Breaking through pain points of UV curing industry! CAS 1137971-16-4 copolymerizable photoinitiator monomer ushers in a new era of low migration and high-performance curing

With the rapid development of UV curing technology, sectors including food packaging, medical devices, cosmetic packaging and high-end electronic coatings have raised higher requirements on low migration, high safety, strong adhesion and weather resistance of cured materials. Conventional small-molecule photoinitiators commonly suffer from residual migration after curing, yellowing, poor aging resistance and insufficient compatibility with resin systems. These defects easily cause secondary contamination, coating delamination and shortened service life, which severely restrict quality upgrading and compliant production of premium UV cured products. To address these long-standing industrial challenges, high-performance copolymerizable photoinitiator monomer CAS 1137971-16-4, 2-(2-(4-benzoylphenoxy)ethoxy)ethyl acrylate, is launched. Featuring unique molecular design and outstanding comprehensive properties, it overcomes the drawbacks of traditional photoinitiators and serves as a preferred core raw material for high-end UV curing systems.

As a new-generation Type II hydrogen-abstraction copolymerizable photoinitiator monomer, CAS 1137971-16-4 differs from conventional small-molecule benzophenone photoinitiators. It is functionalized with polymerizable acrylate double bonds, combining photoinitiation activity and copolymerization capability with resins. At molecular level, it achieves non-residual curing, non-migration in formed films and superior stability. It precisely meets various high-end eco-friendly UV curing requirements and delivers an all-in-one high-performance curing solution for coatings, inks, adhesives and photoresist materials.

Core Product Specifications, Premium Quality Sets Industrial Benchmark

CAS 1137971-16-4 is synthesized via refined process with high purity, extremely low impurities and stable physicochemical properties. Its core parameters are industry-leading, suitable for mass industrial production and customized high-end research:

Full Name: 2-(2-(4-benzoylphenoxy)ethoxy)ethyl acrylate

CAS No.: 1137971-16-4

Product Type: Copolymerizable benzophenone Type II free radical photoinitiator monomer Purity: ≥99%, low harmful impurities, compliant with high-end safety standards

Molecular Characteristics: Contains reactive acrylate double bond and benzophenone photosensitive group, possessing both polymerization reactivity and efficient photoinitiation capacity

Solubility: Readily soluble in common UV monomers and organic solvents. Excellent compatibility with acrylic resins, polyurethane resins, epoxy resins and other mainstream curing systems, no precipitation or phase separation

Stability: Stable under ambient storage, heat and hydrolysis resistant. Cured films have dense network structure with good acid & alkali resistance, aging resistance and anti-yellowing performance

Disruptive Technical Advantages to Solve Key Industrial Pain Points

Benefiting from custom molecular structure, CAS 1137971-16-4 achieves multiple technical breakthroughs and fundamentally solves long-existing technical bottlenecks to support product quality upgrade.

1.Ultra-low migration, satisfying strict safety compliance requirements Traditional benzophenone photoinitiators tend to migrate as small residuals after curing, failing to meet strict safety standards for food contact, medical and infant articles. CAS 1137971-16-4 carries polymerizable double bonds. During UV curing, it participates in crosslinking reaction of resin matrix and covalently anchors into the polymer network, effectively eliminating migration, bleeding and permeation of small molecules. The cured products have no residual contaminants and can satisfy stringent testing standards for food-contact packaging, medical device contact and cosmetic packaging, perfectly matching high-safety application scenarios.

2.Efficient photoinitiation activity to boost curing throughput As a classic hydrogen-abstraction photoinitiator monomer, its photosensitive group maintains stable activity. Its UV absorption band matches mainstream UV curing light sources. Efficient initiation can be realized without large dosage of co-initiators. Fast curing reaction and high crosslink density improve fullness and compactness of coatings and ink layers. It resolves common defects including surface dry but tacky bottom and incomplete curing, greatly improving processing efficiency and adapting to high-speed continuous industrial production lines.

3.Excellent system compatibility for multiple composite formulations The molecule has moderate flexibility and wide polarity adaptability. It works well with acrylate, polyurethane, epoxy and unsaturated resin UV systems, including waterborne UV, solvent-borne UV and solvent-free high solid formulations. It disperses uniformly and copolymerizes stably. Addition will not negatively affect original viscosity, adhesion, gloss or other basic properties of formulations. It optimizes curing uniformity and reduces film defects such as shrinkage cavities, pinholes and loss of gloss caused by poor compatibility of conventional initiators.

4.Weather resistance and anti-yellowing to extend end-product service life Crosslinked polymer network formed by CAS 1137971-16-4 has high molecular bond energy, outstanding UV aging resistance, heat resistance and oxidation resistance. Compared with films cured by conventional photoinitiators, the finished coating is less prone to yellowing, cracking and peeling under long-term service. It improves weatherability and service lifetime of end products, ideal for outdoor coatings, high-end electronic protective coatings and precision component encapsulation requiring long-term stability.

5.Wide process adaptability and remarkable cost reduction benefits This product can be used alone or compounded with Type I / Type II photoinitiators. It is applicable to low-temperature curing, fast curing, thin-film curing and thick-film curing processes. Low loading dosage brings high initiation efficiency. While maintaining excellent curing performance and safety, it cuts raw material cost and defect rate, helping manufacturers achieve high-quality, high-efficiency and low-cost production.

Wide Application Coverage Empowers Quality Upgrade across Industries

With the combined strengths of low migration, high safety, good stability and strong compatibility, CAS 1137971-16-4 has been widely adopted in various high-end UV curing fields as a core functional raw material for product upgrading:

Food & Packaging Printing: UV inks for food packaging, coating for tobacco & wine packages, protective coatings for food containers, laminating adhesives for flexible packaging; prevents migration contamination and complies with food-contact regulations.

Medical & Cosmetic: UV protective coatings for medical devices, cured coatings for cosmetic packaging, surface coatings for infant articles; non-toxic and residue-free with high safety grade.

High-end Electronics: UV encapsulant for electronic components, PCB protective coatings, optical coatings for displays, insulating coatings for precision electronics; dense film, aging resistant and anti-yellowing to guarantee long-term stable operation of electronic parts.

 Industrial Coatings: Outdoor weather-resistant UV coatings, wood varnish, modified plastic coatings, metal protective coatings; enhances film adhesion and weather resistance to extend product life.

Fine Chemicals: High-performance UV adhesives, photoresist intermediates, functional polymer modification materials, suitable for high-precision, high-stability research and industrial manufacturing.

Strict Quality Control & Stable Supply to Support Industrial Development

Backed by mature synthesis process and complete quality control system, CAS 1137971-16-4 is available for mass production. All batches undergo rigorous testing including purity analysis, stability test, migration test and compatibility evaluation to guarantee consistent quality and batch-to-batch repeatability. Multiple packaging options such as 1kg and 25kg are available to meet lab trial, pilot and full-scale production demands. Professional technical support is provided to assist customers with formulation optimization and rapid product validation.

As global environmental and product safety standards keep tightening, low-migration, residue-free and high-performance copolymerizable photoinitiator monomers have become a major trend in UV curing industry. With innovative molecular design, outstanding performance and broad application scope, CAS 1137971-16-4 addresses multiple pain points of traditional curing systems and injects new momentum into high-end UV curing industry upgrade. Going forward, this product will continue to serve fine chemical, advanced manufacturing and new material sectors. With reliable quality, stable performance and professional services, it helps manufacturers develop compliant, high-quality and high value-added end products, leading UV curing technology toward a safer, more efficient and more stable future.