With Nitrogen-containing Reactant Patents (Class 528/363)
-
Patent number: 6054553Abstract: Polymers having recurring succinyl units are obtained by an improved process by reaction of A, an unsaturated C.sub.4 -dicarboxylic acid or a derivative thereof, with B, a nitrogen-donating compound, in a first reaction step to give a reaction mixture comprising at least one low molecular weight reaction product, and subsequent continuous feeding of the reaction mixture into a continuously operated reactor to give the polymer in a second reaction step. In a further embodiment the invention refers to polymers having recurring succinyl units prepared by reaction of an unsaturated C.sub.4 -dicarboxylic acid or a derivative thereof with a nitrogen-donating compound in a first reaction step and subsequent feeding of the reaction mixture, without intermediate isolation, into an optionally continuously operated reactor, with removal of water, and treatment of the reaction mixture at a temperature of 140 to 350.degree. C.Type: GrantFiled: November 12, 1996Date of Patent: April 25, 2000Assignee: Bayer AGInventors: Torsten Groth, Winfried Joentgen, Frank Dobert, Klaus-Peter Heise, Thomas Menzel, Ursula Pentling, Hans-Georg Pirkl, Paul Wagner, Joergen Weinschenck
-
Patent number: 6043336Abstract: An electrically conductive polymer is comprised of the reaction product of a dendrimer and an electrophoric compound which exhibits .pi.-stacking upon reduction. The reaction product which is a peripherally modified dendrimer is formed and reduced, either chemically or electrochemically, in a polar solvent. The reduced electrophoric moieties aggregate (form .pi.-stacks) to form electrically conductive pathways. The reduced peripherally modified dendrimers of the invention can be cast into films and other solid forms to provide flexible electrical conductors and semiconductors. The conductive polymers of the invention exhibit electrical conductivities comparable to that of doped polyacetalene, but are oxygen and moisture stable.Type: GrantFiled: January 26, 1998Date of Patent: March 28, 2000Assignee: Dendritech, Inc.Inventors: Larry L. Miller, Donald A. Tomalia, Robert G. Duan
-
Patent number: 6027804Abstract: Superabsorbent polymer compositions comprising a fiber-containing composition derived from cellulosic fibers, synthetic fibers or mixtures thereof which is at least partially coated with a partially hydrolyzed, internally plasticized, crosslinked, superabsorbing polymer derived from polysuccinimide and processes for preparing same.Type: GrantFiled: November 17, 1998Date of Patent: February 22, 2000Assignee: Solutia Inc.Inventors: Yueting Chou, Timothy Paul Feast, Jingen Zhang
-
Patent number: 6020457Abstract: Dendritic polymers containing disulfide functional groups which are essentially inert under non-reducing conditions, but which form sulfhydryl groups upon being subjected to a reducing agent are prepared by synthesizing dendritic polymers having a core with a disulfide linkage or by reacting a dendritic polymer with a molecule containing a disulfide linkage and reactive terminal groups. In one aspect of the invention, dendritic polymers having a single disulfide functional group at the core are provided. The single disulfide group at the core can be reduced to form two sulfhydryl groups to which other molecules, such as proteins, oligonucleotides, peptides, hormones, other dendritic polymers, non-dendritic polymers, etc., can be bound.Type: GrantFiled: September 30, 1997Date of Patent: February 1, 2000Assignee: Dendritech Inc.Inventors: June W. Klimash, Herbert M. Brothers, II, Douglas R. Swanson, Rui Yin, Ralph Spindler, Donald A. Tomalia, Yong Hsu, Roberta C. Cheng
-
Patent number: 6005069Abstract: Polysuccinimide of varying molecular weight has been prepared in a solvent system by heat polymerization of aspartic acid. The solvent system includes a sulfur oxygen acid and a sulfur oxygen acid salt. In a preferred embodiment, aspartic acid is polymerized in a liquid solvent reaction mixture at a temperature in the range of about 110.degree. C. to about 320.degree. C.Type: GrantFiled: December 18, 1996Date of Patent: December 21, 1999Assignee: Donlar CorporationInventors: Grigory Ya. Mazo, Jacob Mazo
-
