Keliren
Keliren – Leading Chlorinated Polyethylene (CPE) Manufacturer in China
Keliren, established in 1999, stands as a premier national high-tech enterprise headquartered in Hangzhou, China, specializing in the research, development, production, and global distribution of advanced chlorinated polymers and high-performance processing aids.
Renowned as one of China’s leading chlorinated polyethylene (CPE) manufacturers, Keliren delivers innovative, high-quality solutions tailored for demanding industrial applications. The company’s flagship product portfolio includes:
CPE Resins for PVC Impact Modification – significantly enhancing toughness and processability of rigid PVC compounds
CPE Resins for Flame-Retardant ABS Modification – improving impact strength and fire resistance in engineering plastics
High-efficiency Crosslinking Agents including Triallyl Isocyanurate (TAIC) and Triallyl Cyanurate (TAC)
Operating two modern production bases — Hangzhou Keliren Chemical Co., Ltd. and Jiangsu Keliren New Materials Co., Ltd. — the company achieves an annual capacity of 200,000 tons of CPE, 30,000 tons of rubber compounds and sheets, and 4,000 tons of processing aids. All facilities feature full DCS automation, ISO 9001 & ISO 14001 certification, and advanced ERP systems to guarantee superior safety, consistency, and efficiency.
Keliren’s products lead the domestic market and are exported to over 30 countries, earning strong international reputation for quality and reliability. A professional technical service team provides end-to-end support worldwide, ensuring customers maximize performance in wire & cable, automotive, construction, and flame-retardant applications.
Guided by the principles of “high technology, superior quality, maximum efficiency, and sustainable growth,” Keliren remains committed to integrity, innovation, and customer success. Through continuous R&D and market-oriented development, Keliren expands application fields and grows together with its global partners.
Chlorinated Polyethylene Resin
Keliren® chlorinated polyethylene (CPE) thermoplastic resin is a high-performance impact modifier widely trusted in PVC extrusion and injection molding applications, including PVC profiles, pipes, pipe fittings, sheets, siding, and window frames.
By incorporating just a small dosage of Keliren® CPE resin, manufacturers achieve:
Dramatic improvement in impact strength of rigid and semi-rigid PVC compounds
Enhanced processing fluidity and melt flow for faster extrusion and molding cycles
Superior low-temperature toughness and ductility
Excellent weather and UV resistance for long-lasting outdoor performance
Outstanding chemical and oil resistance
High filler acceptance, enabling cost-effective formulations
Exceptional compatibility with PVC and other polymers
These advanced properties make Keliren® CPE the preferred choice for high-quality PVC building materials, automotive components, wire and cable sheathing, and industrial profiles requiring durability and reliability in demanding environments.
With proven performance backed by consistent quality and technical support, Keliren® chlorinated polyethylene sets the industry benchmark for impact modification and processing enhancement in rigid PVC applications worldwide.
| Chlorine content | Unit | CPE132C | CPE1135C | CPE135C | CPE235C | CPE142C | CPE6325 | CPE3610 | CPE3605 | Method |
|---|---|---|---|---|---|---|---|---|---|---|
| Chlorine content | Wt% | 32±1 | 35±1 | 35±1 | 35±1 | 40±1 | 36±1 | 36±1 | 36±1 | GB/T9872 |
| Shore hardness | Shore A | ≤60 | ≤57 | ≤57 | ≤60 | ≤65 | ≤60 | ≤60 | ≤60 | GB/T531 |
| Tensile strength | MPa | ≥8.0 | ≥8.5 | ≥8.5 | ≥8.5 | ≥8.0 | ≥8.5 | ≥8.5 | ≥8.5 | GB/528 |
| Elongation at break | % | ≥800 | ≥800 | ≥800 | ≥800 | – | ≥600 | ≥600 | ≥600 | GB/528 |
| Application | – | FR-ABS, Flexible PVC | FR-ABS, Flexible PVC, PE film | FR-ABS, Flexible PVC, PE film | FR-ABS, Impact modifier | FR-ABS, PE film | Impact modifier, used in high-speed extrusion, PVC | Impact modifier, used in high-speed extrusion, PVC | Impact modifier, PVC | – |
| Performance | – | Low residual crystalline and good processing flowability | Low residual crystalline and good processing flowability | Low residual crystalline and good processing flowability | Moderate residual crystalline, can be stored in silo | Good processing flowability and outstanding flame resistance | Excellent processing flowability | Much outstanding processing flowability | Good processing flowability and good impact modification performance | – |
Co-crosslinking Agent (TAIC)
TAIC is a light yellow liquid or crystal at room temperature with a melting point of 17-27℃ and a specific gravity of 1.155. TAIC is insoluble in water and soluble in aromatics, ethanol, acetone and halogenated hydrocarbons. TAIC is a triazine ring multifunctional olefin monomer, which can be self-polymerized or homopolymerized and cross-linked with various olefins, and can undergo various characteristic reactions of aliphatic olefins. TAIC is stable at room temperature and can be stored stably for a long time.
| Item | Method | KB-I | KB-0 | KB-S | K-70 | K-50 |
|---|---|---|---|---|---|---|
| General grade | Special grade | Fine grade | ||||
| Appearance | Visible observation | Light yellow liquid | Light yellow liquid | Colorless liquid | White powder | White powder |
| Content (%) | GC | ≥97 | ≥98.5 | ≥99 | 70±1 | 50±1 |
| Acid value (mgKOH/g) | Q/HKH | ≤0.5 | ≤0.3 | ≤0.3 | ||
| Melting point (℃) | DSC | 17-26 | 23-27 | 23-27 | ||
| Moisture (%) | Karl Fischer method | ≤0.1 | ≤0.1 | ≤0.1 | ||
| Chroma (APHA) | Pt-Co method | ≤50 | ≤30 | ≤30 | ||
| Specific gravity (23℃, g/cm³) | Gravimeter | 1.12-1.18 | 1.14-1.17 | 1.14-1.17 | ||
| SiO₂ (%) | – | – | – | – | 30±1 | 50±1 |
| Bulk density (g/cm³) | – | – | – | – | 0.45-0.55 | 0.4-0.5 |
Co-crosslinking Agent (TAC)
TAC is a light yellow to colorless liquid or crystal at room temperature with a melting point of 25-27℃, a density of 1.1133 g/ml (at 30℃), a viscosity of 1.26×10-2 Pa•s (30℃) and a refractive index of 1.5049 (25℃). TAC is hardly soluble in water and soluble in ethanol, acetone, heptane, petroleum ether, solvent oil, soybean extract oil, halogenated hydrocarbon, and the like. TAC is stable at room temperature and can be stored stably for a long time.
| Item | Method | TA-G | TA-R | TA-70 | TA-50 |
|---|---|---|---|---|---|
| General grade | Fine grade | ||||
| Appearance | Visible observation | Light yellow liquid | Colorless liquid | White powder | White powder |
| Content (%) | GC | ≥98.0 | ≥99.5 | 70±1 | 50±1 |
| Acid value (mgKOH/g) | Q/HKH | ≤0.3 | ≤0.3 | ||
| Melting point (℃) | DSC | 25-27 | 25-27 | ||
| Moisture (%) | Karl Fischer method | ≤0.1 | ≤0.1 | ||
| Chroma (APHA) | Pt-Co method | ≤50 | ≤30 | ||
| Specific gravity (23℃, g/cm³) | Gravimeter | 1.100-1.115 | 1.100-1.115 | ||
| SiO₂ (%) | – | – | – | 30±1 | 50±1 |
| Bulk density (g/cm³) | – | – | – | 0.35-0.45 | 0.30-0.40 |