Raw materials characteristics

Addition Polymers. The most commonly referenced reaction of isocyanates iavolves their addition to polyhydroxyl, polyamine, or polycarboxyhc acid compounds to yield addition polymers. Due to the wide diversity of raw material characteristics and the broad range of functionahty, polyurethane polymers having a wide range of processiag and performance characteristics are available. 

Retrieved Source of formula and raw material data for a non-recursive modelling procedure Formula characteristics Raw material characteristics ... 

There should be a quality assurance system in place that requires revalidation whenever there are changes in packaging, formulation, equipment, or processes that could impact on product effectiveness or product characteristics, and whenever there are changes in product characteristics. Furthermore, when a change of raw materials supplier occurs, the manufacturer should consider subtle, potentially adverse differences in the raw material characteristics. A determination of adverse differences in raw material indicates a need to revalidate the process. 

Another method is to create new formulations by minimization. Here formula cost is optimized against constraints. These constraints are based on finished product characteristics in relation to raw material characteristics. Production constraints relate to raw material properties, existing and new processes as well as productivity in the plant. It is essential to compare formulas and processes in order to optimize productivity by minimizing metering or weighing errors during emulsion... 

When a margarine plant is integrated with a refinery, the raw materials characteristics are generally obtained in the refinery. The quality control in the margarine plant will essentially concentrate on the production parameters and on finished product examination (35). 

Evaluate irtfiuence of both PH and CH on in vitro and in vivo performance. Essential for unifoimity of raw material characteristics, reproducibility of dosage form performance. 

Many factors contribute to the variability of isoflavone contents in foods, including raw material characteristics, extraction and analysis procedures. Soybeans are affected... 

Specification of raw materials used in the manufacture of liquid detergents is critical to controlling process effects. Although some detergents are relatively insensitive to broad fluctuations in raw material characteristics, others are extremely sensitive to minor variability. Apparent in the patent literature, surfactant chemistry can be a critical component. For example, when manufacturing with a surfactant/solvent composition near a phase boundary, a minor change in electrolyte concentration, surfactant composition, and concentration can significantly alter product characteristics. 

Compost Preparation raw materials, characteristics of composts at differents stages, Phase 1 and Phase II. 

As LIMS typically contain both the analysis values and the associated procedures, they hold much potential for integration with other paperless enablers to provide a streamlined paperless operation. Integration with other systems may include, for example, preassignment of analysis when a new batch is started on the plant floor, material status information for MRP II or ERP systems, electronic certificates of analysis for batch documentation, raw material characteristics for dispensing operation and others. It should be noted, however, that integrating LIMS with other paperless enablers outside the laboratory environment is a complex task. 

Storage can be carried out at the place of harvesting, that is, in the forests or on the fields, in transfer storage places or at the point of utilization. The individual configuration and placement of the storage and-if necessary the needed facilities-is dependent on the specifics of the particular utilization chain, especially the environment, the raw material characteristics and the specific harvesting, transport and utilization steps. 

Consider ten standard risk factors to be evaluated by project manager. These factors were identified based on the author s experience and should include Level of innovation, product coverage in the market, forecast complexity, time to market, product shelf life, manufacturing complexity, raw material characteristics, storage and operational requirements, distribution complexity, expected profitability, etc. (detail description of each factor is available in Table 4.10). 

Level of innovation, time to market, product shelf hfe, manufacturing complexity, raw material characteristics, distribution complexity, expected profitability, etc. 

When double-beam instrumentation is used, two cells are needed one for the reference and one for the sample. It is normal for absorption by these cells to differ slightly. This causes a small error in the measurement of the sample absorption and can lead to analytical error. For most accurate quantitative work, optically matched cells are used. These are cells in which the absorption of each one is equal to or very nearly equal to the absorption of the other. Large numbers of cells are manufactured at one time and their respective absorptivities measured. Those with very similar absorp-tivities are designated as optically matched cells. Matched cells are usually etched near the top with an identification mark and must be kept together. It is important for the analyst to understand that even closely matched cells will show small differences in absorption due to differences in raw material characteristics. (The transmission of matched cells will also change due to normal use, so a new cell of the same match code will not necessarily match an older, used cell.) Less commonly used cells (other than the 1 cm type) can be supplied in matched sets of two or four cells. The proper use of matched cells is to fill both the sample and the reference cells with the solvent and run a baseline spectrum, which is stored by the instrument computer system. The sample cell is then cleaned and sample solution put into it, while the reference cell and its solvent are left in place. After measuring the sample spectrum, the baseline is subtracted from the sample spectrum by the computer. This approach will correct for small differences in the cells. It is also important that the sample cell be... 

Methyl Ester Sulfonates Sulfonation Raw Material Characteristics... 

The effectiveness of a blending bed is expressed by the concept of "homogenizing effect" (e), namely, the ratio of the standard deviations of the raw material characteristics on entering and leaving the blending bed respectively thus ... 

Nonwovens are one of the fastest growing textile sectors with diverse applications. These applications have an extensive list, ranging from baby diapers to high performance geotextiles. The essential requirements of these applications are good understanding of the raw material characteristics and process parameters in order to achieve the desired product properties. 

N.E. Mavroudis, V. Gekas, and I. Sjoholm, Osmotic dehydration of apples—effect of agitation and raw material characteristics, J. Food Eng., 55 191 (1998). 

EFFECTS OF THE RAW MATERIAL CHARACTERISTICS OF IRON CONCENTRATES ON BALLABILITY... 

Keywords Iron concentrates. Raw material characteristic, Ballability Abstract... 

The differences of raw material characteristic among six kind of iron concentrates and the influences on ballability were studied from the aspect of the size distribution, specific surface area and particles morphology. The results show that the specific surface area of iron concentrates has crucial influence on ballability, and the eifective method of improving ballability for weak ballability iron concentrate has been found. 

The ballability, roasting characteristic at high temperature and pellet metallurgical properties of different iron concentrates is vary greatly since the differences of raw material characteristic such as the size distribution, the surface properties and structure of particle, and the differences even influence the pelletization and operation of blast furnace [4]. In allusion to the problems above, the characteristics of iron... 

---