Interpolymer From At Least Three Ethylenically Unsaturated Monoolefinic Hydrocarbon Monomers Patents (Class 526/916)
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Patent number: 5674613Abstract: Elastomeric polymers including ethylene, alpha-olefin and vinyl norbornene are shown to have improved extrusion characteristics, improved electrical properties, improved cure characteristics compared to ethylene, alpha-olefin, non-conjugated diene elastomeric polymers containing non-conjugated dienes other than vinyl norbornene. The elastomeric polymers containing vinyl norbornene generally have a branching index below 0.5.Type: GrantFiled: June 14, 1995Date of Patent: October 7, 1997Assignee: Exxon Chemical Patents Inc.Inventors: Narayanaswami Raja Dharmarajan, Periagaram S. Ravishankar
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Patent number: 5622765Abstract: Saxony carpet containing a pile yarn comprising propylene polymer yarn of increased resiliency and shrinkage, compared to crystalline propylene homopolymer yarn, having a continuous strand of multiple monofilament fibers, said fibers consisting essentially of certain propylene polymer blends and materials.Type: GrantFiled: September 21, 1995Date of Patent: April 22, 1997Assignee: Montell North America Inc.Inventors: Luciano Clementini, Adam F. Galambos, Giuseppe Lesca, Kumar Ogale, Leonardo Spagnoli, Michael E. Starsinic
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Patent number: 5618895Abstract: Copolymers of propylene with other 1-alkenes, obtainable by gas-phase polymerization of a mixture of propylene and another 1-alkene in the absence of a liquid reaction medium under a pressure of from 15 to 30 bar, at from 60.degree. to 90.degree. C. and with an average holdup time of the polymer of from 1 to 5 hours, with the aid of a Ziegler-Natta catalyst system which, besides a titanium-containing solid component, contains an aluminum component and an electron donor, with the temperature being chosen so that, under the preset pressure, no condensation of the monomer mixture takes place in the gas space and, moreover, the ratio of the partial pressures of propylene and the other 1-alkene is adjusted to from 5:1 to 100:1, are particularly suitable for producing sheets and shaped articles.Type: GrantFiled: September 16, 1993Date of Patent: April 8, 1997Assignee: BASF AktiengesellschaftInventors: Juergen Kerth, Peter Koelle, Ralf Zolk, Harald Schwager
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Patent number: 5587229Abstract: Fabric prepared from a propylene polymer yarn of increased resiliency and shrinkage, compared to crystalline propylene homopolymer yarn, comprising a strand of multiple monofilament fibers, the fibers consisting essentially of certain propylene polymer blends and materials.Type: GrantFiled: September 21, 1995Date of Patent: December 24, 1996Assignee: Montell North America Inc.Inventors: Luciano Clementini, Adam F. Galambos, Giuseppe Lesca, Kumar Ogale, Leonardo Spagnoli, Michael E. Starsinic
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Patent number: 5571883Abstract: Motor vehicle vibration damping parts based on an ethylene, alpha-olefin, vinyl norbornene elastomeric polymer are manufactured with more efficiency due to vibration damping part compounds having lower viscosity, easier processing than ethylene, alpha-olefins, diene monomer compounds, where the diene monomer is other than vinyl norbornene. Additionally, the engine mounts or other vibration damping parts based on the ethylene, alpha-olefin, vinyl norbornene elastomeric polymer have better heat aging characteristics than natural rubber, when temperature of service exceed 120.degree. C., maintain more constant dynamic characteristics of the mount when running at elevated temperature like 120.degree. C.Type: GrantFiled: June 14, 1995Date of Patent: November 5, 1996Assignee: Exxon Chemical Patents Inc.Inventors: Eric P. Jourdain, Periagaram S. Ravishankar
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Patent number: 5486419Abstract: Disclosed is a polyolefin yarn capable of increased resiliency and shrinkage comprising continuous strands of multiple monofilament fibers or staple fibers of propylene polymer material, optionally blended with polypropylene homopolymer, said propylene polymer material selected from the group consisting of terpolymers of propylene with ethylene and C.sub.4 -C.sub.8 alpha-olefin; compositions of copolymers of propylene with C.sub.4 -C.sub.8 alpha-olefin together with copolymers of propylene and ethylene or terpolymers of propylene-ethylene-C.sub.4 -C.sub.8 alpha-olefin; compositions of terpolymers of propylene, ethylene and C.sub.4 -C.sub.8 alpha-olefin in combination with copolymers of propylene and C.sub.4 -C.sub.8 alpha-olefin and copolymers of ethylene and C.sub.4 -C.sub.8 alpha-olefin; random crystalline propylene copolymers with ethylene or a C.sub.4 -C.sub.8 alpha-olefin; and a heterophasic polyolefin composition; and fabric, especially pile fabric, such as carpeting, produced therefrom.Type: GrantFiled: January 10, 1995Date of Patent: January 23, 1996Assignee: Montell North America Inc.Inventors: Luciano Clementini, Adam F. Galambos, Giuseppe Lesca, Leonardo Spagnoli, Michael E. Starsinic, Kumar Ogale
