The relative toxicity of polyvinyl acetate (PVA) emulsion dust control material was investigated using laboratory animals. PVA emulsion is a mixture composed of a base latex plasticized with cresyl diphenyl phosphate (Santicizer 140) and tetraethylene gly...
National Technical Information Service (NTIS)
... MATERIALS, POLYMERS, SEPARATION, SUBMARINES, SILICONES, BICARBONATES, CELLULOSE ACETATES, DIOXIDES, ACETATES ...
DTIC Science & Technology
New thermosetting materials were developed for reworkable adhesive applications by introducing acetal ester groups as thermally degradable linkages into maleimide compounds. The synthesis of compounds containing maleimide functionality and acetal ester linkages was conducted by a one-step neat reaction from commercially available ...
NASA Astrophysics Data System (ADS)
Fully and partially pendant acetal group substituted polyvinylphenols were synthesized by the methods of free radical polymerization and chemical modification on polyvinylphenol, respectively. The glass transition temperature (Tg) of the partially acetal-substituted polyvinylphenols is in the range of 135 degrees to approximately 148 degrees Celsius, which ...
... was coded 0300500, Insulation Materials - Acetal Plastics was 0302500, ... manner, Insulation Materials - Acetal Plastics - Arc Resistance would ...
... Accession Number : ADD402903. Title : An automotive material managers guide to acetal thermoplastics. Corporate Author ...
highway deicing material, calcium magnesium acetate (CMA), on the water quality ... magnesium acetate (CMA) under the normal operating procedures of Oregon ...
NASA Website
Molecular glass resists are low molecular-weight organic photoresist materials that readily form stable amorphous glasses above room temperature. They can lead to high resolution patterns. New families of ester acetal molecular glass materials have been created by the reaction between monocarboxylic acid and divinyl ethers. These ...
... Type of: Polymer Material Designation/Trade Name: Fiber cladding, ethylene vinyl acetate Material, Composition: Ethylene vinyl acetate Material, ...
Petroleum-based feedstocks have reached such high prices that interest is increasing in possibly producing oxychemical feedstocks, such as acetic acid, from renewable materials like corn or lignocellulosic biomass. The organism Clostridium thermoaceticum converts glucose or xylose to acetic acid in nearly ...
Energy Citations Database
Synthesis of polymeric schiff bases by reaction of acetals and amine ... Abstract: Synthesis of schiff bases for heat shields by acetal amine reactions ...
A method for rapid diagnosis of wound infection based on gas chromatographic detection of metabolites of anaerobic bacteria is proposed. If acetic acid is present in pathological material from the wounds, bacteriological analysis detects facultative anaerobic bacteria in 71% cases. PMID:10459208
PubMed
A toxicologic and dermatologic review of abietyl acetate when used as a fragrance ingredient is presented. PMID:18845214
... Anbydrides . . . . 20 Acetic-Oxalic Anhydride . * * a 9 . . * . o . . . 21 Bistriphez~1acetic-Oxalic Anhydride . * . * * 22 Diphez ...
... PLASTICS, MECHANICAL PROPERTIES, MATERIALS, CONTAMINATION, ETHYLENES, CELLULOSE ACETATES, FIELD EQUIPMENT ...
The project experimentally investigated using biomass as feedstock for conversion to calcium magnesium acetate (CMA), an alternative road salt. This new organic road salt will prevent corrosion of bridge decks, underground cables, and rusting of cars and trucks. CMA from biomass will reduce costs, compared to petroleum and natural gas for making this ...
A novel cataluminescence (CTL) sensor using nanosized MgO as the sensing material for determination of the trace of vinyl acetate in air was proposed in the present study. Eight catalysts were examined and the results showed that the CTL intensity on MgO nanoparticles was the strongest. Under the optimized conditions, the linear range of the CTL intensity ...
In recent years, many procedures based on surface modification have been suggested to improve the biocompatibility and biofunctionality of orthopedic titanium-based implants. In this contest, the development of a new titanium-based biomaterial that could be covalently modified with biologically active molecules (i.e., RGD-peptides, ...
For good reasons, there has been a spate of articles, much thinking, and a fair amount of industrial action on making chemicals and fuels from methanol. Only methane and methanol are made commercially in over 99% yields from synthesis gas. Methanol promises to be the raw material that may displace ethylene and other petrochemical feedstocks from chemical syntheses. The trend ...
An optical fibre sensor for determination of acetic acid is presented. The sensing probe is based on a fibre Bragg grating (FBG) Fabry-Perot cavity, coated with a thin film of sol-gel-PVP (polyvinylpyrrolidone) composite material. The polymeric thin film renders the interferometric output sensitive to the presence of carboxylic acid ...
