Prc De Soto International, Inc.

Pbt Brands, Inc.

Advanced Chemistry and Technology, Inc.

3m Innovative Properties Company

Courtaulds Aerospace, Inc.

David W Jordan

Jonathan D Zook

Chandra B Rao

George Jones

Dean M Willard

Michael Cosman

Susan E DeMoss

Hakam Singh

Ahmed Sharaby

Stephane E Pyrek

Dewey L Mullins, Ii

Suzanna DeMoss

Suzanna Gibson DeMoss

Suzanna Gibson

A uniformly premixed sealant is extruded into a packaging form and allowed to pressure equilibrate prior to freezing. Upon warming the sealant begins to cure. The storage of the preformed sealant formulation under cold conditions arrests the activity of cure catalysts and accelerators mixed therethrough. The sealant is readily extruded into a preform shape containing a lightweight filler. A release film is provided to avoid contact with the sealant preformed in a shape during application to a substrate.

Frozen, lightweight curable sealant

Sealant and potting formulations are provided which are prepared from components including ungelled mercapto-terminated polymer(s) prepared by reacting reactants comprising polyvinyl ether monomer(s) and polythiol material(s); curing agent(s) reactive with a mercapto group of the mercapto-terminated polymer; and additive(s) selected from the group consisting of fillers, adhesion promoters, plasticizers and catalysts.

Sealants and potting formulations including mercapto-terminated polymers produced by the reaction of a polythiol and polyvinyl ether monomer

A uniformly premixed sealant is provided as a frozen preform that upon warming cures in the preform shape. The storage of the preformed sealant formulation under cold conditions arrests the activity of cure catalysts and accelerators mixed therethrough. A release film is provided to avoid contact with the preformed sealant during application to a substrate. The preformed sealant is particularly well suited for use in aerospace applications.

Frozen, preformed curable seal

Chemically resistant polythioethers and formation thereof

Chemically resistant polythiothers and formation thereof

Curable polythiol-cyclopolyene sealant compounds

High strength polymers and aerospace sealants therefrom

A blend of multimodal average molecular weight sulfur or ether linkage containing organic polymers provides sealants, potting compounds and moldable compositions with good physical properties. In the case of S-containing polythioether or polysulfide, these properties are well suited to the formulation of aerospace sealants even using standard lightweight filler technology. Sealants based upon this multimodal blend concept exhibit improved strength and toughness even when relatively large amounts of lightweight fillers are used. Multimodal polyurethanes and other ether linkage containing polymers also show enhanced physical properties.

Sealants containing multimodal polymer blends

Sealant and potting formulations are provided which includes ungelled polymer(s) prepared from components including polyvinyl ether monomer(s) and polythiol material(s), the ungelled polymer being terminated with functional groups other than a thiol group; curing agent(s); and at least one additive selected from the group consisting of fillers, adhesion promoters, plasticizers and catalysts.

Sealants and potting formulations including polymers produced by the reaction of a polythiol and polyvinyl ether monomer

Composition for producing fuel resistant liquid polythioether polymers with good low temperature flexibility

Composition and method for producing fuel resistant liquid polythioether polymers with good low temperature flexibility

A polythioether includes a structure having the formula I

Compositions and method for producing fuel resistant liquid

Growing community of inventors

Northridge, CA, United States of America

David W Jordan