WO2013042267A1 - ハロゲン原子含有樹脂組成物、その製造方法およびそれからなる成形品 - Google Patents
ハロゲン原子含有樹脂組成物、その製造方法およびそれからなる成形品 Download PDFInfo
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- WO2013042267A1 WO2013042267A1 PCT/JP2011/071730 JP2011071730W WO2013042267A1 WO 2013042267 A1 WO2013042267 A1 WO 2013042267A1 JP 2011071730 W JP2011071730 W JP 2011071730W WO 2013042267 A1 WO2013042267 A1 WO 2013042267A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
-
- 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
- C08K5/04—Oxygen-containing compounds
- C08K5/05—Alcohols; Metal alcoholates
- C08K5/053—Polyhydroxylic alcohols
-
- 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
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/098—Metal salts of carboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L29/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal or ketal radical; Compositions of hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Compositions of derivatives of such polymers
- C08L29/02—Homopolymers or copolymers of unsaturated alcohols
- C08L29/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
Definitions
- the present invention relates to a halogen atom-containing resin composition suitably used in fields such as food use, medical use, or general use such as daily necessities, a method for producing the same, and a molded article comprising the same.
- the present invention relates to a halogen atom-containing resin composition capable of obtaining a molded product having good thermal stability and little coloration, a method for producing the same, and a molded product comprising the same.
- Halogen atom-containing resins typified by polyvinyl chloride are molded and processed with stabilizers such as Ca-Zn and Ba-Zn, and the molded products are used for general purposes as well as food and medical applications. Widely used.
- halogen atom-containing resin compositions have been proposed in which an antioxidant is added or a compound having a hydroxyl group is added.
- Patent Document 1 Japanese Patent Laid-Open No. 50-92947 discloses a method of adding calcium soap, zinc soap, polyhydric alcohol or a derivative thereof, and a neutral inorganic calcium salt to a chlorine-containing resin. Has been.
- Patent Document 2 Japanese Patent Laid-Open No. 54-813559 discloses a method of adding a water-soluble polymer to a chlorine-containing polymer.
- Patent Document 3 Japanese Patent Laid-Open No. 57-147552 discloses a method of adding a reaction condensate of dipentaerythritol and dicarboxylic acid, a zinc compound, and hydrotalcite to a chlorine-containing resin.
- Patent Document 4 Japanese Patent Application Laid-Open No. 60-238345 discloses an ethylene-vinyl acetate having a thermoplastic resin such as polyvinyl chloride with an ethylene unit content of 20 to 50% and a vinyl acetate unit saponification degree of 96% or more. A method of adding a copolymer saponified product, a hydrotalcite compound and the like is disclosed.
- Patent Document 5 Japanese Patent Application Laid-Open No. 1-178543 discloses a halogen-containing thermoplastic resin, a metal soap, and a copolymer having an ethylene content of 20 to 75 mol% and a saponification degree of a vinyl acetate moiety of 50 mol% or more. A method of adding a saponified ethylene-vinyl acetate copolymer having a composition is disclosed.
- Patent Document 6 JP-A-6-287387 discloses a method of adding a metal salt of an organic acid and an acetalized product of polyvinyl alcohol to a vinyl chloride resin.
- Patent Document 7 Japanese Patent Application Laid-Open No. 9-32866 discloses partial saponification of a vinyl chloride resin having a saponification degree of 70 to 95 mol%, an average polymerization degree of 300 to 2,000, and a mercapto group at the molecular chain terminal. A method of adding polyvinyl alcohol is disclosed.
- Patent Document 8 Japanese Patent Laid-Open No. 9-31281 discloses a method of adding a zinc compound, hydrotalcites, polyvinyl alcohol, and polymethyl methacrylate to a vinyl chloride resin.
- Non-Patent Document 1 Polymer Collection, Vol. 47, No. 3, p. 197 (1990) describes that polyvinyl chloride, zinc stearate-calcium stearate composite soap, complete saponification with a polymerization degree of 600 or more. A method of adding polyvinyl alcohol is disclosed.
- Non-Patent Document 2 Polymer Collection, Vol. 47, No. 6, p. 509 (1990) describes polyvinyl chloride, zinc stearate-calcium stearate composite soap, polymerization degree of 500, saponification degree. A method of adding 73.6 mol% partially saponified polyvinyl alcohol is disclosed.
- Non-Patent Document 3 Polymer Collection, Vol. 50, No. 2, p. 65 (1993) describes polyvinyl chloride, zinc stearate-calcium stearate composite soap, with an ethylene content of 29 mol% or more. A method of adding an ethylene-vinyl alcohol copolymer is disclosed.
- Non-Patent Document 4 Polymers & Polymer Compositions, Vol. 11, p. 649 (2003) describes polyvinyl chloride, zinc stearate-calcium stearate composite soap, a degree of polymerization of 500, and a degree of saponification of 98.5 mol%. In which a polyvinyl alcohol or an ethylene-vinyl alcohol copolymer having an ethylene content of 29 mol% or more is added.
- Non-Patent Document 5 Journal of the Adhesion Society of Japan, Vol. 43, No. 2, p. 43 (2007) describes that polyvinyl alcohol having a polymerization degree of 500 and a saponification degree of 88 mol% is added to polyvinyl chloride.
- a method of adding polyvinyl alcohol and polymethyl methacrylate having a polymerization degree of 1700 and a saponification degree of 78 mol% or more is disclosed.
- Patent Documents 1 to 8 and Non-Patent Documents 1 to 5 have the following problems.
