Patents by Inventor Andrew Piotrowski

Andrew Piotrowski 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).

  • Publication number: 20210079301
    Abstract: The present invention provides fire-retarded rigid polyurethane foam comprising the reaction product of polyol and isocyanate foam forming components and a dialkyl phosphorus-containing compound, namely a reactive mono-hydroxyl-functional dialkyl phosphinates, as flame retardant, serving as highly efficient reactive flame retardant in said rigid polyurethane foam.
    Type: Application
    Filed: July 23, 2018
    Publication date: March 18, 2021
    Inventors: Andrew PIOTROWSKI, Joseph ZILBERMAN, Jeffrey STOWELL, Mark GELMONT, Mayank SINGH, Zhihao CHEN, Eran GLUZ
  • Patent number: 10899911
    Abstract: The present invention provides dialkyl phosphorus-containing compounds, namely reactive mono-hydroxyl-functional dialkyl phosphinates, serving as highly efficient reactive flame retardants in flexible polyurethane foams. The invention further provides fire-retarded polyurethane compositions comprising said the reaction product of the mono-hydroxyl-functional dialkyl phosphinates with polyol and isocyanate foam forming components.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: January 26, 2021
    Assignee: ICL-IP America Inc.
    Inventors: Andrew Piotrowski, Joseph Zilberman, Jeffrey Stowell, Mark Gelmont, Mayank Singh, Zhihao Chen, Eran Gluz
  • Publication number: 20200291232
    Abstract: There is provided herein a flame retardant composition containing a thermosetting resin and a phosphorus-containing polysiloxane flame retardant, which flame retardant composition can be used in prepregs, laminate, bonding sheets and printed wiring boards.
    Type: Application
    Filed: December 3, 2018
    Publication date: September 17, 2020
    Inventors: Andrew PIOTROWSKI, Meng ZHANG
  • Patent number: 10730995
    Abstract: The present invention provides novel cyclic phosphorus-containing compounds, namely hydroxyl-functional phospholene-1-oxides, serving as highly efficient reactive flame retardants in urethane systems, particularly in flexible polyurethane foams, semi-rigid and rigid polyurethane and polyisocyanurate foams. The invention further provides fire-retarded polyurethane compositions comprising said hydroxyl-functional phospholene-1-oxides.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: August 4, 2020
    Assignee: ICL-IP America Inc.
    Inventors: Joseph Zilberman, Andrew Piotrowski, Eran Gluz, Jeffrey Stowell, Mark Gelmont, Zhihao Chen, Mayank Singh
  • Patent number: 10723833
    Abstract: The present invention provides novel cyclic phosphorus-containing compounds, namely hydroxyl-functional phospholene-1-oxides, serving as highly efficient reactive flame retardants in urethane systems, particularly in flexible polyurethane foams, rigid polyurethane foams and rigid polyisocyanurate foams. The invention further provides fire-retarded polyurethane compositions comprising said hydroxyl-functional phospholene-1-oxides.
    Type: Grant
    Filed: November 10, 2016
    Date of Patent: July 28, 2020
    Assignee: ICL-IP America Inc.
    Inventors: Joseph Zilberman, Andrew Piotrowski, Eran Gluz, Jeffrey Stowell, Mark Gelmont, Zhihao Chen, Mayank Singh
  • Patent number: 10500823
    Abstract: There is provided herein a flame retardant and curing agent compound for curing thermosetting resins, e.g., epoxy resins, a composition comprising a thermosetting resin, e.g., an epoxy resin and the curing agent, an article comprising the curing agent, and a method of making the curing agent.
    Type: Grant
    Filed: November 1, 2016
    Date of Patent: December 10, 2019
    Assignee: ICL-IP America Inc.
    Inventors: Andrew Piotrowski, Joseph Zilberman, Sergei V. Levchik, Meng Zhang, Eran Gluz, Kali Ananth Suryadevara
  • Patent number: 10472462
    Abstract: The invention relates to a process for preparing bromine-containing polymer, comprising a Friedel-Crafts alkylation reaction of tetrabromoxylylene dihalide, or tetrabromoxylylene dihalide in combination with pentabromobenzyl halide, with a reactant having one or more six-membered aromatic rings, wherein the reaction takes place in a solvent in the presence of a Friedel-Crafts catalyst, and isolating from the reaction mixture the bromine-containing polymer. The so-formed polymers and their use as flame retardants form additional aspects of the invention.
    Type: Grant
    Filed: February 4, 2019
    Date of Patent: November 12, 2019
    Assignee: Bromine Compounds Ltd.
