41 |
METHOD FOR INHIBITING POPCORN POLYMER FORMATION BY HEAT |
EP92905620.8 |
1992-01-24 |
EP0569508B1 |
1998-06-17 |
SUN, Hsiang-ning; INGRAM, Cynthia, Childre; MCMANUS, John, Joseph, Jr. |
Inhition of popcorn polymer growth by treatment with heat. Heat can be applied to extant popcorn polymer, particularly in the absence of organic material from which the popcorn polymer is formed. A chemical inhibitor of popcorn polymerization can be used in conjunction with the heat treatment. |
42 |
METHOD FOR INHIBITING POPCORN POLYMER FORMATION BY HEAT |
EP92905620.0 |
1992-01-24 |
EP0569508A1 |
1993-11-18 |
SUN, Hsiang-ning; INGRAM, Cynthia, Childre; MCMANUS, John, Joseph, Jr. |
Inhibition de la croissance du polymère type popcorn par traitement thermique. On peut appliquer de la chaleur au polymère type popcorn, notamment en l'absence de matières organiques dont est formé le polymère type popcorn. On peut utiliser un inhibiteur chimique de polymèrisation type popcorn en association avec le traitement thermique. |
43 |
RUBBER COMPOSITION FOR TIRES, METHOD FOR PREPARING RUBBER COMPOSITION FOR TIRES, AND TIRE |
US15950808 |
2018-04-11 |
US20180305469A1 |
2018-10-25 |
Norihiro MATSUMOTO |
Provided are a rubber composition for tires having low tan δ at approximately 60° C. and excellent breaking energy at approximately 25° C.; a method for preparing the rubber composition for tires; and a tire thereof. The present invention relates to a rubber composition for tires which contains a rubber component including an isoprene-based rubber, and which has a correlation length Ξb of 50 nm or less as determined by fitting the following Equations 1 to 6 to a scattering intensity curve I(q) obtained by X-ray scattering analysis or neutron scattering analysis: I ( q ) = A 1 + q 2 ξ 2 + B ( 1 + q 2 Ξ b 2 ) 2 + C ( 1 + q 2 Ξ c 2 ) 2 ( Equation 1 ) ξ < Ξ b < Ξ c ( Equation 2 ) A = 8 π N a σ 2 ξ 3 ( Equation 3 ) B = 4 π N b σ 2 Ξ b 2 ( Equation 4 ) C = 4 π N c σ 2 Ξ c 2 ( Equation 5 ) q = 4 π sin θ 2 λ ( Equation 6 ) A, B, C, ξ, Ξb, Ξc: fitting parameter q: scattering vector Na: number per unit volume (number/cm3) of scatterers having a correlation length ξ Nb: number per unit volume (number/cm3) of scatterers having a correlation length Ξb Nc: number per unit volume (number/cm3) of scatterers having a correlation length Ξc σ: electron density difference (electron·(cm−3)) between scatterers and the surrounding matrix or scattering length density difference (cm−2) between scatterers and the surrounding solvent θ: scattering angle λ: wavelength of X rays or neutrons. |
44 |
POLYISOPRENE PRODUCTION METHOD |
US15895341 |
2016-06-22 |
US20180223004A1 |
2018-08-09 |
Isao YUKI; Nobuaki SUZUKI; Shinya TAKENO; Yoshihisa NAKAZAWA; Takeshi BAMBA |
The present invention provides a method for producing polyisoprene including the steps of: (A) combining a plant tissue containing polyisoprene with an organic solvent at a temperature of 60 to 80° C. to prepare a polyisoprene solution; and (B) lowering the temperature of the polyisoprene solution to 0 to 30° C. to deposite the polyisoprene in the polyisoprene solution, wherein the organic solvent is ethylene glycol dimethyl ether. |
45 |
METHOD FOR INDUSTRIAL PRODUCTION OF TRANS-BUTADIENE-ISOPRENE COPOLYMER RUBBER AND APPARATUS THEREFOR |
US15743781 |
2016-11-15 |
US20180201714A1 |
2018-07-19 |
Aihua HE; Yunsheng MA; Huafeng SHAO; Gang YAO; Chenguang LIU; Bo LUAN; Riguo WANG |
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. |
46 |
EXTRACTION OF POLYISOPRENE WITH HIGH MOLAR MASS |
US15566142 |
2016-04-14 |
US20180086854A1 |
2018-03-29 |
Ali AMOR; Serge PALU; Daniel Auguste, Marie, Paul PIOCH; Michel DORGET |
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 (MW) 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. |
47 |
Method of purifying polyolefin |
US15038099 |
2014-10-23 |
US09790292B2 |
2017-10-17 |
Sinyoung Kim; Seong Soo Lim; Suran Lee; Jaeho Kim; Sang Hong Shin |
