Block Copolymer Derived From Nitrogen-containing Reactant Patents (Class 525/294)
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Patent number: 7067586Abstract: Block copolymers are prepared by living-type or semi-living type free radical polymerization, with said copolymers having at least one random block comprised of at least one hydrophobic monomer and at least one hydrophilic monomer. The selection of hydrophobic and hydrophilic monomers in the random block is determined by the relative hydrophobicity of the monomers to impart selected solubility or dispersability in water and/or alcohols of the overall block copolymer.Type: GrantFiled: June 29, 2004Date of Patent: June 27, 2006Assignee: Symyx Technologies, Inc.Inventors: Mingjun Liu, Damian Hajduk, Jean M. J. Frechet, Ezat Khoshdel, Ralph B. Nielsen, Dominique Charmot
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Patent number: 7041735Abstract: The present invention provides a vinyl chloride polymer composition which comprises (i) a vinyl chloride polymer (a) and (ii) a block copolymer (b) having a polymer block (I) comprising of a block copolymer, which may be hydrogenated, of an aromatic vinyl compound polymer block and a conjugated diene polymer block, and a polymer block (II) of a polyurethane, in a specific weight ratio. The vinyl chloride polymer composition of the present invention has non-tackiness, excellent handling properties, favorable flexibility and mechanical properties, and favorable melt-adhesiveness to other materials, and shows no migration of the component serving as a plasticizer. The vinyl chloride polymer composition of the present invention can be applied for various uses such as a production of various molded articles and a production of a laminated structure with other materials.Type: GrantFiled: July 9, 2002Date of Patent: May 9, 2006Assignee: Kuraray Co., Ltd.Inventor: Hidekazu Saito
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Patent number: 6930151Abstract: Block copolymers and star polymers having copolymer arms of PIB-PAN have been synthesized via living carbocationic polymerization and atom transfer radical polymerization in a methylene chloride/cyclohexanone solvent system.Type: GrantFiled: April 3, 2003Date of Patent: August 16, 2005Assignee: University of AkronInventors: Joseph P. Kennedy, Zheng Fang, Ahmed F. Moustafa
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Patent number: 6841623Abstract: The present invention relates to nitrile rubber polymers having lower molecular weights and narrower molecular weight distributions than those known in the art. The present invention also relates to a process for the manufacture of said nitrile rubber and the use of said nitrile rubber for the manufacture of shaped articles.Type: GrantFiled: June 10, 2002Date of Patent: January 11, 2005Assignee: Bayer Inc.Inventors: Frédéric Guérin, Sharon X. Guo
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Patent number: 6828385Abstract: A process has now been discovered that permits the simultaneous crosslinking and derivation of an, optionally hydrogenated, polymer whose backbone is composed of a conjugated diene, an unsaturated nitrile and an unsaturated carboxylic acid in the presence of a coupling/condensing agent. This permits the preparation of a novel polymeric material that is an optionally hydrogenated polymer of a conjugated diene, an unsaturated nitrile and a derived unsaturated acid. It has also been found that this novel polymeric material has unexpected and valuable properties.Type: GrantFiled: October 8, 2002Date of Patent: December 7, 2004Assignee: Bayer Inc.Inventors: Janet N. Gamlin, Sharon X. Guo
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Publication number: 20040214955Abstract: AnB block copolymers, wherein n is at least two, that include A blocks with poly(vinyl pyrrolidone) units and B blocks with urethane groups, urea groups, imide groups, amide groups, ether groups, ester groups, or combinations thereof, as well as medical devices and methods.Type: ApplicationFiled: May 10, 2004Publication date: October 28, 2004Applicant: Medtronic, Inc.Inventors: Michael Eric Benz, Julie A. Alkatout, SuPing Lyu
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Patent number: 6767968Abstract: Block copolymers are prepared by living-type or semi-living type free radical polymerization, with said copolymers having at least one random block comprised of at least one hydrophobic monomer and at least one hydrophilic monomer. The selection of hydrophobic and hydrophilic monomers in the random block is determined by the relative hydrophobicity of the monomers to impart selected solubility or dispersability in water and/or alcohols of the overall block copolymer.Type: GrantFiled: October 3, 2000Date of Patent: July 27, 2004Assignee: Symyx Technologies, Inc.Inventors: Mingjun Liu, Damian Hajduk, Jean M. J. Fréchet, Ezat Khoshdel, Ralph B. Nielsen, Dominique Charmot