- An object of the present invention is to provide a halogen atom-containing resin composition that is excellent in thermal stability at the time of molding and can obtain a molded product with little coloring, a method for producing the same, and a molded product comprising the same.
- a halogen atom-containing resin composition obtained by adding specific amounts of specific polyvinyl alcohol, specific polyhydric alcohol and zinc compound to a halogen atom-containing resin in particular, Found that the molded product obtained by molding the halogen atom-containing resin composition has little coloration even when molded at a low temperature, and further studies based on the findings The present invention has been completed.
- the above-mentioned problem is that 0.01 to 2.2.
- the viscosity average polymerization degree of the polyvinyl alcohol is preferably 100 to 450.
- the above halogen atom-containing resin composition is preferably one containing polyvinyl alcohol, a polyhydric alcohol and a zinc compound added to the halogen atom-containing resin.
- the above problem is that 0.01 to 2.5 of polyvinyl alcohol having a saponification degree of 60 to 99.9 mol% and a viscosity average polymerization degree of 100 to 1,000 with respect to 100 parts by mass of the halogen atom-containing resin.
- the halogen atom-containing resin composition of the present invention When the halogen atom-containing resin composition of the present invention is used, it has sufficient thermal stability even when molded at a particularly low temperature, and there is little adhesion of an adhesive to the inside of the extruder during molding. . In addition, a molded product obtained by molding the halogen atom-containing resin composition is less colored.
- halogen atom-containing resin composition of the present invention a method for producing the same, and a molded product made thereof will be described in detail.
- Halogen atom-containing resin examples include chlorine-containing resins such as polyvinyl chloride, polyvinylidene chloride, chlorinated polyvinyl chloride, chlorinated polyolefin, vinyl chloride-vinyl acetate copolymer; Depending on the use of the molded product, one or more of these can be used, but from the viewpoint of easy availability and physical properties, a chlorine-containing resin is preferred. Polyvinyl chloride or polyvinylidene chloride is more preferable, and polyvinyl chloride is more preferable.
- a vinyl chloride monomer may be used alone, or 50% by mass or more of a vinyl chloride monomer and other copolymerizable with this. Mixtures with monomers may be used.
- Other monomers copolymerizable with vinyl chloride monomer include vinyl esters such as vinyl acetate and vinyl propionate; (meth) acrylic acid esters such as methyl acrylate and ethyl acrylate; ethylene and propylene Olefins such as maleic anhydride, acrylonitrile, styrene, vinylidene chloride and the like.
- the method for producing the polyvinyl chloride using these monomers is not particularly limited, but a method of suspension polymerization of the monomers in the presence of a polymerization initiator can be suitably employed.
- a dispersion stabilizer for example, water-soluble cellulose ethers such as methyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose; water-soluble polymers such as polyvinyl alcohol and gelatin; sorbitan monolaurate, sorbitan trioleate, glycerin Oil-soluble emulsifiers such as tristearate and ethylene oxide propylene oxide block copolymer; water-soluble emulsifiers such as polyoxyethylene sorbitan monolaurate, polyoxyethylene glycerine oleate and sodium laurate are preferably used.
- polyvinyl alcohol it is preferable to use polyvinyl alcohol.
- oil-soluble or water-soluble polymerization initiators conventionally used for polymerization of vinyl chloride monomers and the like can be used.
- oil-soluble polymerization initiator include percarbonate compounds such as diisopropyl peroxydicarbonate, di-2-ethylhexyl peroxydicarbonate, diethoxyethyl peroxydicarbonate; t-butyl peroxyneodecanate, t -Perester compounds such as butyl peroxypivalate, t-hexylperoxypivalate, ⁇ -cumylperoxyneodecanate; acetylcyclohexylsulfonyl peroxide, 2,4,4-trimethylpentyl-2-peroxyphenoxyacetate Peroxides such as 3,5,5-trimethylhexanoyl peroxide and lauroyl peroxide; azo compounds such as azobis-2,4-dimethylvaleronitrile
- water-soluble polymerization initiator examples include potassium persulfate, ammonium persulfate, hydrogen peroxide, cumene hydroperoxide, and the like. These oil-soluble or water-soluble polymerization initiators can be used alone or in combination of two or more.
- additives include polymerization regulators such as aldehydes, halogenated hydrocarbons, and mercaptans; polymerization inhibitors such as phenol compounds, sulfur compounds, and N-oxide compounds; pH adjusters; cross-linking agents; antiseptics; An anti-blocking agent, an antifoaming agent, an anti-scale agent, an antistatic agent, and the like.
- the polymerization temperature is not particularly limited, and can be adjusted to a high temperature exceeding 90 ° C. as well as a low temperature of about 20 ° C.
- the method for causing the halogen atom-containing resin to contain polyvinyl alcohol (hereinafter sometimes abbreviated as “PVA”) contained in the halogen atom-containing resin composition of the present invention is not particularly limited. It is preferable to make it contain by adding to the halogen atom containing resin obtained after superposition
- the PVA can be added to the halogen atom-containing resin as a powder or dissolved in water or an organic solvent. When the PVA is added before or during polymerization of the monomer for forming the halogen atom-containing resin, the PVA acts as a dispersant for the monomer and the resulting halogen atom-containing resin.
- the degree of saponification of the PVA is 60 to 99.9 mol%, preferably 65 to 99 mol%, more preferably 70 to 99 mol%. When the degree of saponification is less than 60 mol%, or when it exceeds 99.9 mol%, long-term thermal stability decreases.
