Agent Contains An Ethylenic Group Patents (Class 525/193)
-
Patent number: 5451639Abstract: Propylene copolymers grafted with .alpha.,.beta.-ethylenically unsaturated carboxylic acids or carboxylic acid derivatives and consisting ofa.sub.1) a random propylene copolymer (A.sub.1) containing from 0.1 to 15% by weight of polymerized C.sub.2 -C.sub.10 -alk-1-enes or ofa.sub.2) a propylene copolymer (A.sub.2) comprising a random propylene copolymer (I) containing from 0.1 to 15% by weight of polymerized C.sub.2 -C.sub.10 -alk-1-enes and a random propylene copolymer (II) containing from 15 to 80% by weight of polymerized C.sub.2 -C.sub.10 -alk-1-enes or ofa.sub.3) a propylene copolymer (A.sub.3) comprising a propylene homopolymer (III) and a random propylene copolymer (IV) containing from 15 to 80% by weight of polymerized C.sub.2 -C.sub.10 -alk-1-enes,are obtainable by reacting the monomer to be grafted with the propylene copolymer (A.sub.1), (A.sub.2) or (A.sub.3) at from 1 to 300 bar, from 0.01 to 1.Type: GrantFiled: March 11, 1994Date of Patent: September 19, 1995Assignee: BASF AktiengesellschaftInventors: Bernd L. Marczinke, Juergen Kerth, Patrik Mueller, Horst Baumgartl, Peter Ittemann
-
Patent number: 5446097Abstract: A vulcanizable rubber composition comprising a conjugated diene rubber (A), an ethylene-alpha-olefin copolymer rubber (B) and a styrene oligomer (C) is provided. The composition is capable of providing a vulcanized rubber which is excellent not only in weather resistance and heat aging characteristics, but also in mechanical strength.Type: GrantFiled: September 21, 1993Date of Patent: August 29, 1995Assignee: Mitsui Petrochemical Industries Ltd.Inventors: Shuichi Nonaka, Norihito Ueki, Takashi Mishima
-
Patent number: 5439974Abstract: Adhesive blends especially suitable for adhesion to one or more polypropylene substrates consisting essentially of a mixture of a modified impact copolymer and a graft reaction product of a propylene polymer and a carboxylic acid or derivative thereof are disclosed. Composite structures incorporating such blends are also disclosed.Type: GrantFiled: October 14, 1992Date of Patent: August 8, 1995Assignee: Quantum Chemical CorporationInventor: Diana C. Mattson
-
Patent number: 5438101Abstract: A rubber composition is provided which comprises 100 parts by weight of ethylene-(meth)acrylate copolymer rubbers and/or ethylene-(meth)acrylate-unsaturated glycidyl ester copolymers, 5 to 300 parts by weight of a hydroxide of a typical metallic element belonging to Group II or III of the Mendeleev's periodic table and 0.1 to 50 parts by weight of a metallic acrylate compound. This composition keeps properties required for rubbers such as tensile strength, elasticity, scorch resistance and processability at high levels and is excellent in wear resistance and flame retardance.Type: GrantFiled: April 27, 1993Date of Patent: August 1, 1995Assignee: Sumitomo Chemical Company, LimitedInventors: Keisaku Yamamoto, Kiyoshi Ikeda, Masahiro Fukuyama
-
Patent number: 5412034Abstract: Curable elastomeric blends of fluoroelastomer and hydrocarbon elastomer in which at least one of the fluoroelastomer and hydrocarbon elastomer contains a cure site monomer.Type: GrantFiled: October 26, 1993Date of Patent: May 2, 1995Assignee: E. I. Du Pont de Nemours and CompanyInventor: David L. Tabb
-
Patent number: 5407998Abstract: The present invention provides a golf ball with preferred hit feeling, controllability and satisfactory level of flying performance and cut resistance. The golf ball comprises a core and a cover covering the core, wherein said cover is mainly made of a mixture composed of an ionomer resin and a diene type rubber at a weight ratio (ionomer resin:diene rubber) of 95:5-60:40 and said diene type rubber is crosslinked by a crosslinking agent.Type: GrantFiled: September 1, 1993Date of Patent: April 18, 1995Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Kuniyasu Horiuchi, Akira Kato
-
Photocurable composition comprising maleic anhydride adduct of polybutadiene or butadiene copolymers
Patent number: 5407784Abstract: An aqueous-developable article is made from a photoprepolymer made by reacting a maleated polyalkadienyl homo- or copolymer (e.g., polybutadiene) with an olefinically unsaturated compound capable of opening anhydride rings (e.g., hydroxyethyl methacrylate) with simultaneous chain extension using a polyalkadienyl polyol, followed by hydrolysis and neutralization with Li--, Na--, or K-containing base. When formulated with unsaturated monomers and photoinitiators, the photoprepolymer is particularly useful in making photopolymer-based flexographic printing plates.Type: GrantFiled: March 22, 1991Date of Patent: April 18, 1995Assignee: W. R. Grace & Co.-Conn.Inventors: Arthur L. Berrier, Ronald J. Kumpfmiller -