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Patent number: 6765069Abstract: A method for making a hydrophilic and lubricious coating, the coating so made and a medical device including such coating, wherein the coating includes a hydrophilic polymeric unit layer cross-linked with a plasma deposited double bond monomer. The hydrophilic polymeric unit can include ethylene oxide with one or more primary or secondary alcohol groups or glycosaminoglycans such as hyaluronic acid, and the double bond monomer includes monomers containing at least one double bond, preferably a C═C, C═N or C═O bond, including N-trimethylsilyl-allylamine, ethylene, propylene and allyl alcohol. The invention also provides products containing such coatings and their uses in medical, pharmaceutical and cosmetic applications.Type: GrantFiled: September 27, 2002Date of Patent: July 20, 2004Assignee: BioSurface Engineering Technologies, Inc.Inventors: Paul O. Zamora, Meng Chen, Shigemas Osaki, Ting-Ting Hsieh, Ray Tsang
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Patent number: 6750298Abstract: The invention generally concerns a novel family of biocompatible surfactant copolymers having a wide range of uses, in particular in pharmaceutics and for synthesizing substances in dispersed state and for surface treatment of materials or biomaterials. Said copolymers are characterised in that they comprise a hydrophobic sequence constituted by: either a homopolymer consisting of recurrent units corresponding to the general formula (I): in which: R1 represents a C1-C6 alkyl group or a (CH2)m—COOR3 group wherein m is an integer between 1 and 5 and R3 represents a C1-C6 alkyl group; R2 represents a C1-C6 alkyl group; and n is an integer between 1 and 5; or a random copolymer consisting of different recurring units corresponding to formula (I) as defined above; or finally a random copolymer consisting for the major part of units corresponding to formula (I) as defined above.Type: GrantFiled: September 19, 2000Date of Patent: June 15, 2004Assignee: VirsolInventors: Nicole Bru-Magniez, Virginie Larras, Gérard Riess, Pascal Breton, Patrick Couvreur, Claude Roques-Carmes
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Publication number: 20040087724Abstract: A process for manufacturing block polymer or copolymer from isotactic polypropylene. Polyolefins are introduced into an extruder. Free radical generator is mixed with the polyolefins to form a mixture at room temperature for free radical formation. The mixture is brought up to a temperature of between 175° C. to 220° C. Chain degradation of the polyolefins is induced by the free radical formation to form degraded polymer. Alkenically unsaturated monomers or polymer segments are mixed with the degraded polymer to form a second mixture. The temperature of the second mixture may be lowered to a temperature of between 90° C. to 150° C. The temperature of the second mixture is then adjusted to a temperature between 100° C. to 250° C. to form a novel block polymer or copolymer.Type: ApplicationFiled: October 31, 2002Publication date: May 6, 2004Inventors: Grant Doney, Keith Salsman
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Patent number: 6713564Abstract: A novel star block copolymer which can be made to have a high molecular weight and gives a solution having a lower viscosity than solutions of linear polymers having the same molecular weight as the copolymer and which is expected to be used as a resist material; and a process for producing the copolymer. The star block copolymer having alkenylphenol skeletons is obtained by homopolymerizing by living anion polymerization an alkenylphenol compound in which the hydroxyl group of the phenol moiety has been protected by a saturated aliphatic protective group or copolymerizing the alkenylphenol compound with a vinylaromatic compound by living anion polymerization, subsequently copolymerizing the resultant polymer using a polyfunctional coupling agent such as divinylbenzene to obtain a star block copolymer, and eliminating the saturated aliphatic protective groups with an acid reagent.Type: GrantFiled: February 26, 2002Date of Patent: March 30, 2004Assignee: Nippon Soda Co. Ltd.Inventors: Yukikazu Nobuhara, Hitoshi Matsumoto, Nakamura Mitsuhiro, Asami Kobayashi
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Publication number: 20030212213Abstract: The invention relates to a block copolymer and more especially to a thermoplastic elastomer block copolymer. The block copolymer is a diblock (block A)-(bloc B) copolymer, a triblock (block A)-(block B)-(block A), or a triblock (block A)-(block B)-(block C) copolymer, wherein block A is a stiff block, block B is a soft block, and block C is a stiff block. Block A or Block B comprises repetitive units deriving from segregation monomers.Type: ApplicationFiled: May 9, 2002Publication date: November 13, 2003Inventors: Denis Bendejacq, Mathieu Joanicot, Gilda Lizarraga, Virginie Ponsinet