- the saponification degree of PVA is a value measured according to JIS K6726.
- the PVA has a viscosity average degree of polymerization (hereinafter sometimes simply referred to as “polymerization degree”) of 100 to 1,000, preferably 150 to 800, and more preferably 200 to 700.
- polymerization degree a viscosity average degree of polymerization
- the upper limit of the degree of polymerization of PVA is 450 from the viewpoint of further improving the thermal stability and further suppressing the adhesion of the adhesive to the inside of the extruder during molding. More preferably.
- the degree of polymerization of PVA is a value measured according to JIS K6726.
- the PVA is obtained by polymerizing a vinyl ester monomer by employing a conventionally known method such as a bulk polymerization method, a solution polymerization method, a suspension polymerization method, an emulsion polymerization method, a dispersion polymerization method, and the like. It can be produced by saponifying.
- preferred polymerization methods are solution polymerization, emulsion polymerization and dispersion polymerization. In the polymerization operation, any one of a batch method, a semi-batch method, and a continuous method can be employed.
- vinyl ester monomer examples include vinyl acetate, vinyl formate, vinyl propionate, vinyl caprylate, vinyl versatate, and among these, vinyl acetate is an industrial viewpoint. preferable.
- the vinyl ester monomer When the vinyl ester monomer is polymerized, the vinyl ester monomer may be copolymerized with another monomer as long as the gist of the present invention is not impaired.
- examples of other monomers that can be used include ⁇ -olefins such as ethylene, propylene, n-butene, and isobutylene; acrylic acid and salts thereof; methyl acrylate, ethyl acrylate, n-propyl acrylate, and acrylic acid i.
- Acrylic acid esters such as propyl, n-butyl acrylate, i-butyl acrylate, t-butyl acrylate, 2-ethylhexyl acrylate, dodecyl acrylate, octadecyl acrylate; methacrylic acid and its salts; methyl methacrylate, Methacrylic acid such as ethyl methacrylate, n-propyl methacrylate, i-propyl methacrylate, n-butyl methacrylate, i-butyl methacrylate, t-butyl methacrylate, 2-ethylhexyl methacrylate, dodecyl methacrylate, octadecyl methacrylate Acid esters; N-methylacrylamide, N-ethylacrylamide, N, N-dimethylacrylamide, diacetoneacrylamide, acrylamidepropanesulfonic acid and its salt, acrylamideprop
- Chain transfer agents include aldehydes such as acetaldehyde, propionaldehyde, butyraldehyde, and benzaldehyde; ketones such as acetone, methyl ethyl ketone, hexanone, and cyclohexanone; mercaptans such as 2-hydroxyethanethiol; thiocarboxylic acids such as thioacetic acid; Examples thereof include halogenated hydrocarbons such as ethylene, among which aldehydes and ketones are preferably used.
- the amount of chain transfer agent to be added is determined according to the chain transfer constant of the chain transfer agent to be added and the degree of polymerization of the target PVA. 10 mass% is desirable.
- thiocarboxylic acids or the like are used as the serial transfer agent, a functional group derived from the chain transfer agent is introduced into the terminal of the vinyl ester polymer, and a PVA having an SH group at the terminal is obtained by saponification There is.
- PVA thiocarboxylic acids
- the terminal of PVA does not have SH group.
- PVA having a large amount of 1,2-glycol bonds obtained by polymerizing a vinyl ester monomer under a temperature condition higher than usual can also be used.
- the amount of 1,2-glycol bonds in PVA is preferably 1.9 mol% or more, more preferably 2.0 mol% or more, and even more preferably 2.1 mol% or more.
- the upper limit of the 1,2-glycol bond amount is, for example, 3.0 mol%.
- the content of PVA in the halogen atom-containing resin composition is 0.01 to 2.5 parts by mass, preferably 0.05 to 2 parts by mass with respect to 100 parts by mass of the halogen atom-containing resin. If the content of PVA is less than 0.01 parts by mass, the long-term thermal stability is not sufficient, and if it exceeds 2.5 parts by mass, the resulting molded product comprising the halogen atom-containing resin composition tends to be colored.
- the PVA used may be in the form of a composition containing an acid having a pKa of 3.5 to 5.5 at 25 ° C. and / or a metal salt thereof.
- an acetic acid pKa4.76), propionic acid (pKa4.87), butyric acid (pKa4.63), octanoic acid (pKa4.89), adipic acid (pKa5.03) ), Benzoic acid (pKa 4.00), formic acid (pKa 3.55), valeric acid (pKa 4.63), heptanoic acid (pKa 4.66), lactic acid (pKa 3.66), phenylacetic acid (pKa 4.10), isobutyric acid (PKa 4.63), cyclohexanecarboxylic acid (pKa 4.70) and the like.
- acetic acid, propionic acid and lactic acid are preferable.
- metal salt Usually, salt of alkali metals, such as sodium and potassium; Salt of alkaline earth metals, such as magnesium and calcium, is used.
- the content of the acid and / or metal salt thereof is preferably 0.05 to 5 parts by mass, more preferably 0.1 to 3 parts by mass, and still more preferably 0.005 parts by mass with respect to 100 parts by mass of PVA. 15 to 2 parts by mass. If the content of the acid and / or metal salt thereof relative to 100 parts by mass of PVA is less than 0.05 parts by mass, the long-term thermal stability may be lowered, while if it exceeds 5 parts by mass, the resulting halogen atom There exists a tendency for the molded article which consists of a containing resin composition to become easy to color.
