A sulfur-crosslinkable rubber mixture comprising at least the following constituents: at least one diene rubber and at least one liquid, linear modified diene polymer A, modified with a functional group of formula I) at only one chain end, the number of functional groups per molecule being on average from 0.8 to 1
(R.sup.1R.sup.2R.sup.3)Si—X—NH—C(═O)—O—,  I)
where R.sup.1, R.sup.2 and R.sup.3 independently of one another are selected from methoxy groups, ethoxy groups, phenoxy groups, methyl groups, ethyl groups and phenyl groups, with in each case at least one of the groups R.sup.1, R.sup.2 and R.sup.3 being a methoxy group, an ethoxy group or a phenoxy group, and where X is a divalent alkyl group having 1 to 6 carbon atoms.

A composition includes: at least one polymer represented by formula (1), formula (2), or both; and a solvent. A.sup.1 and A.sup.2 are each independently a structural unit having 2 or more carbon atoms; a plurality of A's are the same or different and a plurality of A.sup.2s are the same or different; n1 and n2 are each independently an integer of 2 to 500; R.sup.1, R.sup.2, and R.sup.3 are each independently an organic group having 1 or more carbon atoms, or R.sup.1 and R.sup.2 taken together represent a ring together with X.sup.1, Y.sup.1, and P; R.sup.1 and R.sup.2 are the same or different; X.sup.1, Y.sup.1, and Y.sup.2 are each independently a single bond, —O—, or —NR.sup.4—; R.sup.4 is an organic group having 1 or more carbon atoms; and Z.sup.1 and Z.sup.2 are each independently hydrogen or an organic group having 1 to 15 carbon atoms.

##STR00001##

Disclosed are a rubber polymer including a unit structure derived from a conjugated diene-based monomer and at least one of compounds represented by Chemical Formula 1 to Chemical Formula 4, a method of preparing the same, and a rubber composition including the same.

A method of producing a powder mass for a lithium battery, the method comprising: (a) providing a solution containing a sulfonated elastomer dissolved in a solvent or a precursor in a liquid form or dissolved in a solvent; (b) dispersing a plurality of particles of a cathode active material in the solution to form a slurry; and (c) dispensing the slurry and removing the solvent and/or polymerizing/curing the precursor to form the powder mass, wherein the powder mass comprises multiple particulates and at least a particulate comprises one or a plurality of particles of a cathode active material being encapsulated by a thin layer of sulfonated elastomer having a thickness from 1 nm to 10 μm, a fully recoverable tensile strain from 2% to 800%, and a lithium ion conductivity from 10.sup.−7 S/cm to 5×10.sup.−2 S/cm at room temperature.

Provided is a rubber composition having excellent breaking strength. The rubber composition contains an inverse vulcanizate containing 10 mass % or more of carbon atoms and 30 mass % or more of sulfur atoms.

Provided is a rubber composition having excellent breaking strength. The rubber composition contains an inverse vulcanizate containing 10 mass % or more of carbon atoms and 30 mass % or more of sulfur atoms.

A method for preparing a modified conjugated diene-based polymer is provided. The method is characterized in adding a polyoxyethylene phosphate ester-based compound having a specific structure together with sulfur chloride modifier during modification, by which modification reproducibility may be markedly improved, stable process may be performed, the changing degree of the physical properties, specifically a Mooney viscosity increasing ratio and the degree of branching of a modified conjugated diene-based polymer according to modification conditions may be anticipated, and the changing degree of a Mooney viscosity increasing ratio and the degree of branching may be easily controlled by controlling modification conditions.

A method for preparing a modified conjugated diene-based polymer having excellent compounding properties and improved processability is disclosed herein. According to the method, a first polymer including a functional group is prepared using a modifier represented by Formula 1, and the first polymer is mixed with a sulfur halide. A modified conjugated diene-based polymer having excellent affinity with a filler, excellent compounding properties such as tensile properties and viscoelasticity properties, and excellent compounding processability, may be prepared.

An organic polymer comprising an organic polymer fragment and at least one S-alkylsilyl hydrocarbonthioate group or at least one S-alkylstannyl hydrocarbonthioate group bonded to the backbone of the organic polymer fragment through a C—Si covalent bond and their methods or production are provided. The organic polymer backbone can be derived from the anionic polymerization of monomers containing C—C unsaturation. The silicon or tin atom can be further bonded to two alkoxy groups, two hydrocarbon groups or to one alkoxy group and one hydrocarbon group.

A modified conjugated diene-based polymer having high linearity and improved compounding properties is provided. The modified conjugated diene-based polymer includes phosphor, sulfur and chlorine in specific amount ranges, and the degree of branching is controlled, and accordingly, if applied to a rubber composition, tensile strength and viscoelasticity may be excellent, and processability may be markedly improved.