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Publication number: 20030162905Abstract: AnB block copolymers, wherein n is at least two, that include A blocks with poly(vinyl pyrrolidone) units and B blocks with urethane groups, urea groups, imide groups, amide groups, ether groups, ester groups, or combinations thereof, as well as medical devices and methods.Type: ApplicationFiled: September 17, 2002Publication date: August 28, 2003Inventors: Michael Eric Benz, Julie A. Alkatout, SuPing Lyu
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Patent number: 6586530Abstract: A block copolymer including a block of residues of a low surface tension (meth)acrylate monomer; a block of residues of a monomer free of hydroxyl group and amine group residues; and, optionally, a third block of residues of a monomer free of hydroxyl groups and amine groups. The first, second and third blocks are made of different residues from each other and the block copolymer has a polydispersity index of less than 2.5. A controlled radical polymerization method is disclosed to make the low surface tension block copolymers. The method includes the steps of sequentially adding a first monomer composition that is free of hydroxyl groups and amine groups and a second monomer composition that includes the low surface tension monomer to a suitable atom transfer radical polymerization initiator and polymerizing the monomer compositions to form a block copolymer.Type: GrantFiled: September 27, 2001Date of Patent: July 1, 2003Assignee: PPG Industries Ohio, Inc.Inventors: Jonathan D. Goetz, Kurt A. Humbert, Karl F. Schimmel, Karen A. Barkac, Simion Coca, Joanne H. Smith
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Publication number: 20030114593Abstract: A block copolymer including a block of residues of a low surface tension (meth)acrylate monomer; a block of residues of a monomer free of hydroxyl group and amine group residues; and, optionally, a third block of residues of a monomer free of hydroxyl groups and amine groups. The first, second and third blocks are made of different residues from each other and the block copolymer has a polydispersity index of less than 2.5. A controlled radical polymerization method is disclosed to make the low surface tension block copolymers. The method includes the steps of sequentially adding a first monomer composition that is free of hydroxyl groups and amine groups and a second monomer composition that includes the low surface tension monomer to a suitable atom transfer radical polymerization initiator and polymerizing the monomer compositions to form a block copolymer.Type: ApplicationFiled: September 27, 2001Publication date: June 19, 2003Inventors: Jonathan D. Goetz, Kurt A. Humbert, Karl F. Schimmel, Karen A. Barkac, Simion Coca, Joanne H. Smith
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Publication number: 20030087982Abstract: A method of modifying a polymeric material which comprises the steps of activation-treatment and a hydrophilic polymer-treatment, or comprises the steps of activation-treatment, a hydrophilic polymer-treatment, and monomer grafting in this order, or comprises the step of a solvent-treatment followed by these steps. Thus, the polymeric material, e.g., polyolefin, is improved in hydrophilicity, adhesion, etc. without lowering the practical strength thereof The polymeric material thus improved in adhesion and other properties can be used in many applications where water absorption and adhesion are required, such as an absorption material, e.g., a wiping/cleansing material, a water retention material, a material for microorganism culture media, a separator for batteries (or cells), a synthetic paper, a filter medium, a textile product for clothing, a medical/sanitary/cosmetic supply, and reinforcing fibers for composite materials.Type: ApplicationFiled: August 27, 2001Publication date: May 8, 2003Inventor: Hitoshi Kanazawa
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Patent number: 6506837Abstract: The invention relates to a gelling aqueous composition comprising block copolymers containing at least one water-soluble block and at least one block predominantly hydrophobic in nature, and forming a viscoelastic gel.Type: GrantFiled: February 20, 2001Date of Patent: January 14, 2003Assignee: Rhodia ChimieInventors: Mathias Destarac, Mathieu Joanicot, Roland Reeb