- the method for causing the PVA to contain the acid and / or metal salt thereof in a predetermined amount is not particularly limited.
- the method for adjusting the type and amount of the alkali catalyst used in the saponification reaction of the polyvinyl ester described above; A method of adding or removing the acid and / or its metal salt later is employed.
- the method for causing the halogen atom-containing resin to contain the polyhydric alcohol contained in the halogen atom-containing resin composition of the present invention is not particularly limited, but the halogen obtained after polymerization of the monomer for forming the halogen atom-containing resin. It is preferable to make it contain by adding to atom-containing resin.
- the polyhydric alcohol can be added to the halogen atom-containing resin as a powder or viscous liquid, or dissolved in water or an organic solvent.
- the polyhydric alcohol contained in the halogen atom-containing resin composition of the present invention has a molecular weight of 2,000 or less, preferably 1,500 or less, particularly preferably 1,000 or less. When the molecular weight exceeds 2,000, long-term thermal stability is lowered. Although there is no restriction
- the polyhydric alcohol contained in the halogen atom-containing resin composition of the present invention has a hydroxyl group content in the molecule of 10% by mass or more, preferably 15% by mass or more, and more preferably 20% by mass or more.
- the hydroxyl group content is less than 10% by mass, long-term thermal stability is impaired.
- the hydroxyl group content is usually 60% by mass or less.
- the hydroxyl group content rate (mass%) of a polyhydric alcohol can be calculated
- (Hydroxyl group content) ⁇ (Total atomic weight of hydrogen atom and oxygen atom constituting hydroxyl group contained in one molecule of polyhydric alcohol) / (Molecular weight of polyhydric alcohol) ⁇ ⁇ 100
- Examples of the polyhydric alcohol contained in the halogen atom-containing resin composition of the present invention include glycerin, diglycerin, polyglycerin having a number of repeating glycerin units of 3 or more, glycerin aliphatic carboxylic acid ester, diglycerin aliphatic carboxylic acid.
- Acid ester polyglycerol aliphatic carboxylic acid ester having 3 or more repeating glycerol units, glycerol alkyl ether, diglycerol alkyl ether, polyglycerol alkyl ether having 3 or more repeating glycerol units, erythritol, xylitol Sorbitol, mannitol, pentaerythritol, pentaerythritol aliphatic carboxylic acid ester, dipentaerythritol, dipentaerythritol aliphatic carboxylic acid ester, ribose, deoxyribose Glucose, fructose, galactose, trehalose and the like.
- polyhydric alcohols sorbitol, diglycerin, polyglycerin having a repeating number of glycerin units of 3 or more and dipentaerythritol are preferable because they maintain excellent thermal stability over a long period of time. From the viewpoint, sorbitol and dipentaerythritol are more preferable.
- the esters and ethers mentioned above as polyhydric alcohols are those in which some of the hydroxyl groups of the polyhydric alcohol before esterification or etherification are esterified or etherified. Alternatively, it is a compound having a plurality of hydroxyl groups in the molecule even after etherification.
- the content of the polyhydric alcohol in the halogen atom-containing resin composition is 0.01 to 2.5 parts by mass, preferably 0.05 to 2 parts by mass with respect to 100 parts by mass of the halogen atom-containing resin. If the polyhydric alcohol content is less than 0.01 parts by mass, the long-term thermal stability is not sufficient, and if it exceeds 2.5 parts by mass, the resulting molded product made of the halogen atom-containing resin composition tends to be colored. Or volatilization from the halogen atom-containing resin composition or a molded product comprising the same, and bleeding out to the surface may occur.
- the halogen atom-containing resin composition of the present invention It is one of the characteristics of the halogen atom-containing resin composition of the present invention that the above polyhydric alcohol is contained together with the PVA. Thereby, even when it is molded at a low temperature, the halogen atom-containing resin composition has sufficient thermal stability. Accordingly, the applicable molding temperature range is widened. Further, when the polyhydric alcohol is contained in the halogen atom-containing resin composition together with the PVA, there is little adhesion of an adhesive to the inside of the extruder during molding, and the resulting molded product is also less colored.
- the method for allowing the halogen atom-containing resin to contain the zinc compound contained in the halogen atom-containing resin composition of the present invention is not particularly limited, but the halogen atom obtained after polymerization of the monomer for forming the halogen atom-containing resin It is preferable to make it contain by adding to containing resin.
- the zinc compound can be added to the halogen atom-containing resin as a powder or dissolved or dispersed in water or an organic solvent.
- Examples of the zinc compound contained in the halogen atom-containing resin composition of the present invention include organic acid zinc salts and inorganic zinc salts.
- Examples of the organic acid zinc salt include zinc salts of aliphatic carboxylic acids such as zinc stearate, zinc laurate, and zinc oleate; and aromatic carboxylic acids such as zinc benzoate and zinc pt-butylbenzoate.
- Examples of the inorganic zinc salt include zinc oxide and zinc carbonate. Among these, a zinc salt of an aliphatic carboxylic acid is preferable, and zinc stearate is more preferable.
- the content of the zinc compound in the halogen atom-containing resin composition is 0.01 to 5 parts by mass, preferably 0.05 to 3 parts by mass with respect to 100 parts by mass of the halogen atom-containing resin.
- the content of the zinc compound is less than 0.01 parts by mass, a sufficient heat stabilization effect cannot be obtained, and when it exceeds 5 parts by mass, the resulting molded product made of the halogen atom-containing resin composition is not preferable. .
