Flame resistant cellulosic product containing antimony pentoxide and polyvinyl bromide
AssigneeInternational Telephone and Telegraph Corporation
InventorsDavid G. Unrau, Norman A. Portnoy, Peter J. Hartmann
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Abstract
A regenerated cellulosic product is made flame resistant by the addition to the cellulosic solution from which the product is regenerated of from 3 to 7% by weight of colloidal antimony pentoxide and from 5 to 30% by weight of polyvinyl bromide.
Claims10
A flame resistant cellulosic product regenerated from a cellulosic viscose solution containing from 3 to 7% by weight of colloidal Sb.sub.2 O.sub.5 and from 5 to 30% by weight of polyvinyl bromide, said weights being based upon the weight of cellulose.
A process of producing a flame resistant regenerated cellulosic product comprising
- adding from 3-7% by weight of colloidal Sb.sub.2 O.sub.5 and from 5 to 30% by weight of polyvinyl bromide, said weights being based upon the weight of cellulose, to a cellulosic viscose solution, and
- regenerating a cellulose product from said cellulosic solution.
Dependencies are inferred from the claim text.