141 |
Process for peptizing polychloroprene latex |
US35941164 |
1964-04-13 |
US3362925A |
1968-01-09 |
ALDWYN JENKINS PHILIP; ARCHIBALD SPARKS ANTHONY; CHARLES MOORE ROBERT |
|
142 |
Process for peptising sulphur modified chloroprene latex |
US37266364 |
1964-06-04 |
US3320201A |
1967-05-16 |
ARCHIBALD SPARKS ANTHONY; EPSON DOWNS; CHARLES MOORE ROBERT |
|
143 |
Production of hydroxy functional polymers |
US21978162 |
1962-08-27 |
US3312744A |
1967-04-04 |
FARR JR JAMES A; STEPHENS WILLIAM D |
|
144 |
Process for controlling the peptisation of sulphur modified polychloroprene latex |
US37207764 |
1964-06-02 |
US3308085A |
1967-03-07 |
ARCHIBALD SPARKS ANTHONY; CHARLES MOORE ROBERT |
|
145 |
Rubbery polybutadiene peptized with c6-c10 monocarboxylic acids |
US49226065 |
1965-10-01 |
US3297607A |
1967-01-10 |
BEHRENS RUDOLF A |
|
146 |
Process for the manufacture of rubber degradation products |
US13303661 |
1961-08-22 |
US3221000A |
1965-11-30 |
HANNS DETTENTHALER; GERHARD JUNG |
|
147 |
Process of plasticizing polychloroprene employing alkali sulfite |
US2000560 |
1960-04-05 |
US3105055A |
1963-09-24 |
ELMER AHO CHARLES |
|
148 |
Plasticizing rubber with a metal salt of an acylated aminothiophenol |
US38777653 |
1953-10-22 |
US2787605A |
1957-04-02 |
HOOK EDWIN O; DAVIS ARNOLD R |
|
149 |
Vulcanizable polymerization product and a process of producing same |
US32763640 |
1940-04-03 |
US2327975A |
1943-08-24 |
EWALD ZAUCKER |
|
150 |
Method of treating rubber |
US71930134 |
1934-04-06 |
US2095673A |
1937-10-12 |
MINOR HENRY R |
|
151 |
Process of producing protective coatings on metal surfaces |
US59077332 |
1932-02-03 |
US1991300A |
1935-02-12 |
GUSTAV TICHY; HEINRICH KLAS |
|
152 |
METATHESIS OF NITRILE RUBBERS IN THE PRESENCE OF TRANSITION METAL COMPLEX CATALYSTS |
PCT/EP2012074495 |
2012-12-05 |
WO2013098052A3 |
2013-08-22 |
ONG CHRISTOPHER |
The present invention relates to a process for the preparation of optionally hydrogenated nitrile rubber with reduced molecular weights by subjecting an optionally hydrogenated nitrile rubber to a metathesis reaction in the presence of a transition metal catalyst complex in a specific reaction mixture. |
153 |
PRODUCTION OF TELECHELIC COMPOUNDS BY METATHESIS DEPOLYMERIZATION |
PCT/US2007018625 |
2007-08-23 |
WO2008027269A3 |
2008-04-24 |
ARRIOLA DANIEL J; BRIGGS JOHN R; TIMMERS FRANCIS J; WAGNER NICOLE L; WENZEL TIMOTHY T |
Telechelic unsaturated polymers suitable for conversion to functionalized derivatives such as polyols are prepared by metathesis of an unsaturated copolymer formed by addition polymerization of ethylene, a diene or alkyne and, optionally, one or more C3.20 a-olefins. |
154 |
PROCESS FOR DESOLVENTIZING LOW MOLECULAR WEIGHT DIENE POLYMERS |
PCT/US0117964 |
2001-06-04 |
WO0196425A3 |
2002-03-21 |
LYNCH THOMAS |
A butadiene-type polymer suitable for use as a processing aid in a rubber composition is formed by polymerizing butadiene or other conjugated diene monomers in a solvent, such as hexane, to form a polymer of relatively low molecular weight. The polymer is coupled to increase its molecular weight to a level at which conventional desolventizing processes may be used to remove the solvent from the mix. After desolventizing, the polymer is decoupled, by heating, to return the polymer to its original molecular weight. |
155 |
GRAFTING FUNCTIONAL SPECIES TO RUBBER |
PCT/US2013075624 |
2013-12-17 |
WO2014099888A1 |
2014-06-26 |
BOHN CLAYTON C JR |
A method for producing a functionalized rubber that includes adding a diene rubber selected from natural rubber, a synthetic polyisoprene rubber or combinations thereof and an organic peroxide to a mixer, the organic peroxide may be represented by the formula R1-O-O-R2, wherein R1 is selected from hydrogen or an organic moiety of between 4 and 15 carbon atoms and R2 comprises a functional moiety. The mix composition may be mixed until the mix composition reaches a target temperature of between 120 °C and 190 °C and decomposing the organic peroxide to provide a decomposition product comprising the functional moiety and reacting at least a portion of the decomposition product with at least a portion of the diene rubber to produce the functionalized rubber. |
156 |
METHOD FOR THE ETHENOLYSIS OF POLYTERPENES AND DECOMPOSITION PRODUCTS OBTAINABLE THEREFROM |
PCT/EP2011073493 |
2011-12-20 |
WO2012085013A9 |
2012-09-27 |
PLENIO HERBERT; WOLF STEFANIE |
