Patents Assigned to M & T Chemicals Inc.
  • Tris(aryl)alkyl phosphonium halides and pesticidal compositions thereof
    Patent number: 4264593
    Abstract: Tri(phenyl)alkyl phosphonium halides wherein the phenyl groups contain a long chain or sterically hindered alkyl group are novel and exhibit efficacious levels of fungicidal and bacteriocidal activity. The presence of the alkyl substituent eliminates or significantly reduces the phytotoxicity that characterizes the corresponding unsubstituted phosphonium compounds.
    Type: Grant
    Filed: October 31, 1979
    Date of Patent: April 28, 1981
    Assignee: M&T Chemicals, Inc.
    Inventor: Edwin L. Sukman
  • Antifoulant composition and method
    Patent number: 4260535
    Abstract: The durability of coatings formed from antifouling compositions containing a biologically active organotin-containing polymer as the film-forming component is improved by the presence of at least one biologically inactive organotin-containing polymer in an amount of from 0.01 to 10% based on the weight of the initial coating composition.
    Type: Grant
    Filed: September 4, 1979
    Date of Patent: April 7, 1981
    Assignee: M&T Chemicals Inc.
    Inventor: David B. Russell
  • Organotin mercaptoalkanol esters and alkoxides containing sulfide groups
    Patent number: 4254017
    Abstract: This invention relates to novel organotin compounds containing at least one sulfur atom that is bonded exclusively to tin or to tin and hydrogen. The compounds are derivatives of mercaptoalkanols, which are present as the free alcohols, as esters of polycarboxylic acids, esters of acids containing specified non-metallic elements or as alkoxides of specified metallic elements. The compounds are effective catalysts for a variety of reactions and impart heat stability to halogen-containing resins.
    Type: Grant
    Filed: November 13, 1978
    Date of Patent: March 3, 1981
    Assignee: M&T Chemicals Inc.
    Inventors: Robert D. Dworkin, William A. Larkin
  • Synergistic heat stabilizer compositions containing an antimony or a bismuth compound
    Patent number: 4231895
    Abstract: The combination of a conventional antimony--or bismuth-containing heat stabilizers with certain aromatic esters or aryloxides containing boron, phosphorus, silicon, antimony, tin or zinc interacts synergistically to provide an unexpectedly high level of heat stability to halogen-containing polymers such as polyvinyl chloride (PVC). In addition the aromatic ester or aryloxide inhibits spontaneous degradation of the heat stabilizing component in the presence of heat and/or light.
    Type: Grant
    Filed: January 2, 1979
    Date of Patent: November 4, 1980
    Assignee: M & T Chemicals Inc.
    Inventor: Robert D. Dworkin
  • Simultaneous fungicidal and miticidal protection of plants employing certain tin compounds
    Patent number: 4224338
    Abstract: Method of protecting plants from both fungal organisms and mites in the same treatment in which there is applied to the plant an amount of one or more of selected tricyclopentyl tin and tris(cyclopentylmethyl)tin compounds, which amount is sufficient to provide both antifungal and miticidal protection but is less than a substantially harmful phytotoxic amount. Counter ions in these compounds which are suitable include hydroxy, halo, oxo, thioxo, alkyl- and aryl carboxylate, thiocyanato, diloweralkyldithiocarbamoyl and diethoxyphosphinothioylthio.
    Type: Grant
    Filed: August 17, 1976
    Date of Patent: September 23, 1980
    Assignees: The Dow Chemical Company, M&T Chemicals Inc.
    Inventors: Ronald J. Sbragia, John L. Hardy, John E. Engelhart, Melvin H. Gitlitz, Robert J. Ehr
  • Blowing catalyst composition for low density flexible polyurethane foams
    Patent number: 4223098
    Abstract: Low density flexible polyurethane foams can be prepared using water and relatively large amounts of methylene chloride as the foaming agents in the presence of an organic or inorganic tin compound as the gel catalyst and a foaming catalyst consisting essentially of catalytically effective amounts of an antimony carboxylate, a potassium carboxylate and a zinc carboxylate.
    Type: Grant
    Filed: October 30, 1978
    Date of Patent: September 16, 1980
    Assignee: M&T Chemicals Inc.
    Inventor: Kenneth Treadwell
  • Method for preparing triorganotin halide
    Patent number: 4222950
    Abstract: Triorganotin compounds of the general formula ##STR1## are efficacious insecticides when applieds to objects, particularly plants, that are susceptible to infestation by insects. In the foregoing formula R.sup.1 and R.sup.2 are individually selected from the group consisting of linear and branched-chain alkyl containing from 1 to 4 carbon atoms with the proviso that the total number of carbon atoms in R.sup.1 and R.sup.2 is from 5 to 7, Y is selected from the group consisting of chlorine, bromine, fluorine, hydroxyl, cyanide, carbamate, thiocarbamate, dithiocarbamate, nitrate, phenoxy, enolate, ##STR2## SR.sup.3, OR.sup.4, oxygen, sulfur, sulfate and phosphate, wherein R.sup.3 represents alkyl containing from 1 to 12 carbon atoms or phenyl, R.sup.4 is alkyl containing from 1 to 12 carbon atoms, a represents the valence of Y and is the integer 1, 2 or 3 and n represents an integer from 1 to 6, inclusive.