    Inventors: Mark Gelmont, Michael Yuzefovich, Andrew Piotrowski, David Yoffe, Ron Frim, Yaniv Hirschsohn
  • Publication number: 20190284402
    Abstract: There is provided herein a composition containing (A) a phosphorus-containing aromatic polyester of the general formula (I) described herein which has a weight average molecular weight of from 1,000 to 20,000 and which is concurrently a flame retardant O and an active ester curing agent, and, (B) a solvent, such as a solvent commonly used in thermosetting resin formulations and copper-cias laminate preparation.
    Type: Application
    Filed: November 20, 2017
    Publication date: September 19, 2019
    Inventors: Andrew PIOTROWSKI, Joseph ZILBERMAN, Meng ZHANG, Eran GLUZ, Sergei LEVCHIK
  • Patent number: 10336858
    Abstract: The invention relates to a process for preparing bromine-containing polymer, comprising a Friedel-Crafts alkylation reaction of tetrabromoxylylene dihalide, or tetrabromoxylylene dihalide in combination with pentabromobenzyl halide, with a reactant having one or more six-membered aromatic rings, wherein the reaction takes place in a solvent in the presence of a Friedel-Crafts catalyst, and isolating from the reaction mixture the bromine-containing polymer. The so-formed polymers and their use as flame retardants form additional aspects of the invention.
    Type: Grant
    Filed: July 7, 2015
    Date of Patent: July 2, 2019
    Assignee: Bromine Compounds Ltd.
    Inventors: Mark Gelmont, Michael Yuzefovich, Andrew Piotrowski, David Yoffe, Ron Frim, Yaniv Hirschsohn
  • Publication number: 20190169359
    Abstract: The invention relates to a process for preparing bromine-containing polymer, comprising a Friedel-Crafts alkylation reaction of tetrabromoxylylene dihalide, or tetrabromoxylylene dihalide in combination with pentabromobenzyl halide, with a reactant having one or more six-membered aromatic rings, wherein the reaction takes place in a solvent in the presence of a Friedel-Crafts catalyst, and isolating from the reaction mixture the bromine-containing polymer. The so-formed polymers and their use as flame retardants form additional aspects of the invention.
    Type: Application
    Filed: February 4, 2019
    Publication date: June 6, 2019
    Inventors: Mark Gelmont, Michael Yuzefovich, Andrew Piotrowski, David Yoffe, Ron Frim, Yaniv Hirschsohn
  • Publication number: 20190119468
    Abstract: The present invention provides dialkyl phosphorus-containing compounds, namely reactive mono-hydroxyl-functional dialkyl phosphinates, serving as highly efficient reactive flame retardants in flexible polyurethane foams. The invention further provides fire-retarded polyurethane compositions comprising said the reaction product of the mono-hydroxyl-functional dialkyl phosphinates with polyol and isocyanate foam forming components.
    Type: Application
    Filed: December 20, 2018
    Publication date: April 25, 2019
    Inventors: Andrew PIOTROWSKI, Joseph ZILBERMAN, Jeffrey STOWELL, Mark GELMONT, Mayank SINGH, Zhihao CHEN, Eran GLUZ
  • Patent number: 10208187
    Abstract: The present invention provides dialkyl phosphorus-containing compounds, namely reactive mono-hydroxyl-functional dialkyl phosphinates, serving as highly efficient reactive flame retardants in flexible polyurethane foams. The invention further provides fire-retarded polyurethane compositions comprising said the reaction product of the mono-hydroxyl-functional dialkyl phosphinates with polyol and isocyanate foam forming components.
    Type: Grant
    Filed: July 23, 2018
    Date of Patent: February 19, 2019
    Assignee: ICL-IP America Inc.
    Inventors: Andrew Piotrowski, Joseph Zilberman, Jeffrey Stowell, Mark Gelmont, Mayank Singh, Zhihao Chen, Eran Gluz
  • Publication number: 20190023873
    Abstract: The present invention provides dialkyl phosphorus-containing compounds, namely reactive mono-hydroxyl-functional dialkyl phosphinates, serving as highly efficient reactive flame retardants in flexible polyurethane foams. The invention further provides fire-retarded polyurethane compositions comprising said the reaction product of the mono-hydroxyl-functional dialkyl phosphinates with polyol and isocyanate foam forming components.
    Type: Application
    Filed: July 23, 2018
    Publication date: January 24, 2019
    Inventors: Andrew Piotrowski, Joseph Zilberman, Jeffrey Stowell, Mark Gelmont, Mayank Singh, Zhihao Chen, Eran Gluz
  • Patent number: 10144872
    Abstract: There is provided herein a flame retardant additive composition comprising (a) a cyclic phosphonate mixture of (i) (5-ethyl-2-methyl-2-oxido-1,3,2-dioxaphosphorinan-5-yl)methyl methyl ester of P-alkylphosphonic acid and (ii) bis[(5-ethyl-2-2-methyl-2-oxido-1,3,2-dioxaphosphorinan-5-yl)methyl]ester of P-alkyl phosphonic acid; and, (b) an aryl bisphosphate ester of the general formula (I) herein. There is also provided herein a polyurethane foam containing the flame retardant additive composition as well as articles made comprising said polyurethane foam.
