Esterifying, Etherifying Or Immunizing Patents (Class 8/120)
  • Patent number: 3963435
    Abstract: Cellulosic fabric is reacted with a mixture of diethylene glycol, dibasic acid, and either ethylene carbonate (1,3 dioxol-2-one) or propylene carbonate (4-methyl 1,3 dioxol-2-one) in a heated evacuated oven. The resultant product has polyester linear grafts and crosslinks and improved resistance to wrinkling.
    Type: Grant
    Filed: September 8, 1975
    Date of Patent: June 15, 1976
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventors: Truman L. Ward, Ruth R. Benerito
  • Patent number: 3962054
    Abstract: A process for the treatment of cellulosic textile materials comprising the following successive steps: effecting grafting of the cellulose textile material with a monomer which, when formed into a polymer, has the characteristics of an elastomer at ambient temperature; effecting irradiation treatment by ionizing radiation of the grafted cellulose material so as to achieve cross-linking of the grafts formed, thus leading to permanent crease resistant properties; and effecting post-irradiation treatment by storage enabling the cross-linking to be completed.
    Type: Grant
    Filed: October 26, 1973
    Date of Patent: June 8, 1976
    Assignee: Agence National de Valorisation de la Recherche (ANVAR)
    Inventors: Daniel Wattiez, Roger Chatelin, Paul Fabre
  • Patent number: 3934587
    Abstract: A novel material is disclosed and a process and apparatus for making the same, which process comprises reacting one side of a solid sheet or film of a polymeric compound containing reactable hydroxyl or amine groups with a vapor phase mixture of acid chloride and aldehyde. The resulting product is water-repellent along the treated side and water-permeable along the opposite, untreated side. Also disclosed are novel disposable articles such as sanitary clothing and containers for liquids fashioned from the material made by means of the process and apparatus of the present invention.
    Type: Grant
    Filed: June 17, 1974
    Date of Patent: January 27, 1976
    Inventor: Roy Gerald Gordon
  • Patent number: 3933421
    Abstract: A process for the treatment of natural and/or synthetic fibrous and filamentary materials, including living human hair, which involves applying to the fibrous or filamentary materials a polymeric compound containing at least one poly (oxyalkylene) or polyamide chain and at least one thiosulphuric acid or thiosulphate group. Such compounds having more than one thiosulphuric acid or thiosulphate group are curable and can be used with advantage in textile finishing, for example in the pigment dyeing and printing of fibrous materials including pure synthetic fibres, in application to fibres or fabrics to impart shape stabilisation, in application to keratinous fabrics to impart shrink resist properties and for the flat setting and permanent creasing of fabrics, and to impart antistatic properties to fibres and filaments. Hair may be treated according to the invention to improve its handle and for permanent waving and setting.
    Type: Grant
    Filed: December 5, 1972
    Date of Patent: January 20, 1976
    Assignee: I.W.S. Nominee Company Limited
    Inventor: David Malcolm Lewis
  • Patent number: 3931027
    Abstract: Cellulose material having improved resistance to thermal deterioration and having particular application as insulation material for electrical apparatus. The cellulose material is treated with an aqueous dispersion of a liquid, uncured, crosslinkable thermosetting resin, such as an epoxy resin, and a water soluble, nitrogen-containing compound. During curing of the resin, the cellulose molecules are believed to enter into the crosslinking reaction to provide a treated cellulosic product capable of withstanding the deteriorating action of heat over extended periods of time. A protein material, such as casein or isolated soy protein, can be added to the treating liquid and the protein not only contributes additional nitrogen groups to the treating media to further increase the thermal stability of the cellulose, but also acts as a film former. The thermal stability of the cellulose material can be further improved by the addition of an organic amine, such as melamine, to the treating liquid.
    Type: Grant
    Filed: June 25, 1973
    Date of Patent: January 6, 1976
    Assignee: McGraw-Edison Company
    Inventors: Fred S. Sadler, John Lapp