The invention relates to a method for the ethenolysis of acyclic polyterpenes which comprise trisubstituted double bonds. The polyterpene is reacted with a catalyst complex [(NHC)(NHCewg)MeX2(CHPh)] and [(NHC)(NHCeWg)MeX2(3-phenylindenylid-1-ene)] in the presence of ethene. NHC and NHCewg are N-heterocyclic carbene ligands, where NHC is at least as rich in electrons as NHCewg, Me is Ru, Os or W, and X is selected from F, Cl, Br, I, CN, SCN, OCN, and NCO. The polyterpene is particularly advantageously selected from natural rubber, liquid natural rubber and squalene, or from vulcanized rubber, selected from used tires, used tire granules and powdered rubber. The invention provides, for the first time, decomposition products of the polyterpenes natural rubber, liquid natural rubber, squalene and vulcanized rubber, which can be produced with the aid of the method according to the invention. |
157 |
METHOD AND CHEMICAL COMPOSITION FOR RECLAIMING OF CURED ELASTOMER MATERIALS |
PCT/IL2009000808 |
2009-08-17 |
WO2010020987A4 |
2010-06-24 |
BEIRAKH LEV |
A method of reclaiming of a cured elastomer material, comprising mixing the cured elastomer in form of crumb or chips with a devulcanization-aiding chemical composition, applying a shear- stress deformation to the mixture; the devulcanization-aiding chemical composition comprises following ingredients: first agent promoting scission of sulfide bonds of free radicals formed under said shear-stress deformation, which is selected from the following classes: of amines and sulfides and their derivatives; second agent providing the pre-set acidity in the course of the process and thus inhibiting recombination of sulfide bonds, which is selected from the following classes: organic acids and their anhydrides; third agent contributing to fast stabilization of the free radicals, which is selected from the class of oxidants fourth agent promoting redox reaction, which is selected from salts of metals with variable valence; and fifth agent prevention agglomeration of said elastomer material after applying the shear-stress deformation and reduction of friction, which is selected from the class of polar sorbents or fine bio-pigments. |
158 |
Functionalized nitrile rubbers and the production thereof |
US13982520 |
2012-01-25 |
US10011664B2 |
2018-07-03 |
Werner Obrecht; Julia Maria Jeschko; Oskar Nuyken; Martin Schneider |
Provided are new functionalized nitrile rubbers, which may optionally also be in partially or wholly hydrogenated form, and also a process for preparing them by metathesis of nitrile rubbers in the presence of a metathesis catalyst and at least one functionalized allyl compound. The new functionalized nitrile rubbers are suitable for producing vulcanizable mixtures and allow the production of vulcanizates having very stable networks. Also made possible, in particular, is the synthesis of block copolymers. |
159 |
Method for producing devulcanized rubber and an apparatus therefor |
US15271673 |
2016-09-21 |
US10005892B2 |
2018-06-26 |
Gopinath B. Sekhar |
A method for producing devulcanized rubber and an apparatus (100) therefor. The method for producing devulcanized rubber comprises the steps of (1) providing vulcanized rubber particles with a pre-determined particle size and (2) devulcanizing the vulcanized rubber particles. The vulcanized rubber particles are devulcanized mechanically by impact forces and devulcanized chemically by a chemical composition. The impact forces break sulphur-sulphur and sulphur-carbon bonds of the vulcanized rubber particles causing surfaces of the rubber to become receptive in reacting with the chemical composition and the chemical composition renders the sulphur passive to prevent reattachment of the bonds, of which the chemical composition comprises at least one accelerator, at least one inorganic activator and at least one organic activator. |
160 |
FUNCTIONALISED NITRILE RUBBERS AND THE PRODUCTION THEREOF |
US13982520 |
2012-01-25 |
US20170190806A1 |
2017-07-06 |
Werner Obrecht; Julia Maria Jeschko; Oskar Nuyken; Martin Schneider |
Provided are new functionalized nitrile rubbers, which may optionally also be in partially or wholly hydrogenated form, and also a process for preparing them by metathesis of nitrile rubbers in the presence of a metathesis catalyst and at least one functionalized allyl compound. The new functionalized nitrile rubbers are suitable for producing vulcanizable mixtures and allow the production of vulcanizates having very stable networks. Also made possible, in particular, is the synthesis of block copolymers. |