Patents Examined by Joseph L. Schofer
  • Patent number: 5756078
    Abstract: Aqueous preparations comprising an alkyl polyglycoside and a polyethylene glycol ether derivative of the formula I ##STR1## where R.sup.1 is alkyl having 8-22 carbon atoms,A is a divalent radical derived from a diisocyanate andn is 20-400are described.
    Type: Grant
    Filed: February 3, 1997
    Date of Patent: May 26, 1998
    Assignee: BASF Aktiengesellschaft
    Inventors: Knut Oppenlander, Gunter Oetter, Hans-Ulrich Wekel
  • Patent number: 5756620
    Abstract: Modified polytetrafluoroethylene fine powder made with initiator reduced towards the end of dispersion polymerization yields sintered paste extrudate having good surface smoothness.
    Type: Grant
    Filed: October 7, 1996
    Date of Patent: May 26, 1998
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Ralph Munson Aten
  • Patent number: 5756591
    Abstract: A network polymer that contains:(a) a plurality of polymer chains which are derived from one or more ethylenically-unsaturated monomer(s), and(b) at least one linking group which links the polymer chains and which contains anhydride, carbonate, or uretidinedione moieties.The network polymer and other network polymers which contain similar dissociating groups are useful in curable formulations which contain a curable compound that contains:(a) a central moiety, and(b) a plurality of reactive groups which are bonded to the central moiety and which react with acid, hydroxyl, or isocyanate moieties liberated by dissociation of the anhydride, carbonate, or uretidinedione moieties.The curable composition builds viscosity more slowly and more controllably during curing than equivalent systems which do not contain the network polymer. It is useful in coatings and other uses for curable compositions.
    Type: Grant
    Filed: May 29, 1997
    Date of Patent: May 26, 1998
    Assignee: The Dow Chemical Company
    Inventors: Duane S. Treybig, Clinton J. Boriack
  • Patent number: 5753759
    Abstract: Graft polymers which contain N-vinyl units and in which the grafting base is a polymer which contains in each case at least 5% by weight of units of the formulae ##STR1## where R.sup.1 and R.sup.2 are each H or C.sub.1 -C.sub.6 -alkyl, monoethylenically unsaturated monomers are grafted onto the grafting base in a weight ratio of from 100:1 to 1:100, and which have K values of at least 7 (determined according to H. Fikentscher in 5% strength by weight aqueous solution at 25.degree. C. and pH 7), are prepared by polymerization of monoethylenically unsaturated monomers in the presence of polymers which in each case contain at least 5% by weight of units of the formulae I and/or II as the grafting base in a weight ratio of from 100:1 to 1:100, and are used as dispersants for pigments, as additives for detergents and cleaning agents, and strength agents for paper and as soil stabilizers and for fertilizer compaction.
    Type: Grant
    Filed: October 24, 1996
    Date of Patent: May 19, 1998
    Assignee: Basf Aktiengesellschaft
    Inventors: Heinrich Hartmann, Walter Denzinger, Claudia Nilz
  • Patent number: 5753772
    Abstract: There is a need for polymers which are utilized in automotive interiors which offer good color stability as well as a high level of heat and ultraviolet light resistance. It is particularly critical for polymers which are utilized in making skin compounds for automotive instrument and door panels to have excellent color stability as well as excellent heat and ultraviolet light resistance.
    Type: Grant
    Filed: July 17, 1997
    Date of Patent: May 19, 1998
    Assignee: The Goodyear Tire & Rubber Company
    Inventors: Jaclyn Beth Laurich, Gary Lee Burroway, James Walter Horvath
  • Patent number: 5750770
    Abstract: Hydroxy functional, unsaturated diesters are disclosed that comprise the esterification reaction products of unsaturated anhydrides with secondary alcohols to form monoesters, followed by oxyalkylation of the monoester with epoxy compounds, whereby a diester is formed with hydroxy functionality. Use of secondary alcohol yields monoesters less prone to disproportionation. The unsaturated diesters may be copolymerized with vinyl monomers to form hydroxy functional copolymers useful in coating applications, wherein they may be included in compositions along with a curing agent that is reactive with hydroxy groups.
    Type: Grant
    Filed: October 10, 1995
    Date of Patent: May 12, 1998
    Assignee: PPG Industries, Inc.