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Patent number: 5484610Abstract: Terpolymers which are sensitive to pH and temperature are useful carriers for conducting bioactive agents through the gastric juices of the stomach in protected form. Such terpolymers swell at the higher physiologic pH of the intestinal tract causing release of the bioactive agents into the intestine. The terpolymers are linear and are made up of 35 to 99 wt % of a temperature sensitive component, which imparts to the terpolymer LCST (lower critical solution temperature) properties below body temperatures, 1 to 30 wt % of a pH sensitive component having a pK.sub.a in the range of from 2 to 8 which functions through ionization or deionization of carboxylic acid groups to prevent the bioactive agent from being lost at low pH but allows bioactive agent release at physiological pH of about 7.4 and a hydrophobic component which stabilizes the LCST below body temperatures and compensates for bioactive agent effects on the terpolymers.Type: GrantFiled: January 2, 1991Date of Patent: January 16, 1996Assignee: MacroMed, Inc.Inventor: You H. Bae
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Patent number: 5438110Abstract: An olefin polymerization catalyst formed from (A) a solid titanium catalyst component containing magnesium, titanium and halogen as essential ingredients, (B) an organoaluminum compound, and (C) an organosilicon compound containing a cyclopentyl group, a cyclopentenyl group, a cyclopentadienyl group or a derivative derived from any of these groups.A polymerization process which comprises polymerizing or copolymerizing olefins in the presence of the olefin polymerization catalyst to form a homopolyolefin having high stereoregularity or a copolyolefin having a narrow composition distribution.Type: GrantFiled: October 24, 1994Date of Patent: August 1, 1995Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Naoshi Ishimaru, Mamoru Kioka, Akinori Toyota
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Patent number: 5336746Abstract: A random copolymer of propylene with from 1 to 10 mol % of a C.sub.4 to C.sub.20 .alpha.-olefin and an intrinsic viscosity of 0.5 to 6 dl/g is also characterized by a melting point (Tm) measured by a differential scanning calorimeter falling within the range of 90<Tm<155-3.5(100-P) (wherein P is the propylene content (mol %) present in the copolymer), a molecular weight distribution (Mw/Mn) of less than 3.5, and a boiling trichloroethylene-insoluble content of less than 5% by weight. Terpolymers of propylene-ethylene-C.sub.4 -C.sub.20 .alpha.-olefin wherein Tm falls within the range of 70<Tm<155 -5.5(100-P) are also described. The propylene random copolymer is prepared by polymerizing propylene, .alpha.-olefin, and optionally, ethylene in the presence of a catalyst system which includes an hafnium compound having a multidentate ligand and two or more cycloalkadienyl groups linked together via an alkylene linkage, and an organoaluminum oxy-compound.Type: GrantFiled: June 22, 1992Date of Patent: August 9, 1994Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Toshiyuki Tsutsui, Akinori Toyota
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Patent number: 5298577Abstract: A solution polymerisation process carried out continuously in a cascade produces high molecular weight gel-free ethylene terpolymers having on the one hand high resistance to fuels, oils and organic solvents and on the other hand high flexibility even at low temperatures when narrow ranges are adhered to in respect of solvent content, pressure, temperature control and degree of conversion.Type: GrantFiled: December 12, 1989Date of Patent: March 29, 1994Assignee: Bayer AGInventors: Wolfgang Baade, Werner Obrecht, Christian Ohm, Rudolf Casper, Kurt P. Neurer, Gerd Sylvester
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Patent number: 4857611Abstract: The present invention relates to a gas fluidized bed process for the production of copolymers having a density between 0.900 and 0.935, which process comprises copolymerization of (a) ethylene, (b) propylene and/or 1-butene, and (c) alpha-olefins comprising from 5 to 8 carbon atoms in the gaseous state, in admixture with an inert gas and optionally with hydrogen, in the presence of a catalytic system comprising a cocatalyst consisting of at least 1 organo-metallic compound of a metal of groups II and III of the Periodic Table of Elements and a special solid catalyst.Type: GrantFiled: June 8, 1988Date of Patent: August 15, 1989Assignee: BP Chemicals LimitedInventors: Daniel C. Durand, Frederic R. Morterol
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Patent number: 4826939Abstract: Disclosed are highly amorphous olefin terpolymers from propylene, 1-hexene, and ethylene in which the ethylene units are incorporated in the polymer chain in a highly random manner, and a process for producing such terpolymers.Type: GrantFiled: August 31, 1987Date of Patent: May 2, 1989Assignee: Eastman Kodak CompanyInventor: Richard K. Stuart, Jr.