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Patent number: 6495618Abstract: A polymer dispersant for pigments based on a graft copolymer wherein the graft copolymer has a weight average molecular weight of at least 3000 and has 10 to 90% by weight of a polymeric backbone and 90 to 10% by weight of macromonomer side chains attached to the backbone and wherein at least 20% by weight of the polymeric backbone has attached thereto an amide group which serves as a pigment anchoring group. The backbone may also have attached thereto an additional pigment anchoring group selected from the group consisting of aromatic ester, aromatic amine, aliphatic amine, and quaternary ammonium groups, or mixtures thereof. These materials disperse a wide variety of pigments and are useful in solvent borne coatings where they can provide improved efficiency of pigment use, lower paint viscosity, and reduced emission of volatile organic solvent.Type: GrantFiled: December 17, 1999Date of Patent: December 17, 2002Assignee: E. I. du Pont de Nemours and CompanyInventor: Sheau-Hwa Ma
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Patent number: 6451902Abstract: A nitrite polymer vulcanizate having improved hot air aging characteristics is described. The nitrile polymer vulcanizate may be produced admixing a composition comprising: (i) a nitrite polymer; (ii) a filler; (iii) an additive selected from the group comprising a strong base, a salt of a strong base and a weak acid, a salt of a weak acid, a carbodiimide, a polycarbodiimide and mixtures thereof; and (iv) a vulcanization system. A vulcanizable composition useful for producing such a vulcanizate and a method for improving the hot air aging characteristics of a nitrite polymer are also described.Type: GrantFiled: March 20, 2001Date of Patent: September 17, 2002Assignee: Bayer Inc.Inventor: Ezio Campomizzi
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Patent number: 6413306Abstract: A pigment dispersion useful for forming coating compositions containing dispersed pigment, a non-aqueous carrier liquid and an ABC-block polymer dispersant (binder); wherein the ABC block polymer has a number average molecular weight of about 5,000-20,000 and contains a polymeric A segment, a polymeric B segment and a polymeric C segment; wherein the polymeric A segment of the block polymer is of polymerized monomers selected from the following group: alkyl (meth)acrylate monomers having 1-12 carbon atoms in the alkyl group, aryl (meth)acrylate monomers, cyclo alkyl (meth)acrylate monomers or mixtures of any of the above; the polymeric B segment of the block polymer is of polymerized alkyl amino alkyl (meth)acrylate monomers having 1-4 carbon atoms in the alkyl group quaternized with an alkylating agent; and the polymeric C segment of the block polymer is of polymerized monomers of hydroxy alkyl (meth)acrylate having 1-4 carbon atoms in the alkyl group and monomers selected from the following group: alkylType: GrantFiled: October 7, 1999Date of Patent: July 2, 2002Assignee: E. I. du Pont de Nemours and CompanyInventors: Daniel C. Kraiter, Beatriz E. Rodriguez-Douglas
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Patent number: 6359081Abstract: A functional block copolymer useful as a compatibilizing agent for a blend of a condensation polymer and vinyl polymer comprises segments of a condensation polymer and a vinyl polymer derived from a reactive functional group-containing monomer or a functions-imparting monomer such as ultraviolet absorption or flame retardant functions. The block copolymer can further include a segment of a lower cohesive energy polymer. The condensation or vinyl polymer segment, or the lower cohesive energy polymer segment contains azo or peroxide groups which act as a polymerization initiator for the copolymerization of the vinyl monomer forming the vinyl polymer segment.Type: GrantFiled: April 19, 2000Date of Patent: March 19, 2002Assignees: Takiron Co., Ltd., Osaka Municipal GovernmentInventors: Masayuki Shimada, Yasuyuki Agari, Yoichiro Makimura
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Publication number: 20010044498Abstract: The invention relates to water-soluble block copolymers comprising at least one block of hydrophobic nature and at least one block of hydrophilic nature, the block of hydrophobic nature exhibiting hydrophilic units in an amount of between 33% and 99% by weight with respect to the total weight of the units of the hydrophobic block. These copolymers are preferably diblocks or triblocks and are prepared by a polymerization process referred to as a living or controlled. Control of their hydrophilic-lipophilic balance makes it possible to adjust their solubility in water and their self-association properties. These copolymers can be used in particular as adhesion agents or wetting agents.Type: ApplicationFiled: February 26, 2001Publication date: November 22, 2001Inventors: Olivier Anthony, Cecile Bonnet-Gonnet, Mathias Destarac, Roya Farhoosh, Mathieu Joanicot, Gilda Lizarraga, Roland Reeb, Jean-Marie Schwob
