Patents Examined by Kriellion Morgan
  • Polymeric compounds containing piperidine radicals and their use as stabilizers for synthetic polymers
    Patent number: 4769443
    Abstract: Novel light stabilizers, heat stabilizers and oxidation stabilizers for synthetic polymers have been synthesized; these are of the formula: ##STR1## in which R.sub.3 and R.sub.4 can be identical or different and are radicals of formula (III), (IV), (V), (VI) ##STR2## and R.sub.5 additionally can be a radical of formula VII ##STR3## and R.sub.4 is C.sub.2 -C.sub.
    Type: Grant
    Filed: August 3, 1987
    Date of Patent: September 6, 1988
    Assignee: Ciba-Geigy Corporation
    Inventor: Giuseppe Cantatore
  • Flameproof polyamides
    Patent number: 4769444
    Abstract: Flameproof thermoplastic polyamide moulding materials which contain 2 to 20% by weight, based on the polyamide, of at least one non-halogenated cyclic aromatic inside compound.
    Type: Grant
    Filed: May 15, 1987
    Date of Patent: September 6, 1988
    Assignee: Bayer Aktiengesellschaft
    Inventors: Thomas Joswig, Karsten Idel, Friedemann Muller, Heinz-Josef Fullmann
  • Vinyl benzyl 2,2,6,6-tetramethyl piperidines
    Patent number: 4767834
    Abstract: Vinyl benzyl 2,2,6,6-tetramethyl piperidines are provided, having the formula: ##STR1## wherein: R is selected from the group consisting of hydrogen; oxyl; acyl and alkyl having from one to about eighteen carbon atoms; ##STR2## in which Y is --O-- or --N(R.sub.2)--, R.sub.1 is alkyl having from one to about eighteen carbon atoms and R.sub.2 is hydrogen or alkyl having from one to about eighteen carbon atoms.
    Type: Grant
    Filed: March 19, 1987
    Date of Patent: August 30, 1988
    Assignee: Adeka Argus Chemical Co., Ltd.
    Inventors: William E. Leistner, Yutaka Nakahara, Bunji Hirai, Mitsuharu Kanai
  • Thermoplastic moulding compositions having flame-retarding properties
    Patent number: 4766165
    Abstract: The present invention relates to flame-retarding moulding compositions which are based on thermoplastic polycarbonates, copolymers of styrenes and maleic anhydride, phosphorus compounds of the formula (I) ##STR1## tetrafluoroethylene polymers, small amounts of graft polymers and optionally halogen compounds and which in addition can contain stabilizers, pigments, flow agents, release agents and/or antistatics, and to a process for their preparation.
    Type: Grant
    Filed: June 5, 1986
    Date of Patent: August 23, 1988
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Jurgen Kress, Friedemann Muller, Christian Lindner, Horst Peters, Josef Buekers, Gert Todtemann
  • Oligomeric light stabilizers with substituted piperidine ends
    Patent number: 4762872
    Abstract: A poly(.alpha.-aminoacetamide) ("poly(AAMID)" for brevity) main chain having terminal polysubstituted piperidinyl chain ends are novel compounds which have highly desirable UV-light stabilizing (UV-S) activity coupled with unexpectedly good thermal stability. These compounds, referred to as "piperidinyl-chain ended poly(AAMID)s", are oligomers which contain from 2 to about 18 AAMID repeating units, for use in polymer recipes to formulate a stabilized polymeric composition comprising a UV-light-degradable organic polymer containing an effective amount of the poly(AAMID) sufficient to stabilize the polymer. A poly(AAMID) is especially effective in a polyolefin in which there is from about 0.1 percent by weight (% by wt), to about 5% by wt of the oligomer, and is also effective in a wide variety of pastel colored and/or transparent commercially significant polymers.