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Patent number: 4824921Abstract: Resins having an improved combination of softening point and tackifying properties together with good color and heat stability are obtained by Freidel-Crafts copolymerization of 4 to 80 wt. % of a C.sub.5 /C.sub.6 unsaturated feed; 5 to 55 wt. % of a terpene and 3 to 55 wt. % of an unsaturated aromatic compound.Type: GrantFiled: January 7, 1987Date of Patent: April 25, 1989Assignee: Exxon Research & Engineering CompanyInventor: Quoc Luvinh
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Patent number: 4761462Abstract: A packaging transparent propylene copolymer film stretched in at least one direction, which consists of a copolymer of propylene and an .alpha.-olefin having 4 or more carbon atoms or a copolymer of propylene, an .alpha.-olefin having 4 or more carbon atoms and ethylene. The copolymer satisfies the following conditions;(1) the content of the .alpha.-olefin having 4 or more carbon atoms in the copolymer is 8-25 mole %,(2) the content of ethylene in the copolymer is 5 mole % or less,(3) the content of a cold xylene-soluble portion in the copolymer is 15-50% by weight, and(4) the flexural modulus of the copolymer is 2,500-7,000 kg/cm.sup.2.Type: GrantFiled: December 30, 1985Date of Patent: August 2, 1988Assignee: Sumitomo Chemical Company, LimitedInventors: Shuji Kitamura, Kiyohiko Nakae, Tadatoshi Ogawa, Teruaki Yoshida, Hajime Sadatoshi
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Patent number: 4748224Abstract: Highly oxygen permeable hard and semi-hard contact lenses are made from the copolymer of ethylenically unsaturated siloxane ester, ethylenically unsaturated fluorocarbon ester and ethylenically unsaturated sulfone monomer and methods for the polymerization thereof.Type: GrantFiled: June 6, 1986Date of Patent: May 31, 1988Assignee: Maureen J. DeVouInventor: Nick N. Novicky
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Patent number: 4594393Abstract: A halogenated ethylene-vinyl acetate-isobutene terpolymer is provided that has improved thermal stability.Type: GrantFiled: October 29, 1984Date of Patent: June 10, 1986Assignee: National Distillers and Chemical CorporationInventors: Ervin G. Pritchett, John M. Hoyt
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Patent number: 4574140Abstract: The green strength of synthetic elastomers is improved by forming copolymers from at least one type of various synthetic elastomer forming monomers with a hydroxyl containing monomer having the formula: ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are either hydrogen or a methyl group and R.sub.4 is an alkyl group having 1-10 carbon atoms and A is a methylene or carbonyl group. The green strength is further improved if a small amount of a hydroxyl ester cross-linking agent is utilized.Type: GrantFiled: June 27, 1983Date of Patent: March 4, 1986Assignee: The Goodyear Tire & Rubber CompanyInventors: Paul H. Sandstrom, Emil M. Friedman
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Patent number: 4567243Abstract: A catalyst and method in which the catalyst is active with a cocatalyst in the polymerization and copolymerization of 1-olefins and is prepared by reacting together one or more of a specific class of organic silicon compounds, a porous support or a silicon compound treated porous support, a Group IIA organometallic compound, and a Group IVB, VB transition metal compound or mixture thereof.Type: GrantFiled: October 29, 1984Date of Patent: January 28, 1986Assignee: Chemplex CompanyInventors: Thomas J. Pullukat, Yu-Tang Hwang, Robert A. Dombro
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Patent number: 4540753Abstract: The present invention relates to novel copolymers of alpha-olefins comprised of intramolecularly heterogeneous and intermolecularly homogeneous copolymer chains.Type: GrantFiled: June 15, 1983Date of Patent: September 10, 1985Assignee: Exxon Research & Engineering Co.Inventors: Charles Cozewith, Shiaw Ju, Gary W. VerStrate
