221 |
Unsaturated compounds containing silane, electron donor and electron acceptor functionality |
US10302574 |
2002-11-20 |
US06809155B2 |
2004-10-26 |
Osama M. Musa |
This invention relates to curable compounds or resins containing electron donor or acceptor functionality, carbon to carbon unsaturation, and silane functionality, having the structure: in which E is an electron donor or electron acceptor functionality; Q is an oligomeric or polymeric group containing at least one carbon to carbon double bond, A is a hydrocarbyl group; and L is a linking group. |
222 |
Hydroformylation of ethylenically unsaturated polymers in aqueous
dispersion |
US854661 |
1997-05-12 |
US6020441A |
2000-02-01 |
Edgar Zeller; Hartmann F. Leube; Bernhard Schlarb; Heinz-Josef Kneuper; Michael Roper |
Polymers containing ethylenically unsaturated double bonds are hydroformylated by reacting aqueous dispersions of the polymers with hydrogen and carbon monoxide in the presence of suitable hydroformylation catalysts.Also provided are the polymer dispersions obtainable by this process and the hydroformylated polymers themselves. |
223 |
Modification of (CO)polymers with unsaturated peroxyacids |
US144959 |
1993-10-28 |
US5447985A |
1995-09-05 |
Anthony J. DeNicola, Jr.; Caroline C. H. Wei-Berk; Andreas H. Hogt; Jernej Jelenic; John Meijer |
A process for the modification of a (co)polymer selected from C.sub.3 -C.sub.10 .alpha.-olefin polymers, ethylene polymers, diene polymers and copolymers of C.sub.3 -C.sub.10 .alpha.-olefins with ethylene and/or diene, to make the (co)polymer more suitable for reinforcement with polymer reinforcing material is disclosed. In the process, the (co)polymer is contacted with an acid group-containing unsaturated peroxide to modify the (co)polymer. The modification process results in improved properties such as adhesion to PUR lacquer and improved mechanical properties.Also disclosed are a modification process carried out in the presence of an unsaturated coagent as well as the use of acid group-containing unsaturated peroxides for the modification of (co)polymers. Finally, the process may be carried out in a single processing step or in two or more successive processing steps. |
224 |
Method of reclaiming scrap vulcanized rubber using supercritical fluids |
US166356 |
1993-12-14 |
US5418256A |
1995-05-23 |
Jagdish C. Dhawan; Richard C. Legendre |
The invention pertains to a method of treating vulcanized rubber, such as scrap tires, in which the copolymer is treated with an organic solvent under supercritical conditions, such that an organic solution of several by-products is obtained. These can be conventionally fractionated to recover useful organic compounds. |
225 |
Olefin graft copolymers prepared using borane-containing olefin backbone
polymers |
US146861 |
1993-11-03 |
US5401805A |
1995-03-28 |
T. C. Chung; G. J. Jiang; D. Rhubright |
Graft copolymers are disclosed which comprise an olefin borane-containing homopolymer or copolymer backbone polymer having radically polymerized polymeric segments chemically bonded as side chains or as a chain end. A borane-containing diene homopolymer or a copolymer of a diene and/or at least one alpha-olefin having from about 2 to 22 carbon atoms copolymerized with another monomer containing organoborane functional groups can be used as a backbone polymer to prepare the graft copolymers of the present invention. Under oxidation conditions, the borane group becomes the reaction site for the radical polymerization and copolymerization. Radical polymerizable monomers, such as methyl methacrylate, styrene, alpha-methylstyrene, acrylonitrile and the like, can be polymerized to yield high molecular weight graft copolymer. By this synthetic route, high graft efficiency is observed with only a very low concentration of homopolymer being produced. |
226 |
Olefin graft copolymers prepared using borane-containing olefin backbone
polymers |
US863632 |
1992-04-06 |
US5286800A |
1994-02-15 |
T. C. Chung; G. J. Jiang; D. Rhubright |
Polyolefin graft copolymers are disclosed which comprise a polyolefin homopolymer or copolymer backbone polymer having a plurality of free radically polymerized polymeric segments chemically bonded as side chains. It has been found that the use of a borane-containing polyolefin comprising a copolymer of at least one alpha-olefin having from about 2 to 22 carbon atoms copolymerized with another monomer containing organoborane functional groups can be used as a backbone polymer to prepare the graft copolymers of the present invention. Under oxidation conditions, the borane group becomes the reaction site for the free radical polymerization and copolymerization. Numerous free radical polymerizable monomers, such as methyl methacrylate, styrene, alpha-methylstyrene, acrylonitrile and the like, can be polymerized to yield high molecular weight graft copolymers. By this synthetic route, high graft efficiency is observed with only a very low concentration of homopolymer being produced. |
227 |
Preparation of conjugated diene polymers modified with an organo-tin or
germanium halide |
US448332 |
1989-12-11 |
US5064910A |
