Thermoset Composites
Comprehensive curing systems and organic peroxide initiators for unsaturated polyester, vinylester, and (meth)acrylate resin applications. Perodox® brand products deliver reliable performance for FRP, gel coats, and composite manufacturing.
Reliable curing solutions for composite manufacturing
At Shandong Do Sender Chemicals, we manufacture a full spectrum of organic peroxides under the Perodox® brand, serving as initiators, curing agents, and crosslinking agents for the global thermoset composites industry.
Our ISO 9001-certified production facilities in Zibo, Shandong, combine advanced process control with rigorous quality testing to ensure every batch meets the demanding requirements of unsaturated polyester resin (UPR) curing, vinyl ester systems, and (meth)acrylate polymerization.
From room-temperature MEKP cure systems to high-temperature peroxide initiators, we offer tailored solutions with global temperature-controlled logistics and full UN 5.2 dangerous goods compliance.
Learn more about our company →
Applications
Our organic peroxides serve a wide range of thermoset composite and polymer manufacturing processes.
Unsaturated Polyester Resin (UPR) Curing
Room-temperature and elevated-temperature curing systems for UPR-based composites, including FRP boats, tanks, pipes, and automotive body panels.
Gel Coats & Top Coats
Peroxide initiators optimized for gel coat formulations that demand rapid cure, low porosity, and excellent surface finish in marine and sanitary ware applications.
Vinyl Ester Resin Systems
High-performance curing for vinyl ester resins used in chemical-resistant FRP equipment, corrosion barriers, and infrastructure rehabilitation.
Acrylic Resin Polymerization
Initiators for (meth)acrylate monomer polymerization, producing solid surface materials, dental composites, and specialty acrylic cast sheets.
Continuous Lamination
Fast-cure peroxide systems for continuous panel and sheet production, delivering consistent gel times and high throughput in automated processes.
Filament Winding & Pultrusion
Tailored initiator blends for filament winding and pultrusion of FRP pipes, poles, and structural profiles with precise exotherm control.
Product Categories
Our Perodox® organic peroxide portfolio is organized into five structural families, each optimized for specific thermoset curing and polymerization applications.
Featured Products
Key organic peroxide products trusted by composite manufacturers worldwide.
Perodox® MEKP
Methyl ethyl ketone peroxide · CAS 1338-23-4. Room-temperature UPR curing agent.
Read more →Perodox® L75 / 50PS
Benzoyl peroxide · CAS 94-36-0. Versatile BPO for ambient-temperature curing.
Read more →Perodox® C (TBPB)
tert-Butyl peroxybenzoate · CAS 614-45-9. High-temp initiator.
Read more →Perodox® 14 (BIPB)
Di(tert-butylperoxyisopropyl)benzene · CAS 25155-25-3. Crosslinking agent.
Read more →Perodox® K (CHP)
Cumyl hydroperoxide · CAS 80-15-9. High-temp curing alternative.
Read more →Perodox® 21 (TBPEH)
tert-Butyl peroxy-2-ethylhexanoate · CAS 3006-82-4. Low-temp initiator.
Read more →Perodox® MEKP Plus
Enhanced MEKP formulation with improved storage stability and cure profile.
Read more →Perodox® TBPC
tert-Butyl peroxycarbonate. High-purity initiator for acrylic polymerization.
Read more →Technology & Expertise
Our technical capabilities span the full lifecycle of organic peroxide application in thermoset composites.
Gel Time & Cure Profiling
Precise characterization of gel time, peak exotherm, and cure profile under your specific resin and processing conditions.
Formulation Optimization
Custom peroxide blends and accelerator packages to match your desired pot life, cure speed, and final mechanical properties.
Temperature-Controlled Logistics
Full UN 5.2 / IMDG-compliant global cold-chain shipping with real-time temperature monitoring to preserve product quality.
Downloads
Technical documentation for our thermoset composite product range.
Get in Touch
Our technical team is ready to help you select the right organic peroxide system for your thermoset composite application. Contact us for product recommendations, sample requests, or formulation support.
Contact Our Experts
For more information about our products and solutions, please contact our experts. We look forward to hearing from you.