- the halogen atom-containing resin contains the PVA, the polyhydric alcohol, and the zinc compound
- the halogen atom-containing resin composition of the present invention may be composed only of the halogen atom-containing resin, the PVA, the polyhydric alcohol and the zinc compound.
- commonly used lubricants and stabilizers plasticizers, phenolic antioxidants, phosphorus antioxidants, UV absorbers, light stabilizers, antifogging agents, antistatic agents, flame retardants, modifiers, reinforcing agents, pigments, foaming agents, etc. You may contain.
- the halogen atom-containing resin composition of the present invention may contain other resins than the above.
- the proportion of the total of the halogen atom-containing resin, the PVA, the polyhydric alcohol, and the zinc compound is preferably in the range of 50 to 100% by mass, It is more preferably in the range of ⁇ 100% by mass, and still more preferably in the range of 80 ⁇ 100% by mass.
- the lubricant examples include hydrocarbons such as liquid paraffin, natural paraffin, microwax and polyethylene wax; fatty acids such as stearic acid and lauric acid; stearic acid amide, palmitic acid amide, methylene bisstearamide, ethylene bisstearamide, etc. Fatty acid amides; fatty acid esters of monoalcohols such as butyl stearate; hydrogenated castor oil, ethylene glycol monostearate, glycerin monostearate, triethylene glycol di-2-ethylhexanoate, etc. Examples having a content of less than 10% by mass; alcohols such as cetyl alcohol and stearyl alcohol.
- the compound is preferably a fatty acid monoester of polyol, and more preferably a fatty acid monoester of glycerin.
- the fatty acid in the fatty acid ester of polyol preferably has 8 to 22 carbon atoms, and more preferably stearic acid.
- glycerin monostearate is particularly suitable.
- the content of the lubricant is preferably 0.001 to 10 parts by mass, more preferably 0.05 to 5 parts by mass with respect to 100 parts by mass of the halogen atom-containing resin.
- alkaline earth metal soaps such as calcium soap and barium soap, aluminum soaps, organometallic salts such as organophosphate metal salts, metal oxidation Products, metal hydroxides, metal carbonates, inorganic metal salts such as inorganic composite metal salts such as zeolite, halogen oxyacid salts such as barium chlorate, barium perchlorate, sodium perchlorate, ⁇ -diketones, epoxy compounds
- Non-metal stabilizers such as
- plasticizer examples include acids such as phthalic acid, trimellitic acid, pyromellitic acid, adipic acid, sebacic acid and azelaic acid, and n-propanol, isopropanol, n-butanol, isobutanol, t-butanol, n- Pentanol, isopentanol, t-pentanol, n-hexanol, isohexanol, n-heptanol, isoheptanol, n-octanol, isooctanol, 2-ethylhexanol, n-nonanol, isononanol, n-decanol, isodecanol Esters such as esters composed of linear or branched alkyl monoalcohols alone or in mixture, such as lauryl alcohol, myristyl alcohol, palmityl alcohol, stearyl alcohol, or
- the phenolic antioxidant is not particularly limited as long as it is usually used.
- the phosphorus-based antioxidant may be any of those usually used.
- trisnonylphenyl phosphite tris (2,4-di-t-butylphenyl) phosphite, tris [2-t- Butyl-4- (3-tert-butyl-4-hydroxy-5-methylphenylthio) -5-methylphenyl] phosphite
- tridecyl phosphite tridecyl phosphite
- octyl diphenyl phosphite di (decyl) monophenyl phosphite
- di (Tridecyl) pentaerythritol diphosphite distearyl pentaerythritol diphosphite
- di (nonylphenyl) pentaerythritol diphosphite bis (2,4-di-t-butylphenyl) pentaerythrito
- ultraviolet absorber examples include 2,4-dihydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-octoxybenzophenone, and 5,5′-methylenebis (2-hydroxy-4-methoxybenzophenone).
- 2-hydroxybenzophenone such as 2-; 2- (2-hydroxy-5-t-octylphenyl) benzotriazole, 2- (2-hydroxy-3,5-di-t-butylphenyl) -5-chlorobenzotriazole, 2- (2-hydroxy-3-tert-butyl-5-methylphenyl) -5-chlorobenzotriazole, 2- (2-hydroxy-3,5-dicumylphenyl) benzotriazole, 2,2′-methylenebis ( 4-t-octyl-6-benzotriazolyl) phenol, 2- (2- 2- (2-hydroxyphenyl) benzotriazole such as polyethylene glycol ester of loxy-3-t-butyl-5-carboxyphenyl) benzotriazole; phenyl salicylate resorcinol monobenzoate, 2,4-di-t-butylphenyl-3 , 5-di-t-butyl-4-hydroxybenzoate, hexadecy
- Examples of the light stabilizer include 2,2,6,6-tetramethyl-4-piperidyl stearate, 1,2,2,6,6-pentamethyl-4-piperidyl stearate, 2,2,6, 6-tetramethyl-4-piperidylbenzoate, bis (2,2,6,6-tetramethyl-4-piperidyl) sebacate, bis (1,2,2,6,6-pentamethyl-4-piperidyl) sebacate, tetrakis (2,2,6,6-tetramethyl-4-piperidyl) butanetetracarboxylate, tetrakis (1,2,2,6,6-pentamethyl-4-piperidyl) butanetetracarboxylate, bis (1,2,2, 2,6,6-pentamethyl-4-piperidyl) di (tridecyl) -1,2,3,4-butanetetracarboxylate, bis (1,2,2,6, -Pentamethyl-4-hydroxybenzyl) malonate, 1- (2-hydroxyethyl
- Examples of the molding method of the halogen atom-containing resin composition of the present invention include extrusion processing, calendar processing, blow molding, press processing, powder molding, injection molding and the like.