Patent number: 5403892Abstract: A dynamically vulcanized thermoplastic composition is provided which comprises a polymer blend of (a) a thermoplastic olefinic resin, such as non-elastomeric ethylene vinyl acetate copolymer; (b) an elastomeric ethylene vinyl acetate copolymer having a relatively higher vinyl acetate content; and (c) a specified elastomeric copolymer, such as halobutyl rubber, EPDM, or a halogenated copolymer of a C.sub.4 to C.sub.7 isomonoolefin and a para-alkylstyrene. Halogenated polyethylene may also be incorporated in the composition. The dynamically vulcanized thermoplastic composition is suitable for adhesion to polyvinyl chloride.Type: GrantFiled: September 25, 1992Date of Patent: April 4, 1995Assignee: Advanced Elastomer Systems, L.P.Inventors: Robert C. Puydak, Cindy B. Shulman, Donald R. Hazelton
-
Patent number: 5395891Abstract: Mixtures of A) polybutadiene gel and B) other rubbers containing C.dbd.C double bonds, the quantity of polybutadiene gel A), based on the sum of A)+B), being 1 to 70% by weight, show as vulcanizates a favorable combination of the properties hysteresis loss and abrasion resistance.Type: GrantFiled: June 14, 1993Date of Patent: March 7, 1995Assignee: Bayer AktiengesellschaftInventors: Werner Obrecht, Peter Wendling, Robert H. Schuster, Andreas Bischoff
-
Patent number: 5393831Abstract: Shelf stable nonwoven fabrics and films are made from polyolefin compositions which comprise a polyolefin which contains no more than a minor amount of a phenolic antioxidant, a water-sensitive stabilizer, a transition metal organic salt and an oxidizable unsaturated compound.Type: GrantFiled: May 5, 1993Date of Patent: February 28, 1995Assignee: Kimberly-Clark CorporationInventor: Robert L. Hudson
-
Patent number: 5384369Abstract: A partially crosslinked polymer composition comprisinga) a polymer comprising from 25 to 95% by weight of polypropylene and from 5 to 75% by weight of a propylene copolymer with copolymerized C.sub.2 -C.sub.10 -alk-1-enes, the comonomer content being from 1 to 45% by weight, based on the total polymer,b) a random ethylene copolymer containing from 5 to 20% by weight of copolymerized C.sub.3 -C.sub.10 -alk-1-enes and having a density at room temperature of from 0.89 to 0.925 g/cm.sup.3, andc) an organosilane compound of the formula (I)A.sub.4-n SiR.sub.n (I)where A are identical or different acrylates or methacrylates or vinyl groups, R are identical or different C.sub.1 -C.sub.8 -alkoxy or C.sub.1 -C.sub.8 -acetoxy groups, and n is 1, 2 or 3,can be obtained by reacting a polymer mixture of the polymer a) and the random ethylene copolymer b) with the organosilane compound c) in the presence of a free-radical initiator and in the presence of a condensation catalyst at from 180.degree. to 280.degree. C.Type: GrantFiled: May 6, 1994Date of Patent: January 24, 1995Assignee: BASF AktiengesellschaftInventors: Sibylle Brosius, Erhard Seiler, Harald Schwager, Gerhard Kress, Lothar Schlemmer
-
Patent number: 5384366Abstract: The present invention relates to a process for preparing elastomeric thermoplastic blends which comprises the following steps:a) mastication of a blend which comprises a polyolefin elastomer, polyolefin thermoplastic resin and a vulcanizing agent;b) mastication of a blend which comprises the product obtained in step (a), a polyolefin thermoplastic resin and vulcanizing agent.Type: GrantFiled: July 14, 1993Date of Patent: January 24, 1995Inventor: Guido Paganelli
-
Patent number: 5376722Abstract: There is disclosed a linear block copolymer comprising at least one triblock I-B-I, wherein I is a block of a polymerized conjugated diene of at least 5 carbon atoms, such as isoprene, and B is a block of a polymer of a conjugated diene, different from that of formula (1), of at least 4 carbon atoms, such as 1,3-butadiene. The B block is selectively hydrogenated, while each of the I blocks retains a sufficient amount of its original unsaturation to vulcanize the copolymer. There is also disclosed an alternative linear block copolymer containing at least one triblock of the first polymer block made from an aryl-substituted olefin, such as styrene, and the conjugated diene used to polymerize the block I, the second middle polymer block of the diene used to polymerize the block B, and the third polymer block which is the same as the first polymer block.Type: GrantFiled: April 11, 1994Date of Patent: December 27, 1994Assignee: Mobil Oil CorporationInventors: Thomas S. Coolbaugh, Frederick C. Loveless, Demetreos N. Matthews