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Patent number: 4433110Abstract: A propylene block copolymer produced by polymerizing propylene, ethylene and an .alpha.-olefin having 4 to 8 carbon atoms in two stages with a Zieglar-Natta catalyst by a process which comprises (A) supplying propylene and ethylene in the first stage and propylene and the .alpha.-olefin in the second stage, or (B) supplying propylene and the .alpha.-olefin in the first stage and propylene and ethylene in the second stage, to the polymerization system, wherein the amounts of propylene and ethylene supplied in the first stage of (A) or in the second stage of (B) are 90 to 99 wt % and 10 to 1 wt % based on the total amount of propylene and ethylene supplied in the first stage of (A) or in the second stage of (B), respectively, the amounts of propylene and the .alpha.-olefin supplied in the second stage of (A) or in the first stage of (B) are 60 to 98 wt % and 40 to 2 wt % based on the total amount of propylene and the .alpha.Type: GrantFiled: April 17, 1981Date of Patent: February 21, 1984Assignee: Sumitomo Chemical Company, LimitedInventors: Kazuo Baba, Shyozo Kawamata, Yoshiharu Fukui, Seiichiro Ima, Tatsuya Miyatake
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Patent number: 4424330Abstract: A copolymer based on ethylene and propylene, having a density of between 0.933 and 0.946 g/cm.sup.3 and a melt index of between 2 and 10 dg/min, wherein the copolymer has from 3 to 27 alkyl groups per 1000 carbon atoms in the molecule and wherein its density .rho. and its proportion m of alkyl groups in the molecule satisfy the relationship 0.948.ltoreq..rho.+0.71 m.ltoreq.0.9525. The copolymer is produced by feeding a flux comprising from 80 to 95% by weight of ethylene and from 5 to 20% by weight of propylene into at least one reactor in stationary operation, the reactor having at least one reaction zone; and copolymerizing the ethylene and propylene in the reactor at a pressure of from 300 to 2500 bar and a temperature of from 180.degree. to 320.degree. C. in the presence of a Ziegler type catalyst system.Type: GrantFiled: May 27, 1981Date of Patent: January 3, 1984Assignee: Societe Chimique des CharbonnagesInventor: Florent Raviola
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Patent number: 4415718Abstract: Using a catalyst comprising (1) a solid substance which contains magnesium and titanium, (2) an organometallic compound and (3) an electron donor, there are polymerized ethylene, propylene and 1-butene to obtain a soft or semi-hard terpolymer of low crystallinity containing 75.2 to 91.5 mol % propylene, 7.5 to 14.9 mol % ethylene and 1.0 to 9.9 mol % 1-butene.Type: GrantFiled: February 16, 1982Date of Patent: November 15, 1983Assignee: Nippon Oil Company, Ltd.Inventors: Mituji Miyoshi, Kazuo Matsuura, Yoshio Tajima
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Patent number: 4384089Abstract: The hydrocarbon fluid friction reducing properties of copolymers of two or more alpha-monoolefins having 4 to 20 carbon atoms is improved by copolymerizing the monomers in the liquid state by means of a Ziegler catalyst at a temperature of about 0.degree. C. or lower.Type: GrantFiled: October 15, 1981Date of Patent: May 17, 1983Assignee: Atlantic Richfield CompanyInventor: David C. Dehm
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Patent number: 4367322Abstract: In a process for producing propylene copolymer containing about 80 to 99 mol % propylene and about 1 to 20 mol % ethylene and/or an .alpha.-olefin having 4 to 18 carbon atoms using a Ziegler-Natta catalyst, the improvement which comprises said Ziegler-Natta catalyst comprising:(A) titanium trichloride prepared by reducing titanium tetrachloride with an organoaluminum compound and activating the product; and(B) an organoaluminum compound;with the molar ratio of (B)/(A) being about 20 to 100.Type: GrantFiled: August 10, 1981Date of Patent: January 4, 1983Assignee: Sumitomo Chemical Company, Ltd.Inventors: Akinobu Shiga, Kiyoshi Matsuyama, Masahiro Kakugo, Yukio Naito, Akira Nunose, Masaharu Nishioka
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Patent number: 4363904Abstract: Heterogeneous ethylene based hydrocarbon copolymers having high tear strength properties in film form, formed from ethylene, C.sub.3-4 monomer and C.sub.5-8 monomer with a molar ratio in the polymer of (C.sub.3-4 /C.sub.2) of about 0.006 to 0.09, a (C.sub.5-8 /C.sub.2) ratio of about 0.003 to 0.07 and having a Chain Branch Factor of about 0.2 to 0.8 and a narrow molecular weight distribution; a gas phase process for making such polymers, and film made from such polymers.Type: GrantFiled: March 23, 1981Date of Patent: December 14, 1982Assignee: Union Carbide CorporationInventors: William A. Fraser, Norma J. Maraschin, Frederick J. Karol, Alexander J. Makai