    Type: Grant
    Filed: July 17, 1987
    Date of Patent: August 9, 1988
    Assignee: The B. F. Goodrich Company
    Inventors: John T. Lai, Pyong Nae-Son
  • Hydrocarbyl(polyphenol)-poly(2,2,6,6-tetramethyl piperidyl-1,3,5-triazines) as stabilizers for synthetic polymer compositions
    Patent number: 4760141
    Abstract: Stabilizers for synthetic polymer compositions are provided which are hydrocarbyl(polyphenol)-poly(2,2,6,6-tetramethyl-piperidyl-1,3,5-triazines ) having the formula: ##STR1## in which R is a hydrocarbyl group having the valence n;R.sub.1 is selected from the group consisting of hydrogen; alkyl, alkenyl, cycloalkyl, hydroxyalkyl and alkoxy having from one to about twelve carbon atoms; acyl having from about one to about twelve carbon atoms; and oxyl;Y is selected from the group consisting of ##STR2## wherein R.sub.4 is lower alkyl having from one to about six carbon atoms; R.sub.5 is selected from the group consisting of hydrogen; alkyl, hydroxy alkyl and alkoxy having from one to about twelve carbon atoms; and cycloalkyl having from three to about twelve carbon atoms; and ##STR3## X is selected from the group consisting of ##STR4## wherein: R.sub.
    Type: Grant
    Filed: September 17, 1987
    Date of Patent: July 26, 1988
    Assignee: Adeka Argus Chemical Co., Ltd.
    Inventors: Yutaka Nakahara, Etsuo Tobita
  • Hydrocarbyl(polyphenol)-poly(2,2,6,6-tetramethyl piperidyl-1,3,5-triazines) as stabilizers for synthetic polymer compositions
    Patent number: 4759871
    Abstract: Stabilizers for synthetic polymer compositions are provided which are hydrocarbyl(polyphenol)-poly(2,2,6,6-tetramethyl-piperidyl-1,3,5-triazines ) having the formula: ##STR1## in which: R is a hydrocarbyl group having the valence n;R.sub.1 is selected from the group consistng of hydrogen; alkyl, alkenyl, cycloalkyl, hydroxyalkyl and alkoxy having from one to about twelve carbon atoms; acyl having from about one to about twelve carbon atoms; and oxyl;Y is selected from the group consisting of ##STR2## wherein R.sub.4 is lower alkyl having from one to about six carbon atoms; R.sub.5 is selected from the group consisting of hydrogen; alkyl, hydroxy alkyl and alkoxy having from one to about twelve carbon atoms; and cycloalkyl having from three to about twelve carbon atoms; and ##STR3## X is selected from the group consisting of ##STR4## wherein: R.sub.
    Type: Grant
    Filed: September 11, 1987
    Date of Patent: July 26, 1988
    Assignee: Adeka Argus Chemical Co., Ltd.
    Inventors: Yutaka Nakahara, Etsuo Tobita
  • Compositions stabilized with substituted amino carbamates
    Patent number: 4758614
    Abstract: Substituted amino carbamate derivatives corresponding to the formula ##STR1## are effective in stabilizing organic materials against oxidative, thermal and actinic degradation, said derivatives being particularly effective as color improvers and process stabilizers in organic materials containing phenolic antioxidants and/or metal salts of fatty acids and/or hindered amine light stabilizers and/or organic phosphorus compounds; and certain of said derivatives as new compounds.
    Type: Grant
    Filed: April 25, 1986
    Date of Patent: July 19, 1988
    Assignee: Ciba-Geigy Corporation
    Inventors: Stephen D. Pastor, Edward T. Hessell, Ramanathan Ravichandran
  • Compositions stabilized with aminoxy alkylamine derivatives
    Patent number: 4757102
    Abstract: Various substituted aminoxy alkylamine derivatives are effective in stabilizing organic materials against oxidative, thermal and actinic degradation, said derivatives being particularly effective as color improvers and process stabilizers in organic materials containing phenolic antioxidants and/or metal salts of fatty acids and/or hindered amine light stabilizers and/or organic phosphorus compounds; and certain of said derivatives as new compounds.