1991-11-12 |
Iwakazu Hattori; Mitsuhiko Sakakibara; Fumio Tsutsumi; Masao Yoshizawa |
A process for producing a modified conjugated diene polymer which comprises the steps of (I) polymerizing a conjugated diene in an inert organic solvent in the presence of a catalyst comprising (a) a lanthanum series rare earth element compound, (b) an organoaluminum compound represented by the general formula, AlR.sup.1 R.sup.2 R.sup.3 (wherein R.sup.1, R.sup.2 and R.sup.3 which may be same or different, are hydrogen atoms or hydrocarbon groups of 1 to 8 carbon atoms and at least one of R.sup.1, R.sup.2 and R.sup.3 is said hydrocarbon group) and, if necessary, at least one member selected from the group consisting of (c) a Lewis acid and/or (d) a Lewis base, and then (II) modifying the resulting reactive polymer with a modifying compound of the general formula, R.sup.4.sub.n MX.sub.4-n (wherein R.sup.4 is an alkyl group of 1 to 20 carbon atoms or an aryl group, M is a tin atom, X is a halogen atom, and n is an integer of 1 to 3). |
228 |
Cyclic carbonyl containing polymers |
US556243 |
1990-07-23 |
US5057564A |
1991-10-15 |
Stanley J. Brois |
The present invention relates to novel polymers which are adducts of an unsaturated hydrocarbon, wherein the novel polymers are produced by contacting cyclic carbonyl monomers with an unsaturated hydrocarbon to form novel cyclic carbonyl polymers having an Mn of about 500 to about 10.sup.7. |
229 |
Method for preparing polybutadiene endowed with improved processability
characteristics |
US479399 |
1990-02-13 |
US4990573A |
1991-02-05 |
Piero Andreussi; Renzo Bianchi; Mario Bruzzone |
The processability of a polybutadiene with a high content of 1,4-cis-structure is improved by means of the addition of PCl.sub.3 before the polymerization reaction is quenched and when Mooney viscosity of polybutadiene has reached a prefixed value, preferably lower than, or equal to 30; the polymerization of butadiene is carried out in a solution in an aliphatic or cycloaliphatic solvent, in the presence of a catalytic system based on rare earths, preferably a neodymium-based catalytic system. |
230 |
Hydroesterification of polymerized conjugated dienes |
US357451 |
1989-05-26 |
US4981916A |
1991-01-01 |
Carl L. Willis |
Polymerized 1,3-butadiene, including styrenic block copolymers, are functionalized with both carboxylic ester groups and ketone linking groups by reaction with carbon monoxide and an alcohol. Such conjugated diene polymers can be reacted in the presence of a catalyst composition that includes a cobalt compound and an amine ligand. The functionalized 1,3-butadiene polymers may be hydrogenated with a nickel/aluminum catalyst which removes olefinically unsaturated carbon-carbon bonds without substantially hydrogenating the ketone linking groups and carboxylic ester groups. |
231 |
Process for the preparation of functionalized polymers |
US255232 |
1988-10-11 |
US4927892A |
1990-05-22 |
Eit Drent; Antonius A. Broekhuis |
The present invention relates to a process for the preparation of a functionalized polymer comprising reacting a polymer or copolymer of a conjugated diene, at least part of the (co)polymer being formed by 1,2-polymerization, with (a) CO and (b) water and/or an alcohol, in the presence of (i) a Pd compound, (ii) a ligand and (iii) an acid, except hydrohalogenic acids. |
232 |
Modified conjugated diene polymer and process for production thereof |
US90347 |
1987-08-28 |
US4906706A |
1990-03-06 |
Iwakazu Hattori; Mitsuhiko Sakakibara; Fumio Tsutsumi; Masao Yoshizawa |
A process for producing a modified conjugated diene polymer which comprises the steps of (I) polymerizing a conjugated diene in an inert organic solvent in the presence of a catalyst comprising (a) a lanthanum series rare earth element compound, (b) an organoaluminum compound represented by the general formula, Alr.sup.1 R.sup.2 R.sup.3 (wherein R.sup.1, R.sup.2 and R.sup.3 which may be same or different, are hydrogen atoms or hydrocarbon groups of 1 to 8 carbon atoms and at least one of R.sup.1, R.sup.2 and R.sup.3 is said hydrocarbon group) and, if necessary, at least one member selected from the group consisting of (c) a Lewis acid and/or (d) a Lewis base, and then (II) modifying the resulting reactive polymer with a modifying compound selected from the group consisting of the following components (e), (f) and (g): (e) an organometal halide compound represented by the general formula, R.sub.n .sup.4 MX.sub.4-n (wherein R.sup.4 is an alkyl group of 1 to 20 carbon atoms or an aryl group, M is a tin or germanium atom, X is a halogen atom, and n is an integer of 1 to 3), (f) a heterocumulene compound or a three-membered heterocyclic compound having, in the molecule, a bond represented by the general formula, ##STR1## (wherein X.sup.1 is a carbon, nitrogen, oxygen or sulfur atom, Y is a carbon or sulfur atom, Z is a nitrogen, oxygen or sulfur atom, and X.sup.2 is a nitrogen, oxygen or sulfur atom), and (g) a halogen compound having, in the molecule, a bond represented by the general formula, ##STR2## (wherein Y.sup.1 is a nitrogen or oxygen atom and X is a halogen atom). Said modified conjugated diene polymer has excellent characteristics in wear resistance, heat generation, mechanical properties, etc. |
