Technical documentation

Molecular Orbital Approach to Substituent Effects in Amine-CO2 Interactions

By:

The effects of substituents at the alpha-carbon atom on the donor properties of primary amines and amino alcohols have been studied. Such substituted amino species have important applications in industrially relevant gas separation processes. Qualitative molecular orbital arguments, along with detailed calculations at the MNDO level of theory, show that upon methyl substitution at the alpha-carbon atom the interaction of the methyl group properties of the amino species. Infrared spectroscopic data supporting the calculations are also described.

Enhanced CO2 Absoprtion of Poly(ionic liquid)s

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Switching the basicity of ionic liquids by CO2

By:

The basicity of several basic ionic liquids is studied quantitatively for the first time, and the basicity of the ionic liquids can be switched repeatedly by bubbling CO2 and N2 through the solution alternately.

Powder Aerosol

US3088874

By:

Daniel c. Geary

Robert D. West

This invention relates to a novel powder aerosol system. More specifically, this invention relates to a novel powder aerosol formulation which enables at least 15 percent by wieght of active powder to be dispensed in a conventional aerosol bomb.

The initial phase (solid or aqueous droplet) of aerosol particles prior to activation is among the critical factors in determining their cloud condensation nuclei (CCN) activity. Single-particle levitation in an electrodynamic balance (EDB) was used to me

By:

Man Nin Chan

Sonia M. Kreidenweis

Chak K. Chan

The initial phase (solid or aqueous droplet) of aerosol particles prior to activation is among the critical factors in determining their cloud condensation nuclei (CCN) activity. Single-particle levitation in an electrodynamic balance (EDB) was used to measure the phase transitions and hygroscopic properties of aerosol particles of 11 organic compounds with different solubilities (10−1 to 102 g solute/100 g water). We use these data and other literature data to relate the CCN activity and hygroscopicity of organic compounds with different solubilities.

Gutter Foam Filter

US7208081

By:

Robert W. Jones

The gutter foam filter elements are generally triangular, four-foot lengths of flexible plastic open-cell foam material placed in and extending the full length of a conventional “K” type or similar roof gutter. The foam filter elements may be inserted within the gutter below gutter spikes. The foam material is an open-pore polyether foam of 10–20 cells per square inch which allows rainwater to travel through the filter while excluding leaves.

Beverage Package and a Method of Packaging a Beverage Containing Gas in Solution

US4832968

By:

Alan J. Forage

William J. Byrne

A beverage package and a method of packaging a beverage having gas (preferably at least one of carbon dioxide and inert (nitrogen gases) in solution has a non-resealable container 1 within which is located a hollow pod 4 having a restricted aperture 7 in a side wall. The container is charged with the beverage 8 and sealed. Beverage from the main chamber of the container enters the pod 4 (shown at 8a) by way of the aperture 7 to provide headspaces 1a in the container and 4a in the pod 4. Gas within the headspaces 1a and 4a is at greater than atmospheric pressure.

Process for the Adhesion of Components with Cyanoacrylate Adhesive

DE3421360

By:

Alfred Dettelbach

Zum Verkleben von porösen und saugfähigen Werkstoffen, wie z.B. Papier, Textilen, soll Zyanakrylatkleber in schaumförmigen Zustand auf die Klebstelle aufgetragen werden.

Damit lassen sich die Vorteile des schnell abbindenden Zyanakrylatklebers auch auf die Verklebung von porösen Werkstoffen übertragen, außerdem ergibt sich eine optimal dünne Fuge bei hoher Abbindegeschwindigkeit bei sparsamem und damit preisgünstigenm Auftrag des Klebers.

Microcapsules for Use in Pressurized Systems

US3839220

By:

Myron Barchas

Active substances are stored in pressurized storage systems encapsulated in microcapsules having internal pressure sucfficient to burst the microcapsules, and thus release the other susbtances, upon removal from the system.

Novel uses of Cyanoacrylate Adhesives - Polycyanoacrylate foams

By:

D. Kotzev

V. Kotzev

Cyanoacrylate polymer foams can be obtained by blending cyanoacrylate monomer with an appropriate solvent and a polymerization initiator. Foaming takes place in seconds at room temperature. Various monomers, solvents and initiators were tested and best performance compositions and ratios were determined. The resultant foams are lightweight and can occupy volume up to 30 times that of the original cyanoacrylate monomer. The onset time and temperature of foaming can be regulated in wide ranges. Odourless foaming compositions were obtained.

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