Patent number: 6001956Abstract: Copolymers of polyaspartic acid which are suitable for the inhibition of scale deposition were obtained by reacting maleic acid, an additional polycarboxylic acid and ammonia in a stoichiometric excess, at 120.degree.-350.degree. C., preferably 180.degree.-300.degree. C., to provide copolymers of polysuccinimide. In a second embodiment, a polyamine was added to the reaction mix. These intermediate polysuccinimide copolymers could then be converted to the salts of copolymers of polyaspartic acid by hydrolysis with a hydroxide. Such copolymers are useful in preventing deposition of scale from water and find applications in treating water. Other applications include scale prevention additives for detergents. In addition, such copolymers inhibit dental tartar and plaque formation.Type: GrantFiled: January 9, 1998Date of Patent: December 14, 1999Assignee: Bayer AGInventors: Louis L. Wood, Gary J. Calton
-
Patent number: 6001958Abstract: The invention relates to a crosslinkable polymer for use in optics and non-linear optics, which comprises at least one chromophore, characterized in that it has, on at least two of its ends, at least one reactive end group of a different chemical type from the group predominantly used in polymerization and the preparation of a polymer skeleton. Said reactive end group comprises at least one CC, CN, CS, SS or NS double bond and/or triple bond, and/or an epoxy group and/or a thiol group or a derivative of said groups, and the polymerization groups are selected from at least one of the following groups: urethane, ester, amide, imide, ether, carbon-carbon, sulfide, silane and siloxane, urethane and ester groups being particularly preferred. Application in optical and opto-electronic materials and devices.Type: GrantFiled: October 28, 1996Date of Patent: December 14, 1999Assignee: Flamel TechnologiesInventors: Gilles Hugues Tapolsky, You Ping Chan, Remi Meyrueix, Jean-Pierre Lecomte, Michael Dickens
-
Patent number: 5998492Abstract: Disclosed are methods of producing super-absorbing polymeric networks of polyaspartates from crosslinked polysuccinimide. In one preferred aspect, polysuccinimide is first reacted with an organic crosslinking agent, preferably an organic base containing at least two primary amine groups, to form a gelled crosslinked polysuccinimide. The gelled crosslinked polysuccinimide is then base hydrolyzed to a gelled polymeric network of polyaspartate and deswollen with at least one liquid alcohol to a polymeric network of polyaspartate which demonstrates super-absorbing capability in water and in electrolyte solution. Super-absorbing polymeric networks of polyaspartates can also be produced in a single reaction vessel by sequentially crosslinking a polysuccinimide with an organic crosslinking agent in an aqueous reaction medium, optionally containing a mineral acid, and then hydrolyzing the crosslinked polysuccinimide to produce a polymeric network of polyaspartate.Type: GrantFiled: October 26, 1998Date of Patent: December 7, 1999Assignee: Donlar CorporationInventors: Joseph P. Haar, Jr., Robert J. Ross
-
Patent number: 5998491Abstract: Super-absorbing polymeric networks of crosslinked polyaspartates are produced from crosslinked polysuccinimide. Super-absorbing polymeric networks are produced in a single reaction vessel by crosslinking polysuccinimide with at least one organic polyamine crosslinking agent in the presence of at least one nitrogenous base. The reaction is carried out in an aqueous reaction mixture to produce a polymeric network of crosslinked polyaspartate.Type: GrantFiled: January 27, 1998Date of Patent: December 7, 1999Assignee: Donlar CorporationInventor: Joseph P. Haar, Jr.
-
Patent number: 5997791Abstract: Superabsorbent fiber and film compositions comprising partially acidified, hydrolyzed, internally plasticized, crosslinked, superabsorbing fibers or film derived from polysuccinimide and processes for preparing same.Type: GrantFiled: November 12, 1998Date of Patent: December 7, 1999Assignee: Solutia Inc.Inventors: Yueting Chou, Timothy Paul Feast, Jingen Zhang, David Sikora
-
Patent number: 5994495Abstract: A new class of branched dendrimeric macromolecules, is described essentially consisting of a polyvalent central nucleus and a series of polyoxaalkylene "dendra". Such molecules are characterized by the presence of at least one branch, attached either directly to the "core" or to a "dendron", which does not participate in the growth and which therefore differs from all the other functions of the macromolecule.Type: GrantFiled: May 11, 1998Date of Patent: November 30, 1999Assignee: Dibra S.p.A.Inventors: Luigia Gozzini, Monica Muttoni
