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Isobornyl Methacrylate / IBOMA

CAS NO. 7534-94-3

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Product Description

Unlock High Hardness & Low Shrinkage for Your Formulations

Bio-Based Monomer | Renewable Carbon | OECD Biodegradable | REACH Compliant

Product Name	Isobornyl Methacrylate (IBOMA) High Tg Bio-Based Monomer \| Reactive Diluent
CAS NO.	7534-94-3
Synonyms	IBXMA, Acryester IBX, Light Ester IB-X, Sartomer SR423 equivalent, Ageflex IBOMA alternative
Formula & Weight	C₁₄H₂₂O₂ \| MW: 222.32 g/mol
Chemical Structure
Technical Specifications	Appearance: Clear colorless liquid Purity (GC): ≥ 99.2% Color (Pt-Co): ≤ 30 Acid Value: ≤ 0.05 mg KOH/g Moisture: ≤ 0.05% Tg (Homopolymer): ~110°C Viscosity (25°C): ~7 mPa·s Inhibitor: 80-120 ppm MEHQ
Packaging	200 kg/drum \| IBC \| ISO Tank \| Customized

Why Choose IBOMA? Solve Your Formulation Challenges

IBOMA features a unique bicyclic isobornyl structure that delivers exceptional performance where standard methacrylates fall short. Its bulky ring structure provides steric hindrance that translates into superior polymer properties.

Your Challenge	How IBOMA Solves It
❌ UV coating scratches too easily	✓ High Tg (~110°C) delivers exceptional hardness & scratch resistance
❌ 3D printed parts shrink/deform	✓ Bulky bicyclic structure minimizes polymerization shrinkage
❌ Acrylic resin viscosity too high	✓ Acts as reactive diluent - reduces viscosity while maintaining Tg
❌ Poor adhesion to PET/PE/PP	✓ Enhanced surface wetting improves adhesion to difficult substrates
❌ Outdoor coating yellows quickly	✓ Excellent UV stability & weatherability for outdoor applications
❌ Need to reduce VOC emissions	✓ Low volatility (<0.1% at 25°C) enables high-solids formulations

Application Scenarios

UV/EB Curable Coatings

As a reactive diluent in UV-curable systems, IBOMA reduces formulation viscosity while contributing hardness, scratch resistance, and weatherability to the cured film.

End Products: Automotive clearcoats, wood finishes, plastic coatings, electronics conformal coatings

Adhesives & Sealants

Functions as tackifier in PSA formulations and enhances cohesive strength in structural adhesives. Provides excellent adhesion to low-surface-energy substrates.

End Products: Industrial tapes, optical adhesives, automotive assembly, medical adhesives

⚡ Powder Coatings

Improves melt flow, leveling, and surface appearance in powder coating formulations. Reduces melt viscosity while maintaining mechanical properties.

End Products: Appliance finishes, architectural coatings, automotive components, furniture

️ UV Inks & Graphic Arts

Enhances pigment dispersion, improves print adhesion on plastic films, and provides abrasion-resistant ink films with excellent color stability.

End Products: UV inkjet inks, screen printing inks, flexo/gravure inks, overprint varnishes

3D Printing & Dental

Critical for dimensional accuracy in SLA/DLP resins due to extremely low cure shrinkage. Also used in dental composites for its biocompatibility and mechanical properties.

End Products: Photopolymer resins, dental crowns & bridges, surgical guides, orthodontic models

High-Solid Acrylic Resins

Enables formulation of low-VOC, high-solid acrylic coatings by reducing solution viscosity without sacrificing glass transition temperature or hardness.

End Products: Industrial maintenance coatings, marine coatings, architectural finishes

Technical Comparison: IBOMA vs. Alternatives

Property	IBOMA	IBOA	MMA	Styrene
Tg (Homopolymer)	~110°C	~94°C	~105°C	~100°C
Cure Shrinkage	Very Low	Low	Medium	Medium
Scratch Resistance	Excellent	Good	Good	Fair
Weather Resistance	Excellent	Excellent	Good	Poor
Hydrophobicity	Excellent	Excellent	Moderate	Good
Cure Speed (UV)	Moderate	Fast	Moderate	Fast
Bio-Renewable Carbon	71%	71%	0%	0%
Volatility / VOC	Very Low	Very Low	High	High

* IBOA (Isobornyl Acrylate) offers faster cure but slightly lower Tg. For applications requiring both speed and hardness, consider blending IBOMA with IBOA.

Sustainability & ESG Credentials

Bio-Renewable Carbon

71%

Derived from pine oil

OECD 301D Biodegradability

70%

Ready biodegradable in 28 days

VOC Emission (25°C)

<0.1%

Enables safer work environments

Regulatory Compliance

✓

REACH Registered, EU market ready

Frequently Asked Questions

Q: What is the difference between IBOMA and IBOA?

A: IBOMA (methacrylate) offers higher Tg (~110°C vs ~94°C), better hardness, and slower cure speed compared to IBOA (acrylate). IBOA cures faster under UV but produces slightly softer films. For optimal balance, many formulators blend both monomers.

Q: What is the typical dosage of IBOMA in UV formulations?

A: As a reactive diluent: 5-20% by weight. As a co-monomer for Tg/hardness boost: 10-40%. Optimal dosage depends on your specific oligomer system and target properties. Contact our technical team for formulation guidance.

Q: Is IBOMA compatible with waterborne systems?

A: IBOMA is highly hydrophobic due to its bicyclic structure. For waterborne applications, it's typically incorporated via emulsion polymerization rather than direct addition. The hydrophobicity actually benefits final film water resistance.

Q: What storage conditions are required?

A: Store in cool, dry, well-ventilated area below 30°C (86°F). Keep containers tightly sealed. Protect from direct sunlight. Contains MEHQ inhibitor - maintain adequate oxygen headspace. Shelf life: 12 months in original sealed packaging.

Q: Can IBOMA replace Sartomer SR423 or Evonik Visiomer IBOMA?

A: Yes. Royalchem IBOMA meets the same industrial specifications (≥99.2% purity) and can serve as a direct drop-in replacement for SR423, Visiomer IBOMA, Ageflex IBOMA, and similar grades. Request a sample for qualification testing.