Patents Assigned to Envirosol Systems International, Ltd.
  • Patent number: 4432797
    Abstract: A water borne wood stain resistant to pigment settling prior to use. A preferred formulation contains the following components in approximate parts by weight:______________________________________ Component Amount ______________________________________ Film forming resin 5-8 Pigment 5-15 Water thickener 0.5-2 Water 89.
    Type: Grant
    Filed: March 11, 1982
    Date of Patent: February 21, 1984
    Assignee: Envirosol Systems International, Ltd.
    Inventors: Ramesh C. Vasishth, Robert S. Wang
  • Patent number: 4285997
    Abstract: A method for treating wood to enhance its properties comprising: contacting the wood to be treated with sufficient water dilutable resin formed from one or more vinyl monomers in a solvent consisting essentially of water to deposit an effective amount of said resin in the cell walls of said wood, said resin containing molecules of a size which can enter the free space in said cell walls in the presence of said solvent and having a minimum film forming temperature not greater than ambient, and converting the resin in said cell walls to a water insoluble form at ambient conditions. The treatment provides wood of improved dimensional stability and resistance to checking on exposure to water. Further improvements in the wood properties can be obtained by depositing additives such as water soluble preservatives or fire retardants in the cell walls of the wood and fixing the additives therein with the insolublized resin.
    Type: Grant
    Filed: November 5, 1979
    Date of Patent: August 25, 1981
    Assignee: Envirosol Systems International, Ltd.
    Inventors: Ramesh C. Vasishth, Dodwell P. De Silva
  • Patent number: 4276329
    Abstract: A method for treating wood to enhance its properties comprising: contacting the wood to be treated with sufficient water dilutable resin in a water miscible solvent and water to deposit said resin in the cell walls of the wood fibers, said resin containing molecules of a size which can enter the free space in said cell walls, and converting the resin in said cell walls to a water insoluble form. The treatment provides wood of improved dimensional stability and resistance to checking on exposure to water. Further improvements in the wood properties can be obtained by depositing additives such as preservatives or fire retardants in the cell walls of the wood and fixing the additives therein with the insolubilized resin.
    Type: Grant
    Filed: November 5, 1979
    Date of Patent: June 30, 1981
    Assignee: Envirosol Systems International, Ltd.
    Inventors: Ramesh C. Vasishth, Dodwell P. deSilva
  • Patent number: 4240940
    Abstract: An improved aerosol paint formulation which can be cleaned up with water, comprising a water soluble film forming resin in a solvent system of water soluble solvent and water insoluble solvent. The solvent system contains a relatively large proportion of water insoluble solvent for economy and fire safety.
    Type: Grant
    Filed: February 16, 1979
    Date of Patent: December 23, 1980
    Assignee: Envirosol Systems International, Ltd.
    Inventors: Ramesh C. Vasishth, Robert S. Wang
  • Patent number: 4225477
    Abstract: Duration of the initial interval when a clear varnish can be recoated without wrinkling can be changed, the varnish being a water dilutable alkyd resin formulation in a water-organic polar solvent system. The recoating interval is changed by changing the weight ratio of water to organic polar solvent in the solvent system, with increases in the weight ratio of water to organic polar solvent causing increases in the duration of the interval and decreases in the weight ratio providing decreases therein. Compositions utilizing the above method having increased duration of the initial recoating interval are described.
    Type: Grant
    Filed: October 30, 1978
    Date of Patent: September 30, 1980
    Assignee: Envirosol Systems International, Ltd.
    Inventors: Ramesh C. Vasishth, Robert S. Wang