POLYSULFIDES AS EPOXY MATRIX MODIFIERS

Thiokol LP liquid polysulfide polymers have a long history of use as e poxy modifiers. Their usage ho,wever has been limited by tire thiol od our, restrictive cure chemistry and high solubility to liquid epoxy re sins. Morton international, the manufacturers of Thiokol LP liquid pol ymers have developed a range of polysulfide based polymers having diff erent end groups and solubilities that overcome the problem of thiol o dour. These polymers are finding uses as flexibilisers, adhesion promo ters and toughening agents to epoxy matrix systems.