A method for producing a block copolymer composition including a diblock copolymer and a triblock copolymer each containing a polyolefin-based block and a polystyrene-based block is disclosed herein. In some embodiments, the method includes reacting an organic zinc compound with one or more kinds of olefin-based monomers in the presence of a transition metal catalyst to form an intermediate having an olefin-based polymer block, reacting the intermediate styrene-based monomer in the presence of an alkyllithium compound to form a product having a styrene-based polymer block, and reacting the product with water, oxygen, or an organic acid to form a block copolymer wherein the number of moles of the alkyllithium compound used to form the product is larger than the number of moles of the organic zinc compound used to form the intermediate.

A method for producing a block copolymer composition including a diblock copolymer and a triblock copolymer each containing a polyolefin-based block and a polystyrene-based block is disclosed herein. In some embodiments, the method includes reacting an organic zinc compound with one or more kinds of olefin-based monomers in the presence of a transition metal catalyst to form an intermediate having an olefin-based polymer block, reacting the intermediate styrene-based monomer in the presence of an alkyllithium compound to form a product having a styrene-based polymer block, and reacting the product with water, oxygen, or an organic acid to form a block copolymer wherein the number of moles of the alkyllithium compound used to form the product is larger than the number of moles of the organic zinc compound used to form the intermediate.

A block copolymer composition is disclosed herein. In some embodiments, the block copolymer composition includes a diblock copolymer and a triblock copolymer each including a polyolefin-based block and a polystyrene-based block. The diblock copolymer is present at less than or equal to 19% , based on total weight of the block copolymer composition, the polyolefin-based block includes a repeating unit represented by Formula 1, and the polystyrene-based block includes one or more of Formulas 2 and 3: ##STR00001## wherein R.sub.1 is hydrogen, C3 to C20 alkyl, or C3 to C20 alkyl substituted with silyl, R.sub.2 and R.sub.3 are each independently C6 to C20 aryl, or C6 to C20 aryl substituted with halogen, C1 to C12 alkyl, or C3 to C12 cycloalkyl, n is an integer from 1 to 10,000, and l and m are each independently an integer from 10 to 1,000.

The present invention relates to a polyolefin-polystyrene multi-block copolymer having a structure comprising a polyolefin block and polystyrene blocks bonded to both ends of the polyolefin block, to an organozinc compound for preparing the same, and a method for preparing the polyolefin-polystyrene multi-block copolymer.

Techniques regarding catalyzing one or more ring-opening polymerizations within one or more flow reactors using one or more organometallic bases are provided. For example, one or more embodiments described herein can comprise a method, which can include forming a polymer, via a ring-opening polymerization within a flow reactor, from a cyclic monomer in the presence of an organometallic base and a primary alcohol initiator.

Techniques regarding catalyzing one or more ring-opening polymerizations within one or more flow reactors using one or more organometallic bases are provided. For example, one or more embodiments described herein can comprise a method, which can include forming a polymer, via a ring-opening polymerization within a flow reactor, from a cyclic monomer in the presence of an organometallic base and a primary alcohol initiator.

Techniques regarding catalyzing one or more ring-opening polymerizations within one or more flow reactors using one or more organometallic bases are provided. For example, one or more embodiments described herein can comprise a method, which can include forming a polymer, via a ring-opening polymerization within a flow reactor, from a cyclic monomer in the presence of an organometallic base and a primary alcohol initiator.

Techniques regarding catalyzing one or more ring-opening polymerizations within one or more flow reactors using one or more organometallic bases are provided. For example, one or more embodiments described herein can comprise a method, which can include forming a polymer, via a ring-opening polymerization within a flow reactor, from a cyclic monomer in the presence of an organometallic base and a primary alcohol initiator.

A composition comprising vinyl-terminated polyethylene having an Mn from about 200 g/mol to about 10,000 g/mol; and a comb polyolefin having polyethylene arms attached to a random copolymer backbone, said backbone including units derived from an alpha-olefin having 3 or more carbon atoms, where the polyethylene arms have an Mn from about 200 g/mol to about 10,000 g/mol, and where the comb polyolefin has an Mp from about 7,500 to about 400,000 g/mol.

A composition comprising vinyl-terminated polyethylene having an Mn from about 200 g/mol to about 10,000 g/mol; and a comb polyolefin having polyethylene arms attached to a random copolymer backbone, said backbone including units derived from an alpha-olefin having 3 or more carbon atoms, where the polyethylene arms have an Mn from about 200 g/mol to about 10,000 g/mol, and where the comb polyolefin has an Mp from about 7,500 to about 400,000 g/mol.