Q: Which epoxy resin for anti-corrosion primers?

E51 (bisphenol-A epoxy, EEW ~190) is the workhorse for general anti-corrosion primer formulation, paired with polyamide or polyamidoamine hardeners. For chemical-resistance-critical applications, epoxy novolac (EPN-1138, EEW ~175) gives superior performance against acids and solvents at the cost of formulation flexibility.

Q: What hydroxyl value should I target for a 2K PU topcoat?

For high-performance 2K PU automotive and industrial topcoats, hydroxyl-acrylic resins typically run OH value 80–150 mg KOH/g, paired with HDI biuret or trimer at NCO/OH ratio 1.05–1.15. Lower OH gives softer, more flexible films; higher OH gives crosslink density for chemical resistance.

Q: Can I use the same resin for solvent and waterborne formulations?

Generally no. Waterborne acrylic emulsions are colloidal stable particles; solventborne acrylic solutions are dissolved polymer chains. The same monomer ratio polymerized in different ways gives very different viscosity, drying, and film-formation behavior. Choose resin form (emulsion / solution / solid) up front based on carrier system.

Q: Do you supply resin TDS with full physical-chemical specs?

Yes — every resin TDS includes solids %, viscosity at 25 °C, MW (Mw, Mn, Mw/Mn), Tg, hydroxyl value or acid value, EEW where applicable, color (Gardner or APHA), and density. Storage stability and shelf life clearly documented. Full SDS in English and Chinese.

Question 1

What's the difference between long-oil and short-oil alkyd?

Accepted Answer

Long-oil alkyd (60%+ oil content) gives softer, more flexible films with slower drying — good for exterior architectural and brushed application. Short-oil alkyd (<40% oil) dries faster, harder, with better chemical resistance — used in industrial finishes and primers. Medium-oil sits in between for general-purpose enamels.

Question 2

Which epoxy resin for anti-corrosion primers?

Accepted Answer

E51 (bisphenol-A epoxy, EEW ~190) is the workhorse for general anti-corrosion primer formulation, paired with polyamide or polyamidoamine hardeners. For chemical-resistance-critical applications, epoxy novolac (EPN-1138, EEW ~175) gives superior performance against acids and solvents at the cost of formulation flexibility.

Question 3

What hydroxyl value should I target for a 2K PU topcoat?

Accepted Answer

For high-performance 2K PU automotive and industrial topcoats, hydroxyl-acrylic resins typically run OH value 80–150 mg KOH/g, paired with HDI biuret or trimer at NCO/OH ratio 1.05–1.15. Lower OH gives softer, more flexible films; higher OH gives crosslink density for chemical resistance.

Question 4

Can I use the same resin for solvent and waterborne formulations?

Accepted Answer

Generally no. Waterborne acrylic emulsions are colloidal stable particles; solventborne acrylic solutions are dissolved polymer chains. The same monomer ratio polymerized in different ways gives very different viscosity, drying, and film-formation behavior. Choose resin form (emulsion / solution / solid) up front based on carrier system.

Question 5

Do you supply resin TDS with full physical-chemical specs?

Accepted Answer

Yes — every resin TDS includes solids %, viscosity at 25 °C, MW (Mw, Mn, Mw/Mn), Tg, hydroxyl value or acid value, EEW where applicable, color (Gardner or APHA), and density. Storage stability and shelf life clearly documented. Full SDS in English and Chinese.

Resins

How to Choose Resins

Binder Family

MW & Tg

Functional Group Profile

Solvent / Carrier System

Industries Served

Browse Resins (71)

1,3-Propanediol (PDO)

1,4-Butanediol (BDO)

1,6-Hexanediol (HDO)

Acrylic Polyol Resin AP-6080

Acrylic Solution Resin A-870

Acrylic-Modified Alkyd Resin AA-50

Alkyd Resin Long Oil 65%

Alkyd Resin Medium Oil 50%

Alkyd Resin Short Oil 55%

Benzoguanamine Formaldehyde Resin BG-65

C5 Aliphatic Hydrocarbon Resin

Castor Oil (Industrial Grade Polyol)

Cellulose Acetate Butyrate CAB-381-0.5

Chlorinated Polypropylene Resin AG30 (Coating & Ink Binder)

Chlorinated Polypropylene Resin EG40M (28–35% Cl, Dry Lamination)

Chlorinated Rubber CR-20

Chlorosulfonated Polyethylene CSPE-40 (Hypalon-type)

Epoxy Ester Resin EE-55 (Air-Dry)

Epoxy Hardener AW-106 / HV-953U (Polyamidoamine)

Epoxy Novolac Resin EPN-1138

Epoxy Resin E-20 (Solid Grade)

Epoxy Resin E-44 (Bisphenol-A)

Epoxy Resin E-51 (Bisphenol-A)

Hydroxyl Acrylic Resin HA-6060

Ketone-Aldehyde Resin CY-80

Maleic Anhydride-Modified Rosin MAR-80

Melamine Formaldehyde Resin MF-80

Nitrocellulose Cotton E-Grade (Wet IPA)

Nitrocellulose RS 1/2 Second

PVDF Fluorocarbon Dispersion 60%

Phenolic Resin Resole PF-200

Polyacrylate Dispersion AD-120 (Waterborne)

Polyacrylate Resin Solution PA-600

Polyamide Resin DT501 (Co-solvent, Gravure Ink Binder)

Polyamide Resin DT501H (Co-solvent, High Adhesion)

Polyamide Resin DT508 (Co-solvent, Heat Resistant)

Polyamide Resin DT556 (Co-solvent, Untreated Film Printing)

Polyamide Resin DT588 (Co-solvent, High Gloss)

Polyamide Resin DT610 (Alcohol Soluble, Nitrocellulose Compatible)

Polyamide Resin DT610A (Alcohol Soluble, Modified)

Polyamide Resin DT610H (Alcohol Soluble, Heat Resistant)

Polyamide Resin DT6245 (Alcohol Soluble, Fast Dry)

Polyester Polyol PE-2095

Polyurethane Dispersion WD-220

Polyurethane Resin Solution PU-3030

Polyvinyl Acetate Dispersion PVAc-50

Pure Acrylic Emulsion PA-30

Rosin Pentaerythritol Ester PE-100

Resins FAQ