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Patent number: 6288173Abstract: Block copolymers containing at least two blocks are provided and comprise: (a) a first block containing residues of at least one first ethylenically unsaturated radically polymerizable monomer that is free of hydroxy functionality, e.g., 2-ethylhexyl methacrylate, and a minor amount of at least one hydroxy functional ethylenically unsaturated radically polymerizable monomer, e.g., hydroxypropyl methacrylate; and (b) a second block containing residues of at least one second ethylenically unsaturated radically polymerizable monomer that is free of hydroxy functionality, e.g., iso-butyl methacrylate, and a minor amount of at least one hydroxy functional ethylenically unsaturated radically polymerizable monomer. The calculated Tg of the second monomer of the block copolymer is at least 20° C. greater than the calculated Tg of the first monomer.Type: GrantFiled: June 3, 1999Date of Patent: September 11, 2001Assignee: PPG Industries Ohio, Inc.Inventors: Karl F. Schimmel, Karen A. Barkac, Kurt A. Humbert, Jonathan D. Goetz, James B. O'Dwyer
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Patent number: 6271308Abstract: The present invention relates to a stable polymer composition comprising a first polymer and a second polymer, which second polymer is not compatible with the first polymer, and an amount of a copolymer comprising at least one block of a polyalkadiene and at least one block of random poly(aromatic vinyl-acrylonitrile), and in which the ratio of the block copolymer to the total polymer composition is between 1:500 and 1:50. Besides, the invention relates to the use of the above block copolymer as compatibilizer and/or as modifier for the mechanical properties of polymer compositions.Type: GrantFiled: March 22, 1999Date of Patent: August 7, 2001Assignee: Rijksuniversiteit te GroningenInventors: Bert de Boer, Erik Kroeze, Georges Hadziioannou, Gerrit ten Brinke
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Patent number: 6136200Abstract: A composition for the detackification and clarification of acid and alkaline paint and lacquer waste waters and paint spray booth wastes, comprising:an inorganic-organic and/or organic adduct alloy polymer composition having the formula:A.multidot.B.sup.+ .multidot.D.sup.+wherein: A=[(SiO.sub.2 /Me.sup.I.sub.2 O).sub.u Me.sup.II.sub.m Me.sub.m.sup.III(OH).sbsp.p.sup.(SO.sbsp.4.sup.).sbsp.y.sup.(Aci) (2m+3n)-p-2y].sub.rwhere r=1 to 98% bw; u=0 to 10% bw; ##STR1## where: x=0 to 98% bw; Z is a divalent substituted or unsubstituted aliphatic, cycloaliphatic, heterocyclic or aromatic radicalD.sup.+ =(PQAM).sub.wwherew=2 to 98% b.w. of polyquaternized polymer (PQAM)Me.sub.m.sup.II is selected from the divalent cationic group comprising: Mg, Zn, Ca, and Fe.sup.2+m=0 to 5Me.sub.n.sup.III is a tri-or more valent metal selected from the group comprising: Fe, Al, and Al--Zn complexes;n=1 to 20Aci is selected from the monovalent anionic group comprising Cl.sup.-, Br.sup.-, I.sup.-, NO.sub.3 --, H.sub.2 PO.sub.4 --, CH.Type: GrantFiled: March 11, 1994Date of Patent: October 24, 2000Assignee: Polymer Research CorporationInventor: John J. Waldmann
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Patent number: 6127453Abstract: An ink jet ink composition comprising from about 0.5% to about 30% by weight of a pigment, a carrier and a hydrophobically capped oligomeric acrylamide dispersant in a ratio of dispersant:pigment from about 0.1:1 to about 5:1.Type: GrantFiled: December 21, 1998Date of Patent: October 3, 2000Assignee: Eastman Kodak CompanyInventors: David Erdtmann, Alan R. Pitt, Trevor Wear
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Patent number: 6111025Abstract: A block copolymer of a hydrophobic block of one or more hydrophobic monomers and a hydrophilic block of one or more hydrophilic monomers is prepared by polymerizing a hydrophobic monomer to prepare the hydrophobic block, using a free radical polymerization process using a stable free radical agent, preserving a stabilized active polymerization site on the hydrophobic block; adding a hydrophilic monomer to the stabilized active hydrophobic block; and further reacting the mixture to effect polymerization of the hydrophilic monomer. The polymerization of the hydrophilic monomer is conducted in an amidic solvent in which the hydrophobic block and the hydrophilic monomer are soluble.Type: GrantFiled: June 24, 1997Date of Patent: August 29, 2000Assignee: The Lubrizol CorporationInventors: Daniel C. Visger, Klaus-Werner Damm, Richard M. Lange, Barton J. Schober
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Patent number: 5981655Abstract: A process for the continuous production of a thermoplastic molding composition containing a mixture of a TPU and a thermoplastic (co)polymer is disclosed.Type: GrantFiled: January 12, 1998Date of Patent: November 9, 1999Assignee: Bayer AktiengesellschaftInventors: Herbert Heidingsfeld, Willi Meister, Bernhard Schulte, Wolfgang Brauer, Friedemann Muller, Hans-Georg Hoppe, Hans-Georg Wussow, Jurgen Winkler