    Type: Grant
    Filed: May 12, 1986
    Date of Patent: July 12, 1988
    Assignee: Ciba-Geigy Corporation
    Inventors: Ramanathan Ravichandran, Stephen D. Pastor, Thomas E. Snead
  • Halogenated phosphate-phosphites and their acid halides and acids
    Patent number: 4755547
    Abstract: Included are halogenated phosphate-phosphites and their acid halides and acids. The halogenated phosphate-phosphites can be prepared by a process comprising serially contacting(A) a phosphorus trihalide with a triol;(B) a halogenating agent; and(C) an oxirane or an alcohol,under conditions sufficient to prepare the halogenated phosphate-phosphite. Steps (A) and (B) can prepare their acid halides. Use of water in step (C) can prepare their acids. For example, 3-((bis(2-chloroethoxy)phosphino)oxy)(2-bromomethyl-2-methylpropyl, 2-bromoethyl, 2-chloroethyl)-phosphorate can be prepared from 2-methyl-2-(hydroxymethyl)-1,3-propanediol; phosphorus trichloride; bromine; and ethylene oxide.Also included is use of the compounds as a hydraulic fluid or flame retardant. For example, polyurethanes can be rendered less flammable with the halogenated phosphate-phosphite flame retardant.
    Type: Grant
    Filed: April 8, 1986
    Date of Patent: July 5, 1988
    Assignee: The Dow Chemical Company
    Inventor: Chester E. Pawloski
  • Stabilized olefin polymers
    Patent number: 4755546
    Abstract: Thermal stabilization of olefin polymers, particularly polypropylene. Stabilization is accomplished by means of an ester of a pentaerythritol monoacetal. The ester contains a phenolic group.
    Type: Grant
    Filed: March 6, 1985
    Date of Patent: July 5, 1988
    Assignee: Borg-Warner Chemicals, Inc.
    Inventors: Ingenuin Hechenbleikner, William P. Enlow
  • Biomaterial implants which resist calcification
    Patent number: 4753652
    Abstract: A biomaterial implant into which is incorporated a sustained release polymer containing an anticalcium agent.
    Type: Grant
    Filed: December 10, 1986
    Date of Patent: June 28, 1988
    Assignee: Children's Medical Center Corporation
    Inventors: Robert Langer, Robert J. Levy
  • Flame-retarding, polycarbonate moulding materials of high impact strength
    Patent number: 4751260
    Abstract: The present invention relates to flame-retarding, thermoplastic polycarbonate moulding materials of high impact strength consisting of halogen-containing polycarbonates, copolymers formed from styrenes and (meth)acrylonitrile, phosphorus compounds of the formula (I) ##STR1## tetrafluoroethylene polymers and small amounts of graft polymers and, if appropriate, effective amounts of stabilizers, pigments, lubricants, mould release agents and/or antistatic agents, and to a process for the preparation thereof.
    Type: Grant
    Filed: April 30, 1986
    Date of Patent: June 14, 1988
    Assignee: Bayer Aktiengesellschaft
    Inventors: Hans-Jurgen Kress, Friedemann Muller, Christian Lindner, Horst Peters, Josef Buekers
  • Iontophoretic drug delivery
    Patent number: 4747819
    Abstract: Improved methods of ionophoretic drug delivery are described. By the intentional selection of drug(s) with specific characteristics, of ionotophoresis device, components or both permits the efficiency of drug delivery is increased.
    Type: Grant
    Filed: October 29, 1984
    Date of Patent: May 31, 1988
    Assignee: Medtronic, Inc.
    Inventors: Joseph B. Phipps, Darrel F. Untereker
  • Iontophoresis apparatus and methods of producing same
    Patent number: 4744787
    Abstract: Improved iontophoresis drug delivery apparatus or device wherein one or more electrochemically active components are employed or "sacrificed" so as to minimize the hydrolysis of water during drug delivery. Efficiency of drug delivery is increased and pH changes in the device or adjacent the patient's skin are minimized.
    Type: Grant
    Filed: October 29, 1984
    Date of Patent: May 17, 1988
    Assignee: Medtronic, Inc.
    Inventors: Joseph B. Phipps, Darrel F. Untereker
  • 1-oxa-3-oxo-4,8-diaza-spiro(4,5)decane compounds
    Patent number: 4745192
    Abstract: 1-Oxa-3-oxo-4,8-diaza-spiro[4,5]decane compounds of the formula ##STR1## are novel light stabilizers for protecting polymers from the damaging effect of UV radiation.
