Rockwell International Corporation

Northrop Corporation

Paul J Dynes

Charles L Hamermesh

Peter A Hogenson

Laura A Hunter

An adhesive patch for a composite structure, an adhesive for that patch and a method for forming the adhesive patch for the composite structure are described. The adhesive includes three uncured components of a bismaleimide polymeric mixture. Two of these components are liquid. The liquids include a liquid vinyl-terminated rubber monomer and a liquid bis(alkenylaromatic)aryl or bis(alkenylaromatic)alkyl monomer. The further component is a solid bismaleimide monomer that is intimately mixed and suspended in the liquid bis(alkenylaromatic)aryl or bis(alkenylaromatic)alkyl monomer and liquid vinyl-terminated rubber.

Long shelf life bismaleimide structural adhesive

A polymeric or plastic coating is provided which protects coated structures by forming an intumescent insulative fire resistant barrier. The coating is formed from the product of mixing an aromatic polyisocyanate, an aromatic polycarboxylic compound and about 1 to about 20% by weight of furfuryl alcohol. The structure to be protected is coated with the product of the mixture and the coating is dried. An intumescent polyimide fire resistant foam is formed when the coating is exposed to a (non-flame) heat source at temperature ranging from about 110.degree. C. to about 140.degree. C.

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Los Angeles, CA, United States of America

Paul J Dynes