Resins, especially abrasive resins, play a key role in the preparation of color paste. 1. Participate in the dispersal and anchoring of pigments. 2. Take part in maintaining the stability of pigment particles that have been dispersed and isolated. What are the options for resin dispersants?

The effect of resin, everyone can see through some experiments, such as long oil alkyd resin, polyamide resin, amino resin, aldehyde, ketone resin, low relative molecular mass of hydroxyl acrylic resin, to paint good wetting ability, and low hydroxyl value acrylic resin, thermoplastic acrylic resin, high molecular weight polyester resin, High molecular weight saturated polyester resin, vinyl copolymer resin, polyolefin resin and other pigments showed poor wettability. The same pigment, in different resin system obtained different hue. Almost all carbon black and organic pigments and transparent iron oxide change their hue with different resin systems, especially the scattered hue. Therefore, choose the right resin dispersant, not only used to disperse and stabilize the pigment, but also used to adjust the pigment to achieve the correct color we need, such as blackness, transparency, 45° color light and so on.

Therefore, the coordination of dispersant and resin, including: compatibility (sampling test, check compatibility after removing the solvent)

Determination of viscosity reduction behavior of pigment by dispersant in the resin system (rotary viscometer test)

Dispersant in the resin system to determine the color development behavior of pigment (scratch coating colorimetric)

Storage stability (flow plate method)

When the resin system changes, the dispersant performance will change accordingly. This variation requires testing to determine.

In general, it is not easy to summarize a simple application principle. For resin systems with pigment factors, the choice of dispersant becomes too parametric. Therefore, the properties of pigment filler must be considered at the same time.

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