Patents Represented by Attorney Thomas C. Doyle

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  • Triazinylaminobenzaldehydes
    Patent number: 4754032
    Abstract: Compounds of formula I ##STR1## can be used as optical brighteners.
    Type: Grant
    Filed: February 26, 1986
    Date of Patent: June 28, 1988
    Assignee: Sandoz Ltd.
    Inventors: David L. Connell, John M. Farrar, Jurg Heller, Hans-Rudolf Schmid
  • Dyeing of mixed-fiber substrates with a disperse dye and a metal-complex direct or reactive dye
    Patent number: 4752299
    Abstract: A process for dyeing a mixed fibrous substrate comprising applying to the substrate at least one disperse dye and at least one metal containing direct and/or reactive dye in the presence of a complexing agent having a stability constant K value with the metal of the direct or reactive dye of from 6 to 17 inclusive.
    Type: Grant
    Filed: October 23, 1986
    Date of Patent: June 21, 1988
    Assignee: Sandoz Ltd.
    Inventors: Oskar Annen, John A. Hook
  • Method to due cotton and other substrates with a micro-organism biomass containing indigo
    Patent number: 4752301
    Abstract: A biomass containing biologically produced indigo or a derivative thereof which is used for dyeing without isolating the indigo dye from the rest of the solid biomass before dyeing. Cotton dyeings of clean pure shade can be obtained by a vat dyeing procedure which have the usual fastness properties associated with the active substance.
    Type: Grant
    Filed: June 23, 1987
    Date of Patent: June 21, 1988
    Assignee: Sandoz Ltd.
    Inventor: Werner Koch
  • Water-dispersible quaternized aminoamide-modified waxes useful as textile finishing agents
    Patent number: 4743660
    Abstract: A quaternized aminoamide-modified wax obtainable by amidating, with a polyamine containing a single primary amino group, a carboxy group-containing, oxidized hydrocarbon wax which may be partially saponified, and quaternizing at least one amino group of the resulting aminoamide-modified wax, optionally in admixture with a non-oxidized paraffin wax may be applied, preferably in the form of an aqueous dispersion containing a dispersing agent, to a fibrous substrate to improve its workability in mechanical processes.
    Type: Grant
    Filed: July 10, 1986
    Date of Patent: May 10, 1988
    Assignee: Sandoz Ltd.
    Inventors: Bernard Danner, Eckart Schleusener
  • Fatting compositions containing surface-active phosphoric acid partial esters
    Patent number: 4740210
    Abstract: Process for the fatting and hydrophobizing of tanned leather and pelts, wherein the tanned leather or pelt is fatted with an aqueous dispersion containing a natural optionally chemically modified leather fatting agent and a surface-active phosphoric acid partial ester and optionally a non-ionic and/or an anionic carboxy group and/or sulfo group containing surfactant and subsequently treating the fatted leather or pelt in aqueous medium with a polyvalent metal cation; the treated substrates and the dispersions suitable for carrying out the process.
    Type: Grant
    Filed: February 21, 1985
    Date of Patent: April 26, 1988
    Assignee: Sandoz Ltd.
    Inventors: Werner Amati, Markus Badertscher
  • 2,2,6,6-tetraalkyl-piperidine compounds useful as light stabilizers
    Patent number: 4730017
    Abstract: A compound useful as a light-stabilizer for polymeric material of formula I ##STR1## in which R is hydrogen, oxygen, C.sub.1-8 alkyl or --CO--R.sub.5, where R.sub.5 is --C(R.sub.10).dbd.CH.sub.2, C.sub.1-6 alkyl, phenyl, --CO--O--C.sub.1-4 alkyl or --NR.sub.7 R.sub.8 and where R.sub.7 is hydrogen, C.sub.1-12 alkyl, C.sub.5-6 -cycloalkyl, phenyl, phenylC.sub.1-4 alkyl or C.sub.1-12 alkylphenyl and R.sub.8 is C.sub.1-12 alkyl or hydrogen;each R.sub.1, independently, is --CH.sub.3 or --CH.sub.2 (C.sub.1-4 alkyl) or both groups R.sub.1 form a group --(CH.sub.2).sub.5 --;each R.sub.2, independently, is --CH.sub.3 or --CH.sub.2 (C.sub.1-4 alkyl) or both groups R.sub.2 form a group --(CH.sub.2).sub.5);R.sub.10 is hydrogen or C.sub.1-4 alkyl; andR.sub.4 is an amide- or ester-forming group.