-
Patent number: 5986042Abstract: A cross-linked polymer containing, in its molecule, recurring units represented by the following formula (1), and having biodegradability and high water-absorbency: ##STR1## wherein R.sub.1 is a pendant group having at least one functional group selected from the group consisting of acidic groups and salts thereof, a glycino group and salts thereof, cationic groups and betaine groups; X.sub.1 is NH, NR.sub.1 ', R.sub.1 ' being an alkyl, aralkyl or aryl group, O or S; and n.sub.1 is 1 or 2.Type: GrantFiled: January 27, 1998Date of Patent: November 16, 1999Assignee: Mitsui Chemicals, Inc.Inventors: Yoshihiro Irizato, Makoto Sukegawa, Toshio Katoh, Hiroaki Tamatani
-
Patent number: 5981691Abstract: Thermal polymerization of a salt of aspartic acid affords polyaspartate directly without hydrolyzing polysuccinimide. Copolymerization of a salt of aspartic acid with aspartic acid itself affords a copolymer of succinimide and aspartate which may be readily derivatized to produce a sulfonated, phosphonated or hydrophobized polymer.Type: GrantFiled: April 23, 1997Date of Patent: November 9, 1999Assignee: University of South AlabamaInventor: C. Steven Sikes
-
Patent number: 5969054Abstract: The present invention relates to binder compositions containingA) 40 to 95 parts by weight of OH-functional graft copolymer resins prepared by copolymerizinga) 0.1 to 10 parts by weight of polybutadienes containing at least 20% of 1,2-vinyl groups,b) 5 to 30 parts by weight of aliphatic .alpha.-olefins,c) 0.1 to 35 parts by weight of glycidyl esters of .alpha.-alkylalkane-monocarboxylic acids,d) 10 to 70 parts by weight of unsaturated, aromatic monomers,e) 5 to 60 parts by weight of hydroxyalkyl esters of acrylic and/or methacrylic acid having primary hydroxyl groups,f) 0 to 50 parts by weight of (cyclo)aliphatic esters of acrylic and/or methacrylic acid,g) 0.1 to 20 parts by weight of .alpha.,.beta.Type: GrantFiled: July 7, 1997Date of Patent: October 19, 1999Assignee: Bayer AktiengesellschaftInventors: Christian Wamprecht, Michael Sonntag, Dieter Margotte
-
Patent number: 5955549Abstract: Crosslinked poly(amino acids) useful as superabsorbent polymers and an improved process for preparing the crosslinked poly(amino acids) is disclosed. Use of polyaziridine and polyepoxide crosslinkers allows the production of superabsorbent polymers that is free of special handling steps required to process hydrogel materials using conventional preparation methods.Type: GrantFiled: May 14, 1998Date of Patent: September 21, 1999Inventors: Ching-Jen Chang, Graham Swift
-
Patent number: 5939522Abstract: A method for the preparation of a desired molecular weight polysuccinimide by the catalytic polymerization of aspartic acid in the presence of a thioether solvent. Polysuccinimide of relatively high weight average molecular weight and high purity can be produced in relatively high yields while employing a relatively low catalyst loading and relatively low temperatures.Type: GrantFiled: September 5, 1997Date of Patent: August 17, 1999Assignee: Donlar CorporationInventors: Grigory Ya. Mazo, Jacob Mazo, Barney Vallino, Robert J. Ross
-
Patent number: 5925728Abstract: A description is given of water-soluble or water-dispersible polyaspartic acid derivatives, their preparation and their use in cosmetology, especially in hair cosmetology.Type: GrantFiled: July 1, 1997Date of Patent: July 20, 1999Assignee: BASF AktiengesellschaftInventors: Son Nguyen Kim, Axel Sanner, Peter Hossel, Matthias Kroner
-
Patent number: 5919894Abstract: Polymers with repeating succinyl units, in particular polysuccinimide and polyaspartic acid, are prepared using triammonium salts, in particular triammonium phosphates.Type: GrantFiled: October 28, 1997Date of Patent: July 6, 1999Assignee: Bayer AGInventor: Rudiger Schubart
-
Patent number: 5914388Abstract: A process for the preparation of polyphosphazenes is provided that includes the cationic solution polymerization reaction of a phosphoranimine, using a main group or transition metal halide, or other appropriate halide salt, including a linear phosphazene salt of any chain length, or a preformed non-phosphazene polymer containing a main or transition metal chloride, as an initiator. In a preferred embodiment, triarmed-star polyphosphazenes having the formula N{RN(H)R'.sub.2 P--(N.dbd.PR'.sub.2).sub.n }.sub.3 are prepared via this method. Also, a methods for synthesis of the monomer Cl.sub.3 P.dbd.NSiMe.sub.3 and cyclic trimer N.sub.3 P.sub.3 X.sub.6 from the reactants N(SiR.sub.3).sub.3 and PX.sub.5 are also described.Type: GrantFiled: August 22, 1997Date of Patent: June 22, 1999Assignee: The Penn State Research FoundationInventors: Harry R. Allcock, Christopher T. Morrissey, Ian Manners, Charles H. Honeyman, James M. Nelson, Chester A. Crane, Scott D. Reeves, A. Paul Primrose, Thomas J. Hartle, R. Prange
