Patents Assigned to PETER MORRIS RESEARCH AND DEVELOPMENT LIMITED
  • Method of making a water-soluble polymer composition
    Patent number: 11718010
    Abstract: A method of creating a processable water soluble polymer, the method comprising the steps of: extruding a water soluble polymer composition from an extruder barrel without use of a die, wherein the extruder barrel is not vented other than via its extruder outlet, to produce an irregularly shaped polymer extrudate; directing the irregularly shaped polymer extrudate onto a chilled conveyor to cool the irregularly shaped polymer extrudate to below 60° C.; and granulating the irregularly shaped polymer extrudate to form a granulate.
    Type: Grant
    Filed: May 26, 2020
    Date of Patent: August 8, 2023
    Assignee: PETER MORRIS RESEARCH AND DEVELOPMENT LIMITED
    Inventor: Peter Morris
  • Water-soluble polymer and polymer internal lubricant
    Patent number: 10954373
    Abstract: A method of making a water soluble polymer composition comprising blending a water soluble polymer with at least 15% by weight of the total weight of the composition of a hygroscopic salt to act as a lubricant to render the polymer extrudable and/or mouldable, wherein the water content of the composition is of less than 10% by weight of the total weight of the composition.
    Type: Grant
    Filed: May 21, 2019
    Date of Patent: March 23, 2021
    Assignee: PETER MORRIS RESEARCH AND DEVELOPMENT LIMITED
    Inventor: Peter Morris
  • Water-soluble polymer and polymer internal lubricant
    Patent number: 10358549
    Abstract: A melt-processable water soluble polymer composition having a high Melt Flow Index comprising a blend of a water soluble polymer with at least 15% by weight of the total composition of a hygroscopic salt to act as a lubricant to render the polymer extrudable and/or mouldable, wherein the water content of the salt is of less than 10% by weight, and optionally a solvent polymer plasticizer in a lower amount by weight percent than the hygroscopic salt.
    Type: Grant
    Filed: March 18, 2014
    Date of Patent: July 23, 2019
    Assignee: PETER MORRIS RESEARCH AND DEVELOPMENT LIMITED
    Inventor: Peter Morris