A method for industrial production of a butadiene-isoprene copolymer rubber having a trans-1,4-structure (TBIR) and an apparatus for implementing the method. The production method includes: pumping a predetermined amount of a butadiene and an isoprene into a polymerization reactor, and performing bulk polymerization in the presence of a catalyst to obtain TBIR; performing extrusion, devolatilization, granulation and drying on the produced TBIR, and then packaging the produced TBIR; and separating unreacted monomers by a recovery and separation device followed by separately refining the unreacted monomers, and then returning the unreacted monomers to a batching device or a storage tank. The production apparatus has a recovery and refining unit, a polymerization unit, a post-treatment unit and a utility unit. By the production apparatus and the production method industrial production of TBIR by bulk polymerization is realized.

The present invention discloses a method for preparing high-performance tread rubber through a filler silylation reaction catalyzed in situ by an ionic liquid. The method is as follow: adding a gum rubber, a filler, a silane and an ionic liquid successively into an open mill or an internal mixer for mixing to obtain a rubber compound; high-temperature remilling the rubber compound; adding a vulcanizing package and an anti-aging agent into the remilled rubber compound at room temperature; and vulcanizing the rubber compound to obtain a vulcanized rubber.

The present invention discloses a method for preparing high-performance tread rubber through a filler silylation reaction catalyzed in situ by an ionic liquid. The method is as follow: adding a gum rubber, a filler, a silane and an ionic liquid successively into an open mill or an internal mixer for mixing to obtain a rubber compound; high-temperature remilling the rubber compound; adding a vulcanizing package and an anti-aging agent into the remilled rubber compound at room temperature; and vulcanizing the rubber compound to obtain a vulcanized rubber.

The present invention relates to an integrated process for processing and utilizing every part of the guayule plant (Parthenium argnetatum) which comprises the following steps in sequence: separating the stem and branches from the leaves of said plant with a mechanical treatment; treating the leaves to produce waxes and essential oils, and a fraction containing cellulose, hemicellulose (carbohydrates) and, to a minor extent, salts, organic compounds and lignin; extracting from the stem and branches a liquid phase, so forming a first solid woody residue, indicated with bagasse in the present text; treating said first solid woody residue to prepare sugars, resin, rubber and lignin.

The invention relates to a method for extracting high-quality polyisoprene by grinding plants via rotary shearing using a device comprising at least one rotor and at least one stator, into particles of size smaller than 1 mm, or grinding at a pH higher than 3 and lower than 8. This method is implemented in aqueous phase and allows the preparation of a dispersion of polyisoprene in water having a weight average molecular weight (M.sub.W) higher than 800 000 g/mol. The polyisoprene is extracted from plants and in particular from guayule (Parthenium argentatum). It is a method that is particularly heedful of the environment.

A thermoplastic elastomer composition obtained by dynamically crosslinking an ethylene/-olefin/non-conjugated polymer copolymer (A), a polyolefin resin (B), a softener (C) in an amount of 1 to 200 parts by mass per 100 parts by mass of the total of the copolymer (A) and the resin (B), and a crosslinking agent (D) by the use of a batch mixer under the conditions satisfying the requirements (1) to (4).

A method for manufacturing thermoplastic vulcanizates includes the steps of: subjecting rubber granules, thermoplastic pellets, a filler powder, a cross-linking auxiliary agent powder, a vulcanization accelerator powder, a vulcanizing agent powder, and an auxiliary agent powder to evenly mixing so as to obtain a first mixture; introducing the first mixture into an extruder; introducing, in whole or divided into two portions, a processing oil into the extruder to be evenly mixed with the first mixture so as to obtain a second mixture, the processing oil being present in an amount ranging from 130 parts by weight to 200 parts by weight based on 100 parts by weight of the rubber granules; and subjecting the second mixture to dynamic vulcanization in the extruder so as to obtain the thermoplastic vulcanizates.

A method for manufacturing thermoplastic vulcanizates includes the steps of: subjecting rubber granules, thermoplastic pellets, a filler powder, a cross-linking auxiliary agent powder, a vulcanization accelerator powder, a vulcanizing agent powder, and an auxiliary agent powder to evenly mixing so as to obtain a first mixture; introducing the first mixture into an extruder; introducing, in whole or divided into two portions, a processing oil into the extruder to be evenly mixed with the first mixture so as to obtain a second mixture, the processing oil being present in an amount ranging from 130 parts by weight to 200 parts by weight based on 100 parts by weight of the rubber granules; and subjecting the second mixture to dynamic vulcanization in the extruder so as to obtain the thermoplastic vulcanizates.

Provided herein are methods for the removal of organic solvents from wet bagasse. The use of the methods result in dried bagasse that contains no more than 1 weight percent organic solvents.

Disclosed herein are process for increasing the molecular weight of guayule natural rubber that is solubilized in an organic solvent solution. The processes utilize shear desolventizing to achieve the increase in molecular weight.