    Type: Grant
    Filed: September 12, 1986
    Date of Patent: March 8, 1988
    Assignee: Sandoz Ltd.
    Inventor: Lajos Avar
  • 1-amino-4-(3'-phenylsulphonyl-aminophenylamino) anthraquinone-2-sulphonic acids useful as anionic dyestuffs
    Patent number: 4728464
    Abstract: Compounds of formula I ##STR1## in which R is hydrogen, methyl or ethyl, R.sub.1 is methyl, ethyl, C.sub.1-4 alkoxy or halogenR.sub.2 is hydrogen, methyl or ethylR.sub.3 is hydrogen, methyl or ethylM is hydrogen or one equivalent of a cation andring A may be unsubstituted or substituted by up to three substituents selected from C.sub.1-4 alkyl, C.sub.1-4 alkoxy, halogen and C.sub.2-4 acylaminoare useful anionic dyestuffs having superior alkali resistance for the dyeing and printing of natural and synthetic polyamides, especially nylon.
    Type: Grant
    Filed: April 18, 1983
    Date of Patent: March 1, 1988
    Assignee: Sandoz Ltd.
    Inventor: Roland Mislin
  • Treatment of textile materials to improve the fastness of dyeings made thereon and polymers useful therefor
    Patent number: 4718918
    Abstract: Polymeric compounds (A) obtained by the reaction of epihalo-hydrin with a polyalkylene polyamine are useful as textile treatment agents. As pretreatment agents they improve the color yield of the subsequent dyeing, as aftertreatment agents they improve fastness properties. Certain of the products (A) are novel.
    Type: Grant
    Filed: June 16, 1986
    Date of Patent: January 12, 1988
    Assignee: Sandoz Ltd.
    Inventors: Jurg Heller, Bruno Kissling, Tibor Robinson, Salvatore Valenti
  • Method for dyeing leather with water-soluble sulpho group-containing sulphur dyes
    Patent number: 4717390
    Abstract: Tanned leather is penetration-dyed from aqueous medium with hydrospluble sulpho group-containing sulphur dyes in the presence of dye-substantive uptake assistants and may be used as a substrate for further coloration processes, mainly dyeings and printings, in particular with anionic or basic dyes; in a variation of the process for overdyeing, in particular of thin leathers, the penetration-dyeing may also be carried out in the absence of the dye-substantive uptake assistant.
    Type: Grant
    Filed: January 30, 1986
    Date of Patent: January 5, 1988
    Assignee: Sandoz Ltd.
    Inventor: Michel Dien
  • Aqueous optical brightener compositions
    Patent number: 4717502
    Abstract: Aqueous optical brightener compositions consisting essentially of:(a) at least one optical brightener of formula ##STR1## in which R.sub.1 is hydrogen or --SO.sub.3 M;R.sub.2 is hydrogen or --SO.sub.3 M;R.sub.3 is hydrogen, C.sub.2-3 -hydroxyalkyl, C.sub.1-4 -alkyl, --CH.sub.2 --CH.sub.2 --CN or --CH.sub.2 --CH.sub.2 --CONH.sub.2 ;R.sub.4 is hydrogen, C.sub.1-4 -alkyl, C.sub.2-3 -hydroxyalkyl, hydroxy-ethoxy-ethyl, N,N-Bis-(C.sub.1-3 -alkyl)-amino-C.sub.2-6 -alkyl or benzyl;orR.sub.3 and R.sub.4 together with the neighboring nitrogen atom signify a morpholine, pyrrolidine, piperidine or N-methylpiperazine ring;andM is hydrogen or a colorless cation; provided that at most one of R.sub.3 and R.sub.
