Provided is a method for producing a butene polymer, comprising: a polymerization step of performing polymerization reaction by contacting a raw material component comprising 20% by mass or more of isobutene with a Lewis acid catalyst; and a distillation step of subjecting a solution to be treated containing a reaction product of the polymerization reaction and a butene oligomer added to the reaction product to distillation treatment to obtain the butene polymer, wherein an amount of the butene oligomer added is 25 parts by mass or larger with respect to 100 parts by mass of the reaction product.

Provided is a method for producing a butene polymer, comprising: a polymerization step of performing polymerization reaction by contacting a raw material component comprising 20% by mass or more of isobutene with a Lewis acid catalyst; and a distillation step of subjecting a solution to be treated containing a reaction product of the polymerization reaction and a butene oligomer added to the reaction product to distillation treatment to obtain the butene polymer, wherein an amount of the butene oligomer added is 25 parts by mass or larger with respect to 100 parts by mass of the reaction product.

The invention relates to a process for preparing aminomethylated bead polymers using condensed formaldehydes and carbonyl halides.

The present disclosure relates to the field of rubbers. The halogenated isobutylene isoprene rubber is prepared by polymerizing isoprene monomer and isobutylene monomer, followed by halogenation using a halogenating agent. This process of the present disclosure is simple, energy efficient and economic.

The present disclosure relates to the field of rubbers. The halogenated isobutylene isoprene rubber is prepared by polymerizing isoprene monomer and isobutylene monomer, followed by halogenation using a halogenating agent. This process of the present disclosure is simple, energy efficient and economic.

A spherical carrier for olefin polymerization catalysts has at least one magnesium-containing compound having a structure represented by formula (1). The spherical carrier has a relatively good particle morphology, and substantially no abnormally morphological particles will appear. A method for preparing the spherical carrier can be used to prepare a carrier having a small particle size and greatly expands the particle size range of the preparable carrier. When the catalyst prepared by using the carrier is used for olefin polymerization, polymerization activity is good, substantially no abnormally morphological material is present, and hydrogen response is good.

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The present invention relates to a cascade process useful for (fast) ionic polymerisation of liquid monomer(s) containing reaction mixture for the production of the corresponding polymer(s).

The present invention relates to a cascade process useful for (fast) ionic polymerisation of liquid monomer(s) containing reaction mixture for the production of the corresponding polymer(s).

A system for precision polymerization is disclosed comprising at least one Michael-type monomer and a metal compound MR.sup.1R.sup.2R.sup.3 as sole catalyst and initiator, wherein M is aluminum, gallium or indium, each of R.sup.1, R.sup.2, and R.sup.3 independently is CI, F, I, Br, linear, branched or cyclic alkyl, heterocycloalkyl, linear, branched or cyclic alkenyl, heterocycloalkenyl, linear, branched, or cyclic alkenyl, linear, branched, or cyclic alkinyl, heterocycloalkinyl, linear, branched, or cyclic alkoxy, aryl, heteroaryl, aryloxy, silyl, metallocenyl, nitro, nitroso, hydroxy, or carboxyl, wherein each alkyl, alkenyl, alkinyl or alkoxy group independently has up to 12 carbon atoms, wherein each aryl or heteroaryl independently has 5 to 14 ring atoms, wherein any hetero group has at least one hetero atom selected from the group consisting of O, S, and N, wherein each alkyl, alkenyl, alkinyl or alkoxy, heterocycloalkyl, heterocycloalkenyl, heterocycloalkinyl, aryl, heteroaryl, aryloxy group can be substituted by 1 up to the highest possible number of halogen atoms, or at least one electron-donating or electron-withdrawing group; with the proviso that not all three groups R.sup.1, R.sup.2, and R.sup.3 are halogen, hydroxy, or alkoxy or wherein two of R.sup.1, R.sup.2, and R.sup.3 together with M form a substituted or unsubstituted cyclic or heterocyclic group having 3 to 6 atoms, wherein a heterocyclic group has at least one hetero atom selected from the group consisting of O, S, and N; as well as processes for preparing polymers and the polymers obtained therewith.

A star block copolymer and a thermoplastic elastomer including plurality of the star block copolymers and a method of making both is taught. The star block copolymers of the present invention include a core component having either a styrene oligomer or -methyl styrene oligomer, wherein arms emanate from the core component and the arms are poly(isobutylene-block-styrene) diblock copolymers.