QK8330 Waterborne Rheology Control Agent

Name: QK8330 Waterborne Rheology Control Agent
Brand: LIYANG New Chem

Modified polyamide salt that orients effect pigments and stops settling in waterborne automotive and industrial coatings.

Positioned against DISPARLON 633E

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QK8330 Waterborne Rheology Control Agent identification panel showing model code, chemistry family and the grade it is positioned against

Product Overview

QK8330 is a modified polyamide salt used to control the orientation and settling of effect pigments in waterborne coatings. It lifts the brightness of solvent-free effect pigment slurries and reduces mottling and cloud patches, while having far less impact on system viscosity than polyurethane or acrylic thickeners.

Key Benefits

Improves effect pigment orientation, so metallic and pearl panels read evenly
Reduces cloud patches, mottle and colour variation across a sprayed panel
Raises brightness of solvent-free effect pigment slurries
Very little effect on the viscosity of the coating compared with polyurethane and acrylic agents
Good thixotropy and settling resistance in both storage and application

At A Glance

Chemistry: Modified polyamide salt
Family: Rheology Control
Category: Coating Additives
Positioned against: DISPARLON 633E
Appearance reference: Pale yellow paste

Who It Is For

Automotive refinish and OEM coating formulators working in water
Producers of waterborne effect pigment concentrates
Industrial coating plants adding a metallic line

Problems It Solves

Mottling and cloudiness in waterborne metallic basecoats
Effect pigment settling in slurry during storage
Viscosity climbing out of the spray window when a conventional thickener is used to fix orientation

Application Scenarios

Waterborne automotive basecoats with aluminium or pearl pigment
Waterborne industrial coatings with a metallic finish
Solvent-free effect pigment slurries made for tinting

Technical Features

20% non-volatile content in a propylene glycol methyl ether / water carrier
Slightly acidic product; account for it when balancing system pH
Temperature sensitive: must be stored and transported below 45C
Dispersion is assisted by amine already present, so no separate dissolution step is required

Specification

Typical Data And Dosage

Typical values are indicative of the product and are not release specifications. Figures are reproduced from the manufacturer data sheet.

Chemical composition	Modified polyamide salt
Appearance	Pale yellow paste
Non-volatile content	20%
Solvent	Propylene glycol methyl ether / water
Reaction	Slightly acidic
Storage and transport	Below 45C
Packing	50 kg plastic drum

Recommended Dosage

All dispersant and additive dosage figures below are quoted exactly as the source data sheet quotes them. Dispersant figures are percentages on pigment weight, not on the total batch. The published values are empirical, so confirm the optimum with a dosage ladder in your own system.

On total formulation, as supplied	1-5%

Use Guide

Amine present in the system helps QK8330 disperse directly, with no dissolution or polymer pre-treatment step.
Pre-blend water and QK8330 at a 4:1 ratio; the blend can be added at any stage.
Keep storage and transport below 45C.

Quality Control On Your Side

Check system pH after addition, since the product is slightly acidic
Assess orientation on sprayed panels rather than by viscosity alone
Confirm dosage with a ladder across the 1-5% range

Comparison

How It Compares With The Alternatives

Technical comparison against other ways of solving the same problem. Nothing here is a performance claim against a named commercial product.

Polyurethane thickener	Improves orientation with far less effect on the viscosity of the whole system.
Acrylic thickener	Better thixotropy and settling resistance during storage and application.
QK8521	QK8330 is a polyamide salt; QK8521 is an EVA wax emulsion. Both orient effect pigment in water, with different pH handling.

Customisation And Supply

Packing as published on this page; other pack sizes are confirmed per order
Technical data sheet and, where available, safety data sheet supplied by email on request
Tailor-made products can be discussed; send the property you need and the system it goes into
Shipped from Tianjin, China by sea or air

Questions