Non-volatile Content

ASTM D1489-97 Standard test method for non-volatile content of aqueous adhesives. 

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It was also found that the lignin-resol resin adhesives satisfied the JIS requirements for non-volatile content, pH value, viscosity, gel time, and dry and wet adhesion strength. Furthermore, the low temperature curability typically found in amino resin adhesives could also be achieved. Thus, it can be concluded that an effective utilization of lignin is possible with simultaneous improvement of the properties of resol resin adhesives. 

Lacquers for base coating may have non-volatile contents ranging between 30% and 50% w/w, while those for top protection are typically from 20% to... 

D 1489 Test Method for Non-volatile Content Aqueous Adhesives... 

D 4426 Test Method for Determination of Percent Non-volatile Content of Liquid... 

Part 5 gives, in the primer area, information about the type of primer to be used for the different corrodibility categories (classification of environment according to Part 2) and indicates whether the primer is zinc-rich or based on other anticorrosive pigments. For example, ISO 12944-5 requests for a zinc-rich primer a zinc dust content of 80% by mass (m/m) related to the non-volatile content of the primer [5.108]. 

For unknown resins, use several solvents and/or blends which appear at varying points on the chart (see Figure 1). Determine by observation which solvents will dissolve the resin. The non-volatile content should be kept low at the outset so that solubility is not masked by an overload of solute. By increasing the level of solute, the capacity of the solvent for the resin is observable. The viscosity at any solute concentration can be measured, and a cost calculation of the solvents can be made. Using... 

Note that the viscosities and non-volatile contents of the systems should be equal. The viscosities of several pigmented systems studied are essentially equal, but the 2-NP systems dry faster than the 100% alcohol standard. If the systems wetted the substrate equally, the 2-NP systems would flow less because of their faster dry. However, the 2-NP systems flowed further than the standard system. Thus the 2-NP polyamide system wets the substrate better than the standard polyamide system and exhibits better flow even though the dry is faster. 

Reduce ri- dus, - dyiis [ME, to lead back, fr. L reducere, fr. re- + ducere to lead] (14c) v. To add a solvent or thinner to a coating, varnish, resin, latex, or emulsion for the purpose of lowering its viscosity and/or non-volatile content. 

There are many examples in the literature reporting techniques for influencing latex particle size. Unfortunately the studies reported are generally academic in nature and examine dilute homopolymer lattices, which are not generally applicable in the industrial sense. The preparation of concentrated copolymer latices is much more industrially relevant. Techniques are described for the routine preparation of copolymer and terpolymer latices, having between 40-50% non-volatile content, of predetermined particle size between 01-10 mu m. The techniques are suitable for semi-batch processes. 31 refs. 

A thixotropic version with changed viscosity (c 350) and a different non-volatile content... 

The copolymer resins which had exhibited the best results in gluing southern pine plywood were prepared in the same manner as described in preceding paragraphs, however, the non-volatile content was targeted at 45%. A 45% non-volatile content commercial phenolic resin, specifically tailored for particleboard and catalyzed with three parts of resorcinol resin was used as the control. 

To calculate the dry film thickness, one must use the calculated volume pereent non-volatile content to make the eorreetion. The above equation is... 

The reduced solubility of the more stereo regular polymers limits their use in surface coatings prepared from solutions where the non-volatile content is normally very low at application viscosity. Thus, it is normal to carry out polymerisations under conditions which will favour atactic polymers and minimise the propagation of stereo regular structures. 

As initiation and propagation occurs, the temperature of the reactants is allowed to rise to the reflux temperature of the solvent present. The reactants are held at reflux temperature under total reflux conditions, to condense all vapours and return the liquid to the reaction vessel. The latent heat of vaporisation of solvent and monomer helps to dissipate the heat of reaction. The course of the polymerisation is monitored by the measurement of viscosity and non-volatile content. 

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