Anti-Sagging Resin 904R

Name: Anti-Sagging Resin 904R
Brand: LIYANG New Chem

Urethane SCA for metallic automotive and industrial coatings, with unusually good CAB compatibility.

Positioned against Nuplex 90173

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Anti-Sagging Resin 904R identification panel showing model code, chemistry family and the grade it is positioned against

Product Overview

904R is a modified urethane anti-sagging resin containing an extremely fine diurea crystal structure. It is written for automotive and industrial coatings that contain metal pigment: it improves the orientation, adhesion and flexibility of metal pigments substantially, and it is compatible with nearly all paint resins, cellulose acetate butyrate in particular.

Key Benefits

Improves orientation, adhesion and flexibility of metal pigment
Compatible with nearly all paint resins, and specifically good with CAB
Fine diurea crystal structure below 15 microns
Thixotropy 3.5-8 gives sag control without killing flow
Recommended for both metallic and solid colour coatings

At A Glance

Chemistry: Modified urethane anti-sagging resin with diurea crystal structure
Family: Sag Control Agents
Category: Sag Control Resins
Positioned against: Nuplex 90173
Appearance reference: Milky and pale yellow

Who It Is For

Automotive coating formulators using CAB in metallic basecoats
Industrial coating producers running metallic shades

Problems It Solves

Metal pigment orientation that will not hold through flash-off
SCAs that are incompatible with the CAB in a metallic basecoat
Sagging on vertical panels at metallic film build

Application Scenarios

Metallic automotive topcoats built on CAB
High performance industrial metallic finishes
Solid colour coatings needing sag control

Technical Features

Modified urethane resin with minute diurea crystals
48-51 wt% solids measured at 120C for 60 minutes
Amine value below 7 mg KOH/g
Specific gravity 0.97-1.02 at 25C

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.

Appearance	Milky and pale yellow
Solids (120C x 60 min)	48-51 wt%
Thixotropy (23C, 6 rpm / 60 rpm)	3.5-8
Amine value	Below 7 mg KOH/g
Fineness	Below 15 microns
Specific gravity (25C)	0.97-1.02

Use Guide

Recommended for coatings containing metal pigment, and also usable in solid colour coatings.
Check compatibility with the binder in use; the data sheet reports good compatibility with nearly all paint resins and especially with CAB.
Dosage is not published on the source data sheet. Ask for the current recommendation when you request a sample.

Quality Control On Your Side

Flop and orientation measurement on sprayed metallic panels
Sag bar at the target build
Adhesion and flexibility test on the cured film

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.

906S	906S is a higher solids fluid with sub-10 micron structure for gloss critical work; 904R is the metallic orientation and CAB grade.
908R	908R is hydroxy-functional for 2K polyurethane; 904R is urethane modified for metallic orientation.
QK8521	904R is the solventborne route to metallic orientation; QK8521 is the waterborne route.

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