-
Patent number: 5376726Abstract: Disclosed is a short fiber-reinforced rubber wherein a fibrilated polyacrylonitrile short fiber is uniformly dispersed in a rubber, and a process for producing the same.Type: GrantFiled: April 30, 1992Date of Patent: December 27, 1994Assignee: Sumitomo Rubber Industries, Ltd.Inventors: Tomoko Noyama, Akihiro Nakahara
-
Patent number: 5369168Abstract: A method for preparing a compatible blend of polyolefin and thermoplastic polyvinyl alcohol comprising:(a) melting polyolefin in the initial elements of a melt extruder,(b) adding and melt blending an unsaturated carboxylic acid or anhydride with the melted polyolefin downstream in the extruder,(c) adding peroxide to the melt blend and grafting the unsaturated carboxylic acid or anhydride onto the polyolefin, and(d) melt blending thermoplastic PVOH into the grafted polyolefin/unsaturated carboxylic acid or anhydride melt mixture.Type: GrantFiled: August 3, 1992Date of Patent: November 29, 1994Assignee: Air Products and Chemicals, Inc.Inventors: Amir Famili, Lloyd M. Robeson, James F. Nangeroni
-
Patent number: 5367022Abstract: Highly functional grafted polymeric products of a predominantly propylene polymeric composition containing a thermoplastic ethylene-propylene copolymer and a carboxylic acid or derivative grafting monomer and having a desirably low melt flow rate, adhesive blends containing such grafted polymeric products, and composite structures incorporating the adhesive blends are provided. The grafted polymeric product may be prepared by melt grafting in the presence of a free radical generating catalyst and the substantial absence of solvent under shear and at a temperature selected to minimize or avoid premature decomposition of the catalyst and vaporization losses of the catalyst and monomer.Type: GrantFiled: October 7, 1992Date of Patent: November 22, 1994Assignee: Quantum Chemical CorporationInventors: Webster W. Kiang, Edward M. Kajiwara, Diana C. Mattson
-
Patent number: 5364907Abstract: Graft copolymers comprising a poly-alpha-olefin base polymer selected from the group consisting of polyethylene, polypropylene, polystyrene, and compatible mixtures thereof, having grafted thereto an olefinic monomer. The grafted monomer is present in an amount effective to increase the amount of protein that will bind to the graft copolymer as compared with the base polymer.Also disclosed are polymer/protein compositions comprising a graft copolymer having a protein immobilized on the surface thereof, processes for the preparation of the above-described graft copolymers and compositions, methods of immobilizing proteins, and methods of immunoassay based on such immobilization.Type: GrantFiled: June 2, 1993Date of Patent: November 15, 1994Assignee: Minnesota Mining and Manufacturing CompanyInventors: Richard J. Rolando, Patrick L. Coleman, Steven L. Kangas, Thomas A. Kotnour
-
Patent number: 5362808Abstract: Partially crosslinked polyolefin blends containa) a polymer of from 25 to 97% by weight of a propylene polymer (I), which contains from 0 to 15% by weight of polymerized C.sub.2 -C.sub.10 -alka-1-enes, and of from 3 to 75% by weight of a further propylene polymer (II) which contains from 15 to 80% by weight of polymerized C.sub.2 -C.sub.10 -alka-1-enes,b) a random ethylene copolymer containing from 5 to 20% by weight of polymerized C.sub.3 -C.sub.10 -alk-1-enes and having a density of from 0.89 to 0.925 g/cm.sup.3 at room temperature,c) a rubber-like material having a Shore A hardness of from 30 to 90 andd) a bismaleimido compound of the following formula (I) ##STR1## where R is C.sub.1 -C.sub.20 -alkyl which may be interrupted by one or more oxygen atoms,C.sub.5 -C.sub.7 -cycloalkyl or C.sub.6 -C.sub.15 -aryl, each of which in turn may be substituted by one or more C.sub.1 -C.sub.10 -alkyl and/or C.sub.1 -C.sub.6 -alkoxy and/or C.sub.1 -C.sub.Type: GrantFiled: June 7, 1993Date of Patent: November 8, 1994Assignee: BASF AktiengesellschaftInventors: Sibylle Brosius, Bernd L. Marczinke, Harald Schwager
-
Patent number: 5360873Abstract: An actinic radiation-reactive pressure-sensitive adhesive composition which can be cured in air at a high speed, without irritation and bad smell, comprises1 a pressure-sensitive adhesive compound comprising an acrylate copolymer and2 an actinic radiation-curable resin comprising (1) one or more polythiol compounds and (2) one or more polyene compounds each having an least two actinic radiation-reactive acrylate carbon-to-carbon double bonds in the molecule.Type: GrantFiled: August 20, 1993Date of Patent: November 1, 1994Assignee: Asahi Denka Kogyo K.K.Inventors: Kazuo Ohkawa, Seiichi Saito
