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US 8,212,073 B2Granted
Protective barrier composition comprising reaction of phosphorous acid with amines applied to a substrate
OwnerRobert Valentine Kasowskiinventor
Life of this patent
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Abstract
This invention relates to flame barrier compositions as well as a method for the preparation of the flame barrier compositions formed from a flame retardant composition and water. A protective barrier comprises a flame barrier composition or a flame barrier polymer on top of a layer or sandwiched between two or more layers of glass, wood, paper, polymer films, and other layered materials as well as mixtures of layers.
Claims8
A method for preparing a flame retardant composition, the method comprising the steps of:
- a) reacting an ethyleneamine or a mixture of ethyleneamines with polyphosphoric acid and forming a two phase mixture comprising a viscous syrup that comprises the flame retardant composition, and a non-viscous phase;
- and
- b) separating the syrup from the non-viscous phase;
- with the proviso that said polyphosphoric acid reactant has been prepared by ion exchange.
1 more element
Dependencies are inferred from the claim text.