JP7511634B2 - 塩化ビニル-酢酸ビニル共重合体ラテックスの製造方法 - Google Patents
塩化ビニル-酢酸ビニル共重合体ラテックスの製造方法 Download PDFInfo
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- JP7511634B2 JP7511634B2 JP2022517913A JP2022517913A JP7511634B2 JP 7511634 B2 JP7511634 B2 JP 7511634B2 JP 2022517913 A JP2022517913 A JP 2022517913A JP 2022517913 A JP2022517913 A JP 2022517913A JP 7511634 B2 JP7511634 B2 JP 7511634B2
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- vinyl chloride
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- 238000006116 polymerization reaction Methods 0.000 claims description 74
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- 229910000365 copper sulfate Inorganic materials 0.000 description 3
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 3
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- XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 description 2
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- 150000005215 alkyl ethers Chemical class 0.000 description 1
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- 229910001870 ammonium persulfate Inorganic materials 0.000 description 1
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- DQXBYHZEEUGOBF-UHFFFAOYSA-N but-3-enoic acid;ethene Chemical compound C=C.OC(=O)CC=C DQXBYHZEEUGOBF-UHFFFAOYSA-N 0.000 description 1
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- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
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- 229920001200 poly(ethylene-vinyl acetate) Polymers 0.000 description 1
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- WBHQBSYUUJJSRZ-UHFFFAOYSA-M sodium bisulfate Chemical compound [Na+].OS([O-])(=O)=O WBHQBSYUUJJSRZ-UHFFFAOYSA-M 0.000 description 1
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- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 description 1
- 229940035044 sorbitan monolaurate Drugs 0.000 description 1
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
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- C08F2/26—Emulsion polymerisation with the aid of emulsifying agents anionic
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F14/00—Homopolymers and 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
- C08F14/02—Monomers containing chlorine
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- C08F14/06—Vinyl chloride
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- C08J3/03—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media
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- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
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- C09D11/106—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