-
Patent number: 5354618Abstract: A thermoplastic resin composition having good coating affinity is disclosed, which comprises (a) from 20 to 80 parts by weight of a resin component containing a modified polyolefin resin which has been graft-modified with an unsaturated hydroxy group-containing compound or an unsaturated carboxylic acid, (b) from 80 to 20 pats by weight of a rubber component containing a copolymer rubber, and (c) a functional group-terminated oligomer in an amount of from 0.1 to 20 parts by weight per 100 parts by weight of the sum of components (a) and (b).Type: GrantFiled: March 25, 1993Date of Patent: October 11, 1994Assignee: Showa Denko K.K.Inventors: Satoru Ishigaki, Yutaka Yokoyama, Yukihiro Hisanaga, Zenichiro Izumi, Nobuyuki Mitarai, Kouichi Yamamoto
-
Patent number: 5342896Abstract: The subject invention relates to comb polymers having a halobutyl rubber backbone and to techniques for synthesizing such polymers. The comb polymers of this invention can be thermoplastic elastomers. For instance, halobutyl rubbers having sidechains which are derived from vinyl aromatic monomers are thermoplastic elastomers which can be made by a technique of the subject invention. Such thermoplastic elastomers typically have a chlorobutyl rubber backbone and side chains which are comprised of polystyrene. The subject invention more specifically discloses a process for grafting a lithium terminated vinyl aromatic polymer onto a halobutyl rubber which comprises: (1) capping the lithium terminated vinyl aromatic polymer with a diene monomer to produce a lithium terminated diene capped vinyl aromatic polymer, and (2) reacting the lithium terminated diene capped vinyl aromatic polymer with the halobutyl rubber to produce a halobutyl rubber having vinyl aromatic sidechains grafted thereto.Type: GrantFiled: June 10, 1993Date of Patent: August 30, 1994Assignee: The Goodyear Tire & Rubber CompanyInventors: George Jalics, Richard G. Bauer
-
Patent number: 5336720Abstract: An impact resistant graft polymer and an emulsion polymerization process comprising: 1) an agglomerated rubber latex made from a rubber latex and a polymerized polymeric additive, and 2) a grafted polymer.Type: GrantFiled: June 5, 1991Date of Patent: August 9, 1994Assignee: Rohm and Haas CompanyInventors: Susanna E. Richards, William L. Wills, Donna Wetzel, Anibal Rosado
-
Patent number: 5331059Abstract: The present invention relates to a hydrophilic, highly swellable hydrogel based on (co)polymerized hydrophilic monomers or based on graft (co)polymers, characterized in that it has been surface-modified by means of a mixture ofA) one or more diglycidyl phosphonates andB) one or more other reactive compounds which are capable of reacting with the functional groups in the polymer, to a process for the preparation thereof, to the use thereof, and to diglycidyl phosphonate-containing crosslinking agent mixtures.Type: GrantFiled: November 12, 1992Date of Patent: July 19, 1994Assignee: Cassella AktiengesellschaftInventors: Friedrich Engelhardt, Rudiger Funk, Ulrich Riegel, Gerlinde Ebert, Hanss-Jerg Kleiner
-
Patent number: 5322901Abstract: The disclosure describes a resin and rubber composition with good heat-shrinkability characteristics. Also described is a resin and/or rubber composition having dispersed therein a metal compound used for heating the composition.Type: GrantFiled: October 25, 1991Date of Patent: June 21, 1994Assignee: Toyoda Gosei Co., Ltd.Inventor: Mitsuru Kato
-
Patent number: 5319033Abstract: A method for preparing tapered block copolymers in a polymerization process by charging an initiator and monomers sequentially with one or more charges of first one of the monomers, then with a mixture of the two monomers, and then with one or more charges of the second monomer alternating with one or more charges of the first monomer with subsequent coupling to produce a polymodal tapered block copolymer. Suitable monomers include conjugated dienes and monovinylaromatic compounds. The copolymers are suitable for use in injection and blow molding equipment; the copolymers are particularly useful for shrink films, containers, tubes, fibers and other packaging applications.Type: GrantFiled: February 24, 1992Date of Patent: June 7, 1994Assignee: Phillips Petroleum CompanyInventors: William J. Trepka, George A. Moczygemba, Ralph C. Farrar, Jr.