    Type: Grant
    Filed: January 21, 1986
    Date of Patent: January 5, 1988
    Assignee: Sandoz Ltd.
    Inventor: Hans-Rudolf Schmid
  • Hair-reserving dyeing of wool- and fur-bearing skins
    Patent number: 4717389
    Abstract: A hair-reserving penetration dyeing of the leather side of wool- or fur-bearing skins is obtained by dyeing the wooled or fur skins in aqueous medium with hydrosoluble sulpho-group-containing sulphur dyes (a) in the presence of dye-substantive uptake assistant (b) and of non-ionic and/or anionic hydrophilic dispersants (c) and optionally in the presence of leather fatting agents (d).
    Type: Grant
    Filed: May 30, 1986
    Date of Patent: January 5, 1988
    Assignee: Sandoz Ltd.
    Inventor: Rudolf Seitz
  • Stabilizing polymers
    Patent number: 4716187
    Abstract: both R.sub.1 's and CH.sub.3 or together form --CH.sub.2).sub.5 ;both R.sub.2 's are CH.sub.3 or together form --CH.sub.2).sub.5 ;R.sub.3 has a significance of R, independently of R, except for oxygen;X is --O--, --NH-- or ##STR2## m is an integer from 1 to 4 inclusive; R.sub.4 is a saturated or unsaturated aliphatic group unsubstituted or substituted by one or two groups selected from --OH and C.sub.1-4 alkoxy and which can be interrupted by an oxygen or sulphur atom; or an aromatic group unsubstituted or substituted by one or two groups selected from --OH, C.sub.1-4 alkyl and C.sub.1-4 alkoxy are useful as U.V. light stabilizers in polymeric organic compounds.
    Type: Grant
    Filed: March 15, 1985
    Date of Patent: December 29, 1987
    Assignee: Sandoz Ltd.
    Inventor: Lajos Avar
  • Hydrophilic cationic copolymers of acrylamide or methacrylamide
    Patent number: 4696962
    Abstract: A cationic polymer composition suitable for use as a flocculating agent and as a retention aid and dewatering agent in paper making consists of a mixture of(a) a hydrophilic cationic polymer of(a.sub.1) acrylamide and/or methacrylamide and(a.sub.2) dialkylamino-C.sub.2-3 alkylene-(meth)acrylamidethe molar quantity of cationic monomer units (a.sub.2) being from 0.2 to 9 mol % of the total(b) an anionic surfactant(c) a water-immiscible oil in which the polymer (a) is insoluble, andoptionally (d) a lipophilic non-ionic surfactant,optionally (e) waterand optionally (f) an oil-miscible polar solvent.The compositions may be prepared by water-in-oil emulsion copolymerization and are readily diluted with water.
    Type: Grant
    Filed: July 24, 1984
    Date of Patent: September 29, 1987
    Assignee: Sandoz Ltd.
    Inventors: Bernard Danner, James R. Ruynon
  • Tetraalkylpiperidines
    Patent number: 4695600
    Abstract: These compounds are useful as light stabilizers in polymeric systems. ##STR1## in which R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are organic radicals.
    Type: Grant
    Filed: June 17, 1986
    Date of Patent: September 22, 1987
    Assignee: Sandoz Ltd.
    Inventor: Lajos Avar
  • Inhibiting polymerization of ethylenically unsaturated monomers
    Patent number: 4692544
    Abstract: Certain substituted diaryl amines are used to inhibit the polymerization of ethylenically unsaturated monomers; for example, unsaturated carboxylic acids and derivatives thereof.
    Type: Grant
    Filed: August 23, 1985
    Date of Patent: September 8, 1987
    Assignee: Sandoz Ltd.
    Inventors: Richard N. Goerner, J. Michael Hipp, Ruth H. Hipp
  • Aqueous wax dispersions useful as textile finishing agents
    Patent number: 4675022
    Abstract: Textile substrates are impregnated with a aqueous disperison of a fine crystalline wax containing carboxy and carboxylic acid ester groups, a paraffin wax and a non-ionic emulsifier, optionally together with an optical brightener and/or a resin finish, and then submitted to a heat treatment. The treated textile substrates have improved sewability.