Provided is a method of purifying polyolefin, the method including the step of contacting linear low-density polyethylene synthesized by a gas phase polymerization reaction with a purge gas containing an ethylene gas and an inert gas in a purge bin. According to this purification method, residual alkene monomers with high carbon numbers may be removed in a simpler and more efficient manner. |
48 |
Systems And Methods For The Management Of Waste Associated With Processing Guayule Shrubs To Extract Rubber |
US14409117 |
2013-06-18 |
US20150190848A1 |
2015-07-09 |
Yingyi Huang; Hiroshi Mouri; Robert W. Handlos; Jenny L. Sheaffer |
Systems and methods for managing the waste associated with the extraction of rubber from guayule shrubs are provided. Also provided is a portable local sub-station for reducing the transportation costs associated with the processing of guayule shrubs for the extraction of rubber. Use of the disclosed systems, methods and/or local sub-station can reduce transportation costs, reduce processing costs and reduce the downstream processing complexity associated with the extraction of rubber from guayule shrubs. |
49 |
Methods For Desolventization Of Bagasse |
US14409132 |
2013-06-18 |
US20150184933A1 |
2015-07-02 |
Yingyi Huang; Mark W. Smale; William M. Cole |
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. |
50 |
Automatic and continuous rubber extracting device for extracting rubber from a rubber-bearing plant material |
US12957171 |
2010-11-30 |
US08573523B2 |
2013-11-05 |
Anvar Buranov |
An automatic and continuous rubber extracting device comprises a first grinding stone having a central opening and second grinding stone rotatable mounted against the first grinding stone. The first grinding stone is a top stone and the second grinding stone is a bottom stone. A cone is disposed within the central opening of the first grinding stone. A motor apparatus is provided for rotating the bottom stone and the cone. A screw feed is in communication with the central opening of the first grinding stone. Plant material from the screw feed is fed along the cone and between the first grinding stone and second grinding stone. The cone may be provided with grooves and recesses along an lateral surface thereof. |
51 |
Dehydrogenation and polymerization process |
US11811084 |
2007-06-08 |
US20080306320A1 |
2008-12-11 |
James T. Merrill |
Process for the production of an isoprene containing rubber compound by dehydrogenation of an isoamylene containing feedstock supplied to a dehydrogenation reactor containing a particulate dehydrogenation catalyst comprising iron and potassium and having a pore diameter of at least 500 nanometers. The dehydrogenation reactor is operated at a temperature of at least 570° C. to dehydrogenate the isoamylene to produce isoprene. The product containing isoprene and unreacted isoamylene is recovered from the dehydrogenation reactor. Isoprene is polymerized to produce an isoprene containing rubber product. An unreacted feed component containing isoamylene is separated from the rubber product and recycled to the dehydrogenation reactor. |
52 |
Processing of guayule material by volatilizing and heating steps |
US355080 |
1982-03-05 |
US4376853A |
1983-03-15 |
Richard Gutierrez; Edward L. Kay |
This invention relates to methods of processing guayule plant material. More particularly, it relates to processing methods, including volatilization and heating steps, by which resinous material, extracts and resins from guayule plants are converted and recovered. |
53 |
Method for separating nickel contaminant from hydrogenated conjugated diene polymers |
US3780137D |
1971-08-30 |
US3780137A |
1973-12-18 |
HASSELL H |
A METHOD IS PROVIDED FOR REMOVING NICKEL CONTAMINATION FROM ORGANIC POLYMERS BY CONTACTING THEM WITH GASEOUS CARBON MONOXIDE AT TEMPERATURES FROM ABOUT -20* TO +200*C. TO FORM NICKEL CARBONYL, THEN VOLATILIZING THE NICKEL CARBONYL FROM THE POLYMER. OPTIONALLY, HYDROGEN SULFIDE MAY ALSO BE PRESENT IN THE CARBON MONOXIDE TO PROMOTE CARBONYLIZATION OF NICKEL COMPOUNDS.
