Patents Assigned to Chemstone, Inc.
  • Patent number: 12116730
    Abstract: The present disclosure describes a method to modify dried polymer films using printed crosslinking agents, including that the crosslinked polymer resulting from the method exhibits greater insolubility compared to crosslinked polymers made where the crosslinking agent and the polymer are combined and applied as a homogenous solution. Articles of manufacture generated by such a method are also disclosed.
    Type: Grant
    Filed: April 15, 2020
    Date of Patent: October 15, 2024
    Assignee: ChemStone, Inc.
    Inventors: Jonathan Spender, Michael Albert Bilodeau, Samuel Mikail
  • Patent number: 12018435
    Abstract: The present disclosure describes acyl halide liquid dispersions and tunable methods of treating cellulosic materials with compositions that provide increased hydrophobicity and/or lipophobicity to such materials without sacrificing the biodegradability thereof. The methods as disclosed provide for reacting acyl halides with and binding of saccharide fatty acid esters on cellulosic materials, including that the disclosure provides products made by such methods. The materials thus treated display higher hydrophobicity, lipophobicity, barrier function, and mechanical properties, and may be used in any application where such features are desired.
    Type: Grant
    Filed: March 6, 2020
    Date of Patent: June 25, 2024
    Assignee: ChemStone, Inc.
    Inventors: Jonathan Spender, Michael Albert Bilodeau, Samuel Mikail
  • Patent number: 11987935
    Abstract: The present disclosure describes methods of treating fibrous cellulosic materials with sucrose fatty acid ester containing particles (carrier systems) that allow for modifications of surfaces, including making such surfaces water resistance and/or oil/grease resistance. The methods as disclosed provide combining at least one saccharide fatty acid esters (SFAE) with a polymer (e.g., latexes) to form micellular particles and applying such particles to substrates including fibrous cellulose-based materials (e.g., pulp) to form, inter alia, molded products. Compositions comprising combinations of SFAE, a latex and optionally a mineral or other additives are also disclosed.
    Type: Grant
    Filed: January 24, 2020
    Date of Patent: May 21, 2024
    Assignee: ChemStone, Inc.
    Inventors: Jonathan Spender, Michael Albert Bilodeau, Samuel Mikail
  • Patent number: 11970816
    Abstract: In general, the present invention is directed to a method of cooking wood in a cooking liquor medium. The method comprises a step of providing wood to a treatment vessel and contacting the wood with a digester additive composition. The composition comprises a first surfactant comprising an anionic surfactant, a derivative thereof, a salt thereof, or any combination thereof and a second surfactant comprising a polyoxyalkylene glycol or a derivative thereof. Additionally, according to another embodiment, the present invention is directed to a digester additive composition comprising a first surfactant comprising an anionic surfactant, a derivative thereof, a salt thereof, or any combination thereof and a second surfactant comprising a polyoxyalkylene glycol or a derivative thereof.
    Type: Grant
    Filed: August 11, 2021
    Date of Patent: April 30, 2024
    Assignee: ChemStone, Inc.
    Inventors: Michael M. Blackstone, Peter Spizzirri
  • Patent number: 11091875
    Abstract: In general, the present invention is directed to a method of cooking wood in a cooking liquor medium. The method comprises a step of providing wood to a treatment vessel and contacting the wood with a digester additive composition. The composition comprises a first surfactant comprising an anionic surfactant, a derivative thereof, a salt thereof, or any combination thereof and a second surfactant comprising a polyoxyalkylene glycol or a derivative thereof. Additionally, according to another embodiment, the present invention is directed to a digester additive composition comprising a first surfactant comprising an anionic surfactant, a derivative thereof, a salt thereof, or any combination thereof and a second surfactant comprising a polyoxyalkylene glycol or a derivative thereof.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: August 17, 2021
    Assignee: ChemStone, Inc.
    Inventors: Michael M. Blackstone, Peter Spizzirri
  • Patent number: 5501769
    Abstract: A process for cooking wood to pulp by contacting the wood with a deresinating agent containing fatty acid esters of polyoxyalkene glycols priors to cooking the wood with an alkaline liquor to simultaneously reduce pulp rejects and increase pulp yield.
    Type: Grant
    Filed: March 28, 1994
    Date of Patent: March 26, 1996
    Assignee: Chemstone, Inc.
    Inventors: Michael M. Blackstone, Hugh E. Nuckolls