    Type: Grant
    Filed: August 10, 1978
    Date of Patent: September 16, 1980
    Assignee: M&T Chemicals Inc.
    Inventor: Melvin H. Gitlitz
  • Method for protecting surfaces against fouling by marine organisms
    Patent number: 4221839
    Abstract: A method for protecting surfaces of objects or constructions that are exposed to surface-water against growth of biological origin by applying an antifouling coating layer onto these surfaces, which coating layer is formed from a paint formulation composing (a) one or more water-insoluble polymeric binders, (b) one or more water-soluble polymeric binders, (c) one or more sparingly water-soluble toxicants, optionally completed with other conventional materials, whereby the proportion of the components (a), (b) and (c) is such that the resulting coating layer when exposed to the surface water, wears off at such a rate that just sufficient toxicant is liberated to prevent fouling of the protected subject.
    Type: Grant
    Filed: March 23, 1978
    Date of Patent: September 9, 1980
    Assignee: M&T Chemicals Inc.
    Inventor: Aart P. de Graaf
  • Insecticidal compositions containing certain tetraorganotin compounds and method for using same
    Patent number: 4212885
    Abstract: Many varieties of harmful insects which attack useful plant crops can be controlled by treating the plants with compositions containing at least one tetraorganotin compound wherein three of the four hydrocarbon groups bonded to the tin atom are methyl and the remaining group is substituted aromatic or heterocyclic that is either bonded directly to the tin atom or separated from the tin atom by one methylene group. These compounds exhibit unexpectedly superior insecticidal activity relative to organotin compounds containing three methyl groups and a phenyl or an alkyl-substituted phenyl group.
    Type: Grant
    Filed: December 6, 1978
    Date of Patent: July 15, 1980
    Assignee: M&T Chemicals Inc.
    Inventors: Melvin H. Gitlitz, John E. Engelhart, Carlos M. Mery
  • Novel trimethyltetraorganotin compounds
    Patent number: 4212810
    Abstract: Many varieties of harmful insects which attack useful plant crops can be controlled by treating the plants with compositions containing certain novel tetraorganotin compounds wherein three of the four hydrocarbon groups bonded to the tin atom are methyl and the remaining group is phenyl containing specified substituents or heterocyclic and is either bonded directly to the tin atom or separated from the tin atom by one methylene group. The present compounds exhibit unexpectedly superior insecticidal activity relative to prior art organotin compounds containing three methyl groups and a phenyl or an alkyl- substituted phenyl group bonded to the tin atom.
    Type: Grant
    Filed: December 21, 1978
    Date of Patent: July 15, 1980
    Assignee: M&T Chemicals Inc.
    Inventors: Melvin H. Gitlitz, John E. Engelhart, David A. Russo
  • Novel low concentration decorative chromium plating baths and method
    Patent number: 4206019
    Abstract: A bright decorative plating process for electroplating chromium on a basis metal, characterized by high coverage and throwing power, utilizes a chromic acid plating bath containing the anion of an organic carboxylic acid or a halogenated organic carboxylic acid. The baths are of unprecedentedly high CrO.sub.3 to sulfate ratio, 600-3000:1. They may be of the self-regulating type. They contain a fluoride or complex fluoride as an auxiliary catalyst. The carboxylic acid anion may be added by introducing into the bath the acid itself, or a soluble salt of the acid, or the acid anhydride. The anions of the aliphatic dicarboxylic acids such as adipic acid and succinic acid anhydride are preferred. The concentration of the carboxylic acid anion is preferably from 0.5 to 32 grams per liter.
    Type: Grant
    Filed: April 7, 1978
    Date of Patent: June 3, 1980
    Assignee: M&T Chemicals Inc.
    Inventor: Hyman Chessin
  • Lubricant composition for halogen-containing polymers
    Patent number: 4203880
    Abstract: The processability and melt strength of halogen-containing polymers derived at least in part from vinyl chloride or vinylidene chloride are significantly improved using a conventional external lubricant in combination with an oxidized ethylene polymer exhibiting a melt viscosity of from 1,000 to about 60,000 centipoises at 140.degree. C. and an acid number of at least 5.
    Type: Grant
    Filed: November 13, 1978
    Date of Patent: May 20, 1980
    Assignee: M&T Chemicals Inc.
    Inventors: Alfred Stoloff, Anthony L. Williams
  • Catalyst composition for rigid polyurethane foams
    Patent number: 4200699
    Abstract: The rate of the reaction between a polyol and a polyfunctional isocyanate to form a rigid polyurethane foam can be controlled within a wide range, using as the catalyst for said reaction a mixture comprising catalytically effective amounts of an antimony carboxylate, a potassium carboxylate and a zinc carboxylate. The mixture can be used alone or in combination with tertiary amines or tin compounds, both of which are conventionally employed as catalysts for the polyol-isocyanate reaction.
