USA As Represented by Secretary of the Navy

Other

Andrew P Chafin

John D Stenger-Smith

Geoffrey Andrew Lindsay

Benjamin G Harvey

William P Norris

Peter Zarras

Richard A Hollins

Matthew C Davis

Kenneth Joseph Wynne

Stephen Fallis

David J Irvin

Michael E Wright

Mark H Mason

Michael D Garrison

William Lai

Arnold T Nielsen

Ronald L Atkins

Nicole Anderson

Joseph W Tsang

Scott T Sackinger

Rena Y Yee

Marion J Roberts

John R Reynolds

Kyukwan Zong

Cynthia K Webber

Heather A Meylemans

Andrew J Guenthner

Alfred J Baca

Ronald A Henry

Melvin H Miles

John D Fischer

James R Hoover

James M Hoover

John W Fischer

Ronald A Henry, Deceased

John Nelson

Richard A Holloins

M Joe Roberts

Geoff A Lindsay

Peter Zaras

Mathew C Davis

Stephen L Christian

This invention describes resins with phosphate cores and a simple, three-step process for their synthesis. Preferred resins are cyanate ester resins with bridging phosphate groups. These resins can be cured to produce thermoset polymers having Ts of between 131 and >360° C. depending on the number of cyanate ester groups per phosphate and the substitution pattern of the aromatic rings. The high char yields of these resins, up to about 67%, coupled with the phosphate core means that these materials will have applications as fire-resistant polymers. Additionally, these materials can potentially be blended with conventional cyanate esters or other compatible thermosetting resins to improve the fire resistance of composite materials. Other applications may include use in fire-resistant circuit boards, or as surface coatings to reduce flammability of conventional composite materials or thermoplastics.

Fire resistant phosphate cyanate esters

A method for making thermosetting polyimides from resveratrol including converting resveratrol to trisaniline, reacting trisaniline with one or more dianhydride and thermosetting endcap to form amic acid, thermally imidizing amic acid to form polyimide oligomer, and cross-linking polyimide oligomer with heat and pressure to generate polyimide thermoset.

Thermosetting polyimides derived from resveratrol

This invention describes resins with phosphate cores and a simple, three-step process for their synthesis. Preferred resins are cyanate ester resins with bridging phosphate groups. These resins can be cured to produce thermoset polymers having Ts of between 131 and &#x3e;360&#xb0; C. depending on the number of cyanate ester groups per phosphate and the substitution pattern of the aromatic rings. The high char yields of these resins, up to about 67%, coupled with the phosphate core means that these materials will have applications as fire-resistant polymers. Additionally, these materials can potentially be blended with conventional cyanate esters or other compatible thermosetting resins to improve the fire resistance of composite materials. Other applications may include use in fire-resistant circuit boards, or as surface coatings to reduce flammability of conventional composite materials or thermoplastics.

The present invention provides a pigment/additive comprising discrete multivalent oxidation state (DiMVO) phenothiazine compounds having corrosion inhibiting properties. These novel DiMVO phenothiazines are useful in preparing waterborne primer coating formulations for application to metals and metal alloys and demonstrating corrosion inhibiting properties. Furthermore, such formulations are chromate-free and have reduced VOC content. Methods of preparing and using such compounds and waterborne formulations also are described.

Waterborne corrosion resistant organic primer compositions

A method for the selective synthesis of bisphenols, thermosetting resins, and thermoplastics from salicylic acid, the major component of wintergreen oil, and a viable target for engineered biosynthesis. Condensation of salicylic acid, structural analogs of salicylic acid, and derivatives of salicylic acid with short chain aldehydes or ketones and subsequent decarboxylation has the potential to produce bisphenols that are direct replacements for conventional resins, while the steric and electronic effects of salicylic acid improve the efficiency and selectivity of the conversion process. The utilization of renewable polyphenols as precursors to epoxies, poly carbonates, and high temperature thermosets including cyanate esters, provides an opportunity to develop full-performance resins while reducing the use of petroleum based feedstocks. This approach will then diminish the overall environmental impact of resin production while allowing for a sustainable source of phenols.

Renewable bisphenols and resins from salicylic acid

A composition and method of preparing and adding unique organic additives to a metal-free coating system followed by application then provides long term corrosion protection to a reactive metal surface.

Corrosion protection by coatings that include organic additives

A new class of polymers based upon the radialene group as the parent repeating group and characterized by the following general formula: 

Omniconjugated conductive polymers and methods for making the same

A benzo-fused-heterocyclic elongated dye having a superior molecular hyperpolarizability and yet having an acceptably-low optical absorbance of light near 1550 nm in wavelength, which is an important optical communication band for telecommunication applications.

Benzo-fused heterocyclic chromophores for nonlinear optical devices

A supercapacitor comprising a poly(3,4-ethylendioxythiophene) (PEDOT) and poly(3,4-propylenedioxythiophene) (PProDOT) as electrode couples for the capacitor and a pair of gel electrolyte layers disposed between the electrodes. The gel electrolytes are separated by a battery paper and are selected from a group consisting of a lithium salt and an organic electrolyte.

Poly (3,4-alkylenedioxythiophene)-based capacitors using ionic liquids as supporting electrolytes

The present invention discloses monomers of structure (IV) wherein 'X' is an alkyl, aryl, or oligoether group, and 'R' is an alkyl, aryl, or oligoether group that is chemically bonded to the Nor Nposition of each of the tetrazole rings. The monomers of the present invention are suitable as binders in energetic compositions.

Di- and multifunctional monomers for producing tetrazole based polymers

A process for making energetic urethane cured binders by making poly-tetrazoles to produce multi-functional tetrazole polyols for producing tetrazole base polymers. Embodiments of the present invention relate generally to a process for preparation of a monomer including reacting an effective amount of nitrile(s) with inorganic azide and a divalent zinc salt in a first solvent, cooling to room temperature producing poly tetrazole purifying the poly tetrazole by recrystallization or precipitation in a second solvent, and reacting an effective amount of the purified poly-tetrazole with a third solvent, a soluble reversible or non-reversible base, and 2-chloro-ethanol, cooling to room temperature producing tetrazole polyol. Embodiments of the present invention further include the monomers produced by the processes described herein.

One-pot process for making multifunctional tetrazole polyols to produce tetrazole based polymers

A process for making energetic cured binders by making poly-tetrazoles to produce multi-functional tetrazole polyols for producing tetrazole base polymers. Embodiments of the present invention relate generally to a process for preparation of a monomer including reacting an effective amount of nitrile(s) with inorganic azide and a divalent zinc salt in a first solvent, cooling to room temperature producing poly tetrazole, purifying the poly tetrazole by precipitation in a second solvent, and reacting an effective amount of the purified poly tetrazole with a third solvent, a soluble reversible or non-reversible base, and 2-chloro-ethanol, cooling to room temperature producing tetrazole polyol.

Process for making multifunctional tetrazole polyols to produce tetrazole based polymers

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Ridgecrest, CA, United States of America

Andrew P Chafin