-
Patent number: 5314187Abstract: A golf ball includes a core and a cover which is formed from two separate inner and outer layers. The inner layer is molded over the core and is formed from ionomer resin. The outer layer is molded over the inner layer and is formed from a blend of natural or synthetic balata and a crosslinkable elastomer such as polybutadiene. The elastomer is thermally crosslinked with a metallic salt of an unsaturated fatty acid, such as zinc diacrylate, and a crosslinking initiator such as organic peroxide.Type: GrantFiled: June 29, 1992Date of Patent: May 24, 1994Assignee: Wilson Sporting Goods Co.Inventor: James R. Proudfit
-
Patent number: 5312869Abstract: There is provided a vulcanizable rubber composition comprising(a) 100 weight parts of a polymer component comprising 10 to 40 wt. % of an ethylenically unsaturated nitrile-conjugated diene highly saturated copolymer rubber wherein the content of the conjugated diene unit in the polymer chain is 30 wt. % or less and 90 to 60 wt. % of a polyethylenic polymer,(b) 10 to 80 weight parts of a metal salt of an ethylenically unsaturated carboxylic acid, and(c) 0.2 to 10 weight parts of an organic peroxide.This composition gives a vulcanized rubber excellent not only in ozone resistance but in low temperature resistance and strength characteristics.Type: GrantFiled: March 26, 1993Date of Patent: May 17, 1994Assignee: Nippon Zeon Co., Ltd.Inventors: Akimasa Nomura, Kazuyoshi Nakajima
-
Patent number: 5312870Abstract: A method for bleaching hydrocarbon tackifier resins which comprises adding a bleaching agent to a molten resin and recovering a bleached hydrocarbon tackifier resin. The bleaching agent comprises from about 0.04 wt. % to about 0.06 wt. %, based on the weight of the reaction mixture, of an iodine supplying compound and from about 2.0 wt. % to about 10.0 wt. %, based on the weight of the reaction mixture, of an activating terpene compound. The iodine supplying compound is selected from the group consisting of elemental iodine and hydrogen iodide. The activating compound is selected from the group consisting of .alpha.-terpinene, .gamma.-terpinene, d-limonene, 1,4-cyclohexadiene and abietic acid.Type: GrantFiled: May 25, 1993Date of Patent: May 17, 1994Assignee: Arizona Chemical CompanyInventor: Theodore J. Williams
-
Patent number: 5310800Abstract: A partially crosslinked thermoplastic elastomer composition having an excellent heat-bondability is obtained by dynamically heat-treating a peroxide-crosslinking olefin copolymer rubber with an .alpha.,.beta.-unsaturated carboxylic acid or a derivative thereof in the presence of an organic peroxide.Type: GrantFiled: March 26, 1992Date of Patent: May 10, 1994Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Shizuo Shimizu, Akira Uchiyama, Kunihide Hiraoka, Katsuo Okamoto, Yasuhiko Otawa
-
Patent number: 5310792Abstract: An improved thermoplastic resin composition obtained by subjecting a mixture of at least an engineering plastic and a rubber material containing an .alpha.,.beta.-unsaturated carboxylic acids or their derivatives, to dynamic heat treatment in the presence of a carbon radical inducing agent. The thermoplastic resin composition of the invention excels in thermal resistance, rigidity, impact resistance, and moldability.Type: GrantFiled: December 30, 1991Date of Patent: May 10, 1994Assignee: Nippon Petrochemicals Company, LimitedInventor: Toshio Inoue
-
Patent number: 5308699Abstract: A thermoplastic elastomer powder for powder slush molding, comprising an elastomer composition of an ethylene-.alpha.-olefin copolymer rubber and a polyolefin resin, wherein said elastomer composition has a complex dynamic viscosity .eta.*(1) as measured at a frequency of 1 radian/sec. in a dynamic viscoelasticity measurement at 250.degree. C., of 1.5.times.10.sup.5 poise or less, a Newtonian viscosity index n calculated from the following formula by using the complex dynamic viscosity .eta.*(1) at a frequency of 1 radian/sec. and the complex dynamic viscosity .eta.*(100) at a frequency of 100 radian/sec. of 0.67 or less:n=[log.eta.*(1)-log.eta.*(100)]/2.Type: GrantFiled: October 2, 1991Date of Patent: May 3, 1994Assignee: Sumitomo Chemical Company LimitedInventors: Tadashi Hikasa, Hiroaki Mendori, Tatsuo Hamanaka, Toshio Igarashi, Yuu Shida
-
