Provided is a coating material composition that enables an efficient repair operation of a coating film after coating, a (meth)acrylic copolymer that is suitable for obtaining the coating material composition, and a coated article and a method for forming a multilayer coating film using the coating material composition. The (meth)acrylic copolymer includes: a constituent unit derived from a macromonomer (a); and a constituent unit derived from a vinyl monomer (b), a hydroxyl value of the (meth)acrylic copolymer is equal to or greater than 120 mgKOH/g and equal to or less than 260 mgKOH/g, and the content of a constituent unit that has a primary hydroxyl group of the (meth)acrylic copolymer is equal to or less than 30 parts by mass with respect to 100 parts by mass of the constituent unit derived from the macromonomer (a) and the constituent unit derived from the vinyl monomer (b).

A vulcanizable composition comprising rubber component, a filler, and a curing agent, where the rubber component includes a block copolymer of polybutadiene and polyisoprene, and where the block copolymer has a cis content of at least 90%.

A vulcanizable composition comprising rubber component, a filler, and a curing agent, where the rubber component includes a block copolymer of polybutadiene and polyisoprene, and where the block copolymer has a cis content of at least 90%.

The disclosure relates to self-disinfecting, stand-alone coating material for surfaces prone to microbial contamination. The coating material is selected from a midblock-sulfonated pentablock copolymer (s-PBC) and a midblock-sulfonated triblock copolymer. The block copolymer has a configuration A-B-A or A-D-B-D-A, with two unsubstituted styrene end blocks A, an interior styrenic polymer block B carrying sulfonyl groups with a degree of sulfonation of at least 15 mol %, and interior blocks D if present being a polymerized 1,3-butadiene or isoprene which is subsequently hydrogenated. In embodiments, the medium containing the microbes in contact with the coating material has a bulk pH of <2.0 for at least 99.9999% of the microbes to be killed within 5 minutes. The coating material can be reactivated by periodic exposure to acidic solutions to bring the bulk pH of the medium containing the microbes to be <2.0.

The disclosure relates to self-disinfecting, stand-alone coating material for surfaces prone to microbial contamination. The coating material is selected from a midblock-sulfonated pentablock copolymer (s-PBC) and a midblock-sulfonated triblock copolymer. The block copolymer has a configuration A-B-A or A-D-B-D-A, with two unsubstituted styrene end blocks A, an interior styrenic polymer block B carrying sulfonyl groups with a degree of sulfonation of at least 15 mol %, and interior blocks D if present being a polymerized 1,3-butadiene or isoprene which is subsequently hydrogenated. In embodiments, the medium containing the microbes in contact with the coating material has a bulk pH of <2.0 for at least 99.9999% of the microbes to be killed within 5 minutes. The coating material can be reactivated by periodic exposure to acidic solutions to bring the bulk pH of the medium containing the microbes to be <2.0.

The present invention relates to a composition comprising components a), b) and c). The component a) is a block copolymer or a blend of block copolymers. The component b) is a low T.sub.g additive selected from the group consisting of an oligo random oligo random copolymer b-1), an oligo diblock copolymer b-2), an oligo diblock copolymer b-3) and a mixture of at least two of these. The component c) is a is a spin casting organic solvent. The invention also pertains to the use of said compositions in directed self-assembly. The invention further pertains to the novel oligo diblock copolymer b-2) which is an oligo diblock copolymer of block A-b) and block B-b), wherein block A-b) is a random copolymer of repeat units having structures (III), and (IV and block B-b) is a random copolymer of repeat units having structures (V), and (VI). Formulas (III), (IV), (V), (VI).

##STR00001##

The present invention relates to a composition comprising components a), b) and c). The component a) is a block copolymer or a blend of block copolymers. The component b) is a low T.sub.g additive selected from the group consisting of an oligo random oligo random copolymer b-1), an oligo diblock copolymer b-2), an oligo diblock copolymer b-3) and a mixture of at least two of these. The component c) is a is a spin casting organic solvent. The invention also pertains to the use of said compositions in directed self-assembly. The invention further pertains to the novel oligo diblock copolymer b-2) which is an oligo diblock copolymer of block A-b) and block B-b), wherein block A-b) is a random copolymer of repeat units having structures (III), and (IV and block B-b) is a random copolymer of repeat units having structures (V), and (VI). Formulas (III), (IV), (V), (VI).

##STR00001##

A polymer production method whereby: a flow reactor comprising a flow path wherein a plurality of liquids can be mixed is used; and a monomer is anionically polymerized in the presence of an initiator. The flow reactor comprises a mixer for mixing two liquids, said mixer comprising either a joint member having a double pipe therein or a static mixer member.

A polymer production method whereby: a flow reactor comprising a flow path wherein a plurality of liquids can be mixed is used; and a monomer is anionically polymerized in the presence of an initiator. The flow reactor comprises a mixer for mixing two liquids, said mixer comprising either a joint member having a double pipe therein or a static mixer member.

The present application relates to an amphiphilic polymer and a method for producing the same. The present application also relates to micelles comprising the amphiphilic polymer and a method for producing the same. The amphiphilic polymer of the present application can have excellent dispersion properties while effectively encapsulating the drug.