If you're a formulator in the paint, ink, or industrial coatings sector, sourcing the right Marin Acid Resin – also known as Maleic Modified Rosin Resin, Rosin Modified Maleic Anhydride Resin, or simply 422 Resin – is critical to the performance, durability, and cost-efficiency of your finished products. As a leading Marin Acid Resin manufacturer and supplier from China, we've engineered our MRG-422# grade to solve your toughest formulation challenges, delivering exceptional gloss, hardness, and anti-yellowing properties.
What Is Marin Acid Resin (MRG-422#)?
Marin Acid Resin (CAS No.: 94581-16-5; EINECS No.: 305-515-7) is a pale yellow, transparent solid resin produced via an addition reaction between gum rosin and maleic anhydride, followed by esterification with polyols such as glycerol or pentaerythritol. Its molecular formula is (C₄H₂O₃·C₃H₈O₃)ₙ, and it typically appears as an irregular, pale yellow transparent solid in flake or granular form. The resulting maleic resin is prized for its light color, high softening point, and superb heat stability.
In terms of solubility, Marin Acid Resin is readily soluble in coal tar solvents, esters, vegetable oils, and turpentine; partially soluble in petroleum solvents; and insoluble in alcohols – a key characteristic that distinguishes it from alcohol-soluble rosin derivatives. It also exhibits excellent miscibility with nitrocellulose (NC) and maintains good compatibility with alkyd, phenolic, PU, and acrylic resin systems, making it ideal for a vast range of coating formulations.
typical specifications:
|
Property |
Specification |
|
Color (Gardner, 50% toluene solution) |
≤ 8 |
|
Acid Value (mg KOH/g) |
≤ 30 |
|
Softening Point (Ring & Ball, °C) |
≥ 128 |
|
Solubility in Benzene (1:1) |
Clear |
|
Solubility in Linseed Oil (1:1) |
Complete |
|
Ash Content (%) |
≤ 0.2 |
|
Specific Gravity (20°C) |
~1.06 |
|
Flash Point (°C) |
≥ 260 |
Key Properties That Benefit Your Formulations
Why is Marin Acid Resin for paints and inks such a versatile workhorse? The answer lies in its chemical backbone:
Superior Adhesion: The maleic anhydride structure ensures strong bonding to multiple substrates, reducing delamination.
High Gloss & Hardness: When used in nitrocellulose-compatible resins, it significantly boosts film hardness and surface gloss for a premium finish.
Light Color & Anti-Yellowing: Inherent UV resistance protects color integrity over time, making it perfect for clear varnishes and pale lacquers.
Excellent Nitrocellulose Compatibility: It forms smooth, high-strength films, which is why it's a go-to resin for gravure inks and NC lacquers.
Where Marin Acid Resin Delivers Value
This maleic modified rosin isn’t a one-trick pony. Its broad solubility and compatibility unlock value across diverse applications:
Paints & Industrial Coatings: From alkyd paints to PU coatings and baking enamels, our Marin Acid Resin for coatings enhances hardness, sanding smoothness, and chemical resistance when heat-polymerized with oils. It’s actively specified in tin-printing varnishes where film toughness is non-negotiable.
Printing Inks: As a primary binder in gravure printing inks and offset formulations, it improves pigment wetting, promotes rapid solvent release, and delivers high gloss on packaging substrates. If you’re formulating toluene-based "Type C" inks, this rosin resin for ink is your ideal carrier.
Adhesives & Road Marking: The resin’s strong tackifying properties make it useful in hot melt adhesives and long-lasting road marking coatings. It provides reliable adhesion to both asphalt and concrete.
Wood & Paper Finishes: For wood furniture lacquers and paper overprint varnishes, expect a smooth, high-gloss surface that sands easily—a key requirement for top-tier NC sealer primers.
Market Outlook: A Growing Opportunity
The global marine and protective coatings resin market continues its solid growth path. According to a recent industry report from QYResearch, the market was valued at approximately US$ 605 million in 2025 and is projected to reach US$ 940 million by 2032, climbing at a healthy CAGR of 6.6%. This expansion, driven by infrastructure investment and demand for durable industrial finishes, underscores the rising need for reliable bulk Marin Acid Resin and specialty intermediates.
Why Source Your Marin Acid Resin from Snowhite Chemical?
When you buy Marin Acid Resin wholesale, your supplier’s strength directly impacts your competitiveness. Here’s how SNOWHITE CHEMICAL CO., LTD adds real value:
From-Source Stability&Cost Advantage: Unlike ordinary resellers, we are a professional producer of Maleic Anhydride (MA) — the core upstream raw material that forms the backbone of Maleic Modified Rosin Resin production. By controlling the supply from the ground up, we lock in quality, stability, and competitive Marin Acid Resin pricing for our partners.
Global Reach, Certified Quality: Our ISO, Halal, and Kosher-certified facilities export over USD 50 million in chemicals annually to 50+ countries. Every batch of our MRG-422# resin is rigorously tested by a dedicated R&D and QC team to guarantee consistent specs.
Tailored Support: From standard 25 kg bags to 220 kg zinc-plated drums, we offer flexible packaging. We’re ready to serve as your long-term Marin Acid Resin supplier, delivering exactly what your formulation demands.
Contact Us
Contact SNOWHITE CHEMICAL CO., LTD now to get COA, free samples and the latest quotation.
Email: shirley@snowhitechem.com
Phone: +86-25-56215758
WhatsApp：+86-13776524331
