Patent ID: 7686986

Claim:
Fire retardant magnesium hydroxide particles, comprising: a plurality of magnesium hydroxide particles having an average diameter of less than 1000 nm, each magnesium hydroxide particle having one or more surface functionalizing molecules bonded thereto in a molar ratio of magnesium to functionalizing molecules of less than 100, the functionalizing molecules having the following formula: -L 1 -R 1 -L 2 -R 2 wherein L 1 and L 2 are linking groups independently selected from the group consisting of a hydroxyl, a carboxyl, a carbonyl, an amine, an amide, a nitrogen having a free lone pair of electrons, a hemiacetal, a carboxy thiol, a thiol, a sulfonic acid, a sulfonyl halide, an acyl halide, and derivatives thereof; and R 1 and R 2 are independently a branched or unbranched, cyclic or acyclic, substituted or unsubstituted, saturated or unsaturated, or aromatic hydrocarbon having between 1 and 30 carbon atoms.