Preparation of Some New Fire-Resistant Samples and Their Application

Samples of polyurethane- halogenated fatty acids were prepared by impregnating and treating some strips of paper (waste) with typical solution. It was composed of a fatty acids (coconut oil, and Castor oil), a polyalcohol (glycerol)-dissolved in toluene and butyl acetate 1: 1-toluene diisocyanate and variable proportions of halogenated fatty acids (trichloroacetic acid and/or bromoacetic acid), in presence of dibutyltin dilaurate which acts as a catalyst and stabilizer. The prepared polyurethane- halogenated fatty acids samples were screened as fire-resistant paper. Standard test method was used to evaluate these samples. Some of it (optimum equivalent ratio, isocyanate/carboxyl was 2.28 based on carboxyl group in bromo acetic acid) were found to be efficient as fire-resistant paper.