Fire retardant polymer compositions containing a borate-sulfate mixture
AssigneeUnited States Borax & Chemical Corporation
InventorRobert W. Sprague
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Abstract
Polymeric resins containing a fire retardant amount of a borate-sulfate mixture which is predominately boric acid and alkali or alkaline earth metal sulfate. Preferred compositions also contain antimony oxide and/or a halogen source.
Claims16
A fire-retardant additive comprising antimony oxide and a borate-sulfate mixture formed by reaction of sulfuric acid with a borate selected from alkali metal borates, alkaline earth metal borates, and mixtures thereof.
A fire-retardant composition comprising an organic synthetic polymer and a fire-retardant amount of a borate-sulfate mixture formed by reaction of sulfuric acid with an alkali metal borate, alkaline earth metal borate, or mixtures thereof.
The method of fire retarding an organic synthetic polymer which comprises incorporating in said polymer a fire-retardant amount of a borate-sulfate mixture formed by reaction of sulfuric acid with a borate selected from alkali metal borates, alkaline earth metal borates, and mixtures thereof.
A fire-retardant additive comprising a mixture of boric acid, alkali and/or alkaline earth metal sulfate and antimony oxide.
Dependencies are inferred from the claim text.