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Patent number: 4359561Abstract: Heterogeneous ethylene based hydrocarbon copolymers having high tear strength properties in film form, formed from ethylene, C.sub.3-4 monomer and C.sub.5-8 monomer with a molar ratio in the polymer of C.sub.3-4 /C.sub.2 of about 0.006 to 0.09, a C.sub.5-8 /C.sub.2 ratio of about 0.003 to 0.07 and having a Chain Branch Factor of about 0.2 to 0.8 and a narrow molecular weight distribution; a gas phase process for making such polymers, and film made from such polymers.Type: GrantFiled: March 23, 1981Date of Patent: November 16, 1982Assignee: Union Carbide CorporationInventors: William A. Fraser, Norma J. Maraschin, Frederick J. Karol, Alexander J. Makai
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Patent number: 4311810Abstract: A propylene copolymer, which comprises units of (A) propylene, (B) a monomer selected from the group consisting of branched alpha-olefins (i.e. 4-methyl-1-pentene), styrene and styrene derivatives (e.g. methyl styrene), and (C) an optional monomer selected from the group consisting of straight-chain alpha-olefins of 2 to 12 carbon atoms other than propylene (e.g. ethylene), and which is defined by its thermal analysis data on a differential scanning calorimeter; and a process for producing the copolymer. Block copolymers are preferable.Type: GrantFiled: April 2, 1980Date of Patent: January 19, 1982Assignee: Mitsubishi Petrochemical Co., Ltd.Inventors: Masaki Fujii, Mitsutaka Miyabayashi, Hironori Todaka, Yoshihiro Ishizaki
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Patent number: 4309522Abstract: A process for preparing an extensively amorphous butene-1-propene-ethene terpolymer having a high softening point comprises low pressure solution polymerizing butene-1, propene and ethene by contacting these monomers with a catalytically effective amount of a mixed catalyst of a thermally unstable crystalline TiCl.sub.3 .multidot.0.30 to 0.35 AlCl.sub.3 and a trialkyl aluminum or dialkyl aluminum hydride, each having alkyl groups of 2-4 carbon atoms, the atomic ratio of Al:Ti being 0.8-4.0.Type: GrantFiled: July 24, 1980Date of Patent: January 5, 1982Assignee: Chemische Werke Huels, AktiengesellschaftInventors: Johannes Dietrich, Walter Dittmann, Albert Frese, Wolfgang Kilian
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Patent number: 4178424Abstract: Thermoplastic copolymers comprise (1) tetracyclododecene, at least one alkyltetracyclododecene, or a mixture thereof copolymerized by ring opening with (2) norbornene, at least one alkylnorbornene or a mixture thereof, (3) dicyclopentadiene, and (4) at least one acyclic monoolefin or nonconjugated acyclic olefin. The copolymers can be calendered and thermoformed, for example, to make rigid automotive goods such as glovebox covers, hubcaps, and the like.Type: GrantFiled: December 29, 1978Date of Patent: December 11, 1979Assignee: The BF Goodrich CompanyInventors: Linwood P. Tenney, Parley C. Lane, Jr.
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Patent number: 4136247Abstract: Dimethylnorbornene, isopropylnorbornene or a mixture thereof is copolymerized by ring opening with (1) at least one acyclic monoolefin or nonconjugated acyclic olefin and (2) optionally, dicyclopentadiene. The copolymers are thermoplastics which can be calendered and thermoformed, for example, to make rigid automotive goods such as glovebox covers, hubcaps and the like.Type: GrantFiled: December 5, 1977Date of Patent: January 23, 1979Assignee: The B. F. Goodrich CompanyInventors: Linwood P. Tenney, Parley C. Lane, Jr.
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Patent number: 4136248Abstract: At least one alkylnorbornene, wherein the alkyl group contains from 8 to 12 carbon atoms, is copolymerized by ring opening with (1) at least one acyclic monoolefin or nonconjugated acyclic olefin and (2) optionally, dicyclopentadiene. These copolymers have substantially lower glass transition temperatures than lower alkylnorbornene copolymers and can be injection molded to make appliance housings and the like, or calendered and thermoformed to make, for example, automotive goods such as glovebox covers and the like.Type: GrantFiled: December 5, 1977Date of Patent: January 23, 1979Assignee: The B. F. Goodrich CompanyInventor: Linwood P. Tenney
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Patent number: 4136249Abstract: 1,2-Dihydrodicyclopentadiene is copolymerized by ring opening with (1) norbornene, at least one alkylnorbornene or a mixture thereof and (2) at least one acyclic monoolefin or nonconjugated acyclic olefin. The copolymers can be calendered and thermoformed, for example, to make rigid automotive goods such as glovebox covers, hubcaps, and the like.Type: GrantFiled: December 5, 1977Date of Patent: January 23, 1979Assignee: The B. F. Goodrich CompanyInventors: Linwood P. Tenney, Parley C. Lane, Jr.