    Inventors: Edward E. McEntire, Lyle L. Foringer
  • Patent number: 5750606
    Abstract: An aqueous fluorine-containing polymer dispersion, which comprises a fluorine-containing polymer, a nonionic surfactant and a preservative having at least one halogen atom on a carbon atom having an electron attractive group or a preservative having methylol group or methylene group and releasing formaldehyde, is provided. The above-mentioned dispersion is free of putrefying odor and suspended matters, is excellent in stability for a long period of time without pH decrease and does not generate any cissing and aggregation at the time of coating such as impregnation.
    Type: Grant
    Filed: February 3, 1997
    Date of Patent: May 12, 1998
    Assignee: Daikin Industries, Ltd.
    Inventors: Toshiro Miura, Yoshihiro Soda, Tadao Hayashi
  • Patent number: 5750751
    Abstract: Glycol co-esters of drying-oil fatty acids and polymerizable unsaturated carboxylic acids are formed by a novel bi-phase catalysis in liquid-liquid or liquid-solid dispersions. The co-esters form directly from drying-oil acids and partial glycol esters of vinylic carboxylic acids, or vice versa. Complete removal of the by-produced water by distillation is unnecessary and the commonly encountered side reactions of direct esterification are suppressed since reaction temperatures can be as low as ambient. The expensive acid chlorides or anhydrides combined with acid acceptors, previously used to prepare such co-esters, are circumvented along with the by-produced hydrochlorides or carboxylates which must be recovered and disposed in an environmentally acceptable way. The co-esters formed here are useful in free radical copolymerizations that provide novel film-forming polymers capable of cross-linig when dried in air. They can be formed in bulk, solution or as latexes.
    Type: Grant
    Filed: November 1, 1996
    Date of Patent: May 12, 1998
    Assignee: Michigan Molecular Institute
    Inventor: John C. Saam
  • Patent number: 5747617
    Abstract: An improved method is provided for copolymerizing vinyl chloride with allyl glycidyl ether and a vinyl ester. The copolymers so formed include 70-99 weight percent of vinyl chloride, 0.05-15 weight percent of allyl glycidyl ether, and 0.05-15 weight percent of a vinyl ester, preferably vinyl acetate. The copolymers of this invention can be compounded to provide films exhibiting improved heat stability, low haze, and good adhesion to solid surfaces such as glass and metal. The compounded resins thus obtained may be especially advantageously used in forming the interlayer of laminated safety glazings, such as vehicle windshields and architectural glazings.The copolymerization of vinyl chloride, allyl glycidyl ether, a vinyl ester and small amounts of an unsaturated organic trifunctional silane provide self-adhesion without gelation.
    Type: Grant
    Filed: October 4, 1996
    Date of Patent: May 5, 1998
    Assignee: Libbey-Owens-Ford Co.
    Inventors: Anthony A. Parker, David A. Strickler, Hung S. Park
  • Patent number: 5747552
    Abstract: An acrylic urethane prepolymer composition and an unsaturated polyester resin composition to which the prepolymer has been added. The prepolymer composition includes an acrylic urethane prepolymer prepared by the reaction of diisocyanate, like MDI, with an hydroxyl-containing acrylate monomer, such as a pentaerythritol triacrylate. The prepolymer composition contains a styrene monomer and an inhibitor, such as benzoquinone, to retard the reaction of the prepolymer and styrene monomer prior to the addition of the prepolymer composition into the polyester resin composition and a photoinitiator to promote the polymerization of the resin by exposure to radiant energy. The employment of the urethane prepolymer composition provides for the reduction in the amount of styrene monomer used in the unsaturated resin composition and also provides for improved chemical and physical properties of the photocured, unsaturated resin composition.
    Type: Grant
    Filed: September 12, 1996
    Date of Patent: May 5, 1998
    Assignee: Hehr International Inc.