    Type: Grant
    Filed: October 12, 1978
    Date of Patent: April 29, 1980
    Assignee: M&T Chemicals Inc.
    Inventor: Kenneth Treadwell
  • Novel composition for preparing urethane/urea block copolymers
    Patent number: 4195150
    Abstract: The reaction between an isocyanate-terminated prepolymer and an aromatic diamine to form an elastomeric urethane-urea copolymer is accelerated using a quaternary ammonium compound as the catalyst. The quaternary ammonium compound is optionally employed in combination with a mono- or polyfunctional carboxylic acid containing from 4 to 20 carbon atoms.
    Type: Grant
    Filed: October 13, 1978
    Date of Patent: March 25, 1980
    Assignee: M & T Chemicals Inc.
    Inventors: Vincent J. Gajewski, Elliot Eisenbach
  • Stable dispersions containing trialkyltin fluorides
    Patent number: 4191580
    Abstract: The tendency of dispersions containing trialkyltin fluorides in organic liquids to agglomerate is avoided by using as the dispersion medium specified organic liquids in combination with from 0.5 to 10%, based on the weight of the dispersion, of specified inorganic compounds. The choice of both organic liquid and inorganic compounds is critical to achieving long-term stability of the resultant dispersion.
    Type: Grant
    Filed: February 1, 1978
    Date of Patent: March 4, 1980
    Assignee: M&T Chemicals Inc.
    Inventors: Charles B. Beiter, Leroy A. Hafner
  • Method for preparing organotin compounds
    Patent number: 4187239
    Abstract: Organotin derivatives of mercaptoalcohol esters that correspond to the general formula ##STR1## wherein R and R' are hydrocarbon and m is 2 or 3, are prepared by sequentially reacting a monoorganotin trihalide with stoichiometric amounts of a base, a mercaptoalcohol, an alkali metal sulfide or disulfide and a carboxylic acid or an ester thereof. The present method offers advantages over the prior art, which teaches reacting an esterified mercaptoalcohol with an organotin halide, oxide or organostannoic acid. Compounds wherein R' is n-heptyl are unique in that they do not exhibit the disagreeable odor that characterizes this class of compounds.
    Type: Grant
    Filed: July 20, 1978
    Date of Patent: February 5, 1980
    Assignee: M&T Chemicals Inc.
    Inventor: Robert D. Dworkin
  • Novel trifunctional aromatic amines
    Patent number: 4187250
    Abstract: This invention pertains to novel aromatic, sulfur-containing triamines of the general formula ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 are each alkyl containing from 1 to 3 carbon atoms and Y is ##STR2## The present compounds are useful crosslinking agents that significantly decrease the curing time of elastomeric urethane/urea copolymers.
    Type: Grant
    Filed: June 5, 1978
    Date of Patent: February 5, 1980
    Assignee: M&T Chemicals Inc.
    Inventor: Gabriel Karoly
  • Jet printing ink composition containing an ethylene oxide adduct of acetylenic diol
    Patent number: 4184881
    Abstract: An ink composition for use in jet printing comprising an aqueous solution of a water-soluble dye and a humectant consisting of ethylene oxide adducts of at least one acetylenic diol in the absence of any glycol or glycol ether.
    Type: Grant
    Filed: June 12, 1978
    Date of Patent: January 22, 1980
    Assignee: M&T Chemicals Inc.
    Inventor: Edward T. Bradley
  • Organotin stabilizer composition
    Patent number: 4183846
    Abstract: In accordance with certain of its aspects, this invention relates to stabilizing compositions; to stabilized polymers; and to the process for preparing a novel halogen-containing polymer stabilized against the deteriorative effect of heat which comprises adding to a halogen-containing resin a stabilizing amount of: a first stabilizer having the formula RSn(SR').sub.3 wherein R is selected from the group consisting of methyl, butyl and octyl radicals and R' is a residue of a carboxylic acid ester derived from acetic or propionic acid and a monohydric alcohol containing between 8 and 12 carbon atoms or a dodecyl hydrocarbon radical; and a second stabilizer of the formula R".sub.2 Sn.dbd.S wherein R" represents a monovalent hydrocarbon radical selected from the group consisting of methyl and butyl radicals.
    Type: Grant
    Filed: May 10, 1971
    Date of Patent: January 15, 1980
    Assignee: M&T Chemicals Inc.
    Inventors: William A. Larkin, Robert C. Ringwood, Jr.
  • Silicone containing bis-thioether aromatic amines
    Patent number: RE30677
    Abstract: A silicone containing bis-thioether aromatic amine has a chemical structure wherein an aromatic nucleus at each end of the chemical radical is chemically bonded to the remainder of the chemical radical by either sulfur, sulfoxide or sulfone.
    Type: Grant
    Filed: April 4, 1980
    Date of Patent: July 14, 1981
    Assignee: M&T Chemicals Inc.
    Inventor: Abe Berger