JP6396492B2 - 中間ブロックスルホン化ブロックコポリマーの水性エマルジョンの調製方法 - Google Patents
中間ブロックスルホン化ブロックコポリマーの水性エマルジョンの調製方法 Download PDFInfo
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
- C08J3/03—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media
- C08J3/07—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media from polymer solutions
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F212/00—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 aromatic carbocyclic ring
- C08F212/02—Monomers containing only one unsaturated aliphatic radical
- C08F212/04—Monomers containing only one unsaturated aliphatic radical containing one ring
- C08F212/14—Monomers containing only one unsaturated aliphatic radical containing one ring substituted by heteroatoms or groups containing heteroatoms
- C08F212/30—Sulfur
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2353/00—Characterised by the use of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Graft Or Block Polymers (AREA)
- Adhesives Or Adhesive Processes (AREA)
Description
a)非極性溶媒中の前記中間ブロックスルホン化スチレン系ブロックコポリマーのセメントを準備する工程であって、非極性溶媒が49から99℃の沸点を有する炭化水素化合物またはこのような化合物の混合物である工程;
b)工程a)のセメントを共溶媒と混合して混合物を形成する工程;
c)工程b)の混合物を、場合により乳化剤の存在下で、水によって乳化してエマルジョンを製造する工程;
d)炭化水素溶媒と、場合により共溶媒をエマルジョンから除去して水性エマルジョンを製造する工程
を含み、非極性溶媒が2.0(√MPaで表す)未満のハンセン極性パラメータ(δp)を有し、共溶媒が2.8から15の範囲の、好ましくは5.0から12の範囲のハンセン極性パラメータ(δp)および4.0から27(√MPaで表す)の範囲のハンセン水素結合パラメータ(δh)を有する極性非プロトン性溶媒または極性プロトン性溶媒である方法を提供する。好ましくは、共溶媒は最高99℃の沸点を有し、これにより水性エマルジョンは、ほとんどまたは全く(有機)溶媒を用いずに提供され得る。
a.各Aブロックは、独立して、1,000から60,000、より好ましくは5,000から40,000、なおより好ましくは7,000から20,000の見かけの数平均モル質量を有するポリマーブロックであり;および/または
b.各Dブロックは、存在する場合、独立して、1,000から60,000、より好ましくは2,000から40,000、なおより好ましくは5,000から20,000の見かけの数平均モル質量を有するポリマーブロックであり;および/または
c.各Bブロックは、独立して、10,000から300,000、より好ましくは15,000から200,000、なおより好ましくは19,000から100,000の見かけの数平均モル質量を有するポリマーブロックである。
上の融合助剤と共に、または融合助剤とは別に、エマルジョンに各種の他の添加剤をこれらの普通の量で添加してよい。このような添加剤としては、顔料、酸化防止剤、安定剤、不凍液、殺生物剤、触媒などが挙げられる。
MD9200溶液20グラムを水30グラムとT25内で13500rpmにて混合した。高温、減圧下で溶媒をストリップ除去した後、固形分7%mおよび平均粒径2.64マイクロメートルの安定なエマルジョンを得た。
実験1を繰り返した。MD9200溶液20グラムを無極性溶媒(シクロヘキサン、トルエン)7.5グラムおよび水30グラムとT25内で13500rpmにて混合した。溶媒および共溶媒の大部分を高温、減圧下でストリップ除去した後の結果を下の表に示す。希釈(実験2a)または無極性溶媒の使用により、安定なエマルジョンが得られることがわかる。しかし、粒度に関する結果は、あまり十分でない。
実験1を繰り返した。MD9200溶液20グラムを共溶媒(メチルエチルケトン)7.5グラムおよび水30グラムとT25内で13500rpmにて混合した。高温、減圧下で溶媒および共溶媒の大部分をストリップ除去した後、固形分7%mおよび平均粒径0.76マイクロメートルの安定なエマルジョンを得た。
異なる共溶媒を用いて実施例3を繰り返した。結果を下の表に示す。本明細書で定義するようなハンセン要件を満たす共溶媒を用いると、平均粒度が著しく低減される。特に1−プロパノールにより、優れた結果が得られる。
実験3を繰り返した。MD9200溶液20グラムをMEK 7.5グラムならびにそれぞれ界面活性剤のX100 0.2グラムまたはSDS 0.2グラム)および水30グラムとT25内で13500rpmにて混合した。溶媒および共溶媒の大部分を高温、減圧下でストリップ除去した後の結果を下の表に示す。優れた結果が得られ、共溶媒および界面活性剤も組み合わせて使用してよいことが示されている。
実験1および3を繰り返したが、ここではMD9500を用いた。適正な溶媒の添加による改善が再現される。
Claims (1)
- 少なくとも2種の非スルホン化ポリマー末端ブロックAおよび少なくとも1種のスルホン化ブロックBを含む中間ブロックスルホン化スチレン系ブロックコポリマーの水性エマルジョンを調製する方法であって、以下の:
a)非極性溶媒中の前記中間ブロックスルホン化スチレン系ブロックコポリマーのセメントを準備する工程であって、前記非極性溶媒が100℃未満の沸点を有する5から12個の炭素原子を含む炭化水素化合物またはこのような化合物の混合物である工程;
b)工程a)のセメントを共溶媒と混合して混合物を形成する工程;
c)工程b)の混合物を、乳化剤の存在下で、水によって乳化してエマルジョンを製造する工程;
d)炭化水素溶媒と、場合により共溶媒をエマルジョンから除去して水性エマルジョンを製造する工程
を含み、前記非極性溶媒が2.0(√MPaで表す)未満のハンセン極性パラメータ(δp)を有し、前記共溶媒が2.8から15の範囲のハンセン極性パラメータ(δp)および4.0から27(√MPaで表す)の範囲のハンセン水素結合パラメータ(δh)を有する極性非プロトン性溶媒または極性プロトン性溶媒である方法。
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