- the molded product of the present invention comprises the above halogen atom-containing resin composition.
- halogen atom-containing resin composition there is no restriction
- parts and% represent parts by mass and mass%, respectively.
- Example 1 Manufacture of polyvinyl chloride
- a dispersion stabilizer was prepared by dissolving polyvinyl alcohol having a polymerization degree of 850 and a saponification degree of 72 mol% in deionized water in an amount corresponding to 600 ppm with respect to vinyl chloride.
- the dispersion stabilizer thus obtained was charged into a glass-lined autoclave in which the scale adhesion inhibitor NOXOL WSW (CIRS) was applied to a solid content of 0.3 g / m 2 .
- NOXOL WSW scale adhesion inhibitor
- Example 2 to 8 Polyvinyl chloride was obtained in the same manner as in Example 1 except that the types of polyhydric alcohol used, the content of PVA, polyhydric alcohol and zinc stearate were changed as shown in Table 1. A sheet was formed in the same manner. In the same manner as in Example 1, the thermal stability test, the colorability test, and the adhesion occurrence evaluation of the adhesive were performed. The evaluation results are shown in Table 1.
- Examples 1 to 8 PVA having a saponification degree of 80 mol% and a polymerization degree of 320, polyhydric alcohol as sorbitol, diglycerin, polyglycerin (glycerin 10-mer or 20-mer) or dipentaerythritol
- polyhydric alcohol as sorbitol
- diglycerin diglycerin
- polyglycerin glycerin 10-mer or 20-mer
- dipentaerythritol The evaluation result of the polyvinyl chloride composition containing both is shown. All the polyvinyl chloride compositions had sufficient thermal stability, and there was little adhesion of an adhesive to the test roll surface. Further, each sheet obtained by molding these polyvinyl chloride compositions was less colored.
- Comparative Examples 1 and 2 show the evaluation results of the polyvinyl chloride composition containing no polyhydric alcohol. When no polyhydric alcohol was contained, the blackening time was short and the thermal stability was insufficient.
- Comparative Example 3 shows the evaluation result of a polyvinyl chloride composition that does not contain PVA and contains 1 part of sorbitol as a polyhydric alcohol.
- PVA polyvinyl chloride composition that does not contain PVA and contains 1 part of sorbitol as a polyhydric alcohol.
- Comparative Example 4 shows the evaluation results of a polyvinyl chloride composition containing 3 parts of PVA and 1 part of sorbitol as a polyhydric alcohol. When 3 parts of PVA were contained, the blackening time was sufficiently long, but the sheet was colored yellow.
- Comparative Example 5 shows the evaluation results of a polyvinyl chloride composition containing 1 part of PVA and 3 parts of sorbitol as a polyhydric alcohol.
- the blackening time was sufficiently long, but the sheet was colored yellowish brown, and a large amount of sticky material was also adhered to the test roll surface.
- Comparative Example 6 shows the evaluation result of a polyvinyl chloride composition containing 0.005 part of PVA and 1 part of sorbitol as a polyhydric alcohol.
- PVA polyvinyl chloride composition
- the blackening time was short, the thermal stability was insufficient, the sheet was colored yellow, and a large amount of adhesive was also attached to the test roll surface.
- Comparative Example 7 shows the evaluation result of a polyvinyl chloride composition containing 1 part of PVA and 0.005 part of sorbitol as a polyhydric alcohol.
- sorbitol was 0.005 part, the blackening time was short and the thermal stability was insufficient.
- Comparative Examples 8 to 10 do not contain PVA and contain polyglycerin as polyhydric alcohol (Comparative Example 8), polyglycerin (glycerin decamer, Comparative Example 9) or dipentaerythritol (Comparative Example 10).
- the evaluation result of a vinyl chloride composition is shown. When no PVA was contained, the blackening time was short and the thermal stability was insufficient.
- Comparative Example 11 shows the evaluation results of a polyvinyl chloride composition containing 1 part of PVA and 1 part of glycerol monostearate as a polyhydric alcohol.
- Glycerol monostearate has a hydroxyl group content of 9% by mass. Thus, when the hydroxyl group content of the polyhydric alcohol was low, the blackening time was short and the thermal stability was insufficient.
- Comparative Example 12 shows the evaluation results of a polyvinyl chloride composition containing 1 part of PVA and 1 part of polyglycerin (about 50-mer of glycerin) as a polyhydric alcohol.
- Polyglycerin (about 50-mer of glycerin) has a molecular weight of about 3,700. Thus, when the molecular weight of the polyhydric alcohol was large, the blackening time was short and the thermal stability was insufficient.
- Comparative Example 13 shows the evaluation results of a polyvinyl chloride composition containing 0.75 part of PVA, 0.25 part of sorbitol as a polyhydric alcohol, and 0.005 part of zinc stearate.
- the content of zinc stearate was 0.005 part, the blackening time was short and the thermal stability was insufficient.
- Comparative Example 14 shows the evaluation results of a polyvinyl chloride composition containing 0.75 part of PVA, 0.25 part of sorbitol as a polyhydric alcohol, and 10 parts of zinc stearate. When the content of zinc stearate was 10 parts, the blackening time was short and the thermal stability was insufficient.