    Type: Grant
    Filed: December 12, 2014
    Date of Patent: December 4, 2018
    Assignee: ICL-IP America Inc.
    Inventors: Jeffrey K. Stowell, Andrew Piotrowski, Mike Nagridge, Greg Symes
  • Publication number: 20180326708
    Abstract: There is provided herein a flame retardant and curing agent compound for curing thermosetting resins, e.g., epoxy resins, a composition comprising a thermosetting resin, e.g., an epoxy resin and the curing agent, an article comprising the curing agent, and a method of making the curing agent.
    Type: Application
    Filed: November 1, 2016
    Publication date: November 15, 2018
    Inventors: Andrew Piotrowski, Joseph Zilberman, Sergei V Levchik, Meng Zhang, Eran Gluz, Kali Ananth Suryadevara
  • Publication number: 20180319927
    Abstract: The present invention provides novel cyclic phosphorus-containing compounds, namely hydroxyl-functional phospholene-1-oxides, serving as highly efficient reactive flame retardants in urethane systems, particularly in flexible polyurethane foams, semi-rigid and rigid polyurethane and polyisocyanurate foams. The invention further provides fire-retarded polyurethane compositions comprising said hydroxyl-functional phospholene-1-oxides.
    Type: Application
    Filed: November 10, 2016
    Publication date: November 8, 2018
    Inventors: Joseph ZILBERMAN, Andrew PIOTROWSKI, Eran GLUZ, Jeffrey STOWELL, Mark GELMONT, Zhihao CHEN, Mayank SINGH
  • Publication number: 20180319947
    Abstract: The present invention provides novel cyclic phosphorus-containing compounds, namely hydroxyl-functional phospholene-1-oxides, serving as highly efficient reactive flame retardants in urethane systems, particularly in flexible polyurethane foams, rigid polyurethane foams and rigid polyisocyanurate foams. The invention further provides fire-retarded polyurethane compositions comprising said hydroxyl-functional phospholene-1-oxides.
    Type: Application
    Filed: November 10, 2016
    Publication date: November 8, 2018
    Inventors: Joseph ZILBERMAN, Andrew PIOTROWSKI, Eran GLUZ, Jeffrey STOWELL, Mark GLEMONT, Zhihao CHEN, Mayank SINGH
  • Publication number: 20170158962
    Abstract: There is provided herein a flame retardant additive composition comprising (a) a cyclic phosphonate mixture of (i) (5-ethyl-2-methyl-2-oxido-1,3,2-dioxaphosphorinan-5-yl)methyl methyl ester of P-alkylphosphonic acid and (ii) bis[(5-ethyl-2-2-methyl-2-oxido-1,3,2-dioxaphosphorinan-5-yl)methyl]ester of P-alkyl phosphonic acid; and, (b) an aryl bisphosphate ester of the general formula (I) herein. There is also provided herein a polyurethane foam containing the flame retardant additive composition as well as articles made comprising said polyurethane foam.
    Type: Application
    Filed: December 12, 2014
    Publication date: June 8, 2017
    Inventors: Jeffrey K. STOWELL, Andrew PIOTROWSKI, Mike NAGRIDGE, Greg SYMES
  • Publication number: 20170145151
    Abstract: The invention relates to a process for preparing bromine-containing polymer, comprising a Friedel-Crafts alkylation reaction of tetrabromoxylylene dihalide, or tetrabromoxylylene dihalide in combination with pentabromobenzyl halide, with a reactant having one or more six-membered aromatic rings, wherein the reaction takes place in a solvent in the presence of a Friedel-Crafts catalyst, and isolating from the reaction mixture the bromine-containing polymer. The so-formed polymers and their use as flame retardants form additional aspects of the invention.
    Type: Application
    Filed: July 7, 2015
    Publication date: May 25, 2017
    Applicant: Bromine Compounds Ltd.
    Inventors: Mark Gelmont, Michael Yuzefovich, Andrew Piotrowski, David Yoffe, Ron Frim, Yaniv Hirschsohn
  • Patent number: 8921439
    Abstract: A monohydroxy cyclic phosphonate substantially free of polyhydroxy phosphonate is employed as a reactive flame retardant in flexible polyurethane.
    Type: Grant
    Filed: September 19, 2011
    Date of Patent: December 30, 2014
    Assignee: ICL-IP America Inc.
    Inventors: Andrew Piotrowski, Anantha N. Desikan, Sophia Dashevsky