A heat storage material to be used for air cooling systems is provided. This heat storage material comprises acetic acid or a mixture of acetic acid and one or more acetates and is further added with at least one anhydrous halide as nucleating agent to prevent supercooling.
Peel bond strength and tensile bond strength between three polyvinylsiloxane denture soft liners and a heat-cured acrylic resin denture base were measured using two adhesive systems. The soft lining materials differed only in regard of their filler content and compliance. The values of bond strength and mode of failure were explained in terms of the ...
... (Author). Descriptors : (*ACETIC ACID, *ACID BASE EQUILIBRIUM), ULTRASONIC PROPERTIES, REACTION KINETICS, DISSOCIATION, IONS ...
... Title : The Interactions of Cellulose Acetate and Ethyl Cellulose Inhibitors with Double-Base Propellants. Descriptive Note : Technical note. ...
Half of U.S. acetic acid production is used in manufacturing vinyl acetate monomer (VAM) and is economical only in very large production plants. Nearly 80% of the VAM is produced by methanol carbonylation, which requires high temperatures and exotic construction materials and is energy intensive. Fermentation-derived ...
DOE Information Bridge
We present a simple method to quantitatively image the dielectric permittivity of soft materials at nanoscale using electrostatic force microscopy (EFM) by means of the double pass method. The EFM experiments are based on the measurement of the frequency shifts of the oscillating tip biased at two different voltages. A numerical treatment ...
A simple model of the gastrointestinal tract is obtained by placing ethyl acetate in contact with water at pH 2 and pH 8 in separate test tubes. The ethyl acetate corresponds to the lipid material lining the tract while the water corresponds to the aqueous contents of the stomach (pH 2) and intestine (pH 8). The compounds aspirin, ...
Vessels for the storage and conveyance of glacial acetic acid are produced from ADO and AD1 aluminum, which are distinguished by corrosion resistance, weldability and workability in the hot and cold conditions but have low tensile strength. Aluminum-magnesium alloys are stronger materials close in corrosion resistance to technical purity aluminum. An ...
LiNi0.5Mn1.5O4 is a potential cathode material for 5 V batteries. This material was prepared by the solid-state redox method using nitrate and acetate based reactants. The precursor material was obtained when the mixture reactants was heated at 500� C for 10 hours and calcined at different ...
The reaction of acrylpimaric acid and several divinyl ether compounds, including 1,3-Bis(2-(vinyloxy)ethoxy)benzene, 2,2-bis(4-[2-(vinyloxy)ethoxy]phenyl)propane, and 1,4-Bis(2-(vinyloxy)ethoxy)benzene, can take place in the presence of organic solvents to form novel ester acetal polymer with the average molecular weight of 4000-6000(Mn) measured by GPC. These polymers can be ...
Polymeric Schiff bases produced in quantitative yields by reaction of acetals of aryl aldehydes with
NASA Technical Reports Server (NTRS)
... materials including polyvinyl chloride, and those copolymers which are predominantly vinyl chloride containing vinyl acetate and vinylidene ...
... Methylenedinitramine (MEDINA) was successfully condensed with glyoxal in acetic anhydride to give a substitute dinitroimidazolidine which shows ...
... 15). These vinylamines are very unstable and decompose readily to acetal- dehyde and the corresponding amine. These ...
... GELS, POROUS MATERIALS, ACIDS, ELECTROLYTIC CELLS, CARBOXYMETHYLCELLULOSE, POLARIZATION, CELLULOSE ACETATES ...
Furfural production by hydrolysis of fibrous plant materials is accompanied by formation of acetic acid in amounts depending on the material used. The amount of acetic formed in the hydrolysis of the fruit shell of oil-tea camellia (Camellia oleosa) (an oilseed-bearing tree) is equal to the amount of furfural. The ...
A water chemistry procedure is used to synthesize titanium dioxide nanoparticles which can later be blended with a polymer to form a nanodielectric. The synthesized nanoparticles are dispersed in two grades of polyvinyl acetal (commercially available under the trade names BX-L and KS-10, manufactured by SEKISUI Chemicals). Nanocomposite materials were ...
The IONSCANTM operating parameters for detection of benzoic acid and acetic acid have been optimized. Various materials and chromatographic coatings were investigated for the vapor preconcentration of benzoic acid, acetic acid and cocaine. Limited field trials indicated a possibility of detecting benzoic acid from seized cocaine ...
