Albany International Corporation

Syncom International, Inc.

Robert W Bouley

Robert F Kovar

Novel macrospheres having improved resistance to implosion under hydrostatic pressure. The macrospheres are useful in buoyancy materials and devices.

Deep water flotation devices

Disclosure is made of a method of curing the polyepoxide resin binder component of polyepoxide based syntactic foams. Ketones are employed to reversably block primary amine groups on polyamine curing agents during the initial curing. As the cure progresses, the block is removed to complete the cure. The result is a moderation of peak exotherms generally associated with the cure, inhibiting degradation of the product foam.

Curing polyepoxide resin binders in syntactic foam forming compositions

Disclosure is made of a method of curing the polyepoxide resin binder component of polyepoxide based syntactic foams of high density. Ketones are employed to reversably block primary amine groups on polyamine curing agents during the initial curing. As the cure progresses, the block is removed to complete the cure. The result is a moderation of peak exotherms generally associated with the cure, inhibiting degradation of the product foam.

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East Springfield, MA, United States of America

Robert W Bouley