-
Patent number: 5910564Abstract: Copolymers derived from polyamino acids with at least 75% of the units present selected from the group consisting of structural units having the general formulas (I) and (II) in which the structural elements A are identical or different trifunctional hydrocarbon radicals with 2 or 3 C atoms, wherein the copolymer contains at least three units of formula (I).Type: GrantFiled: December 6, 1996Date of Patent: June 8, 1999Assignee: Th. Goldschmidt AGInventors: Burghard Gruning, Harald Rau, Jorg Simpelkamp, Christian Weitemeyer
-
Patent number: 5889072Abstract: A process for preparing superabsorbing crosslinked polyaspartate salt by reacting crosslinked polysuccinimide having a weight average molecular weight of at least 20,000 Daltons with neat base or aqueous base wherein the ratio of water to crosslinked polysuccinimide is zero or positive up to about 10, preferably about 3.3. The resulting salt is either a solid or paste.Type: GrantFiled: February 24, 1997Date of Patent: March 30, 1999Assignee: Solutia Inc.Inventor: Yueting Chou
-
Patent number: 5888959Abstract: Process for preparing polycondensates of aspartic acid by polycondensation of aspartic acid at from 140.degree. to 300.degree. C. in the presence of sulfuric acid which has been partially neutralized with ammonia and/or amines as catalyst, and use of the reaction mixtures obtainable in this way or of the reaction mixtures neutralized with alkali metal or alkaline earth metal bases as additive to phosphate-free or reduced phosphate detergents and cleaners.Type: GrantFiled: February 12, 1997Date of Patent: March 30, 1999Assignee: BASF AktiengesellschaftInventors: Matthias Kroner, Gunnar Schornick
-
Patent number: 5886137Abstract: A process for preparing salts of polyaspartic acid by treating polycondensates in aqueous medium with bases, employing at least 0.7 equivalent of an alkali metal and/or alkaline earth metal base per mole of the aspartimide, aspartic acid and/or aspartamide units present in the polycondensates, and the bases being added within from 30 min to 20 hours to an aqueous suspension of polycondensates of aspartic acid which has been heated to 40.degree.-140.degree. C., and the reaction mixture being allowed to react further where appropriate, and the use of alkali metal and/or alkaline earth metal salts of polyaspartic acids obtainable by treating polycondensates of aspartic acid in aqueous medium with more than 1 equivalent of an alkali metal and/or alkaline earth metal base, with the molecular weight of the polycondensates being reduced, as additive to detergents and cleaners.Type: GrantFiled: February 27, 1997Date of Patent: March 23, 1999Assignee: BASF AktiengesellschaftInventors: Matthias Kroner, Gunnar Schornick, Uwe Strotmann, Volker Schwendemann, Thomas Meyer, Alfons Ludwig
-
Patent number: 5877341Abstract: Methods and devices for controlling the reaction rate of a hydrocarbon to an acid or other intermediate oxidation product by pressure drop rate adjustments. The pressure drop rate measurements arc conducted at predetermined time intervals, after stopping the feeding and exiting of gases. The pressure drop at a predetermined time interval is measured or the time it takes for the pressure to drop by a certain degree. Adjustments are then made in one or more temperature, feeding rates of hydrocarbon, solvent, catalyst, promoter, and the like until the pressure drop rate and the reaction rate fall within desirable predetermined limits.Type: GrantFiled: May 12, 1998Date of Patent: March 2, 1999Assignee: Twenty-First Century Research CorporationInventors: Eustathios Vassiliou, Mark W. Dassel, David C. DeCoster, Ader M. Rostami, Sharon M. Aldrich
-
Patent number: 5871713Abstract: Biological or synthetic macromolecular polyamine compound. optionally of the dendrimer type, characterized in that it carries at least three radio-opaque iodine-containing derivatives.Type: GrantFiled: August 16, 1996Date of Patent: February 16, 1999Assignee: Guerbet S.A.Inventors: Dominique Meyer, Soizic Le Greneur