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Patent number: 4113710Abstract: A process for preparing substantially linear water-soluble interpolymeric interfacially spreading polyelectrolytes, such process comprising (1) a homogeneous polymerization in an aqueous emulsion of a mixture of ethylenically unsaturated nonionic monomers wherein at least one of such monomers contains a reactive group and wherein the polymerization reaction forms an interpolymer containing nonionic functional groups, then (2) adding a coreactant compound to the aqueous emulsion in an amount sufficient to convert the interpolymer to a water-soluble polyelectrolyte having a charge which is the same as the charge of the emulsion of (1) above.Type: GrantFiled: March 10, 1977Date of Patent: September 12, 1978Assignee: The Dow Chemical CompanyInventors: Dale M. Pickelman, Sr., Ritchie A. Wessling
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Patent number: 4110528Abstract: At least one norbornene-type monomer is copolymerized with about 0% to about 95% by weight of dicyclopentadiene, based upon total polymer weight. The polymerization is primarily by ring opening and is conducted in the presence of (1) a catalyst comprising (a) at least one compound selected from the group consisting of dialkylaluminum iodides, alkylaluminum diiodides and mixtures of trialkylaluminum compounds with iodine, (b) at least one dialkylaluminum chloride or alkylaluminum dichloride and (c) at least one monomer- or solvent-soluble tungsten compound, and (2) at least one nonconjugated acyclic olefin having at least one hydrogen on each double-bonded carbon atom. Catalyst components (a) and (b) are charged before catalyst component (c). Use of a catalyst containing components (a), (b) and (c) produces easy-processing and substantially gel-free polymers, whereas a catalyst containing only (a) and (c) or only (b) and (c) produces heavily gelled polymers.Type: GrantFiled: March 28, 1977Date of Patent: August 29, 1978Assignee: The B. F. Goodrich CompanyInventor: Robert J. Minchak
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Patent number: 4107156Abstract: A gel polymer of vinyl compounds suitable for use as a coating is prepared by mixing the following four components [A], [B], [C] and [D],Component [A], an aqueous composition comprising an aqueous solvent and at least one selected from the group consisting of water-soluble or water-dispersible vinyl compounds,Component [B], at least one compound having at least one functional group selected from the groups consisting of hydroxyl group, amino group, quaternary ammonium group, aldehyde group, mercapto group and a group capable of producing a hydroxyl group aldehyde group, mercapto group or amino group in an aqueous medium,Component [C], at least one compound capable of producing ferric ion or ceric ion in an aqueous medium and,Component [D], at least one sulfur compound capable of producing S.sub.x O.sub.y.sup.Type: GrantFiled: June 30, 1975Date of Patent: August 15, 1978Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Takashi Sunamori, Noboru Nishii
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Patent number: 4067839Abstract: A hydrophilic copolymer of N,N-(C.sub.1 -C.sub.2 alkyl) acrylamide is disclosed. The copolymer is formed by reacting, based on 100 parts, from 20-80 parts of the C.sub.1 -C.sub.2 alkyl substituted acrylamide, 80-20 parts of C.sub.1 -C.sub.4 alkyl acrylates, methacrylates, or combinations, and small amounts of a cross-linking agent. The resulting copolymerization product can be equilibrated with water or other aqueous solutions to form hydrogels useful in forming shaped hydrogel articles. One particular shaped article which can be formed is a hydrophilic contact lens. A process for forming the hydrogels is also disclosed.Type: GrantFiled: December 28, 1973Date of Patent: January 10, 1978Assignee: Itek CorporationInventor: Herman S. Schultz
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Patent number: 4056671Abstract: Copolymers with improved dimensional stability under heat consisting essentially of (meth)acrylonitrile, styrene and at least one aliphatic monoolefin with 2 to 8 carbon atoms.Type: GrantFiled: May 6, 1975Date of Patent: November 1, 1977Assignee: Bayer AktiengesellschaftInventors: Heinrich Alberts, Herbert Bartl, Richard Prinz