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Patent number: 5948879Abstract: A maleimide-based copolymer containing maleimide monomer units (a-1), aromatic vinyl monomer units (a-2) and other vinyl monomer units (a-3), wherein,(I) the content of residual maleimide monomer in the copolymer is 0.1% by weight or less, and the content of whole volatiles other than the maleimide monomer is 0.5% by weight or less;(II) a compound obtained from at least one monomer selected from the group consisting of a maleimide monomer, an aromatic vinyl monomer and other vinyl monomers, having a weight-average molecular weight of from 200 to 1,000, is contained in an amount of 2 to 10% by weight;(III) the copolymer has a yellow index of 30 or less; and(IV) the copolymer has an intrinsic viscosity of from 0.3 to 1.5.Type: GrantFiled: October 24, 1997Date of Patent: September 7, 1999Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Hiroshi Mori, Yasuaki Ii, Hisaya Yokohama, Yasunori Tsuneshige, Seizo Fujii, Takanori Nakazato
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Patent number: 5668219Abstract: A process for the percolation leaching of minerals from a mineral-beating ore comprises agglomerating the mineral-bearing ore with an agglomerating agent of a cationic block copolymer having a polymeric segment and a block containing an ammonium cation optionally with a block derived from an acrylamide monomer, forming the ore/agglomerating agent mixture into a heap, and leaching the heap by percolation with a leaching solution for subsequent recovery of the minerals at an acidic pH.Type: GrantFiled: March 22, 1996Date of Patent: September 16, 1997Assignee: BetzDearborn Inc.Inventors: David M. Polizzotti, Wen P. Liao, Donald C. Roe
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Patent number: 5534174Abstract: Graft copolymers of a star-shaped polymer and an N-allyl amide manifest dispersant and viscosity index-improving properties.Type: GrantFiled: April 20, 1990Date of Patent: July 9, 1996Assignee: Ethyl Petroleum Additives, Inc.Inventors: Christian S. Harstick, Kenneth O. Henderson
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Patent number: 5475061Abstract: There are disclosed a styrenic copolymer which comprises at least one structural unit represented by the general formula (I) ##STR1## and a structural unit represented by the general formula (II) ##STR2## or a structural unit represented by the general formula (IX) ##STR3## wherein the symbols are each as previously defined in the specification, the structural unit (II) or (IX) being contained in an amount of 0.01 to 99.9 mol %; and a process for the production of the above copolymer.The above styrenic copolymer has a high degree of syndiotactic configuration in the stereoregularity of the main chain of the structural unit (I) as well as adhesivity and compatibility with a resin of a different type.Type: GrantFiled: June 13, 1994Date of Patent: December 12, 1995Assignee: Idemitsu Kosan Co., Ltd.Inventors: Shuji Machida, Toshinori Tazaki
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Patent number: 5391626Abstract: There are disclosed a styrenic block copolymer having a reduced viscosity of 0.01 to 20 dl/g (0.05 g/l in 1,2,4-trichlorobenzene at 135.degree. C.) which comprises highly syndiotactic styrenic-polymer segments and 10.sup.-4 to 10 mol % of heteroatom-containing styrenic polymer segments; a resin composition comprising the above styrenic block copolymer and a thermoplastic resin, an inorganic filler or an organic filler; a multi-layer material comprising at least one layer composed of the above styrenic block copolymer or the above resin composition; and a process for producing the above styrenic block copolymer which comprises polymerizing a styrenic monomer in the presence of a specific catalyst and adding a heteroatom-containing styrenic monomer to successively proceed with copolymerization reaction.Type: GrantFiled: May 20, 1993Date of Patent: February 21, 1995Assignee: Idemitsu Kosan Co., Ltd.Inventors: Shuji Machida, Toshinori Tazaki, Noriyuki Tani
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Patent number: 5368744Abstract: A method for the flocculation of wastewater comprising a block copolymer having the formula: ##STR1## wherein E is a polymeric segment obtained from the polymerization of hydrophobic monomers, x when present is a nonionic monomer, y is a cationic monomer, R.sub.1 and R.sub.2 are the same or different and are H or a lower alkyl group from C.sub.1 to C.sub.3 and F is a salt of a ammonium cation. The block copolymer is added to the wastewater particularly oily wastewater, to flocculate contaminants.Type: GrantFiled: August 3, 1993Date of Patent: November 29, 1994Assignee: Betz Laboratories, Inc.Inventors: Michael R. Wood, Stephen R. Vasconcellos