-
Patent number: 5864002Abstract: A method of providing for manufacturing a colored polymer resin having the steps of:(a) blending a disazo colorant into a mixture of monomers, the colorant having a poly(oxyalkylene) substituent comprising from 2 to 200 alkylene oxide residues, bonded to each end of the disazo chromophore, the poly(oxyalkylene) substituent having a nucleophilic terminal group which is capable of reacting with at least a portion of the monomers;(b) providing conditions under which the monomers and disazo colorant polymerize to form a colored polymer resin.Type: GrantFiled: October 18, 1996Date of Patent: January 26, 1999Assignee: Milliken Research CorporationInventors: Eric B. Stephens, Mark E. Ragsdale, David J. Moody
-
Patent number: 5859149Abstract: A process for preparing polyaspartic acid salt by bringing solid polysuccinimide and solid alkali metal hydroxide or alkaline earth metal hydroxide into reactive contact to form solid polyaspartate metal salt. The salt is granular and free-flowing.Type: GrantFiled: February 7, 1997Date of Patent: January 12, 1999Assignee: Solutia Inc.Inventor: David A. Martin
-
Patent number: 5859179Abstract: A method of preparing superabsorbent polymer as crosslinked polyaspartate salt by reacting polysuccinimide dissolved in organic solvent with crosslinker and reacting the polysuccinimide in situ with neat or a solution of alkali metal hydroxide to form the crosslinked salt.Type: GrantFiled: March 17, 1997Date of Patent: January 12, 1999Assignee: Solutia Inc.Inventor: Yueting Chou
-
Patent number: 5853611Abstract: The present invention relates to a polyether polymer having structural units represented by general formula (1), wherein R.sup.1 and R.sup.2 mean individually an alkyl group of 1-20 carbon atoms, which may have at least one hydroxyl group, and Y denotes an alkylene group of 1-10 carbon atoms, which may have a hydroxyl group, a preparation process thereof, and a moisturizer, a cosmetic composition and a detergent composition comprising this polymer. The cosmetic composition and detergent composition are excellent in moisture retention, keep up the moisturizing effect over a long period of time and give users a pleasant feeling.Type: GrantFiled: September 11, 1997Date of Patent: December 29, 1998Assignee: Kao CorporationInventors: Hiroshi Kawamukai, Katsuhiko Rindo, Takashi Oda, Masaaki Moriyama, Hideyuki Hanazawa, Yasushi Kajihara
-
Patent number: 5854378Abstract: This invention an aspartic acid copolymer obtained by copolymerizing a monomer mixture comprising (1) aspartic acid, maleamic acid and/or a reaction product of maleic acid and ammonia as a main monomer, (2) fumaric acid, and (3) succinic acid and containing 0.005 to 3% by weight, based on the total monomers, of ammonia in the form of an ammonium salt and hydrolyzing the resulting copolymer partially or completely; and a process for producing the same.Type: GrantFiled: December 12, 1996Date of Patent: December 29, 1998Assignee: Mitsubishi Chemical CorporationInventors: Masayuki Tomida, Masako Yoshikawa, Takeshi Nakato
-
Patent number: 5852159Abstract: The present invention relates to plastics comprising a high molecular weight, sterically hindered amine, wherein the sterically hindered amine is at least one amine from the group consisting ofI: oligomerized 2,2,4,4-tetramethyl-20(oxiranylmethyl)-7-oxa-3,20-diazadispiro?5.1.11.2!he neicosan-21-one,II: condensation product of 2-chloro-4,6-di(4-n-butylamino-1,2,2,6,6-pentamethylpiperidyl)-1,3,5-triaz ine and 1,2-bis(3-aminopropylamino)ethane, andIII: condensation product of 1-hydroxyethyl-2,2,6,6-tetramethyl-4-hydroxypiperidine and succinic acid.These plastics exhibit a reduced rate of uptake of sulfur compounds.The invention further relates to shaped articles made from these plastics.Type: GrantFiled: May 10, 1996Date of Patent: December 22, 1998Assignee: Hoechst AktiengesellschaftInventors: Matthias Zah, Gerhard Pfahler, Karl Gaa, Klaus Keck-Antoine
-
Patent number: 5847021Abstract: The invention relates to a solvent-free radiation curable, optical glass fiber coating composition containing:a) a urethane oligomer having a functional group capable of polymerization in the presence of actinic radiation, with an average functionality of at least about 1.2, having a vinyl addition polymer as backbone.b) a urethane compound having a functional group capable of polymerization in the presence of actinic radiation, with an average functionality of at least about 1, containing an organic moiety having about 5 or more carbon atoms as backbone.c) a reactive diluent.Furthermore, the invention relates to a solvent-free method for producing a solvent-free, radiation curable urethane oligomer composition.Type: GrantFiled: November 1, 1996Date of Patent: December 8, 1998Assignee: DSM N.V.Inventors: Anthony J. Tortorello, Edward J. Murphy
