Copolymers having a substantially heterogeneous composition distribution and strong UV absorption are the direct reaction product of an isoolefin and at least one terpene having the molecular formulae of (C.sub.5H.sub.8)n where n is equal to or greater than two, and optionally additional monomers. More specifically, the invention relates to copolymers of isobutylene and alloocimene that exhibit thermoplastic elastomeric properties and exhibit strong filler interaction. The present invention also relates to methods for producing copolymers of at least one isoolefin and at least one terepene by a two-phase living polymerization that produces a substantially linear triblock and multiblock copolymer having substantially heterogeneous distribution of the isoolefin and terpene units.

The present invention relates to a method for the synthesis and utilization of block copolymer can that form sub-10 nm lamella nanostructures. Such methods have many uses including multiple applications in the semiconductor industry including production of templates for nanoimprint lithography.

The present invention relates to a method for the synthesis and utilization of block copolymer can that form sub-10 nm lamella nanostructures. Such methods have many uses including multiple applications in the semiconductor industry including production of templates for nanoimprint lithography.

An electrophoresis dispersion liquid according to the aspect of the invention contains at least one type of electrophoretic particles and a dispersion medium and, in the electrophoresis dispersion liquid, the content of the electrophoretic particles is 10 weight % or more to 30 weight % or less. Furthermore, the electrophoretic particles have base particles and a polymer (particle surface treatment agent) linked with the base particles and, in the electrophoretic particles, the content of the polymer is 5 weight % or more to 15 weight % or less.

An electrophoresis dispersion liquid according to the aspect of the invention contains at least one type of electrophoretic particles and a dispersion medium and, in the electrophoresis dispersion liquid, the content of the electrophoretic particles is 10 weight % or more to 30 weight % or less. Furthermore, the electrophoretic particles have base particles and a polymer (particle surface treatment agent) linked with the base particles and, in the electrophoretic particles, the content of the polymer is 5 weight % or more to 15 weight % or less.

A method for the preparation of block copolymers including at least one high vinyl segment, the method comprising (i) charging into a reactor a diene monomer in a hydrocarbon solvent, a catalytically effective amount of anionic initiator, and an oligomeric oxolanyl propane, whereby the reactor is optionally cooled; (ii) allowing the diene monomer to polymerize at a peak polymerization temperature of at least about 18° C. and less than about 60° C. to form a first block where the vinyl content is at least about 50 percent by weight; (iii) after step (ii), charging into the reactor a vinyl aromatic monomer, whereby the reactor is optionally heated to a temperature up to about 60° C.; (iv) allowing the vinyl aromatic monomer to polymerize to form a second block; and (v) optionally charging into the reactor a quenching agent.

A method for the preparation of block copolymers including at least one high vinyl segment, the method comprising (i) charging into a reactor a diene monomer in a hydrocarbon solvent, a catalytically effective amount of anionic initiator, and an oligomeric oxolanyl propane, whereby the reactor is optionally cooled; (ii) allowing the diene monomer to polymerize at a peak polymerization temperature of at least about 18° C. and less than about 60° C. to form a first block where the vinyl content is at least about 50 percent by weight; (iii) after step (ii), charging into the reactor a vinyl aromatic monomer, whereby the reactor is optionally heated to a temperature up to about 60° C.; (iv) allowing the vinyl aromatic monomer to polymerize to form a second block; and (v) optionally charging into the reactor a quenching agent.

The present application provides a block copolymer and uses thereof. The block copolymer of the present application exhibits an excellent self-assembling property or phase separation property, can be provided with a variety of required functions without constraint and, especially, etching selectivity can be secured, making the block copolymer effectively applicable to such uses as pattern formation.

The present application provides a block copolymer and uses thereof. The block copolymer of the present application exhibits an excellent self-assembling property or phase separation property, can be provided with a variety of required functions without constraint and, especially, etching selectivity can be secured, making the block copolymer effectively applicable to such uses as pattern formation.

The present application provides a block copolymer and uses thereof. The block copolymer of the present application exhibits an excellent self-assembling property or phase separation property, and can be provided with a variety of required functions without constraint.