Interfacial activity
One of the main functionalities
of Hybrane® is its interfacial activity, which can be utilized in various
applications areas some of which are described below.
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In laundry detergents Hybrane® interacts with hydrophobic substances or solid
(dirt) particles and functions as a surfactant or as anti-redeposition aid.
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The interfacial activity of certain Hybrane® provides benefits in oilfield
drilling fluids, where Hybrane® can act either as an emulsifier or demulsifier.
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In adhesives, coatings and inks, Hybrane® functions as an adhesion
promoter.
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The interfacial activity of Hybrane® is used in dispersions of solid materials
where Hybrane® interacts with the particle surface and functions as a
dispersing aid.
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The end groups of particular Hybranes interact with certain types of crystal
nuclei. In this way Hybranes have a pronounced effect on crystal formation
from solutions or melts. This has led to the application of Hybrane® as a
kinetic gas hydrate inhibitor in the oilfield industry. Furthermore, it has
been shown that Hybrane® can effect crystallization of certain waxes.
Reactivity
By tailoring the end groups of Hybrane®, they can be
used as a reactive additive or cross-linker in various resin formulations.
Interaction and rheology
Hybrane® shows a specific interaction
with starch formulations. Although the exact mechanism has not been unraveled
yet, it has been observed that Hybrane® changes the rheology of starch based
formulations. This has led to the application of Hybrane® in starch-based
paper coating formulations where it prevents misting at high coating speeds.
The same performance is also utilized in starch based adhesives.