-
Patent number: 5844066Abstract: The present invention provides a process for the preparation of a lactic acid-based polyester having an excellent moldability, storage stability and biodegradability which has a less residual lactide left therein and is less susceptible to decomposition of lactic acid-based polyester and attachment of sublimed lactide to the molding apparatus, etc. at the devolatilization step and molding step after the polymerization reaction of lactic acid-based polyester. In the present invention, an organic chelating agent is added to a lactic acid-based polyester to deactivate the esterification catalyst used in the preparation of the lactic acid-based polyester, making it possible to inhibit the decomposition of lactic acid-based polyester at the devolatilizing process and molding process after polymerization reaction.Type: GrantFiled: September 10, 1996Date of Patent: December 1, 1998Assignee: Dainippon Ink and Chemicals, Inc.Inventor: Yasutoshi Kakizawa
-
Patent number: 5844017Abstract: The present invention describes a prepolymer of aliphatic polyoxaesters containing amines and/or amido groups having polymerizable end groups that may be used to produce surgical devices such as sutures, sutures with attached needles, molded devices, and the like.Type: GrantFiled: November 17, 1997Date of Patent: December 1, 1998Assignee: Ethicon, Inc.Inventors: Dennis D. Jamiolkowski, Rao S. Bezwada
-
Patent number: 5840829Abstract: An adhesive is provided for bonding cyanate ester composite parts together which is also plateable with metal once chemically etched. The adhesive comprises a polymeric matrix and a filler of cyanate ester polymer. The polymeric matrix comprises at least one polyepoxide resin and a curing agent, while the cyanate ester polymer filler is present in the adhesive as a powder. In practice, the present adhesive is applied to the surface of cyanate ester composite articles to be bonded and is allowed to cure at room temperature. Thereafter, the surface of the assembly is chemically etched and then plated with metal. The present adhesive enable the complete coverage of the cyanate ester composite assembly with the plated metal, including the adhesive bondlines.Type: GrantFiled: November 25, 1997Date of Patent: November 24, 1998Assignee: Hughes Electronics CorporationInventors: Ralph D. Hermansen, Brian M. Punsly, Wai-Cheng Seetoo
-
Patent number: 5837750Abstract: Provided is a radiation-curable, glass optical fiber coating composition which when suitably cured exhibits resistance to attack from hydrocarbon gel cable filing material. The composition containsabout 10 to about 90% by weight of a first radiation-curable oligomer;from 0 to about 40% by weight of a reactive diluent;from 0 to about 40% by weight of a photoinitiator;from 0 to about 10% by weight of a pigment; andabout 10 to about 90% by weight of a second radiation-curable oligomer according to the following formula:R.sup.1 -L.sup.1 -C.sup.1 -L.sup.2 -R.sup.2 (1)where:R.sup.1 and R.sup.2, independently, each represent a radiation-curable functional group;L.sup.1 and L.sup.2, independently, each represent an alkyleneoxy chain having from about 2 to about 40 carbon atoms, wherein L.sup.1 and L.sup.2 are linked to C.sup.1 through an oxygen atomC.sup.1 comprises a hydrocarbon having from about 5 to about 40 carbon atoms and containing at least one cyclic group.Type: GrantFiled: March 12, 1996Date of Patent: November 17, 1998Assignee: DSM N.V.Inventors: David M. Szum, Timothy E. Bishop, Steven R. Schmid
-
Patent number: 5834568Abstract: A process for crosslinking polysuccinimide (PSI) by reacting dry PSI with an N-containing crosslinker.Type: GrantFiled: March 17, 1997Date of Patent: November 10, 1998Assignee: Solutia, Inc.Inventor: Yueting Chou
-
