Acrylic polyol resin MT-7152-80

IntroductionAcrylic polyol resin MT-7152-80 is a hydroxyl-functional polymer designed for high-

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Introduction

Acrylic polyol resin MT-7152-80 is a hydroxyl-functional polymer designed for high-performance coating systems. This article presents key technical data through structured tables covering its properties, formulation guidelines, curing characteristics, and application performance.

1. Basic Physical Properties

Table 1: Fundamental Characteristics

Property	Specification	Test Method
Solid Content	80±2%	ISO 3251
Hydroxyl Value (mg KOH/g)	120±5	ASTM D4274
Viscosity (25°C, mPa·s)	3000-6000	Brookfield RV, spindle 3
Acid Value (mg KOH/g)	≤5	ASTM D4662
Color (Gardner)	≤2	ASTM D1544
Solvent System	Xylene/Butyl Acetate	GC Analysis

2. Curing Performance

Table 2: Crosslinking with Common Isocyanates

Curing Agent Type	NCO:OH Ratio	Dry Time (25°C)	Pencil Hardness	Flexibility
HDI Trimer	1.1:1	4h tack-free	2H	Pass 1mm mandrel
IPDI Trimer	1.0:1	6h tack-free	3H	Pass 2mm mandrel
TDI Adduct	1.2:1	2h tack-free	H	Pass 3mm mandrel

3. Coating Formulation Guidelines

Table 3: Typical Industrial Formulations

Component	Automotive Refinish (%)	Industrial Coatings (%)	Plastic Coatings (%)
MT-7152-80	60-70	50-60	40-50
Curing Agent	20-25	15-20	10-15
Additives	2-3	3-5	2-4
Solvents	5-15	15-25	30-40
Pigments	0-10	5-20	5-15

4. Performance Characteristics

Table 4: Cured Film Properties

Property	Test Method	Typical Result
Gloss (60°)	ASTM D523	≥90
Adhesion (Cross-cut)	ISO 2409	0-1
Impact Resistance	ASTM D2794	50kg·cm direct
Chemical Resistance	MEK Double Rubs	≥200
Weather Resistance	QUV-B 1000h	ΔE<2.0

Key Features

Excellent UV durability and color retention

Balanced hardness/flexibility for multi-substrate adhesion

Good compatibility with most polyisocyanate crosslinkers

Suitable for high-solids formulations (up to 70% NV)

Recommended Applications

Automotive OEM and refinish coatings

Industrial maintenance paints

Plastic component coatings

High-end decorative finishes

Processing Considerations

Optimal application viscosity: 80-120 sec (DIN4 cup)

Recommended cure schedule: 20min@80°C or 7d@25°C

Pot life (mixed): 4-6 hours at 25°C

Disclaimer: The above content is for reference and communication only among industry insiders, and does not guarantee its accuracy or completeness. According to relevant laws and regulations and the regulations of this website, units or individuals who purchase related items should obtain valid qualifications and qualification conditions.

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