233 |
Method for modifying rubbers |
US843616 |
1986-03-25 |
US4677153A |
1987-06-30 |
Shizuo Kitahara; Yoshitsugu Hirokawa; Toshihiro Fujii |
A method for modifying a rubber having unsaturated bonds, characterized by reacting said rubber with (a) an organic compound (I) having a group represented by the formula --CH.dbd.N-- and (b) an organic acid halide (II) having a group represented by the formula --COX (X is a halogen atom), in the place of a Lewis acid. |
234 |
Composition of modified chlorinated resins |
US474959 |
1983-03-14 |
US4608415A |
1986-08-26 |
Jun Nakajima; Shiceki Morinaga |
A coating material containing a modified chlorinated resin which produces by the modifying step chlorinated resins containing less than 50% chlorine by weight with the medium of the resin modified by fatty acids so that it is adapted to be used as a coating material, printing ink, adhesive, and the like, especially suitable for polyolefin plastics and said coating material enabling manufacture of an excellent coating for weather resistance, adhesion, stability and in other coating performances. |
235 |
Method of treating diene rubber and improved rubber compositions |
US502875 |
1983-06-09 |
US4513110A |
1985-04-23 |
Charles P. Rader |
Treatment of diene rubber with a diketo compound, in which the keto groups are part of a six-carbon hydrocarbon ring containing carbon-to-carbon unsaturation, or a tautomer of the compound, is performed at temperatures above 130.degree. C. Rubber compositions treated in this manner exhibit increased green strength, decreased plasticity, and, when vulcanized, decreased hysteresis. |
236 |
Anionic polymerization of cis- and trans-1,3-pentadiene from a mixture
of saturated and unsaturated hydrocarbons |
US517171 |
1983-07-25 |
US4486614A |
1984-12-04 |
Felipe A. Donate; John W. Bozzelli; Kent S. Dennis |
1,3-pentadiene is polymerized from a mixture of saturated and unsaturated hydrocarbon compounds, the compounds having primarily 5 carbon atoms per molecule, with an anionic polymerization initiator. The mixture of saturated and unsaturated hydrocarbon compounds is contacted, in an inert atmosphere, with an anionic polymerization initiator to form a reaction mixture. The anionic polymerization initiator is present in an amount sufficient to inactivate polymerization-terminating compounds present in the mixture and to initiate polymerization of 1,3-pentadiene from the mixture. The reaction mixture is heated with stirring to a temperature sufficient to inactivate the polymerization terminating compounds. After inactivation of the polymerization terminating compounds, the reaction mixture is then heated with stirring to a temperature sufficient to initiate polymerization of 1,3-pentadiene from the reaction mixture. Polymer recovery and subsequent functionalization, if any, follow thereafter. |
237 |
Process for modifying rubbers employing a compound containing a carboxyl
and an aldehyde group |
US467765 |
1983-02-18 |
US4412041A |
1983-10-25 |
Shizuo Kitahara; Yoshitsugu Hirokawa; Haruki Kawada; Toshihiro Fujii; Nagatoshi Sugi; Hiroaki Hasegawa; Akira Yoshioka |
A process for modifying a rubber, which comprises reacting a rubber having an unsaturated carbon linkage with an organic compound having a carboxyl group and an aldehyde group in the presence of an acid catalyst. |
238 |
Modified rubber composition employing a compound containing a carboxyl
and an aldehyde group |
US467764 |
1983-02-18 |
US4412031A |
1983-10-25 |
Shizuo Kitahara; Yoshitsugu Hirokawa; Haruki Kawada; Toshihiro Fujii; Nagatoshi Sugi; Hiroaki Hasegawa; Akira Yoshioka |
A modified rubber composition comprising a blend of (a) a modified rubber obtained by reaction a rubber having an unsaturated carbon linkage with an organic compound having a carboxyl group and an aldehyde group in the presence of an acid catalyst, and (b) carbon black. |
239 |
Process for preparing oxidatively-stable polymers |
US111840 |
1980-01-14 |
US4354007A |
1982-10-12 |
Gerald Scott |
Polymers are rendered more oxidatively stable by reaction with an antioxidant or stabilizer, generally a vinyl-group- or thiol group-containing antioxidant, in the presence of a free radical which may be produced by a redox system or ultra-violet light. The resulting polymers can be used as such or can be used as additives in other polymers to stabilize the latter. |
240 |
Conjugated diene butyl elastomer copolymer |
US076471 |
1979-09-17 |
US4288575A |
1981-09-08 |
Irwin J. Gardner |
A heterogeneous catalytic process for dehydrohalogenating allylically halogenated olefinic hydrocarbon polymers to produce conjugated diene unsaturated polymeric products is disclosed comprising employing certain metal containing catalyst compositions, especially activated alumina supported copper containing catalysts. The process is especially suitable for the preparation of conjugated diene butyl elastomers from halogenated butyl rubber and produces products having relatively high reactivity levels in terms of active diene content. |