Potential reactions evaluations for black polymeric Schiff bases from acetals and amine compounds, considering thermal stabilities.
... Equally ineffective were gummy materials such as the polyvinyl acetate copolymers (bubble gum), or odiferous materials suchas the alkyl ...
Prednisolone Acetate Reference Standard (Control 901) for the Japanese Pharmacopoeia (JP RS) was prepared. The following analytical data were obtained: melting point 236 degrees C (decomposition); IR spectrum was same as that of JP RS of prednisolone acetate; absorptivity at 243 nm E1%lcm = 379; optical rotation [alpha]20D = +113.0 degrees; no impurity was ...
The aim of this study was to test and develop techniques for the detection and identification of volatile compounds released as degradation products by Baltic amber. During a preliminary investigation, the off-gassing of acidic volatiles was detected through the corrosion of lead coupons. The corrosive compounds released by the material were then identified as formic acid and ...
Thin films of La2Zr2O7 (LZO) are highly regarded as possible buffer layers in the coated conductor configuration. This report describes a new synthesis for thin crystalline LZO films, based on a largely water-based solution, mainly containing metal acetates, acetic acid and an organic ...
The principle of chemical amplification has proven to be successful for the design of highly sensitive, high resolution resist materials of both positive and negative tone, respectively. This paper discusses our new approach to a high resolution, aqueous base developable deep-UV negative tone resist. It is based on the acid catalyzed ...
Lithographic properties of a variety of acetal-derivatized styrene based polymers are reported. The structural modifications in the polymers involve varying the size of the pendent acetal moiety. the lithographic performances of the resists containing structurally modified acetals were found to be superior to the ...
Kinetic parameters of acetate oxidation were determined for the sulfate reducers Desulforhabdus amnigenus and Desulfobacca acetoxidans. Based on these parameters, both sulfate reducers seem to be able to outcompete Methanosaeta spp. for acetate in acetate-fed anaerobic bioreactors. Mixed-substrate studies showed ...
PubMed Central
The effect of washing and sterilization on the antimicrobial properties of materials containing silver, copper, and various antibiotics is investigated. Better results were obtained with viscose material than with acetate material. (Author)
The reaction of lignocellulosic material with uncatalyzed acetic anhydride in the absence of any cosolvent is disclosed. The process improves dimensional stability and resistance to biological attack of the lignocellulosic material. Lignocellulosic materi...
... Insulating materials tested were polyethylene, polystyrene, acrylic, nylon-6, acetal, PVC, and teflon. ... a) Polyethylene. b) Teflon. c) Acetal. d) PVC. ...
... Accession Number : AD0784603. Title : Toxicological Evaluation of Polyvinyl Acetate (PVA) Emulsion Dust Control Material, May 1973-March 1974. ...
Dataset Title: The Effect of Calcium Magnesium Acetate (CMA) Deicing Material on Water Quality of Bear Creek, Clackamas County, Oregon, 1999 ...
... Abstract : Recycle of spent acid in nitrolysis of ... and (c) preferably also recycling a part of ... Hexamines, *RDX, *Acetic acid, Recycled materials, Acetic ...
... Accession Number : AD0767256. Title : Fungus Resistance of Polyvinyl Acetate Latex Dust Control Material. Descriptive Note : Memorandum rept.,. ...
... The :ransitions observed using poly(vinyl acetate), poly(t-butyl ... Materials. Poly(vinyl acetate), secondary standard, was obtained from Aldrich: ...
Parlodion in amyl acetate. The two plastic layers are dry-stripped with ... The Mowital (replicating material) which does not dissolve in amyl acetate ...
Rapid detection of food-borne volatile organic compounds (VOCs) such as organic acids and alcohols released by bacterial pathogens is being used as an indicator for detecting bacterial contamination in food by our research group. One of our current research thrusts is to develop novel sensors that will be sensitive to specific compounds (at low operating temperature) associated with food safety. ...
We report here, new non-acetal containing low bake (PEB < 100� C ) resists that are suitable for immersion lithography. These resists are based on novel low activation energy (low-Ea) tertiary ester protecting groups. One major obstacle to imaging in the sub-50 nm regime using chemically amplified resists is the diminished image integrity in the ...
It was found for the first time that citric acid was decomposed to formic acid, acetic acid and lactic acid in the presence of coal ash particles at pH 3 at 20 degrees C, while it was not decomposed at more than pH 5. The yield of organic acid at stirring time of 60 min is in the order of formic acid>acetic acid>lactic acid. Since citric acid ...
