Disclosed is an ethylene-α-olefin-nonconjugated polyene copolymer rubber satisfying the following requirements (A) and (B): (A) A proportion of a cyclohexane insoluble component at 25° C. is from 0.3% to 50% by mass with respect to a mass of the ethylene-α-olefin-nonconjugated polyene copolymer rubber; and (B) A tan δ ratio calculated by the following equation:

tan δ ratio=tan δ (100° C., 5 cpm)/tan δ (100° C., 1000 cpm)

is from 3.0 to 20. The tan δ (100° C., 5 cpm) and tan δ (100° C., 1000 cpm) are a loss tangent at 100° C. and a frequency of 5 cpm and a loss tangent at 100° C. and a frequency of 1000 cpm, respectively.

Disclosed is an ethylene-α-olefin-nonconjugated polyene copolymer rubber satisfying the following requirements (A) and (B): (A) A proportion of a cyclohexane insoluble component at 25° C. is from 0.3% to 50% by mass with respect to a mass of the ethylene-α-olefin-nonconjugated polyene copolymer rubber; and (B) A tan δ ratio calculated by the following equation:

tan δ ratio=tan δ (100° C., 5 cpm)/tan δ (100° C., 1000 cpm)

is from 3.0 to 20. The tan δ (100° C., 5 cpm) and tan δ (100° C., 1000 cpm) are a loss tangent at 100° C. and a frequency of 5 cpm and a loss tangent at 100° C. and a frequency of 1000 cpm, respectively.

This invention relates to a hydrogenated hydrocarbon resin and a method of preparing the same, wherein the preparation process is simplified, material supply problems can be solved, and the hydrogenated hydrocarbon resin can be prepared using a catalyst, which is inexpensive, has a low odor and is easy to handle, thereby realizing a yield and a preparation process that enable real-world application thereof. The hydrogenated hydrocarbon resin prepared by the method of the invention has excellent compatibility and a low specific viscosity, and can thus be efficiently used as a tackifier or an adhesive in a variety of fields.

This invention relates to a hydrogenated hydrocarbon resin and a method of preparing the same, wherein the preparation process is simplified, material supply problems can be solved, and the hydrogenated hydrocarbon resin can be prepared using a catalyst, which is inexpensive, has a low odor and is easy to handle, thereby realizing a yield and a preparation process that enable real-world application thereof. The hydrogenated hydrocarbon resin prepared by the method of the invention has excellent compatibility and a low specific viscosity, and can thus be efficiently used as a tackifier or an adhesive in a variety of fields.

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.

Copolymers prepared by a reaction of (1) an unactivated olefin, (2) an activated olefin, and (3) a hydroxyl functional activated olefin and/or a hydroxyl functional unactivated olefin are described. The copolymers have a backbone of polar vinyl monomers and non-polar alkene monomers, with pendant hydroxyl functional groups. The copolymers are well suited for optically clear, pressure sensitive, polyurethane and/or barrier adhesives.

Copolymers prepared by a reaction of (1) an unactivated olefin, (2) an activated olefin, and (3) a hydroxyl functional activated olefin and/or a hydroxyl functional unactivated olefin are described. The copolymers have a backbone of polar vinyl monomers and non-polar alkene monomers, with pendant hydroxyl functional groups. The copolymers are well suited for optically clear, pressure sensitive, polyurethane and/or barrier adhesives.

The invention relates to an efficient process for the preparation of isoolefin polymers such as polyisobutene or butyl rubber by polymerization of a liquid medium comprising the monomer(s) and ethane or carbon dioxide that is substantially dissolved therein.

The invention relates to an efficient process for the preparation of isoolefin polymers such as polyisobutene or butyl rubber by polymerization of a liquid medium comprising the monomer(s) and ethane or carbon dioxide that is substantially dissolved therein.