Twin-tail hydrocarbon surfactants for foam compositions

Abstract

The present disclosure generally pertains to novel water soluble oligomeric and polymeric additives derived from oligomeric and polymeric amines; esters or halides of twin tail alkyl group comprisingacids with intervening quaternary ammonium groups; optionally and preferably hydrophilic group comprising compounds capable of reacting with primary, secondary or tertiary amino groups; and optionallyhydrophobic group comprising compounds. The compounds of the invention are useful as additives for aqueous film forming foam agents, and can perform as partial or complete replacements for fluorosurfactants and / or fluorinated foam stabilizers in foams.

Description

[0001] Background of the invention [0002] Fluorosurfactants can be used to lower the surface tension of water to 15 dynes / cm in distilled, tap, or seawater; this property allows fluorosurfactants to be used in some commercial foam formulations. Useful fluorosurfactants typically have a single perfluoroalkyl hydrophobic tail and one or more hydrophilic tails separated by linking groups. Numerous documents in the art describe such "monomeric" single perfluorotail type surfactants and their use in aqueous foams and alcohol resistant blowing agents. Generally, their usability has been described as due to improved mobility of smaller molecules and their ability to migrate rapidly to liquid-air interfaces. Linear molecules are generally preferred due to their lower surface tension properties. This is the case for Capstone 1157 and 1183, Chemguard S-103A, S-106A, and FS-100, all of which are linear, effective surfactants with a single perfluoroalkyl tail and a single hydrophilic ta...

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Problems solved by technology

However, some environmental groups have recently pointed out that C6-based products may cause more problems than originally thought, which has led to stricter controls on C6 fluorinated chemicals in some countries

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