- Example 15 PVA shown in Table 1 was obtained in the same manner as in Example 1 except that the alkali molar ratio was changed from 0.006 to 0.003 during saponification during the production of PVA. Using this PVA, a polyvinyl chloride composition was obtained in the same manner as in Example 1, and a sheet was formed in the same manner as in Example 1. In the same manner as in Example 1, the thermal stability test, the colorability test, and the adhesion occurrence evaluation of the adhesive were performed. The evaluation results are shown in Table 1.
- Comparative Example 15 shows the evaluation results of a polyvinyl chloride composition containing PVA having a saponification degree of 55 mol% and a polymerization degree of 320 and sorbitol as a polyhydric alcohol.
- the degree of saponification of PVA was 55 mol%, the blackening time was short and the thermal stability was not sufficient.
- the halogen atom-containing resin composition of the present invention when used, it has a sufficient thermal stability even when molded at a relatively low temperature, and therefore, the applicable molding temperature range is wide. Furthermore, the occurrence of adhesion of an adhesive to the inside of the extruder at the time of molding can be suppressed, and a molded product with less coloring is obtained, which is very significant.
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Abstract
Description
本発明で用いられるハロゲン原子含有樹脂としては、例えば、ポリ塩化ビニル、ポリ塩化ビニリデン、塩素化ポリ塩化ビニル、塩素化ポリオレフィン、塩化ビニル-酢酸ビニル共重合体等の塩素含有樹脂;臭素化ポリオレフィン等の臭素含有樹脂などが挙げられ、成形品の用途などに応じ、これらのうちの1種または2種以上を用いることができるが、入手のし易さや物性などの観点から、塩素含有樹脂が好ましく、ポリ塩化ビニルまたはポリ塩化ビニリデンがより好ましく、ポリ塩化ビニルがさらに好ましい。
本発明のハロゲン原子含有樹脂組成物に含有されるポリビニルアルコール(以下、「PVA」と略記することがある。)を前記ハロゲン原子含有樹脂に含有させる方法は特に限定されないが、ハロゲン原子含有樹脂を形成するための単量体の重合後に得られるハロゲン原子含有樹脂に添加することによって含有させることが好適である。該PVAは粉として、あるいは、水または有機溶剤に溶解させてハロゲン原子含有樹脂に添加することができる。該PVAをハロゲン原子含有樹脂を形成するための単量体の重合前や重合中に添加すると、該PVAが単量体および得られるハロゲン原子含有樹脂の分散剤として作用するため、該ハロゲン含有樹脂の平均粒子径や可塑剤吸収性等の品質に悪影響を及ぼすことがある。また、ハロゲン原子含有樹脂製造後の樹脂洗浄により該PVAがほとんど除去されることにより、ハロゲン原子含有樹脂組成物中のPVAの含有量が少なくなり、熱安定性が不十分となるおそれがある。
重合度=([η]×1000/8.29)(1/0.62)
本発明のハロゲン原子含有樹脂組成物に含有される多価アルコールを前記ハロゲン原子含有樹脂に含有させる方法は特に限定されないが、ハロゲン原子含有樹脂を形成するための単量体の重合後に得られるハロゲン原子含有樹脂に添加することによって含有させることが好適である。該多価アルコールは粉または粘調液体として、あるいは、水または有機溶剤に溶解させてハロゲン原子含有樹脂に添加することができる。
(ヒドロキシル基含有率)={(多価アルコール1分子に含まれるヒドロキシル基を構成する水素原子および酸素原子の合計原子量)/(多価アルコールの分子量)}×100
本発明のハロゲン原子含有樹脂組成物に含有される亜鉛化合物を前記ハロゲン原子含有樹脂に含有させる方法は特に限定されないが、ハロゲン原子含有樹脂を形成するための単量体の重合後に得られるハロゲン原子含有樹脂に添加することによって含有させることが好適である。該亜鉛化合物は粉として、あるいは、水または有機溶媒に溶解乃至分散させてハロゲン原子含有樹脂に添加することができる。
本発明のハロゲン原子含有樹脂組成物における、前記ハロゲン原子含有樹脂、前記PVA、前記多価アルコールおよび前記亜鉛化合物の合計の占める割合は、50~100質量%の範囲内であることが好ましく、70~100質量%の範囲内であることがより好ましく、80~100質量%の範囲内であることがさらに好ましい。
PVAの分析は、特に断らない限りJIS K6726に記載の方法に従って行った。
(ポリ塩化ビニルの製造)