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Patent number: 4048409Abstract: Articles such as containers made of a highly crystalline olefin polymer having improved transparency and impact strength are obtained by biaxially extending an extruded tubular body of said polymer at an orientation temperature below the melting point thereof to attain an extension magnification ratio of at least 1.5 for each of the longitudinal and lateral directions. The polymer is a statistical random copolymer of propylene and from 1.5% to 5.0%, and preferably from 3.0% to 5.0%, by weight ethylene having a melt index of 0.6 - 3.0 g/10 min. Optionally, from 0.03 to 0.20 part by weight of p-tert. butyl benzoic acid, benzoic acid or sodium benzoate are added to 100 parts by weight of said copolymer.Type: GrantFiled: March 12, 1976Date of Patent: September 13, 1977Assignee: Mitsui Toatsu Chemicals, IncorporatedInventors: Yasunori Sugita, Yasuhiko Itagaki
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Patent number: 4048424Abstract: Hydrocarbon resins comprising (a) about 45 to 85% by weight of units derived from 1,3-pentadiene, (b) about 10 to 45% by weight of units derived from .alpha.-methylstyrene, (c) about 3 to 20% by weight of units derived from cyclopentene and (d) 0 to about 20% by weight of units derived from 1,3-butadiene and having a softening point of from about 60.degree. C. to about 140.degree. C., said hydrocarbon resins being prepared by polymerizing a monomeric mixture comprising (a) about 35 to 85% by weight of 1,3-pentadiene, (b) about 10 to 50% by weight of .alpha.-methylstyrene, (c) about 5 to 30% by weight of cyclopentene and (d) 0 to 15% by weight of 1,3-butadiene in a solvent comprising at least 50% by weight of an aromatic hydrocarbon in the presence of an aluminum halide as a catalyst.Type: GrantFiled: July 29, 1975Date of Patent: September 13, 1977Assignee: Nippon Zeon Co. Ltd.Inventors: Atsuo Ishikawa, Hidemi Tsubaki, Hitoshi Takahata, Riso Iwata, Yonesaku Shinohara
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Patent number: 4028483Abstract: An interpolymer of ethylene, a monoolefin containing from 3-20 carbon atoms, a polyene, and an unsaturated organosilane in which the interpolymer is prepared by interpolymerization reaction in the presence of a Ziegler type catalyst.Type: GrantFiled: September 8, 1975Date of Patent: June 7, 1977Assignee: Copolymer Rubber & Chemical CorporationInventors: William C. Bond, Jr., Harold J. Wahlborg
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Patent number: 4025708Abstract: Cyclopentene homopolymers and copolymers are prepared by polymerizing cyclopentene alone or with one or more copolymerizable cycloolefins in the presence of (1) a catalyst comprising (a) at least one compound selected from the group consisting of dialkylaluminum iodides, alkylaluminum diiodides and mixtures of trialkylaluminum compounds with elemental iodine and (b) at least one solvent-soluble tungsten compound, (2) at least one nonconjugated acyclic olefin having at least one hydrogen on each double-bonded carbon atom, and (3) a solvent for the tungsten compound comprising at least one alkyl ester of a saturated carboxylic or dicarboxylic acid. Catalyst component (a) is charged before catalyst component (b). Use of the ester solvent causes a brief induction period allowing excellent process control and resulting in substantially gel-free polymers.Type: GrantFiled: March 24, 1975Date of Patent: May 24, 1977Assignee: The B. F. Goodrich CompanyInventors: Robert J. Minchak, Robert E. Beauregard
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Patent number: 4022961Abstract: An adduct of a fulvene and unsaturated silane produced in a Diels-Alder reaction and the interpolymerization of the adduct with ethylene, with or without propylene, with or without a polyene, in the preparation of ethylene interpolymers.Type: GrantFiled: September 8, 1975Date of Patent: May 10, 1977Assignee: Copolymer Rubber & Chemical CorporationInventors: William C. Bond, Jr., Harold J. Wahlborg
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Patent number: 4016342Abstract: In a process for producing elastomers of ethylene and C.sub.3 to C.sub.10 alpha-olefins, improved products, higher catalyst efficiency, improved monomer conversion and control of molecular weight distribution are obtained by the use of staged reactors wherein the monomer feed is divided between the reactors, the catalyst feed is added to the first reactor and the cocatalyst feed is divided with a different cocatalyst supplied to the second reactor. The process is applicable in either a divided single reactor or in the use of multiple reactors.Type: GrantFiled: January 7, 1976Date of Patent: April 5, 1977Assignee: Exxon Research and Engineering CompanyInventor: Joseph Wagensommer
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Composition with dicumyl peroxide and process for avoiding scorching of ethylene polymer composition
