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Mixed Etherified Melamine Resin

IntroductionThis category of products is mainly made by reacting butanol, methanol in a certain

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Contenido

Introduction

This category of products is mainly made by reacting butanol, methanol in a certain proportion with hydroxymethyl melamine. It has the comprehensive advantages of methyl ether and butyl ether resins, namely excellent flexibility, weather resistance, water resistance, chemical resistance, popularity, and adhesion. It can crosslink with alkyd resin, polyester resin, acrylic resin, epoxy resin, polyurethane, and cellulose, and is used to prepare oil-based, water-based, and solvent-free baking paints.

MT 3168Colorless, viscous liquid≥982000-4500≤0.1Strong adhesion, used for automotive baking paint
MT 3130Colorless, viscous liquid≥963000-6000≤0.1Used for high solid content coatings and electrophoretic coatings
MT 3133Colorless, viscous liquid≥96800-2000≤0.1Used for high solid content coatings, with good adhesion and flexibility

Mixed Etherified Melamine Resin: Technical Overview

Mixed etherified melamine resins are versatile crosslinking agents widely used in coatings, adhesives, and composite materials. The following tables present key technical information:

1. Basic Characteristics

PropertyEspecificaciones
Chemical CompositionMelamine-formaldehyde with mixed alkoxy groups (methoxy/butoxy)
AparienciaColorless to pale yellow viscous liquid
SolubilidadSoluble in most organic solvents
Etherification Degree30-50% methoxy, 50-70% butoxy
Viscosity (25°C)500-3000 mPa·s

2. Performance Advantages

FeatureBenefit
Curing FlexibilityWide curing temperature range (100-180°C)
Substrate CompatibilityExcellent adhesion to metals, plastics
Film PropertiesHigh hardness with good flexibility
Storage Stability12+ months shelf life at room temperature

3. Comparison with Other Melamine Resins

ParameterMixed EtherifiedMethylatedButylated
Curing TemperatureModerateHighLow
FlexibilityExcellentPoorGood
Solvent CompatibilityBroadLimitedBroad
Cost EfficiencyBalancedHighModerate

4. Typical Applications

IndustryApplication Examples
Automotive CoatingsClearcoats, primer surfacers
Industrial CoatingsAppliance finishes, coil coatings
Wood CoatingsFurniture varnishes, flooring
AdhesivesHigh-performance bonding systems

5. Formulation Guidelines

ComponentFunctionRecommended %
Base ResinPrimary film former50-70%
Mixed Etherified ResinCrosslinker15-30%
CatalystCure accelerator0.5-2%
AdditivesFlow modifiers, etc.1-5%

6. Processing Conditions

ParameterRecommended Value
Mixing Temperature25-40°C
Curing Temperature120-160°C
Curing Time15-30 minutes
Film Thickness20-50 μm

7. Limitations & Solutions

ChallengeSolution
Moisture SensitivityUse sealed containers
Limited UV ResistanceCombine with UV absorbers
Viscosity ControlAdjust with solvents

Conclusion

Mixed etherified melamine resins offer an optimal balance between curing performance and film properties, making them particularly suitable for applications requiring both durability and flexibility. Their versatile nature allows for use in various coating systems while maintaining good storage stability and processing characteristics.

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