding using a circular die may be used.

[0032] Alternatively, a latex can be obtained by producing a vinylidene chloride resin by emulsion polymerization and blending various additives as needed. Vinylidene chloride resins have excellent properties such as gas barrier properties, moisture resistance, heat sealing properties, aroma retention, oil and chemical resistance, and flame retardancy. Therefore, latex is suitable for use as a coating liquid or binder.

[0033] Examples of additives include heat stabilizers, plasticizers, processing aids, colorants, ultraviolet absorbers, pH adjusters, dispersing aids, etc., which are added for the purpose of improving various properties and moldability. The additives may be contained in the monomer composition during the polymerization step of the vinylidene chloride resin, or may be blended after the polymerization step, as described above.

[0034] EXAMPLES The present invention will be explained in more detail below with reference to examples and comparative examples, but the present invention is not limited to these examples.

[0035] (Preparation of Biovinyl Chloride) Waste vegetable oil and / or tall oil was subjected to hydrogenation and deoxygenation treatment to prepare naphtha derived from renewable organic resources (bionaphtha). The prepared bionaphtha and naphtha derived from fossil resources were fed into a cracking facility to produce ethylene. Based on the mass balance method, a portion of the produced ethylene was assigned renewable organic resource-derived characteristics, thereby preparing bioethylene, in which the component amount assigned to said characteristics accounts for 100% of the mass. Ethylene dichloride (1,2-dichloroethane) was produced using the prepared bioethylene and fossil resource-derived ethylene. Based on the mass balance method, a portion of the produced ethylene dichloride was assigned renewable organic resource-derived characteristics, thereby preparing bioethylene dichloride, in which the component amount assigned to said characteristics accounts for 100% of the mass. Vinyl chloride was produced using the prepared bioethylene dichloride and fossil resource-derived ethylene dichloride. Based on the mass balance method, a portion of the produced vinyl chloride was assigned characteristics derived from renewable organic resources, thereby producing biovinyl chloride produced from naphtha derived from waste vegetable oil and / or tall oil as the raw material, in which the amount of components assigned characteristics derived from renewable organic resources accounts for 100% by mass.

[0036] (Preparation of mixed vinyl chloride) Biovinyl chloride (bioVC), which is produced using naphtha derived from waste vegetable oil and / or tall oil as a raw material and in which the amount of components assigned to be derived from renewable organic resources accounts for 100% by mass, was mixed with petroleum-derived vinyl chloride (petroleum VC) in a mass ratio of 25 / 75 (bioVC / petroleum VC) to prepare a mixed vinyl chloride in which the amount of components assigned to be derived from renewable organic resources accounts for 25% by mass.

[0037] (Preparation of Biovinylidene Chloride) Biovinylidene chloride, in which 100% by mass of components are assigned characteristics of being derived from renewable organic resources, was prepared by a conventionally known method using biovinylidene chloride produced using naphtha derived from waste vegetable oil and / or tall oil as a raw material, in which 100% by mass of components are assigned characteristics of being derived from renewable organic resources.

[0038] (Preparation of Mixed Vinylidene Chloride 1) The prepared biovinylidene chloride (Bio VD) and petroleum-derived vinylidene chloride (Petroleum VD) were mixed at a mass ratio of 25 / 75 (Bio VD / Petroleum VD) to prepare Mixed Vinylidene Chloride 1, in which the amount of components assigned to renewable organic resource-derived characteristics accounted for 25% by mass.

[0039] (Preparation of mixed vinylidene chloride 2) Mixed vinylidene chloride 2, also having 25% by mass of components assigned to be derived from renewable organic resources, was prepared by a conventionally known method using mixed vinyl chloride, the amount of which was 25% by mass of components assigned to be derived from renewable organic resources.

[0040] Example 1: The prepared mixed vinylidene chloride 1 (mixed VD1) and mixed vinyl chloride (mixed VC) were polymerized by a conventional method at a monomer charge mass ratio of 80 / 20 (mixed VD1 / mixed VC), to obtain a vinylidene chloride resin (vinylidene chloride-vinyl chloride copolymer). In this vinylidene chloride resin, the amount of components assigned the renewable organic resource-derived characteristic was 20% (= 80 × 25 / 100) derived from mixed vinylidene chloride 1 and 5% (= 20 × 25 / 100) derived from mixed vinyl chloride, totaling 25%.

[0041] The vinylidene chloride resin thus obtained was melt-extruded and then stretched to obtain a wrap. In the obtained wrap, the amount of components assigned to the renewable organic resource-derived characteristics was 25% by mass.

[0042] Example 2: Petroleum-derived vinylidene chloride (petroleum VD) and biovinyl chloride (bioVC), produced from naphtha derived from waste vegetable oil and / or tall oil, were polymerized at a monomer feed mass ratio of 75 / 25 (petroleum VD / bioVC), with 100% of the mass being assigned characteristics of being derived from renewable organic resources. A vinylidene chloride-vinyl chloride copolymer was obtained by polymerization. In this vinylidene chloride resin, the amount of the component assigned characteristics of being derived from renewable organic resources was 25% (= 25 × 100 / 100) derived from biovinyl chloride.

[0043] The vinylidene chloride resin thus obtained was melt-extruded and then stretched to obtain a wrap. In the obtained wrap, the amount of components assigned to the renewable organic resource-derived characteristics was 25% by mass.

