Patent ID: 6645390
Filing Date: 2003-11-11
Classification: A62D,B09C,C02F

Abstract:
A method of firefighting including the steps of preparing a biodegradable, non-toxic foamable firefighting concentrate composition comprising, by volume, from about 4 to about 40 parts of an ethoxylated tertiary amine having 2-10 ethoxy groups per mol selected from the group consisting of C16-C18 animal-based tallow amines and coconut amines, from about 1 to about 15 parts of at least one aliphatic carboxylic acid having from 6 to 12 carbon atoms; about 1 to 6 parts of at least one of a C7-C12 aliphatic alcohol, from 0 to 10 parts of a C4 and lower alcohol, from about 0.5 to about 2 parts of a fatty amide type cationic surfactant, from about 0.5 to about 2 parts of an aliphatic substituted coco-amidopropyl betaine, and a preservative, and the balance being water to create a total of about 100 parts by volume, said concentrate composition additionally including injecting said concentrate composition at high pressure into a turbulent stream of firefighting water such that said firefighting water includes up to about 6% of said concentrate composition, and directing said firefighting water toward a target to create a wetted target area covered at least in part by a blanket of stable, fire resistant foam.