Patent number: 4015058Abstract: Vulcanizable ethylene polymer based compositions which are susceptible to scorching when processed at elevated temperatures, prior to vulcanization, in the presence of dicumyl peroxide, are protected against such scorching by the incorporation therein of cumene hydroperoxide and/or tertiary butyl hydroperoxide.Type: GrantFiled: January 23, 1976Date of Patent: March 29, 1977Assignee: Union Carbide CorporationInventor: Donald Lincoln Schober -
Patent number: 4013823Abstract: High yields of elastomeric copolymers of ethylene and higher alpha-olefins, or of ethylene, higher alpha-olefins and unsaturated monomers (polyenes) containing two or more double bonds are obtained by copolymerizing a mixture of the monomers in contact with a catalyst prepared by mixing a catalyst-forming component which is an organometallic compound of aluminum with a supported catalyst-forming component obtained by contacting a halogenated titanium compound with a carrier or support consisting of or comprising an anhydrous Mg or Mn halide partially or completely complexed with a Lewis base capable of forming a complex with it.The copolymers so obtained have valuable mechanical properties, in particular a relatively low value of permanent set and do not exhibit excessive residual deformation at break.Type: GrantFiled: February 7, 1975Date of Patent: March 22, 1977Assignee: The B. F. Goodrich CompanyInventors: Paolo Longi, Nazzareno Cameli, Sandro Parodi, Remo Cervi
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Patent number: 4004075Abstract: A process, and the product thereof, is provided for the manufacture of an interpolymer having a high resistance to chemical attack and a low gas and water vapour permeability, the interpolymer consisting essentially of an unsaturated nitrile, a monovinylidene aromatic compound and an alphaolefin. Also provided are foods, beverages and medicines contained in packages of the interpolymer.Type: GrantFiled: February 27, 1975Date of Patent: January 18, 1977Assignee: Polysar LimitedInventors: Michael Hugh Richmond, Henry Glyn Wright
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Patent number: 4002815Abstract: Substantially gel-free copolymers of cyclopentene with dicyclopentadiene are prepared by polymerizing these monomers in the presence of (1) a catalyst comprising (a) at least one compound selected from the group consisting of dialkylaluminum iodides, alkylaluminum diiodides and mixtures of trialkylaluminum compounds with elemental iodine and (b) at least one solvent- or monomer-soluble tungsten compound, and (2) at least one nonconjugated acyclic olefin having at least one hydrogen on each double-bonded carbon atom. Catalyst component (a) is charged before catalyst component (b).Type: GrantFiled: April 3, 1975Date of Patent: January 11, 1977Assignee: The B. F. Goodrich CompanyInventor: Robert J. Minchak
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Patent number: 3969331Abstract: Polymers of ethylene, an alpha mono-olfin, and ethylidene bicycloheptene which can be sulfur-cured to form elastomers.Type: GrantFiled: May 21, 1975Date of Patent: July 13, 1976Assignee: The Goodyear Tire & Rubber CompanyInventor: Ernest E. Fauser
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Patent number: 3968074Abstract: There are prepared reaction products of a. 4,4-bis-(hydroxymethyl)-cyclohexene compounds of the formula ##EQU1## where R.sup.1, R.sup.2 and R.sup.4 are the same or different and are hydrogen, methyl or phenyl and there is also present either (1) X as the bridging member methylene or ethylene or (2) X is absent and there are present both R.sup.3 and R.sup.5 wherein R.sup.3 and R.sup.5 are the same or different and are hydrogen, methyl or phenyl with (b) sulfur. The compounds are useful in cross-linking vulcanizable elastomers.Type: GrantFiled: February 7, 1975Date of Patent: July 6, 1976Assignee: Deutsche Gold- und Silber-Scheideanstalt vormals RoesslerInventors: Werner Schwarze, Siegfried Wolff
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Patent number: RE29654Abstract: Styrene is homopolymerized or copolymerized with alpha methyl styrene, preferably in the presence of limonene, with or without t-butyl styrene, using zirconium tetrachloride as the catalyst. The light colored resins formed are useful as .[.drying.]. .Iadd.dry .Iaddend.cleaning sizing agents and in hot melt adhesives.Type: GrantFiled: August 16, 1977Date of Patent: May 30, 1978Assignee: Schenectady Chemicals, Inc.Inventors: Kenneth C. Petersen, Royal A. Meader, Jr.