Patent number: 5308700Abstract: A thermoplastic elastomer powder for powder molding, comprising an elastomer composition of an ethylene-.alpha.-olefin copolymer rubber and a polyolefin resin, wherein said elastomer composition has a complex dynamic viscosity .eta.*(1) as measured at frequency of 1 radian/sec. in dynamic viscoelasticity measurement at 250.degree. C., of 1.5.times.10.sup.5 poise or less, a Newtonian viscosity index n calculated from the following formula by using the complex dynamic viscosity .eta.*(1) at a frequency of 1 radian/sec. and the complex dynamic viscosity .eta.*(100) at a frequency of 100 radian/sec. of 0.67 or less, and a hardness (shore D) of 45 or less:n={log.eta.*(1)-log.eta.*(100)}/2.Type: GrantFiled: October 2, 1991Date of Patent: May 3, 1994Assignee: Sumitomo Chemical Company LimitedInventors: Tadashi Hikasa, Hiroaki Mendori, Tatsuo Hamanaka, Toshio Igarashi, Yuu Shida
-
Patent number: 5304606Abstract: A thermoplastic resin composition according to the present invention comprises a polymer comprising recurring units derived from a polycyclic (meth)acrylate represented by the following formula [I] and a soft polymer in the proportion by weight of the polymer to the soft polymer of 99:1 to 40:60 ##STR1## where m is 0 or a positive integer, n is 0 or 1, R is hydrogen or methyl, R.sup.1 -R.sup.18 are each independently an atom or a group selected from the group consisting of hydrogen, halogen and hydrocarbon groups, R.sup.15 -R.sup.18, linked together, may form a monocyclic or polycyclic group which may have a double bond, or an alkylidene group, p is 0 or 1, and R.sup.a and R.sup.b each independently represent a hydrogen atom or a hydrocarbon group when p is 1.Type: GrantFiled: March 15, 1993Date of Patent: April 19, 1994Assignee: Mitsui Petrochemical Industries, Ltd.Inventor: Yohzoh Yamamoto
-
Patent number: 5302649Abstract: There are provided a pressure-sensitive adhesive and other compositions which free radical cured mixtures in which a halogenated hydrocarbon was present during free radical cure, of at least one unsaturated elastomeric polymer and at least one organic additive which is substantially nonresponsive to the action of free radicals and present in an amount sufficient to modify the properties of the cured elastomeric polymer.Type: GrantFiled: December 14, 1989Date of Patent: April 12, 1994Assignee: Avery Dennison CorporationInventors: Yukihiko Sasaki, Kevin Lossner
-
Patent number: 5298560Abstract: A partially crosslinked thermoplastic resin composition is prepared by dynamically heat-treating a thermoplastic resin (A) in the presence of a carbon radical inducing agent (B) comprising a charge transfer complex or a combination of a hydrogen donating compound and a hydrogen accepting compound.Type: GrantFiled: May 14, 1991Date of Patent: March 29, 1994Assignee: Nippon Petrochemicals Company, LimitedInventors: Fuyuki Aida, Masaaki Miyazaki, Mamoru Nagai
-
Patent number: 5296547Abstract: The present invention is directed to a novel polymodal asymmetric elastomeric block copolymer and a pressure sensitive adhesive and tape made therefrom. The novel block copolymer comprises from about 4 to about 40 percent by weight of a polymerized monovinyl aromatic compound and from about 96 to about 60 percent by weight of a conjugated diene. The block copolymer has the general formula Q.sub.n Y where Q represents an individual arm of the block copolymer and has the formula S-B; n represents the number of arms and is at least 3; and Y is the residue of a multifunctional coupling agent. Furthermore, S is a nonelastomeric polymer segment endblock of a polymerized monovinyl aromatic homopolymer, there being at least two different molecular weight endblocks in the block copolymer. The number average molecular weight of the higher molecular weight endblock (Mn).sub.H is in the range of from about 5,000 to about 50,000, and the number average molecular weight of the lower molecular weight endblock (Mn).sub.Type: GrantFiled: January 28, 1993Date of Patent: March 22, 1994Assignee: Minnesota Mining and Manufacturing CompanyInventors: Mark K. Nestegard, Jingjing Ma
-
Patent number: 5296552Abstract: An adhesive resin composition is obtained by mixing at least one member (C) selected from the group consisting of unsaturated carboxylic acids and the derivatives thereof, a free-radical initiator (D), and a mixture consisting of a crystalline polyolefin resin (A) and an amorphous or low crystalline olefin copolymer of ethylene and an .alpha.-olefin (B), to obtain a precursor mixture, melt-kneading the precursor mixture in the first half of an extruder having at least one side feeder, to obtain a modified precursor mixture, and feeding a crystalline polyolefin resin (E) from the side feeder of the extruder and mixing the resin (E) with the modified precursor mixture.The adhesive resin composition has good extrudability and exhibits high adhesive property to polar materials such as polar polymeric materials and the like.Type: GrantFiled: February 25, 1992Date of Patent: March 22, 1994Assignee: Sumitomo Chemical Company, LimitedInventors: Tadayuki Ohmae, Yoshiki Toyoshima, Hisao Tanaka, Mitsuyuki Okada, Harunori Fujita