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Patent number: 5314962Abstract: An acrylate is polymerized by the photo-decomposition of ##STR1## to make a polymeric intermediate containing dithiocarbamate groups at both its ends, and a hard polymer-forming monomer is polymerized by the photo-decomposition of this dithiocarbamate group-containing polymeric intermediate to form blocks of a polymer of said hard polymer-forming monomer on both sides of said polymeric intermediate, thereby forming an ABA type block copolymer.Type: GrantFiled: June 29, 1993Date of Patent: May 24, 1994Assignee: Mitsubishi Petrochemical Company LimitedInventors: Takayuki Otsu, Shunichi Himori, Takashi Kiriyama
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Patent number: 5294352Abstract: A composition for the detackification and clarification of acid and alkaline paint and lacquer waste waters and paint spray booth wastes, comprising:an inorganic-organic and/or organic adduct alloy polymer composition having the formula:A.multidot.B.sup.+ .multidot.D.sup.+wherein:A=[(SiO.sub.2 /Me.sup.I.sub.2 O).sub.u Me.sup.II.sub.m Me.sub.m.sup.III(OH) p.sup.(SO 4.sup.) y.sup.(Aci) (2m+3n)-p-2y].sub.4wherer=1 to 98% bw;u=0 to 10% bw; ##STR1## where: x=0 to 98% bw; Z is a divalent substituted or unsubstituted aliphatic, cycloaliphatic, heterocyclic or aromatic radicalD.sup.+ (PQAM).sub.wwherew=2 to 98% b.w. of polyquaternized polymer (PQAM)Me.sub.m.sup.II is selected from the divalent cationic group comprising: Mg, Zn, Ca, and Fe.sup.2+m=0 to 5Me.sub.n.sup.III is a tri-or more valent metal selected from the group comprising: Fe, Al, and Al-Zn complexes;n=1 to 20Aci is selected from the monovalent anionic group comprising Cl.sup.-, Br.sup.-, I.sup.-, NO.sub.3 --, H.sub.2 PO.sub.4 --, CH.sub.3 COO.sup.-, OH.Type: GrantFiled: April 15, 1993Date of Patent: March 15, 1994Inventor: John J. Waldmann
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Patent number: 5234604Abstract: A composition and method of use thereof for the treatment of wastewater comprising a block copolymer having the formula: ##STR1## wherein E is a polymeric segment obtained from the polymerization of hydrophobic monomers, x when present is a nonionic monomer, y is a cationic monomer, R.sub.1 and R.sub.2 are the same or different and are H or a lower alkyl group from C.sub.1 to C.sub.3 and F is a salt of an ammonium cation.Type: GrantFiled: September 3, 1992Date of Patent: August 10, 1993Assignee: Betz Laboratories, Inc.Inventors: Wen P. Liao, Fu Chen, Stephen R. Vasconcellos
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Patent number: 5219945Abstract: This application discloses linear methacrylic ABC triblock polymers in which the composition of each of the three blocks is different and wherein at least one of the blocks is hydrophobic and at least one of the blocks is hydrophilic.Type: GrantFiled: February 20, 1992Date of Patent: June 15, 1993Assignee: E. I. Du Pont de Nemours and CompanyInventors: Ira B. Dicker, Walter R. Hertler, Sheau-Hwa Ma
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Patent number: 5182331Abstract: A composition and method of use thereof for the treatment of wastewater comprising a block copolymer having the formula: ##STR1## wherein E is a polymeric segment obtained from the polymerization of hydrophobic monomers, x when present is a nonionic monomer, y is a cationic monomer, R.sub.1 and R.sub.2 are the same or different and are H or a lower alkyl group from C.sub.1 to C.sub.3 and F is a salt of an ammonium cation.Type: GrantFiled: February 26, 1991Date of Patent: January 26, 1993Assignee: Betz Laboratories, Inc.Inventors: Wen P. Liao, Fu Chen, Stephen R. Vasconcellos
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Patent number: 5180760Abstract: An anti-fogging resin film-forming composition, comprising a block or graft copolymer and a surfactant, each of which block and graft copolymers consists of a hydrophilic polymer segment and a hydrophobic polymer segment having specifically limited monomer compositions, is disclosed. A coating film formed on a matrix surface from the composition has a durable excellent anti-fogging property and having high adhesion to the matrix surface and high strength.Type: GrantFiled: September 10, 1991Date of Patent: January 19, 1993Assignee: Nippon Oil and Fats Company, LimitedInventors: Yoshihiro Oshibe, Toshihiro Izumi, Hideki Doya, Hiroshi Ohmura, Yasuhiro Yamamoto, Keiji Kumazawa
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Patent number: 5112920Abstract: Ethylenically unsaturated diamine or triamines, a process for their polymerization and polymeric products. The resulting polymers have unique properties as chelants for metal ions.Type: GrantFiled: March 12, 1990Date of Patent: May 12, 1992Assignee: The Dow Chemical CompanyInventor: Anthony P. Haag