    Type: Grant
    Filed: July 8, 1986
    Date of Patent: May 17, 1988
    Assignee: Hoechst Aktiengesellschaft
    Inventor: Josef Ertl
  • Flame retardant compounds and thermoplastic compositions containing the same
    Patent number: 4743637
    Abstract: Novel flame retardant agents comprise polyalkylene oxides or a derivative thereof end-capped with brominated phthalimide groups, and have the general formulaeR--R.sup.1 --O--R.sup.1).sub.n R (I)(R--R.sup.1 --O--R.sup.1).sub.n' NH).sub.2 C.dbd.O (II)orR--R.sup.1 --OR.sup.1).sub.n" CH.sub.2).sub.3 C--R.sup.2 (III)wherein R is ##STR1## R.sup.1 is alkylene of from about 2 to about 6 carbon atoms; R.sup.1 is alkyl of from about 1 to about 6 carbon atoms; n is from about 4 to about 40; n' is from about 3 to about 15; and n" is from about 1 to about 10. Thermoplastic compositions, for example, polyphenylene ether compositions, rendered flame retardant with the novel compounds have a high resistance to additive vaporization and surface liquid exudation as well as desirable high flow characteristics.
    Type: Grant
    Filed: August 1, 1986
    Date of Patent: May 10, 1988
    Assignee: General Electric Company
    Inventors: Robert J. Axelrod, Donald B. G. Jaquiss, John A. Tyrell
  • Hydrocarbyl(polyphenol)-poly(2,2,6,6-tetramethyl piperidyl-1,3,5-triazines) as stabilizers for synthetic polymer compositions
    Patent number: 4740544
    Abstract: Stabilizers for synthetic polymer compositions are provided which are hydrocarbyl(polyphenol)-poly(2,2,6,6-tetramethyl-piperidyl-1,3,5-triazines ) having the formula: ##STR1## in which: R is a hydrocarbyl group having the valence n;R.sub.1 is selected from the group consisting of hydrogen; alkyl, alkenyl, cycloalkyl, hydroxyalkyl and alkoxy having from one to about twelve carbon atoms; acyl having from about one to about twelve carbon atoms; and oxyl;Y is selected from the group consisting of ##STR2## wherein R.sub.4 is lower alkyl having from one to about six carbon atoms; R.sub.5 is selected from the group consisting of hydrogen; alkyl, hydroxy alkyl and alkoxy having from one to about twelve carbon atoms; and cycloalkyl having from three to about twelve carbon atoms; and ##STR3## X is selected from the group consisting of ##STR4## wherein: R.sub.
    Type: Grant
    Filed: July 10, 1986
    Date of Patent: April 26, 1988
    Assignee: Adeka Argus Chemical Co., Ltd.
    Inventors: Yutaka Nakahara, Etsuo Tobita
  • Synergistic mixtures of nickel-containing 2,2'-thiobis(alkylphenols) and 2-hydroxy-4-alkoxybenzophenones
    Patent number: 4734449
    Abstract: Stabilizer systems containing at least two Ni-containing light-stabilizers in which nickel (which, in class 2, optionally contains an additional ligand) forms a complex compound with a compound selected from the group consisting of the classes:1. 2-hydroxy-4-alkoxybenzophenones2. 2,2'-thiobis[4-alkylphenols]3. 3,5-dialkyl-4-hydroxybenzoic acid monoalkyl esters4. 3,5-dialkyl-4-hydroxybenzylphosphonic acid monoalkyl esters5. 1-phenyl-3-methyl-4-acyl-5-hydroxypyrazole,in which the radicals generally contained are appropriately substituted. After being incorporated into the corresponding polyolefins, these stabilizer systems have a synergistic effect which prevents or at least greatly retards decomposition initiated by light and/or oxygen.
    Type: Grant
    Filed: August 7, 1986
    Date of Patent: March 29, 1988
    Assignee: Ciba-Geigy Corporation
    Inventor: Francois Gugumus
  • Thermal stabilization of acetal polymers
    Patent number: 4731396
    Abstract: Stabilized acetal polymer molding compositions are formed by first preparing an intimate dispersion of an amidine stabilizer in a carrier resin comprising an ionic polymer, i.e. an "ionomer", and compounding the dispersion with the acetal polymer. The resulting composition is found in many cases to have improved stability over compositions prepared by adding the amidine compound in an undispersed form.
    Type: Grant
    Filed: January 15, 1986
    Date of Patent: March 15, 1988
    Assignee: Celanese Corporation
    Inventors: Andrew B. Auerbach, Thomas C. Yu