Patents by Inventor Joseph Anthony Stretanski

Joseph Anthony Stretanski has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Polymers stabilized by esters of phosphinodithioic acids
    Patent number: 4064106
    Abstract: This invention relates to polymer compositions containing light stabilizing amounts of an ester of a phosphinodithioic acid.
    Type: Grant
    Filed: November 25, 1975
    Date of Patent: December 20, 1977
    Assignee: American Cyanamid Company
    Inventors: Joseph Anthony Stretanski, Vincent Gerard Grosso
  • Polyolefin light stabilizers
    Patent number: 3984348
    Abstract: O,O-Bis(aryl)amidothiophosphates, useful as light stabilizers in polyolefins, are those having the formula: ##EQU1## wherein: R is hydrogen, alkyl of 1-12 carbons, or halogen; Ar is phenyl or naphthyl; n is 1 or 2; and R' and R", which may be the same or different, are each selected from the group consisting of hydrogen, alkyl of 1-18 carbons, 2,2,6,6-tetramethyl-4-piperidyl, cycloalkyl of 5-6 carbons or both R' and R", together with the N to which they are attached, form a morpholino or piperidino ring. Such compounds are made by reacting PSCl.sub.3 with two moles of a phenol and then the product thereof with an amine.
    Type: Grant
    Filed: April 7, 1975
    Date of Patent: October 5, 1976
    Assignee: American Cyanamid Company
    Inventors: Richard Spector, Joseph Anthony Stretanski
  • Polymers stabilized with an organo-nickel compound and a dialkyl pentaerythritol diphosphite
    Patent number: 3975358
    Abstract: Nickel amine, nickel alkanolamine, nickel aquo, and nickel bis- complexes of 2,2'-thiobis(p-alkylphenol), used to stabilize materials against degradation by ultraviolet radiation, are stabilized against thermal degradation by use of a dialkyl pentaerythritol diphosphite.
    Type: Grant
    Filed: April 26, 1972
    Date of Patent: August 17, 1976
    Assignee: American Cyanamid Company
    Inventor: Joseph Anthony Stretanski
  • N-(2,2,6,6-tetramethyl-4-piperidyl) substituted amidothio phosphates
    Patent number: 3957798
    Abstract: 0,0-Bis(aryl)amidothiophosphates, useful as light stabilizers in polyolefins, are those having the formula: ##EQU1## wherein: R is hydrogen, alkyl of 1-12 carbons, or halogen; Ar is phenyl or naphthyl; n is 1 or 2; and R' and R", which may be the same or different, are each selected from the group consisting of hydrogen, alkyl of 1-18 carbons, 2,2,6,6-tetramethyl-4-piperidyl, cycloalkyl of 5-6 carbons or both R' and R", together with the N to which they are attached, form a morpholino or piperidino ring. Such compounds are made by reacting PSCl.sub.3 with two moles of a phenol and then the product thereof with an amine.
    Type: Grant
    Filed: April 7, 1975
    Date of Patent: May 18, 1976
    Assignee: American Cyanamid Company
    Inventors: Richard Spector, Joseph Anthony Stretanski
  • Light stabilizer compositions for polymers
    Patent number: 3932324
    Abstract: Nickel amine, nickel aquo, and nickel bis- complexes of 2,2'-thiobis(p-alkylphenol), used to stabilize materials against degradation by ultraviolet radiation, are stabilized against thermal degradation by use of a hydroxyalkylamide of the formula: ##EQU1## wherein R.sub.1 is alkyl or aryl;R.sub.2 is hydroxyalkyl of 2 to 4 carbon atoms; andR.sub.3 is hydrogen or hydroxyalkyl of 2 to 4 carbon atoms.
    Type: Grant
    Filed: June 13, 1974
    Date of Patent: January 13, 1976
    Assignee: American Cyanamid Company
    Inventor: Joseph Anthony Stretanski