NEOPRENE GRT
Polychloroprene
CAS: 9010-98-4
Molecular Formula: C4H5Cl
NEOPRENE GRT - Names and Identifiers
NEOPRENE GRT - Physico-chemical Properties
| Molecular Formula | C4H5Cl |
| Molar Mass | 88.5355 |
| Density | 1.23g/mLat 25°C(lit.) |
| Melting Point | >260 °C |
| Appearance | chunks |
| Color | White to beige |
| Storage Condition | -196°C |
| Physical and Chemical Properties | CR122 chloroprene rubber is beige or light brown flakes or lumps, does not contain mechanical impurities outside talc, no scorch particles. Has good physical and mechanical properties, resistance to sunlight, ozone aging, weather resistance, resistance to chemical reagents, oil resistance, not burn and good electrical properties and other characteristics. CR232 chloroprene rubber is beige flake or block-like, does not contain talcum powder outside the mechanical material, no scorch particles. Excellent storage stability, its processing performance and safety are excellent, its products in addition to the resistance to sunlight, ozone aging, oil and chemical reagents, resistance to burn and other characteristics, it has good heat resistance and low compression deformation. But its vulcanization speed is slow, need to adjust the vulcanization system to solve. CR2441 2442 chloroprene rubber is milky white to light brown blocks, without mechanical impurities other than talc. The crystallization speed is fast, the cohesive force is strong, the adhesive strength is high, and has excellent ozone resistance, weather resistance, grease resistance and non-ignition and other characteristics. CR321 Type 322 chloroprene rubber is generally beige flakes or lumps, no mechanical impurities other than talc, no scorch particles. With good physical and mechanical properties and resistance to sunlight, ozone aging, weather resistance, resistance to chemical agents, oil resistance, no burn, air tightness, resistance to buckling. The electrical insulation property and the tear strength thereof are more excellent than those of the CR121 type. This product has good process performance, easy mastication, mixing and extrusion molding, smooth surface and good appearance. In addition, it also has good processing safety. |
| Use | Used in the manufacture of rubber products such as transport belts, rubber pipes, printing rollers, cables, adhesives, anti-corrosion paints, etc. |
NEOPRENE GRT - Risk and Safety
| Safety Description | 24/25 - Avoid contact with skin and eyes. |
| WGK Germany | 3 |
| RTECS | EI9640000 |
NEOPRENE GRT - Reference Information
| (IARC) carcinogen classification | 3 (Vol. 19, Sup 7) 1987 |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Introduction | Chloroprene Rubber, CA for short, is prepared by emulsion polymerization of 2-chloro-1, 3 butadiene monomer, it can be modified with sulfur and 2, 3-dichloro-1, 3-butadiene. Chloroprene rubber has high tensile strength, heat resistance, light resistance, aging resistance and oil resistance, which are better than natural rubber and butyl rubber. |
| Appearance Properties | The appearance is milky white to beige or light brown flakes or lumps, without mechanical debris other than talc, no scorch particles. Soluble in ethanol, acetic acid, acetone and other organic solvents, slightly soluble in ethylene glycol, water. Polymerization is facilitated in the presence of light, heat, ionizing radiation and catalysts. It generally has a molecular weight of 10 to 200,000, a relative density of 1.15 to 1.25, a glass transition temperature of -45 ° C., a polarity, a regular molecular arrangement and a reversible crystallization property. |
| Application | neoprene is a synthetic rubber. A linear structured α-polymer obtained from 2-chloro-1, 3-butadiene by emulsion polymerization. They not only act as a curing agent, but also enhance the ability to resist thermal aging. Not only in the physical and mechanical properties can be comparable with natural rubber, and natural rubber and other general synthetic rubber is not oil resistance, solvent resistance, oxidation resistance, aging resistance, acid resistance, alkali resistance, heat resistance, fire and flex resistance and other properties. It can be used as both general rubber and special rubber for the manufacture of rubber products such as transport belts, rubber tubes, printing rollers, cables and aircraft tanks. |
| uses | chloroprene rubber is widely used, mainly used for wire and cable sheaths, rubber tubes, oil-resistant rubber products, heat-resistant conveyor belts, printing rubber sticks, rubber dams, sealing strips for construction, Highway joint sealants, bridge bearings, oil field wire waterproof caps, flame retardant rubber products, various sealing ring pads, chemical equipment anti-corrosion linings and Neoprene Adhesives, etc. In recent years, Chloroprene Rubber in building waterproof materials, sealing materials, adhesives, marine development, medical and health, energy development and people's lives have been developed new uses, expand the application field. CR122 chloroprene rubber can be used in the manufacture of rubber products such as wires, cables, oil-resistant rubber plates, rubber pipes, conveyor belts, transmission belts, rubber sealing materials, etc. In addition, CR122 chloroprene rubber is a general-purpose pollution type Chloroprene Rubber, which is particularly suitable for the production of colored or light-colored rubber products. CR232 neoprene can be used in the production of oil-resistant rubber, cable sheath, rubber seals, etc., are widely used in the manufacture of adhesives. CR2441 2442 chloroprene rubber is the basic raw material for the production of adhesive. Its preparation is used for the adhesion of rubber, leather, wood, metal and other materials. CR321 322 type chloroprene rubber is widely used in the manufacture of various cables, Chloroprene cloth wire, ordinary and oil-resistant rubber tube, rubber plate, air duct, various conveyor belts, conveyor belts, tent cloth, rain cloth, oil-resistant rubber boots, various rubber seals, agricultural capsule air cushion, lifeboat, etc. CR322 is more suitable for use in a variety of colored or light colored articles. used in the manufacture of rubber products such as transport belt, rubber hose, printing roller, cable, adhesive, anti-corrosion paint, etc. used in the manufacture of cables, rubber hose, etc, used for shoe upper bonding and PVC plastic floor bonding used for making colored rubber products used for asphalt modification, cement mortar modification, underground engineering, waterproof, fiber treatment, etc. used to make elastic cement, adhesive, etc. used to prepare adhesive can be used as fiber, paper, waterproof coating or coating, and can be used as an adhesive for the manufacture of cables, belt conveyors, etc. for immersion film products |
| production method | chloroprene by emulsion radical polymerization of synthetic rubber, the production process using batch polymerization. With sulfur-thiuram or thiol as the molecular weight regulator, the polymerization temperature is 40-600 ℃, and the conversion rate is about 90%. |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 20:49:11
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