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Abstract A new trend in flame- and heat-resistant polymers is the modification of organic by-products such as lignins. Here we continue a discussion of lignin modification; in particular, the reaction of lignosulfonates with chlorophosphazenes. The reactivity of Borregaard-type lignosulfonates toward chlorophosphazenes was studied. The properties of the products obtained, especially their flame and heat resistance, as well as SEM data, were investigated.
H. Struszczyk (1986) studied this question.