Accession Number : ADD006412

Title :   Novel Aqueous Foam Formulation and Method.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s) : Brown,Harry A , Jr

Report Date : 23 Aug 1979

Pagination or Media Count : 14

Abstract : The invention relates to a new, stable high-expansion aqueous foam formulation containing dibenz-(b,f)-1,4-oxazepine and stabilizers selected from glycerine, carboxyl vinyl polymers, and mixtures thereof. The invention also relates to a method of obtaining visual obscuration and area denial in military operations through use of a novel, stable, high-expansion aqueous foam formulation containing dibenz-(b,f)-1,4-oxazepine in sufficient quantities to provide area denial for extended periods of time. The invention further relates to an aqueous foam formulation which will remain stale even when stored for extended periods of time under severe environmental stress conditions. The invention still further relates to an aqueous foam formulation containing dibenz-(b,f)-1,4-oxaepine as a deterrent which will adhere to the surfaces of objects or persons entering or moving about in a foam generated from the formulation. The invention also relates to a foam formulation which can be used as a single composite solution or as two separate solutions to be mixed immediately prior to foam generation in conventional fire fighting foam generators. Prior foam formulations have generally been adequate for achieving visual obscuration for short periods of time. Previous studies on foam formulations have used high expansion foams as carriers for selected deterrent chemicals such as military tear gar (CS), but these foams have exhibited inadequate foam stability in conjunction with a high liquid drainage rate. Only short-term effectiveness in visual obscuration and area denial have been achieved. (Author)

Descriptors :   *Patent applications, *Foam, *Formulations(Chemistry), Mixtures, Glycerols, Vinyl plastics, Polymers, Stability, Environmental tests, Stresses, Composite materials, Test methods, Generators

Subject Categories : Polymer Chemistry
      Laminates and Composite Materials
      Miscellaneous Materials
      Plastics

Distribution Statement : APPROVED FOR PUBLIC RELEASE