Patent number: 5830986Abstract: Methods are provided for the synthesis of poly(ethylene oxide) ("PEO") star macromolecules including functionalizable groups. In one embodiment, a core molecule including a plurality of dendritic branches or having a comb structure, and including a plurality of accessible reactive groups is reacted with functionalizable poly(ethylene oxide) ("PEO") molecules. The functionalizable poly(ethylene oxide) molecules include a reactive group capable of reacting with the reactive group on the core molecule, and a functionalizable group capable of being chemically modified, which optionally is protected. In the reaction, the PEO molecules are covalently attached to the core molecule, to form a PEO star macromolecule with terminal functionalizable groups. Preferably, the functionalizable PEO is a heterofunctional linear PEO which includes the reactive group at one terminus and the functionalizable group at the other terminus.Type: GrantFiled: October 28, 1996Date of Patent: November 3, 1998Assignee: Massachusetts Institute of TechnologyInventors: Edward W. Merrill, Diane Rintzler Yen, Ambuj Sagar
-
Patent number: 5830987Abstract: An amino-acrylate polymer is prepared by the reaction of an aliphatic hydroxyl polyacrylate monomer, like pentaerythritol triacrylate, with a polyamine like a hexyldiamine to provide a rigid fast gelling and curing polymer, which polymer may be modified with resin modifiers. The amino-acrylate polymer may be used in the preparation of composite structures with fibers and filler materials.Type: GrantFiled: March 11, 1997Date of Patent: November 3, 1998Assignee: Hehr International Inc.Inventor: Stuart B. Smith
-
Patent number: 5830985Abstract: A process for preparing polyaspartic acid by polycondensation of fine-particle aspartic acid at temperatures above 150.degree. C. in the presence of acidic catalysts, wherein first contact between the acidic catalysts and the fine-particle aspartic acid takes place in the reaction zone where the polycondensation takes place.Type: GrantFiled: February 12, 1997Date of Patent: November 3, 1998Assignee: BASF AktiengesellschaftInventors: Matthias Kroner, Gunnar Schornick, Hans-Jacob Feindt, Thomas Meyer, Alfons Ludwig, Udo Metzmann
-
Patent number: 5817742Abstract: Polymer-based polyvalent malonic acid derivatives having anti-adhesive properties are described. The compounds comprise a polyamino acid linked to a group of formula (I). In formula (I), R.sup.1 and R.sup.2 together form a six-membered carbocylic or heterocyclic ring, containing at least one substituent selected from R.sup.4, R.sup.5, and R.sup.6. R.sup.3 is H, (CH.sub.2) .sub.m X or CH.sub.2 O(CH.sub.2).sup.m X.sup.1. The polyamino acid and the group of formula II are linked via R.sup.4, R.sup.5, or R.sup.6, or optionally via a spacer of formula --?Q.sup.1 --(CH.sub.2).sub.p --Q.sup.2 --!.sub.r. A and B independently are O, S, NH, HN--CO, OC--NH, O--CO, OC--O, NH--CO--O, --O--CO--NH, S--CO, SC--O, O--CS--S, S--CS--OS, NH--CS--S, S--CS--NH, or CH.sub.2. Z is a pyranose, furanose, open-chain polyalcohol or Y--X.sup.6. Y is --O--(CX.sup.2,X.sup.3).sub.n, -(CX.sup.2,X.sup.3).sub.n, --CH.sub.2 --(CX.sup.2,X.sup.3).sub.Type: GrantFiled: September 11, 1996Date of Patent: October 6, 1998Assignee: Hoechst AktiengesellschaftInventors: Alexander Toepfer, Gerhard Kretzschmar, Eckart Bartnik, Wolfgang Schmidt, Brigitte Horsch
-
Patent number: 5811032Abstract: A water-soluble polymer prepared by melting and reacting a mixture of an oxycarboxylic acid having a melting point of 170.degree. C. or less and maleamic acid, or a mixture of a plurality of oxycarboxylic acids including at least one oxycarboxylic acid having a melting point of 170.degree. C. or less and maleamic acid, at a temperature of 170.degree. C. or less at the start of the reaction to obtain a polymer; and then hydrolyzing the polymer.Type: GrantFiled: September 19, 1996Date of Patent: September 22, 1998Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Ryozo Kawai, Hiroshi Kurata, Yukari Shimizu, Shoichiro Kajiwara
-
Patent number: 5807971Abstract: A new class of branched dendrimeric macromolecules, is described essentially consisting of a polyvalent central nucleus and a series of polyoxaalkylene "dendra". Such molecules are characterized by the presense of at least one branch, attached either directly to the "core" or to a "dendron", which does not participate in the growth and which therefor differs from all the other functions of the macromolecule.Type: GrantFiled: September 13, 1996Date of Patent: September 15, 1998Assignee: Dibra S.p.A.Inventors: Luigia Gozzini, Monica Muttoni
-