|
54 |
Reclaiming of polymer from clay used in quenching polymerization catalyst |
US84063459 |
1959-09-17 |
US3050569A |
1962-08-21 |
LEVERNE CULL NEVILLE; MEREDITH LAMBERT MERLAN; CARR JR JAMES WOODFORD; BERKELEY JR PETER JOSEPH |
|
55 |
Recovering rubber from guayuleshrub |
US64135646 |
1946-01-15 |
US2434412A |
1948-01-13 |
JONES EDWIN P |
|
56 |
Crude rubber and process of producing the same |
US71257824 |
1924-05-12 |
US1550319A |
1925-08-18 |
RUSSELL HOPKINSON |
|
57 |
Methods for the desolventization of bagasse |
US15424224 |
2017-02-03 |
US10132563B2 |
2018-11-20 |
Yingyi Huang; Mark W. Smale; William M. Cole |
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. |
58 |
Modified natural rubber, process for producing same, rubber composition for tire, and pneumatic tire |
US14437758 |
2013-12-02 |
US10131763B2 |
2018-11-20 |
Toshiaki Sakaki; Hirotoshi Otsuki; Yuka Yokoyama; Tatsuya Miyazaki; Ryo Mashita |
The present invention provides a modified natural rubber having a good balance of improved fuel economy, heat-aging resistance, processability, and breaking resistance, and a method for producing such a rubber. The present invention also provides a tire rubber composition and a pneumatic tire which are prepared using the modified natural rubber. The present invention relates to a highly purified, modified natural rubber whose pH is adjusted to 2 to 7. |
59 |
RUBBER EXTRACTION METHOD |
US15773024 |
2016-11-03 |
US20180319904A1 |
2018-11-08 |
Peter Johannes VAN DIJK; Rolf André MANK |
The present invention relates to a method for obtaining rubber from rubber-containing plant material, the method comprising the steps of subjecting a composition comprising rubber-containing plant material and a fermentation culture to conditions allowing anaerobic fermentation, wherein the composition preferably has a water content of less than 95 wt. %. The fermentation preferably does not involve movement of the rubber-containing plant material (or parts thereof), and preferably the fermentation is performed in the absence of oxygen ventilation. Additionally, it is preferred that the fermentation culture is cycled through the composition by percolation. A further step of the method involves obtaining the rubber from the composition. |
60 |
INTEGRATED PROCESS FOR PROCESSING AND UTILISING THE GUAYULE PLANT |
US15515299 |
2015-10-21 |
US20170218094A1 |
2017-08-03 |
Ezio BATTISTEL; Stefano RAMELLO; Cecilia QUERCI |
The present invention relates to an integrated process for processing and utilising every part of the guayule plant (Parthenium argentatum) which comprises the following steps in sequence: separating the stem and branches (3) from the leaves (2) of said plant with a mechanical treatment (1); treating the leaves (100) to produce waxes and essential oils (102), and a fraction (101) containing cellulose, hemicellulose (carbohydrates) and, to a minor extent, salts, organic compounds and lignin; extracting (200) from the stem and branches a liquid phase (4), so forming a first solid woody residue (5), indicated with bagasse in the present text; treating said first solid woody residue (5) to prepare sugars, resin, rubber and lignin. |