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Patent number: 5081191Abstract: Novel polymers prepared by anionic polymerization techniques containing phenol, silyl ether, aminophenyl functionality or carboxylic acid or ester.Type: GrantFiled: September 20, 1990Date of Patent: January 14, 1992Assignee: The Dow Chemical CompanyInventor: Roderic P. Quirk
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Patent number: 5075352Abstract: Stable latices of polymer particles insoluble in non-polar organic solvents are prepared by the attachment of the insoluble polymer particles to a stabilizer soluble in the non-polar organic solvent. The stabilizer comprises the adduct of a polymer bearing pendant azlactone groups which is soluble in non-polar organic solvents and an ethylenically unsaturated nucleophile bearing an azlactone reactive nucleophilic moiety.Type: GrantFiled: August 30, 1990Date of Patent: December 24, 1991Assignee: Minnesota Mining and Manufacturing CompanyInventor: Mohamed A. Elmasry
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Patent number: 5019634Abstract: Group Transfer Polymerization (GTP) process for preparing a "living" polymer, the process comprising contacting under polymerizing conditions in a polymerization medium, at least one acrylic or maleimide monomer with an initiator which is a tetracoordinate organosilicon, organotin or organogermanium compound having at least one GTP initiating site and a catalyst which is or is a source of an anion selected from the group consisting of bifluoride, fluoride, cyanide, azide or a selected oxyanion, or a selected Lewis acid or Lewis base, the process further characterized in that the initiator or the anion or Lewis acid catalyst is chemically attached (grafted) to a solid support that is insoluble in the polymerization medium.Type: GrantFiled: October 6, 1989Date of Patent: May 28, 1991Assignee: E. I. Du Pont de Nemours and CompanyInventors: Fritz P. Boettcher, Ira B. Dicker, Richard C. Ebersole, Walter R. Hertler
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Patent number: 4975491Abstract: Novel polymers prepared by anionic polymerization techniques containing phenol, silyl ether, aminophenyl functionality or carboxylic acid or ester.Type: GrantFiled: January 18, 1989Date of Patent: December 4, 1990Assignee: The Dow Chemical CompanyInventor: Roderic P. Quirk
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Patent number: 4835216Abstract: A conjugated diene series rubber composition comprises, as a rubber component, (a) 20.about.100% by weight of a particular conjugated diene polymer and (b) a diene polymer rubber except for the polymer (a) and is excellent in the processability at unvulcanized state and the rebound resilience, strengths at rupture and wear resistance at vulcanized state.Type: GrantFiled: September 23, 1987Date of Patent: May 30, 1989Assignee: Bridgestone CorporationInventors: Akihiko Morikawa, Fumio Tsutsumi, Mitsuhiko Sakakibara, Noboru Oshima, Tatsuro Hamada, Hiromi Fukuoka, Hideki Komatsu, Tatsuo Fujimaki
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Patent number: 4810756Abstract: Large acrylic star polymers containing single- and multi-functional monomers in the core are made by group transfer polymerization techniques, preferably by arm-first, core-first or arm- core- are approaches.Type: GrantFiled: September 30, 1986Date of Patent: March 7, 1989Assignee: E. I. Du Pont de Nemours and CompanyInventor: Harry J. Spinelli
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Patent number: 4794144Abstract: Large acrylic star polymers containing multifunctional monomers in the core are made by group transfer polymerization techniques, preferably by arm-first, core-first, or arm-core-arm approaches.Type: GrantFiled: September 30, 1986Date of Patent: December 27, 1988Assignee: E. I. Du Pont de Nemours and CompanyInventor: Harry J. Spinelli
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Patent number: 4755563Abstract: Block copolymers composed of similar monomers, but which exhibit subtantially different polarity, one of the blocks having cationic ammonium, phosphonium, or sulfonium moieties. The block copolymers, which are preferably prepared by group transfer polymerization techniques provide excellent performance as pigment dispersants, without the need for special salt-forming components.Type: GrantFiled: December 29, 1986Date of Patent: July 5, 1988Assignee: E. I. Du Pont de Nemours and CompanyInventor: Michael W. J. West
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Patent number: 4701498Abstract: Coupling agents of general formula ##STR1## and their use in a method for the termination of living polymers obtained by the anionic polymerization of dienic and/or vinylaromatic monomers.Type: GrantFiled: June 24, 1986Date of Patent: October 20, 1987Assignee: Eniricerche S.p.A.Inventors: Arnaldo Roggero, Alberto Gandini