Nonvolatile content

Specific gravity, max % Methanol by weight, min Nonvolatile content, g/100ml, max Odor... 

Nonvolatile Content. Det nonvolatile content in accordance with ASTM D1353 except that specimen shall be 500ml (see Vol 6, p E158-L)... 

The toluene solution of the product of hydrolytic condensation with pH of the nonaqueous solution not lower than 5 and the nonvolatile content of 40 3% is sent for completion into collector 14 the toluene solution of the product of hydrolytic condensation with pH of the nonaqueous solution lower than 5 and the nonvolatile content of less than 37% is sent into tank 15 for additional flushing and partial distillation of the solvent. The additional flushing in the tank is carried out with the solution of sodium chloride (like the second flushing) then the contents of the tank are heated to 40-60 °C and held for 2-10 hours. The bottom layer, the settling products, is poured off and collected in collector 16. Then a vacuum is created in the tank (the residual pressure is 0.05-0.07 MPa) and the solvent is partially distilled (until the nonvolatile content is 40+3%). The distilled solvent vapours are condensed in cooler 17 and collected in collector 18. If the moisture content is above 1.5%, the solvent is sent into collector 16 for subsequent additional drying. The toluene solution of polymethylsilsesquioxane is poured from receptacle 14 or tank 15 into balancing tank 19, where several batches of varnish are mixed and balanced. The finished varnish is analysed to determine the nonvolatile content, pH of the nonaqueous solution, viscosity and gelatinisation time. 

The distillation of the solvent (the mixture of toluene and butanol) is carried out in a tank at a temperature not exceeding 50 °C and a residual pressure of 460 70 GPa. The distillation is considered complete when the nonvolatile content is 30-50%. The finished varnish is cooled in the distillation tank to 40 °C and analysed for the content of solid residue, alkali, silicon and iron. 

ASTM has developed a Standard Guide for Testing Epoxy Resins, which covers several procedures that can be conducted on the same starting sample (e.g., viscosity, color, and density). Other contents of the standard include test methods for nonvolatile content, acid value, epoxy content, hydrolyzable chlorine, and total chlorine. The most important of these test methods are described below. 

ASTM D 1489 offers a test method for determining the nonvolatile content of aqueous adhesives. The solids content (or conversely the volatile content) is a measurement of the actual nonvolatile materials that are contained within the formulation. Addition of solvent can be used to correct the viscosity of adhesives or sealants to account for variability in the manufacturing process or inconsistent base materials in the resin formulation. 

Appearance Opaque, light tan liquid Ionic nature Nonionic Nonvolatile content 25-27%... 

In many cases, limits exist which also narrow the search. There may be a maximum limit on solvent cost or viscosity, a minimum on nonvolatile content, and so on. As an example, a vinyl resin copolymer (Bakelite vinyl resin VYHH) was evaluated for solubility. The only... 

It is interesting that the systems containing acrylic polyols are readily dispersed in water after the neutralisation of -COOH groups with ammonia or with dimethylethanolamine [2]. The hydroxyl content is around 2-4% and the nonvolatile content around 40-45%, somtimes a cosolvent such as butyl glycol or naphtha (0-10%) is used. The viscosity of this kind of dispersion is low, around 200-1500 mPa-s at 25 °C. 

Table V distributes U.S. shipments of industrial finishes into eight end-use areas for 1980-82, with projections to 1987. Declines in gallonage are indicated in markets for metal, wood, and transportation finishes. However, some of this is due to the projected greater use of high-solids (HS) finishes overall, consumption of IF by dry gallon is expected to be about the same from 1982 to 1987, since the average nonvolatile content by volume is expected to increase from 40% to about 50%. Can coatings will be affected by state returnable-container laws, the upsurge in the use of glass bottles, and the growth of plastic containers for soft drinks.

Coatings are up to 60% NV (nonvolatile content by weight) with unlimited solvent use. 

Because protective coatings for automobiles was a tremendous market, other competitive finishes challenged nitrocellulose. The advent of alkyd resins in the 1930s was prophesied to sound the death knell of nitrocellulose finishes because of the advantages alkyd-amine finishes showed in higher nonvolatile content improved exterior durability, and lower solvent costs. The type of thinking that produced this prophecy led to two... 

Solvents undesirable 1940-45 Low nonvolatile content 1945-50 Cost of volatile portion 1950-55 Sensitivity to alcohol and cosmetics... 

Then, if necessary, the residual monomer may be stripped out by steam distillation. The resulting product is a smooth, creamy dispersion with particle diameters between 2 and 6 fan. The nonvolatile content of the dispersion is approximately 58%. 

Although the primary purpose of this chapter is to discuss mechanical testing and strength of adhesive joints, the reader should be aware that ASTM covers a wide variety of tests to measure other properties. ASTM, for example, includes standard tests to measure the viscosity of uncured adhesives, density of liquid adhesive components, nonvolatile content of adhesives, filler content, extent of water absorption, stress cracking of plastics by liquid adhesives, odor, heat stability of hot-melt adhesives, ash content, and similar properties or features of adhesives. 

Because of the unique properties of pressure-sensitive adhesives, special tests not applicable to other types have been developed. While standard physical tests such as nonvolatile content, viscosity, and specific gravity are performed to ensure consistency of application, these tests do not predict adhesive performance. For pressure-sensitive adhesives, three critical performance characteristics are usually measured tack, peel, and shear strength. 

Standard Test Methods for Liquid Paint Oriers Standard Test Methods for Nonvolatile Content of Resin... 

Standard Test Methods for Nonvolatile Content of Varnishes Standard Guide for Analysis of Electrocoat Bath Samples Standard Test Method for Identification of Oils and Oil Acids in Solvent-Reducible Paints... 

Standard Test Method for Determination of the Pigment Content of Solvent-Reducible Paints by High-Speed Centrifuging Standard Guide for Determining Volatile and Nonvolatile Content of Paint and Related Coatings... 

MIAK is a retarder solvent, having an evaporation rate of 0.5, but it olso possesses exceptional salvent power far most film-farmers. In lacquers, the law evaporation rate of MIAK promotes good flow and leveling properties whereas the high solvency provides low viscosities or permits a higher nonvolatile content. 

The nonvolatile content of a halogenated solvent is determined by drying flic sample in a platinum evaporating dish at 105"C. Depending on boiling point and the concentration of nonvolatile matter three alternate procedures are proposed. 

The extension process illustrated in Fig. 3 occurs readily at 110°C in the presence of 0.04% stannous octoate (based on nonvolatile content of the charge). The completion of the extension process can be considered to be the equivalent of the elimination of flaws in the molecule. The numbers along the curve in Fig. 3 refer to moles of diisocyanate which must be reacted to complete a mole of ABA block pol3nner. 

For example, if a conventional solvent-bome auto basecoat used in 1970 had a nonvolatile content by volume (NW) of 30%, then a basecoat used in 1980 at an NW of 45% may have been called a HSSB basecoat [4(k)]. However, by 1990 it is doubtful that a NW of 45% would be called HSSB, and a IWV value of 55% might be needed to quahty as HSSB. 

Nonvolatile Content of Urea-Formaldehyde Resin Solutions, Test for [Pg.788]

The percent solids measured in this way is an indirect measurement of the amount of volatile material in the sample that was driven off during the heating cycle. ASTM D1489 offers a test for determining the nonvolatile content of nonaqueous adhesives. 

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