-
Patent number: 5292811Abstract: Proposed herein is a process for preparing thermoplastic elastomers, which comprises dynamically heat treating polymer particles together with a crosslinking agent, each of the polymer particles being composed of a portion comprising a crystalline olefin polymer and portions comprising an amorphous olefin polymer, the polymer particles having an average particle diameter of at least 10 .mu.m and an apparent bulk density of at least 0.2 g/ml.Type: GrantFiled: March 18, 1993Date of Patent: March 8, 1994Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Kazuhiko Murata, Shizuo Shimizu, Mamoru Kioka, Akinori Toyota
-
Patent number: 5275887Abstract: A composition comprising (a) a vinylidene fluoride-hexafluoropropylene thermoplastic copolymer and (b) a fluoroelastomer, such as vinylidene fluoride-hexafluoropropylene elastomeric copolymer, at least one of (a) and (b) being cross-linked, exhibits excellent physical properties. The composition is particularly useful in the form of a heat recoverable article or as wire and cable insulation.Type: GrantFiled: February 11, 1992Date of Patent: January 4, 1994Assignee: Raychem CorporationInventors: Rodger G. Johnson, Carl J. Weber
-
Patent number: 5274048Abstract: The present invention relates to the use of compounds of the general formula I ##STR1## in which R denotes alkyl, alkenyl or aryl, which can be optionally substituted, as crosslinkers in the preparation of hydrogels, and to the hydrogels thus prepared and their use.Type: GrantFiled: October 8, 1991Date of Patent: December 28, 1993Assignee: Cassella AGInventors: Fritz Engelhardt, Ulrich Riegel, Hanss-Jerg Kleiner, Wolf-Dieter Muller
-
Patent number: 5266402Abstract: A pressure-sensitive adhesive comprising an acrylate matrix, and swellable, infusible, insoluble, elastomeric acrylate microspheres, each of the microspheres having discrete boundaries, the microspheres and the matrix forming an interpenetrating polymer network within the boundaries of the microspheres.Type: GrantFiled: December 18, 1990Date of Patent: November 30, 1993Assignee: Minnesota Mining and Manufacturing CompanyInventors: Joaquin Delgado, Spencer F. Silver, Margaret M. Sheridan
-
Patent number: 5264492Abstract: There is disclosed a monovinylidene aromatic polymer resin having a specific rubber particle size distribution that provides surprisingly improved combinations of product properties, such as gloss, impact resistance and tensile strength. Such resin has a first group of smaller particles having a volume average particle diameter of from about 0.2 to about 0.6 micrometers and a second group of larger particles having a volume average particle diameter of from about 2.5 to about 5 micrometers. In these resins it is further necessary in this specific rubber particle size distribution, based on 100 parts by weight rubber or rubber equivalent, that (a) particles constituting from about 20 to about 60 parts by weight of the rubber have diameters of from about 0.1 to about 0.Type: GrantFiled: October 8, 1992Date of Patent: November 23, 1993Assignee: The Dow Chemical CompanyInventor: Mehmet Demirors
-
Patent number: 5262479Abstract: Improved plasticizer resistant pressure sensitive hot melt adhesive compositions are prepared by incorporating in the adhesive polymer, tackifying resin and oil 5 to 70% by weight of the adhesive of a core shell modifier comprising a crosslinked rubbery core and a glassy thermoplastic polymer shell, the core being crosslinked by the presence therein of up to 5% by weight of a polyunsaturated monomer having two or more non-conjugated sites of unsaturation of unequal reactivity.Type: GrantFiled: November 24, 1992Date of Patent: November 16, 1993Assignee: National Starch and Chemical Investment Holding CorporationInventor: Singa D. Tobing
-
Patent number: 5262485Abstract: A thermoplastic resin composition according to the present invention comprises a polymer comprising recurring units derived from a polycyclic (meth)acrylate represented by the following formula [I] and a soft polymer in the proportion by weight of the polymer to the soft polymer of 99:1 to 40:60 ##STR1## wherein m is 0 or a positive integer, n is 0 or 1, R is hydrogen or methyl, R.sup.1 -R.sup.18 are independently an atom or a group selected from the group consisting of hydrogen, halogen and hydrocarbon groups, R.sup.15 -R.sup.18, linked together, may form a monocyclic or polycyclic group which may have a double bond, or an alkylidene group, p is 0 or 1, and R.sup.a and R.sup.b each independently represent a hydrogen atom or a hydrocarbon group when p is 1.Type: GrantFiled: January 16, 1992Date of Patent: November 16, 1993Assignee: Mitsui Petrochemical Industries, Ltd.Inventor: Yohzoh Yamamoto