    Inventor: Stuart B. Smith
  • Patent number: 5747619
    Abstract: Water-soluble copolymerizates are disclosed containing carboxyl groups, and also containing the following components incorporated by polymerization: (a) 30 to 80 mol % monoethylenically unsaturated C.sub.3 -C.sub.8 carboxylic acids, anhydrides thereof and/or water-soluble salts thereof; (b) 10 to 50 mol % C.sub.2 -C.sub.8 olefines, styrene, alkyl styrene, C.sub.1 -C.sub.10 alkyl vinyl ethers and/or vinyl esters of saturated C.sub.1 -C.sub.10 monocarboxylic acids; and (c) 0.01 to 20 mol % vinyl ethers and/or allyl ethers of alkoxylated C.sub.1 -C.sub.30 alcohols. The copolymerizates in question have a K-value of at least 8 (determined after H. Fikentscher). Also disclosed are methods of producing the water-soluble copolymerizates by copolymerization of the monomers in the presence of radical-forming polymerization initiators, and the use of the polymerizates as scale inhibitors.
    Type: Grant
    Filed: February 20, 1996
    Date of Patent: May 5, 1998
    Assignee: BASF Aktiengesellschaft
    Inventors: Walter Denzinger, Heinrich Hartmann, Birgit Potthoff-Karl, Karl-Heinz Buechner, Marc Heider, Hans-Juergen Raubenheimer
  • Patent number: 5747616
    Abstract: Ethylene-based copolymers which are suitable as flow improvers for mineral oil middle distillates are composed ofa) from 50 to 94% by weight of ethylene,b) from 3 to 30% by weight of one or more vinyl esters of C.sub.2 -C.sub.6 -monocarboxylic acids,c) from 3 to 20% by weight of one or more aminoalkyl acrylates of the general formula I ##STR1## where R.sup.1 is hydrogen or methyl, R.sup.2 and R.sup.3 may be identical or different and are each hydrogen or C.sub.1 -C.sub.6 -alkyl and A.sup.1 is straight-chain or branched C.sub.2 -C.sub.10 -alkylene, andd) from 0 to 10% by weight of one or more monomers which are copolymerizable with the monomers a) to c),copolymers in which monomer b) is vinyl acetate and which have a number average molecular weight of from 5000 to 50,000 being excluded, or are composed ofa') from 50 to 95.5% by weight of ethylene,b') from 4 to 30% by weight of one or more vinyl esters of C.sub.2 -C.sub.6 -monocarboxylic acids,c') from 0.
    Type: Grant
    Filed: June 5, 1997
    Date of Patent: May 5, 1998
    Assignee: BASF Aktiengesellschaft
    Inventors: Hans-Joachim Muller, Bernd Wenderoth, Albin Berger, Dieter Littmann, Roger Klimesch, Knut Oppenlander, Bernd Lothar Marczinke, Thomas Ruhl, Marc Heider
  • Patent number: 5744563
    Abstract: A flocculant copolymer of acrylamide and Mannich base of acrylamide is provided which purifies and treats water and/or waste water, and/or sludge, and/or other contaminated liquids resulting from municipal discharges and industrial process effluents, as well as separating suspended and colloidal particles from liquids in industrial manufacturing processes. The copolymer has the general formula: ##STR1## wherein R.sub.1 is hydrogen or C.sub.1-4 alkyl groups, R.sub.2 and R.sub.3 are C.sub.1 to C.sub.8 alkyl groups and may be the same or different.It is prepared in two stage reaction. In the first stage Mannich base of acrylamide is produced by reacting acrylamide with formalin and dimethylamine or other secondary C.sub.1-8 -alkylamines: ##STR2## and in the second stage copolymer of acrylamide and Mannich base of acrylamide is produced by polymerizing in the presence of redox-initiator system. The mole ratio of acrylamide to Mannich base of acrylamide of 1:(0.05-0.
    Type: Grant
    Filed: February 18, 1997
    Date of Patent: April 28, 1998
    Inventor: Tamara V. Vyshkina
  • Patent number: 5744561
    Abstract: The invention relates to the use of fluorinated copolymers based on trifluoroethylene (VF3) and tetrafluoroethylene (C.sub.2 F.sub.4), having melting points above 210.degree. C. and soluble in the customary polar solvents, as protective coatings for a variety of substrates (plates, wires, cables, fibers, etc.) in the form of extruded films or sheaths or in the form of varnishes and paints.
    Type: Grant
    Filed: October 11, 1995
    Date of Patent: April 28, 1998
    Assignee: Elf Atochem S.A.