Several types of filled cellulose acetate membranes were prepared to determine the effect of filler properties and polymer properties on permeability of the composite materials. Casting procedures were chosen to give a dense cellulose acetate phase and a ...
The physical and chemical characteristics of synthetic polymers are related to the type and ratio of functional groups distributed throughout the polymer. With polyvinyl chloride-acetate copolymers and cellulose esters, acetate comprises the major ester g...
The effects of low-molecular-weight additives, temperature and mechanical action on the structure and properties of starch are discussed. Special attention is given to mixtures of starch with synthetic polymers, e.g., co-polymers of ethylene with vinyl acetate, vinyl alcohol, acrylic acid, cellulose derivatives and other natural polymers. These mixtures can be used in the ...
The copolymerization of propylene with carbon monoxide using a catalytic system based on palladium acetate, modified with the atropisomeric chiral ligand (S)-(6,6{prime}-dimethylbiphenyl-2,2{prime}-diyl)bis(dicyclohexylphosphine), gives poly[spiro-2,5-(3-methyltetrahydrofuran)]. This material is transformed into the isomeric ...
...nitrocellulose-base and cellulose-acetate base film? 1237.30 Section 1237.30 ...nitrocellulose-base and cellulose-acetate base film? (a) The nitrocellulose base...Agencies must handle nitrocellulose-base film (used in the ...
Code of Federal Regulations, 2010
Cost and yield effective IC fabrication requires the use of a large variety of substrates with distinct reflectivity, which may cause problems during the lithographic process either due to reflective notching and standing wave formation on highly reflective substrates, or trapezoidal resist patterns and deterioration of resolution, when a substrate with low reflectivity is employed. Reflectivity ...
Flecainide acetate forms acetic acid solvates with 0.5 and 2 acetic acid molecules. Powder X-ray diffraction, differential thermal analysis/thermogravimetric, infrared, and potentiometric titration were used to determine the composition of solvates. Flecainide acetate hemisolvate with acetic ...
This project seeks to develop a technique, based on coal surface properties, for highly dispersing catalysts in coal for gasification and to investigate the potential of using potassium carbonate and calcium acetate mixtures as catalysts for coal gasifica...
This project seeks to develop a technique, based on coal surface properties, for highly dispersing catalysts in coal for gasification and to investigate the potential of using potassium carbonate and calcium acetate mixtures as catalyst for coal gasificat...
This project seeks to develop a technique, based on coal surface properties, for highly dispersing catalysts in coal for gasification and to investigate the potential of using potassium carbonate and calcium acetate mixtures as catalysts for coal gasification. The lower cost and higher catalytic activity of the latter compound will produce economic ...
Based on the detailed review of the above documents, the NESC Review Team formulated .... The CO2 aerosol cleaning method may avoid issues with solvent cleaning. ..... Were the ethyl acetate, acetone and IPA treated to remove water and other ...... The residue from the acetone cleaning was captured and has ...
Polycyclic benzimidazole derivatives, an important class of compounds in organic electronics and photovoltaics, were prepared using a solvent-free "green" process based on heating carboxylic acid anhydrides and arylene diamines in the presence of zinc acetate in the solid state. Products were isolated and purified directly by train sublimation of the crude ...
This report is the final report on a research program to investigate the technical and economic feasibility of a conceptual process for the conversion of cellulose and hemicellulose in waste materials to higher value chemicals, such as lactic and acetic acids. The conceptual conversion process was based upon previous studies by ...
... These include vinyl-based polymers such as poly(vinyl acetates) and copolymers of vinyl acetate and vinyl chloride as well as epsilon-caprolactone ...
... These include vinyl-based polymers such as polyvinyl acetates and copolymers of vinyl acetate and vinyl chloride as well as C-caprolactone ...
The acetal linkage of perfluorodimeth-oxymethane was the key structural feature of ... Synthesis of polymeric schiff bases by reaction of acetals and amine ...
... (The properties of poly(vinyl acetals) in general ... Oguchi et al. have demonstrated in very thorough studies that poly(vinyl acetals) with linear ...
... and positional isomerization of alkenyl acetates produced by hydrogenation of alkynyl acetates over palladium metal catalyst. J. ... ...
NBII National Biological Information Infrastructure
Aromatic acetals were observed to react with azomethines in a fashion similar ... In Table 4 are contained the experimental data for the simple acetal ex- ...
Far infrared rare earth mineral composite materials were prepared by the coprecipitation method using tourmaline, cerium acetate, and lanthanum acetate as raw materials. The results of Fourier transform infrared spectroscopy show that tourmaline modified with the rare earths La and Ce has a better far infrared ...