-
Patent number: 5260381Abstract: A cross-linkable polyethylene-based composition useful for rotational molding and, when cured, characterized by exceptional percent elongation after long term exposure to degradation conditions, is provided. The cured composition has a high degree of crosslinking which may be a more random type of crosslinking.Type: GrantFiled: October 8, 1991Date of Patent: November 9, 1993Assignee: Neeco, Inc.Inventor: Donald G. Needham
-
Patent number: 5258466Abstract: Emulsion polymers which are prepared by free-radical polymerisation of monomers in the presence ofa) polymers of the formulae ##STR1## wherein the radicals have the meanings given in the description, and b) low-molecular anionic emulsifiers,are outstandingly suitable as surface sizes for paper. They are distinguished by a low tendency to foaming and by a wide application spectrum.Type: GrantFiled: June 12, 1991Date of Patent: November 2, 1993Assignee: Bayer AktiengesellschaftInventors: Gunter Sackmann, Joachim Konig, Fritz Puchner, Heinz Baumgen
-
Patent number: 5255922Abstract: A golf ball cover includes a blend of natural or synthetic balata and a crosslinkable elastomer such as polybutadiene. The elastomer is thermally crosslinked with a metallic salt of an unsaturated fatty acid, such as zinc diacrylate, and a crosslinking initiator such as organic peroxide.Type: GrantFiled: November 23, 1992Date of Patent: October 26, 1993Assignee: Wilson Sporting Goods Co.Inventor: James R. Proudfit
-
Patent number: 5250628Abstract: This thermoplastic composition with elastic memory comprises a mixture of about 5-20 parts by weight of polynorbornene which may be crosslinked, about 80-95 parts by weight of at least one polyolefin and an amount of plasticiser for polynorbornene sufficient for reducing its glass transition temperature down to the range of rubbers.According to the invention, the polyolefin chosen is a composition comprising 80 to 100% of at least one copolymer made of ethylene and at least one .alpha.-olefin chosen from propylene and 1-butene, said copolymer having a relative density between 0.850 and 0.890 and a flow index between 0.3 and 15 dg/min, and 0 to 20% of at least one polypropylene polymer.Applications: Air-tight seals, footwear parts, flexible tubes, damping elements, profiles for the construction and automobile industries, and the like.Type: GrantFiled: February 4, 1993Date of Patent: October 5, 1993Assignee: Elf Atochem S.A.Inventors: Brigitte M. Seguela, Patrick Kaifasz
-
Patent number: 5247018Abstract: A modified thermoplastic resin or elastomer composition having excellent paint adhesion is obtained by dynamically heat-treating a peroxide-crosslinkable olefin type copolymer and/or an olefin type plastic and a monomer containing at least one amino group and/or an unsaturated carboxylic acid or a derivative thereof in the presence of an organic peroxide. This thermoplastic resin or elastoemr composition is valuable as a material for an interior automotive trim. If a layer of this thermoplastic elastomer composition is laminated with a polyurethane layer, a laminate having excellent tensile strength and heat resistance, which is especially valuable as an interior trim of a vehicle such as an automobile, is obtained.Type: GrantFiled: May 20, 1992Date of Patent: September 21, 1993Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Toshikyuki Maeda, Yasuhiko Otawa, Katsuo Okamoto
-
Patent number: 5244976Abstract: A partially crosslinked polymer composition having a melt flow index of from 0.1 to 50 g/10 min at 230.degree. C. under a weight of 2.16 kg and comprisinga) a polymer comprising from 25 to 95% by weight of polypropylene and 5 to 75% by weight of a propylene copolymer with copolymerized C.sub.2 -C.sub.10 -alk-1-enes, the comonomer content being from 1 to 45% by weight, based on the total polymer,b) an organosilane compound of the formula (I)A.sub.4-n SiR.sub.n (i)where A are identical or different acrylates or methacrylates or vinyl groups, R are identical or different C.sub.1 -C.sub.8 -alkoxy or C.sub.1 -C.sub.8 -acetoxy groups, and n is 1, 2 or 3, obtainable by reacting the polymer a) with the organosilane compound b) in the presence of a free-radical initiator and in the presence of a condensation catalyst at from 180.degree. to 280.degree. C., and at from 1 to 100 bar and at a mean residence time of the reaction mixture of from 0.Type: GrantFiled: March 6, 1992Date of Patent: September 14, 1993Assignee: BASF AktiengesellschaftInventors: Sibylle Brosius, Klaus-Dieter Ruempler, Erhard Seiler, Susanne Hahn, Karl Huber, Rainer A. Werner