    Inventor: Patrick Kappler
  • Patent number: 5744543
    Abstract: Described is a single-component adhesive made from a radical-polymerized olefinically unsaturated monomer and an air-activated initiator system and characterized in that the adhesive also contains isocyanate and/or silane groups. This makes a dual curing mechanism possible. The more rapid of the two curing reactions gives specific characteristics in the initial stage, e. g. high initial strength, high adhesive strength or high contact strength. The slower of the two reactions produces the definitive characteristics, e.g. final strength or resistance to heat.
    Type: Grant
    Filed: December 9, 1996
    Date of Patent: April 28, 1998
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Thomas Huver, Herbert Fischer, Wolfgang Klauck, Gerd Bolte
  • Patent number: 5744565
    Abstract: A bead polymerizate P which is prepared by suspension polymerization of monomer and then mechanically comminuted.
    Type: Grant
    Filed: November 18, 1996
    Date of Patent: April 28, 1998
    Assignee: Roehm GmbH Chemische Fabrik
    Inventors: Peter Denkinger, Wilhelm Elser
  • Patent number: 5744418
    Abstract: A redoxcatalyst system capable of being used for free-radical emulsion polymerization of ethylenically unsaturated compounds, comprising at least one oxidizing agent and at least one reducing agent, said reducing agent comprising an at least bifunctional aldehyde having at least 3 carbon atoms which is completely masked as a bisulfite adduct.
    Type: Grant
    Filed: December 4, 1996
    Date of Patent: April 28, 1998
    Assignee: Clariant GmbH
    Inventor: Martin Jakob
  • Patent number: 5744547
    Abstract: A process for producing vinyl acetate polymers comprises, after polymerization of at least one monomer comprising vinyl acetate, adding a conjugated polyene having a boiling point of at least 20.degree. C. Saponified products of the vinyl acetate polymers obtained by this process can give molded articles causing little coloring and generation of gel-like agglomerates.
    Type: Grant
    Filed: June 25, 1996
    Date of Patent: April 28, 1998
    Assignee: Kuraray Co., Ltd.
    Inventors: Takeshi Moritani, Kaoru Ikeda, Akimasa Aoyama, deceased, Takaharu Kawahara, Yukihiro Ohara, Naoshi Nakagawa, Toshinori Tsugaru
  • Patent number: 5744527
    Abstract: There is provided a polyacetal resin composition having excellent in weather and environmental resistances, in which resin degradation/discoloration and bleeding of additives/discoloration are suppressed to the utmost in extended exposure to light and an initial surface condition of a molded product is maintained.Hundred parts by weight of the polyacetal resin (A) are blended with 0.01 to 2.0 parts by weight of the UV absorber (C), 0.01 to 1 part by weight of the low-molecular hindered amine series substance (D-1) having a molecular weight of less than 700 and 0.01 to 4 parts by weight of the high molecular hindered amine series substance (D-2) having a molecular weight of 700 or more. The oxyalkylene polymer (E) may be contained therein.
    Type: Grant
    Filed: September 22, 1994
    Date of Patent: April 28, 1998
    Assignee: Polyplastics Co., Ltd.
    Inventors: Toru Katsumata, Nobuyuki Matsunaga
  • Patent number: 5744562
    Abstract: A copolymer comprising an alkyl acrylate and an. unsaturated ester compound represented by the following general formula:(1) CH.sub.2 .dbd.CRCOO(CH.sub.2)nPhOR',(2) CH.sub.2 .dbd.CRCOO(CH.sub.2)nOCO(CH.sub.2)mPhOR',(3) CH.sub.2 .dbd.CHOCO(CH.sub.2)nOCO(CH.sub.2)mPhOR',(4) CH.sub.2 .dbd.CHO(CH.sub.2)nOCO(CH.sub.2)mPhOR' or(5) CH.sub.2 .dbd.CHPh(CH.sub.2)nOCO(CH.sub.2)mPhOR'where R is a hydrogen atom or a methyl group; R' is a hydrogen atom, an acyl group or a trialkylsilyl group; and Ph is a phenylene group, forms a blend rubber having a good heat resistance and a good amine resistance with a fluorine-containing elastomer.
    Type: Grant
    Filed: July 24, 1996
    Date of Patent: April 28, 1998
    Assignee: Nippon Mektron, Limited
    Inventors: Kuniyoshi Saito, Iwao Moriyama, Jun Okabe