重合度850、けん化度72モル%のポリビニルアルコールを塩化ビニルに対して600ppmに相当する量で脱イオン水に溶解させ、分散安定剤を調製した。このようにして得られた分散安定剤を、スケール付着防止剤NOXOL WSW(CIRS社製)が固形分として0.3g/m2になるように塗布されたグラスライニング製オートクレーブに仕込んだ。次いで、グラスライニング製オートクレーブにジイソプロピルパーオキシジカーボネートの70%トルエン溶液0.04部を仕込み、オートクレーブ内の圧力が0.0067MPaとなるまで脱気して酸素を除いた後、塩化ビニル30部を仕込み、オートクレーブ内の内容物を57℃に昇温して撹拌下に重合を開始した。重合開始時におけるオートクレーブ内の圧力は0.83MPaであった。重合を開始してから7時間経過後、オートクレーブ内の圧力が0.44MPaとなった時点で重合を停止し、未反応の塩化ビニルを除去した後、重合反応物を取り出し、65℃にて一晩乾燥を行い、ポリ塩化ビニル(PVC)を得た。
撹拌機、窒素導入口、添加剤導入口および開始剤添加口を備えた6L反応槽に酢酸ビニル900g、メタノール2,100gを仕込み、60℃に昇温した後30分間窒素バブリングにより系中を窒素置換した。上記の反応槽内温を60℃に調整し、2,2’-アゾビス(4-メトキシ-2,4-ジメチルバレロニトリル)2.3gを加えて重合を開始した。重合中は重合温度を60℃に維持し、5時間後に重合率が70%に達したところで冷却して重合を停止した。次いで、減圧下にて未反応の酢酸ビニルを除去し、ポリ酢酸ビニル(PVAc)のメタノール溶液を得た。濃度を30%に調整したPVAc溶液にアルカリモル比(NaOHのモル数/PVAc中のビニルエステル単位のモル数)が0.006となるようにNaOHメタノール溶液(10%濃度)を添加してけん化した。得られたPVAはメタノールで洗浄した。以上の操作により重合度320、けん化度80モル%のPVAを得た。
磁性ビーカーに、上記で得られたポリ塩化ビニル100部、上記で得られたPVAを0.75部、市販のソルビトールを0.25部、市販のステアリン酸亜鉛を1部、および市販のステアリン酸カルシウムを0.5部それぞれ加え混合し、ポリ塩化ビニル組成物を得た。
得られたポリ塩化ビニル組成物をテストロールにより160℃で5分間混練し、厚さ0.45mmのシートを作成した。
上記シートを50×70mmにカットし、得られたシート片をギヤーオーブン中に入れ、180℃の温度で完全に黒色になるまでの時間(黒化時間)を測定し、熱安定性の指標とした。評価結果を表1に示す。
上記のシートを45×30mmに複数カットし、得られたシート片を12~14枚重ね合わせ、185℃で5分間プレスして厚さ5mmの試験片を作製し、目視により着色性を比較し、以下の基準にしたがって判定した。評価結果を表1に示す。
A:着色がほとんどない。
B:わずかに着色が認められる。
C:黄色である。
D:黄褐色である。
上記のポリ塩化ビニル組成物混練時の、押し出し機内部等への粘着物の付着の発生度合を評価するためポリ塩化ビニル組成物の混練に使用した上記テストロールの表面を目視により観察し、テストロール表面への粘着物の付着の発生度合について、以下の基準に従って判定した。評価結果を表1に示す。
A:付着が全くない。
B:わずかに付着が認められる。
C:多量の付着が認められる。
使用する多価アルコールの種類、PVA、多価アルコールおよびステアリン酸亜鉛の含有量を表1に示すように変更したこと以外は実施例1と同様にしてポリ塩化ビニルを得て、実施例1と同様にしてシートを成形した。そして、実施例1と同様に熱安定性試験、着色性試験および粘着物の付着発生評価を行った。評価結果を表1に示す。
使用する多価アルコールの種類、PVA、多価アルコールおよびステアリン酸亜鉛の含有量を表1に示すように変更したこと以外は実施例1と同様にしてポリ塩化ビニルを得て、実施例1と同様にしてシートを成形した。そして、実施例1と同様に熱安定性試験、着色性試験および粘着物の付着発生評価を行った。評価結果を表1に示す。
実施例1において、PVAの製造の際のけん化時にアルカリモル比を0.006から0.003へ変更したこと以外は実施例1と同様の方法で表1に示すPVAを得た。このPVAを用いて実施例1と同様にしてポリ塩化ビニル組成物を得て、実施例1と同様にしてシートを成形した。そして、実施例1と同様に熱安定性試験、着色性試験および粘着物の付着発生評価を行った。評価結果を表1に示す。
Claims (6)
- ハロゲン原子含有樹脂100質量部に対して、けん化度が60~99.9モル%であり粘度平均重合度が100~1,000であるポリビニルアルコールを0.01~2.5質量部、分子量が2,000以下でありヒドロキシル基含有率が10質量%以上である多価アルコールを0.01~2.5質量部、および亜鉛化合物を0.01~5質量部含有するハロゲン原子含有樹脂組成物。
- ポリビニルアルコールと多価アルコールとの質量比が(ポリビニルアルコールの質量)/(多価アルコールの質量)=30/70~90/10を満たす請求項1に記載のハロゲン原子含有樹脂組成物。
- ポリビニルアルコールの粘度平均重合度が100~450である請求項1または2に記載のハロゲン原子含有樹脂組成物。
- ポリビニルアルコール、多価アルコールおよび亜鉛化合物を、ハロゲン原子含有樹脂に添加することによって含有させた請求項1~3のいずれか1項に記載のハロゲン原子含有樹脂組成物。
- ハロゲン原子含有樹脂100質量部に対して、けん化度が60~99.9モル%であり粘度平均重合度が100~1,000であるポリビニルアルコールを0.01~2.5質量部、分子量が2,000以下でありヒドロキシル基含有率が10質量%以上である多価アルコールを0.01~2.5質量部、および亜鉛化合物を0.01~5質量部添加する工程を有するハロゲン原子含有樹脂組成物の製造方法。
- 請求項1~4のいずれか1項に記載のハロゲン原子含有樹脂組成物からなる成形品。
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EP2636702B1 (en) | 2015-07-29 |
EP2636702A1 (en) | 2013-09-11 |
US9163138B2 (en) | 2015-10-20 |
EP2636702A4 (en) | 2014-03-05 |
CN103261311B (zh) | 2015-03-18 |
JPWO2013042267A1 (ja) | 2015-03-26 |
US20130253116A1 (en) | 2013-09-26 |
ES2549631T3 (es) | 2015-10-30 |
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