Patent number: 5804639Abstract: Pigment preparations having a solids content of greater than 40% comprise, as dispersing agents, polymers having recurring succinyl units, in particular polyaspartic acid.Type: GrantFiled: October 22, 1996Date of Patent: September 8, 1998Assignee: Bayer AGInventors: Gert Schopwinkel, Kai Butje, Gunter Wieghaus, Richard Bathke, Torsten Groth, Winfried Joentgen
-
Patent number: 5792828Abstract: A salt of an acrylamidoalkanesulfonic acid can be conveniently prepared by preparing a solid mixture of a normally solid acrylamidoalkanesulfonic acid and a basic compound which is reactive with the acrylamidoalkanesulfonic acid to form the salt. The solid mixture is combined with a solvent in which neutralization of the acrylamidoalkanesulfonic acid occurs.Type: GrantFiled: November 8, 1996Date of Patent: August 11, 1998Assignee: The Lubrizol CorporationInventor: Robert E. Quinn
-
Patent number: 5792827Abstract: The present invention relates to addition products ofA) oligomers having at least two acrylic ester and/or methacrylic ester groups per molecule andB) diamines having a primary and a tertiary amino group,the ratio of primary amino groups of B) to the (meth)acrylic double bonds of A) being 0.01:1 to 0.2:1, preferably 0.03:1 to 0.1:1.The invention also relates to processes for the preparation of the addition products, to radiation-curable surface coating compositions based on the addition products and to the use of the surface coating compositions for woodcoating and papercoating.Type: GrantFiled: August 14, 1995Date of Patent: August 11, 1998Assignee: BASF Lacke + Farben, AGInventors: Horst Hintze-Bruning, Klaus Cibura, Wolfgang Baltus
-
Patent number: 5783654Abstract: In a process for the preparation of poly-o-hydroxyamides and poly-o-mercaptoamides, a bis-o-aminophenol or a bis-o-aminothiophenol is reacted with a dicarboxylic acid ester with the following structure:G--O--CO--R*--CO--O--G,where G is an (optionally substituted) succinimide or maleinimide group and R* is the parent body of the dicarboxylic acid.Type: GrantFiled: August 29, 1996Date of Patent: July 21, 1998Assignee: Siemens AktiengesellschaftInventors: Recai Sezi, Hellmut Ahne
-
Patent number: 5780159Abstract: The invention concerns optical elements made from polycyanurate resins, wh exhibit a refractive index, at 633 nm, in the range from 1.45 to 1.70 and an optical absorption, at 1.3 or 1.55 .mu.m, in the range from 0.1 to 1.0 dB/cm.Type: GrantFiled: July 30, 1996Date of Patent: July 14, 1998Assignee: Fraunhofer-Gesellschaft zur Forderung der Angewandten Forschung e.V.Inventors: Monika Bauer, Hartmut Kruger, Andreas Brauer, Peter Dannberg
-
Patent number: 5780581Abstract: An adhesive is provided for bonding cyanate ester composite parts together which is also plateable with metal once chemically etched. The adhesive comprises a polymeric matrix and a filler of cyanate ester polymer. The polymeric matrix comprises at least one polyepoxide resin and a curing agent, while the cyanate ester polymer filler is present in the adhesive as a powder. In practice, the present adhesive is applied to the surface of cyanate ester composite articles to be bonded and is allowed to cure at room temperature. Thereafter, the surface of the assembly is chemically etched and then plated with metal. The present adhesive enable the complete coverage of the cyanate ester composite assembly with the plated metal, including the adhesive bondlines.Type: GrantFiled: October 27, 1995Date of Patent: July 14, 1998Assignee: Hughes Aircraft CompanyInventors: Ralph D. Hermansen, Brian M. Punsly, Wai-Cheng Seetoo
-
Patent number: RE36234Abstract: Aspartic acid precursors such as mono and diammonium maleate, maleamic acid, ammonium maleamate, ammonium malate and mixtures of these and other precursors are copolycondensed thermally with a variety of mono, di and multifunctional monomers containing amino, hydroxyl and carboxyl functional groups. The resulting condensation copolymers and terpolymers contain succinimide units derived from aspartic acid precursors, condensed with other functional group monomers usually .?.though.!. .Iadd.through .Iaddend.amide and ester linkages. Hydrolysis of the polysuccinimide copolymers and terpolymers with alkali, alkaline earth and ammonium hydroxide produces aspartic acid copolymer and terpolymer salts.Type: GrantFiled: December 22, 1997Date of Patent: June 22, 1999Assignee: Donlar CorporationInventors: Larry P. Koskan, James F. Kneller, Daniel A. Batzel