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High transparency and excellent optical clarity for precision coating applications.
Superior weather resistance with outstanding UV stability and minimal yellowing over time.
Good solvent compatibility with common organic solvents including esters, ketones, and aromatic hydrocarbons.
Low molecular weight distribution enabling smooth film formation and enhanced leveling performance.
Excellent adhesion to various substrates including PET, PMMA, and aluminum without primer.
Optical-grade protective coatings for display panels and touchscreens.
Anti-glare and hard-coat layers in automotive interior trim and instrument clusters.
UV-curable and solvent-based topcoats for decorative laminates and signage films.
Functional resin component in high-gloss decorative films for architectural and appliance surfaces.
Base resin for specialty release liners requiring dimensional stability and low extractables.
| Chemical Type | Acrylic copolymer (methyl methacrylate / butyl acrylate / functional monomer) |
| Product Form | Solvent solution (typically in methyl ethyl ketone or toluene) |
| Appearance | Clear, colorless to pale yellow liquid |
| Solids Content | 30–35 wt% (as supplied) |
| Viscosity (25°C) | 15–25 mPa·s (Brookfield DV-II+ viscometer, spindle #2, 60 rpm) |
| Glass Transition Temperature (Tg) | ~85°C (DSC, 10°C/min, second heat) |
| Primary Applications | Optical coatings, decorative laminates, functional surface films |
| Key Features | High transparency, UV resistance, substrate adhesion, film toughness |
Q1: What is the primary function of LR-7747 in coating formulations?
A: LR-7747 is a specialty acrylic resin designed to act as a rheology modifier and film-forming aid, enhancing viscosity control, sag resistance, and final film clarity in solvent-borne and high-solids industrial coatings.
Q2: Is LR-7747 compatible with common crosslinkers used in thermosetting acrylic systems?
A: Yes — LR-7747 exhibits good compatibility with melamine-formaldehyde and urea-formaldehyde resins, as well as with isocyanate-based curing agents, enabling its use in ambient- or heat-cured high-performance coating systems.
Q3: How should LR-7747 be incorporated into a formulation to ensure optimal performance?
A: It is typically added during the let-down stage under moderate agitation. Pre-dilution in a compatible solvent is recommended to avoid localized gelling, and incorporation at temperatures between 20–40 °C helps maintain dispersion stability.
Q4: Does LR-7747 contribute to improved substrate adhesion in automotive or metal finishing applications?
A: Yes — its molecular architecture promotes strong interfacial interaction with metallic substrates and enhances cohesive strength in the cured film, supporting durable adhesion performance in demanding OEM and refinish environments.
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E-mail: wangxingqiang@ericwchem.com
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