    Type: Grant
    Filed: June 5, 1985
    Date of Patent: June 23, 1987
    Assignee: Sandoz Ltd.
    Inventor: Bernard Danner
  • Fluid loss control additives for oil-based well-working fluids
    Patent number: 4671883
    Abstract: Fluid loss control additives for oil-based well-working fluids comprise a solubilized lignite derivative and an oil-swellable or oil-soluble polymer. The solubilized lignite derivative may be oil-solubilized (e.g. a lignite/amine complex) or water-solubilized (e.g. causticized lignite) and may be incorporated in a polymer matrix or added to a dispersion of a polymer in an aqueous medium.
    Type: Grant
    Filed: July 12, 1985
    Date of Patent: June 9, 1987
    Assignee: Sandoz Ltd.
    Inventors: David L. Connell, Anthony J. Gradwell
  • Method of reducing chromium levels in effluent chromate aftertreatment of wool dyeings
    Patent number: 4670017
    Abstract: A process for chrome aftertreatment comprising contacting the material to be chrome treated with a chromate in the presence of a composition comprising either(A.sub.1) a product of reacting a mono- or poly-functional primary or secondary amine with cyanamide, dicyandiamide, guanidine or biguanidine, whereby up to 50 mole % of the cyanamide, dicyandiamide guanidine or biguanidine may be replaced with a dicarboxylic acid or mono- or di-esters thereof, the product containing reactive hydrogen bound to nitrogen; or(A.sub.2) the product of reacting A.sub.1 above with an N-methylol derivative of a urea, melamine, guanamine, triazinone, urone, carbamate or acid amide optionally in the presence of a catalyst for the crosslinking of N-methylol compounds of the type above; or(A.sub.3) the product of A.sub.1 above with epihalohydrin or a precursor thereof; and(B) a reducing carbohydrate.
    Type: Grant
    Filed: September 17, 1985
    Date of Patent: June 2, 1987
    Assignee: Sandoz Ltd.
    Inventor: Arthur C. Welham
  • Phthalocyanine basic dyestuffs
    Patent number: 4665165
    Abstract: A compound or a mixture of compounds of formula I ##STR1## in which Pc is a phthalocyanine group (which may be metallized or metal-free);R.sub.1 is hydrogen or lower alkyl;Q and Q.sub.1 are both either --NR.sub.2 R.sub.3 or are both --N.sup..sym. R.sub.4 R.sub.5 R.sub.6 A.sub.n.sup..crclbar. where R.sub.2 to R.sub.6 are organic substituents.M is hydrogen or a cation;A is a lower alkylene or a lower alkenylene;A.sub.n.sup..crclbar. is a non-chromophoric anion;m and n are average numbers from 0.3 to 4;p is an average number from 0 to 1;with the provisos that(i) m+n is an average number from 2 to 6; and(ii) Q and Q.sub.1 are not the same group.
    Type: Grant
    Filed: May 7, 1986
    Date of Patent: May 12, 1987
    Assignee: Sandoz Ltd.
    Inventor: Roland Wald
  • Method for producing xanthone and thioxanthone compounds useful as photoinitiators
    Patent number: 4661595
    Abstract: A method for preparing a compound of formula I ##STR1## in which X is O or S;both groups R together with the two carbon atoms to which they are attached form a fused aromatic group;R.sub.1 is an organic radical; andn is 0, 1, 2 or 3comprising reacting a compound of formula II ##STR2## where R, R.sub.1 and n are defined above and where each R.sub.3, independently, is C.sub.1-12 alkoxy or one R.sub.3 is C.sub.1-12 alkoxy and the other R.sub.3 is halogen,with elemental sulphur in an alkaline medium, a metal sulphide or a metal hydrosulphide.Compounds of formula I and formula II are useful as photoinitiators.
    Type: Grant
    Filed: July 10, 1985
    Date of Patent: April 28, 1987
    Assignee: Sandoz Ltd.
    Inventor: Lajos Avar