[0044] Example 3: The prepared biovinylidene chloride (Bio VD), petroleum-derived vinylidene chloride (Petroleum VD), and petroleum-derived vinyl chloride (Petroleum VC) were polymerized in a monomer charge mass ratio of 25 / 55 / 20 (Bio VD / Petroleum VD / Petroleum VC) to obtain a vinylidene chloride-based resin (vinylidene chloride-vinyl chloride copolymer). In this vinylidene chloride-based resin, the amount of components assigned renewable organic resource-derived properties was 25% (= 25 × 100 / 100) derived from biovinylidene chloride.

[0045] The vinylidene chloride resin thus obtained was melt-extruded and then stretched to obtain a wrap. The amount of components assigned to the renewable organic resource-derived characteristics in the resulting wrap was 25% by mass.

[0046] Example 4 The prepared mixed vinylidene chloride 2 (mixed VD2) and mixed vinyl chloride (mixed VC) were polymerized by a conventional method using a monomer charging ratio of 80 / 20 (mixed VD2 / mixed VC) to obtain a vinylidene chloride resin (vinylidene chloride-vinyl chloride copolymer). In this vinylidene chloride resin, the amount of components assigned to the renewable organic resource-derived properties was 20% (= 80 × 25 / 100) derived from mixed vinylidene chloride 2 and 5% (= 20 × 25 / 100) derived from mixed vinyl chloride, totaling 25%.

[0047] The vinylidene chloride resin thus obtained was melt-extruded and then stretched to obtain a wrap. In the obtained wrap, the amount of components assigned to the renewable organic resource-derived characteristics was 25% by mass.

[0048] Comparative Example 1 Using VC and VD produced using 100% petroleum-derived raw material (naphtha), polymerization was carried out by a conventionally known method at a monomer charge mass ratio of 20 / 80 (VC / VD) to obtain a vinylidene chloride resin (vinylidene chloride-vinyl chloride copolymer). As the environmental load from the raw materials to the production of 1 kg of vinylidene chloride resin, GHG emissions (unit: kg CO ２ The vinylidene chloride resin thus obtained was melt-extruded and then stretched to obtain a wrap. The GHG emissions (unit: kg CO) were calculated as the environmental load from the raw material to the disposal (incineration) of 1 kg of wrap. ２ eq) was calculated.

[0049] Examples 5 to 19 Vinylidene chloride resins having the component amounts (allocation ratios) assigned the renewable organic resource-derived properties shown in Table 1 were produced in the same manner as in Comparative Example 1, except that some or all of the VC and VD used in the polymerization were replaced with VC and VD produced using naphtha derived from waste vegetable oil, palm oil extracted from oil palm fruits, tall oil, or a mixture thereof as the raw material, and assigned the renewable organic resource-derived properties by the mass balance method. GHG emissions (unit: kg CO ２The vinylidene chloride resin thus obtained was melt-extruded and then stretched to obtain a wrap. The GHG emissions (unit: kg CO ２ The GHG emission reduction rates of the vinylidene chloride resin and the wrap are shown in Table 1.

[0050]

Claims

1. A method for producing a food packaging wrap containing a vinylidene chloride resin, the amount of a component that is assigned a renewable organic resource-derived characteristic based on a mass balance approach or a book and claim approach (as defined in ISO 22095:2020) being 10% or more by mass, comprising: A method for producing a food packaging wrap, comprising a step of producing the vinylidene chloride-based resin by polymerizing vinylidene chloride assigned with a renewable organic resource derived characteristic and / or vinyl chloride assigned with a renewable organic resource derived characteristic.

2. The method for producing a food packaging wrap according to claim 1, which is assigned a renewable organic resource origin characteristic based on the mass balance method (defined in ISO 22095:2020).

3. A method for producing a food packaging wrap as described in claim 1, wherein the vinylidene chloride and / or the vinyl chloride are produced using naphtha derived from renewable organic resources as a raw material.

4. The method for producing a food packaging wrap according to claim 1, wherein the renewable organic resource comprises at least one selected from vegetable oil and tall oil.

5. The method for producing a food packaging wrap according to claim 4, wherein the vegetable oil is waste vegetable oil.

6. A method for producing a food packaging wrap as described in claim 1, wherein the GHG emission reduction rate of the vinylidene chloride resin is 0.1% or more.

7. A method for producing a casing containing a vinylidene chloride resin, the amount of a component assigned a renewable organic resource-derived characteristic based on a mass balance approach or a book-and-claim approach (as defined in ISO 22095:2020) being 10% or more by mass, comprising:

1. A method for producing a casing, comprising: polymerizing vinylidene chloride having an assigned renewable organic resource derived characteristic and / or vinyl chloride having an assigned renewable organic resource derived characteristic to produce the vinylidene chloride based resin.

8. A method for producing a latex containing a vinylidene chloride resin, the amount of a component assigned a renewable organic resource-derived characteristic based on a mass balance approach or a book-and-claim approach (as defined in ISO 22095:2020) being 10% or more by mass, comprising:

1. A method for producing a latex, comprising: polymerizing vinylidene chloride having an assigned renewable organic resource derived characteristic and / or vinyl chloride having an assigned renewable organic resource derived characteristic to produce the vinylidene chloride-based resin.

9. A method for producing a binder comprising a vinylidene chloride resin, the amount of a component assigned a renewable organic resource-derived characteristic based on a mass balance approach or a book and claim approach (as defined in ISO 22095:2020) being 10% or more by mass, comprising:

1. A method for producing a binder, comprising: polymerizing vinylidene chloride having an assigned renewable organic resource derived characteristic and / or vinyl chloride having an assigned renewable organic resource derived characteristic to produce said vinylidene chloride based resin.