TMDD

AcronymDefinition
TMDDTarget-Mediated Drug Disposition
TMDDTraffic Management Data Dictionary
TMDDTechnology Mission on Dairy Development (est. 1989; India)
TMDDTetramethylenediperoxidedicarbamide (high-order explosive)
References in periodicals archive ?
TMDD and many non-ionic Gemini surfactants should oppose the effects of conventional monomeric surfactants that stabilize foam and, by themselves, should not impart foam stability.
Although TMDD and the new non-ionic Gemini surfactants have proven to provide excellent surfactant properties (both dynamic and equilibrium surface tension reduction) with low foam tendency, there is still a need for more efficient defoamers that can provide surfactant-like wetting performance to reduce or eliminate the tendency to cause surface defects that are often created by silicone containing de foamers.
All these molecules are based on TMDD with its molecular structure shown in Figure 2.
MD3 and TMDD are solids at room temperature and were evaluated as solvent solutions as indicated in the footnotes in Table 1.
For the Gemini materials, TMDD and MD1 have similar values of [beta]/[alpha], while the MD3 material has a [beta]/[alpha] value about an order of magnitude greater.
Although TMDD and some of its modifications have been proven to provide good surfactant properties (both dynamic and equilibrium surface tension reduction) with low foam tendency, there is still a need for more efficient defoamers that can provide surfactant-like wetting performance to reduce or eliminate the tendency to cause coating defects that are often created by silicone defoamers.
MD3 and TMDD are solids at room temperature and were evaluated as solvent solutions, as indicated in the footnotes in Table 1.
As the structure for MD3 shows, it is an acetylenic diol similar to TMDD, but the hydrophobic, alkyl chains on MD3 are one carbon longer than those on TMDD.
In addition, the foam stabilized by those surfactants has about an order-of-magnitude slower rate of decay when compared to that of TMDD. On the other hand, MD3 and 1-decanol did not show any initial foam, even at a very high rate of air injection.
Supplier TMDD SURFYNOL[R] 1Q4 Air Products and Chemicals, Inc.
[E.sub.65] TMDD SURFYNOL[R] 465 Air Products and Chemicals, Inc.
[E.sub.x] refers to TMDD with x% by weight of ethoxylation.