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- C09D127/00—Coating compositions based on 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; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on 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; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/04—Coating compositions based on 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; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C09D127/06—Homopolymers or copolymers of vinyl chloride
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Description
本出願は2019年9月19日付韓国特許出願第10-2019-0115256号に基づいた優先権の利益を主張し、当該韓国特許出願の文献に開示された全ての内容は本明細書の一部として含まれる。
本発明は、塩化ビニル-酢酸ビニル共重合体ラテックスの製造方法に関するものである。
以下、図面を参照して本発明の一実施形態を詳しく説明する。
本発明の一実施形態では、水性分散媒および乳化剤の存在下で塩化ビニル単量体および酢酸ビニル単量体を乳化重合させ、前記塩化ビニル単量体および前記乳化剤の供給方法を最適化することによって、重合度と分子量の高い塩化ビニル-酢酸ビニル共重合体粒子が含まれているラテックスを得る方法を提供する。
以下、前記一実施形態をより詳しく説明する。
具体的に、図1の装置100は、攪拌機111およびマグネチックドライブ(Magnetic drive)112を有する反応器110に、原料供給ポンプ121~123が連結されたものであってもよい。
本発明の他の一実施形態では、前述の一実施形態の製造方法によって製造されて、水性分散媒;および前記水性分散媒に分散したビニルクロライド-ビニルアセテート共重合体粒子;を含む、塩化ビニル-酢酸ビニル共重合体ラテックスを提供する。
前記水性製品の範囲は、インク、ペイント、コーティング剤、接着剤などを含む生活および産業用素材であれば特に制限されない。
(1)攪拌機を有する5L容量のオートクレーブ(Autoclave)反応器に、反応させようとする酢酸ビニル単量体の全量を供給して反応を準備した。この工程で、乳化剤も一部供給した。
前記乳化剤供給終了後、前記反応器内圧が塩化ビニル単量体(Vinyl Chloride Monomer)連続供給中最高圧力に対比して2~4kg/cm2降下すると、前記開始剤の供給を終了した。
実施例1の(1)および(2)と同一な過程で、反応器に酢酸ビニル単量体の全量およびこれと反応させようとする塩化ビニル単量体の一部を供給し、乳化剤の存在下で開始剤を連続的に供給して重合反応を開始した。
実施例1の(1)および(2)と同一な過程で、反応器に酢酸ビニル単量体の全量およびこれと反応させようとする塩化ビニル単量体の一部を供給し、乳化剤の存在下で開始剤を連続的に供給して重合反応を開始した。
攪拌機を有する5L容量のオートクレーブ(Autoclave)反応器に、乳化剤および開始剤の存在下で、酢酸ビニル単量体の全量および塩化ビニル単量体の全量を供給して重合反応させた。
実施例1の(1)および(2)と同一な過程で、反応器に酢酸ビニル単量体の全量およびこれと反応させようとする塩化ビニル単量体の一部を供給し、乳化剤の存在下で開始剤を連続的に供給して重合反応を開始した。
前記実施例および比較例からそれぞれ製造されたラテックスを次のような方法で評価し、その評価結果を表1に記録した。
111:攪拌機
112:マグネチックドライブ
121~123:原料供給ポンプ
Claims (7)
- 反応器に水性分散媒、乳化剤、酢酸ビニル単量体および塩化ビニル単量体を供給して、重合反応を準備する段階;s
前記準備された反応器に開始剤を供給して、重合反応を開始する段階;および
前記重合反応が開始された反応器に前記塩化ビニル単量体および前記乳化剤をそれぞれ連続的に追加供給する段階;を含み、
反応させようとする塩化ビニル単量体の全量(100重量%)中、20~30重量%は前記重合反応を準備する段階で一括供給し、残部は重合反応開始後に時間当り供給量を増加させながら連続的に供給し、
前記塩化ビニル単量体および前記乳化剤の追加供給時、それぞれ独立して時間当り供給量を増加させ、
前記塩化ビニル単量体の追加供給時、前記塩化ビニル単量体の追加供給を開始した時点から、23分までは、時間当り供給量を2ml~3mlに制御しながら1次追加供給し、1次追加供給完了時点から、135分までは、時間当り供給量を4ml~5mlに制御しながら2次追加供給し、2次追加供給完了時点から、68分までは、時間当り供給量を5ml~6mlに制御しながら3次追加供給し、
前記乳化剤の追加供給時、前記乳化剤の追加供給を開始した時点から、107分までは、時間当り供給量を0.4ml~0.8mlに制御しながら1次追加供給し、1次追加供給完了時点から、161分までは、時間当り供給量を0.7ml~1.1mlに制御しながら2次追加供給し、
全体重合反応時間が300分~400分である、
塩化ビニル-酢酸ビニル共重合体ラテックスの製造方法。 - 反応させようとする塩化ビニル単量体および酢酸ビニル単量体の重量比は、
60:40~80:20(塩化ビニル単量体の全量:酢酸ビニル単量体の全量)である、
請求項1に記載の塩化ビニル-酢酸ビニル共重合体ラテックスの製造方法。 - 前記準備された反応器の内部温度が40~80℃に到達した後、
前記開始剤を供給の供給を開始する、
請求項1に記載の塩化ビニル-酢酸ビニル共重合体ラテックスの製造方法。 - 前記塩化ビニル単量体の追加供給は、
全体重合反応時間の1/8以上1/6以下である時点に開始する、
請求項1に記載の塩化ビニル-酢酸ビニル共重合体ラテックスの製造方法。 - 前記乳化剤の追加供給は、
全体重合反応時間の1/7以上1/5以下である時点に開始する、
請求項4に記載の塩化ビニル-酢酸ビニル共重合体ラテックスの製造方法。 - 前記重合反応の開始時点から終了時点に至るまで、時間当り供給量を一定に維持しながら前記開始剤を連続供給する、
請求項1に記載の塩化ビニル-酢酸ビニル共重合体ラテックスの製造方法。 - 前記重合反応の終了時点は、前記塩化ビニル単量体および前記乳化剤の追加供給後に到達した前記反応器の最高圧力に対比して、前記反応器の内部圧力が2~4kgf/cm2だけ低くなる時点である、
請求項1に記載の塩化ビニル-酢酸ビニル共重合体ラテックスの製造方法。
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