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Polychloroprene Rubber CR

Made in China

Chinese Version
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Rimpex Rubber could supply Polychloroprene Rubber, i.e., CR for international market.


CHLOROPRENE RUBBER TYPE CR121

This products is a general purpose chloroprene rubber of low crystallization rate made by polymerizing the emulsion with sulfur as modifier and petroleum sodium sulfonate as disperser.

1.Characteristics:
This products is characterized by good physico-mechanical performance, sunlight resistance, ozoneageing resistance, weather resistance, chemical reagent resistance, oil resistance, combustion retardancy and better electric performance.

2.Specifications:
In conformity with Standard GB/T14647-93
a.Appearance:Creamy or light-brown flaky or lumpy matter, free from mechanical impurities(except talc powder) and scorched particles.
b.Quality indexes

Item
Index
High Grade
Grade A
Qualified Grade
Mooney Viscosity
CR1211
20-40
41-60
61-75
20-40
41-60
61-75
20-40
41-60
61-75
ML
100℃
CR1212
1+4
CR1213
Tensile Strenth MPa Min
23
22
20
500% Strenching Stress, MPa
1-4
1-5
1-5
Tear Extensibility, %
900
850
800
Scorching Time, min
30-60
Min25
Min20
Volatiles Content% Max
1.3
1.5
1.5
Ash Content% Max
1.3
1.3
1.5

3.Application:
It may be used for making electric wires, cables, lil resisting hoses and boards, coveryer belts, driving belts, rubber sealing materials and other rubber products. In addition, Type CR122 is a non-pollutant general purpose chloroprene rubber and especially suitable for maanufacturing bright-color and light-color rubber products.

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CHLOROPRENE RUBBER TYPE CR232

This products is a non-pollutant type chloroprene rubber of medium crystallization rate, a variety of general purpose chloroprene rubber, made by polymerizing the emulsion with petroleum sodium sulfonate as disperser and non-sulfur modifier as modification agent.

1.Characteristics:
This product is characterized by excellent storage stability, processability and safety property, and its products have sunlight resistance, ozoneageing resistandce, oil resistance, chemical reagent resistance and combustion retardancy as well as heat resistance and less compression deformation.But its vulcanization rate is slow and should be solved by adjusting the vulcanization system.

2.Specifications:
In conformity with Standard Q/SHJS 02, 01-91.
a.Appearance:Creamy flaky or lumpy matter from mechanical impurities (except talc powder) and scorched particles.
b.Technical index

Item
Index
Tearing Strength Mpa Min
14.7
Tear Extensibility, % Min
700
Tension Set Max
20
Plasticity
0.4-0.6
Mooney Scorch MS 120℃ min Min
13
1+5
Heating Loss% Max
1.5
Ash Content % Max
1.3
Mooney Viscosity ML 100℃
CR2321
CR2322
CR2323
1+4
35-45
45-55
55-65

3.Application:
It can be used for manufacturing oil-resistant rubber hoses and rubber boards, cable jackets, rubber sealing parts, etc, and is also widely used in making adhesive.

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CHLOROPRENE RUBBER TYPE CR321 322

This product is a general purpose chloroprene rubber of low crystallization rate made by polymerizing the emulsion with sulphur and mokifier D(biisopropyl Xanthogenate) as mixed modifier and petroleum sodium sulfonate as disperser, and with pollutant and non-pollutant antiageing agents used separately.

1.Characteristics:
This product is characterized by good physico-mechanical performances, sunlight resistance, weather resistance, ozoneageing resistance, chemical regent resistance, oil resistance, combustion retardancy, air impermeability, flexibility resistance, electric insulation, and more excellent tearing strength than CR121.It has good process performance, and is easy to plasticate, mix-melt and extrude to form.It also has smooth surface, good appearnce and satisfactory processing safety.

2.Specifications:
In conformity with Standard GB/T15257-94:
a.Appearance:Creamy flaky or lumpy matter generally, free from mechanical impurities (except talc powder) and scorched particles.

Item
Index
High Grade
Grade A
Qualified Grade
Mooney Viscosity
 
CR3211, CR3221
25-40
41-60
61-80
25-40
41-60
61-80
25-40
41-60
61-80
ML
100℃
CR3212, CR3222
1+4
CR3213, CR3223
Tensile Strength MPa Min
26
22
20
500% Strenching Stress, MPa
1-5
1-5
1-5
Tear Extensibility, % Min
800
780
750
Scorching Time, MSts, min Min
25
20
15
Volatiles Content, % Max
1.5
1.5
1.5
Ash Content% Max
1.3
1.3
1.5

3.Application:
Due to its excellent comprehensive performances, this product is widely applied to making of various cables, chloroprene cloth wires, plain and oil resisting hoses, rubber boards, air ducts, conveyer belts, driving belts, tent cloth, waterproof cloth, oil resisting rubber boots, sealing parts, agricultural encapsutated air cushions, lifeboats, lifeboats, etc. CR322 is more suitable for various bright color or lightcolor.

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CHLOROPRENE RUBBER TYPE CR2441 2442

This product is a special chloroprene rubber of high-crystallization rate made by polymerizing the cmulsion with nonsulfur modifier as modifying agent and with Lomar Pw as disperser.

1.Characteristics:
This product is characterizcd by high crystallization ratc, strong cohesion, comparatively high adhesion strength and excellent ozonc resisance, weather resistance, oil resistance and combustion retardancy.

2.Specifications:
In conformity with Standard ZBG3500-88
a.Appearance:Milky white to light brown lumpy matter free from mechanical impurities except talc powder.
b.Technical Indexes

Item
Index
High Grade
Grade A
Qualified Grade
Mooney Viscosity
2441
2442
2441
2442
2441
2442
MS
100℃
40±3
48±4
40±3
48±4
40±5
50±5
2+2.5
Peeling Strength N/cm Min
85
75
70
Volatiles Content % Max
1.0
1.3
1.5
Ash Content% Max
0.5
1.0
1.5

Product Specifications:

Item
Index
Brookfield Viscosity In 15% Toluene Solution
(mPa.s at 23°C)
CR-2441
CR-2442
CR-2443
CR-2444
2000±1000
5000±2000
8000±1000
10000±1000
Ash Content % Max
0.5
Volatiles Content % Max
1.0
Peeling Strongth N/cm Min
85

3.Application:
This product is a basic raw material for adhesive production, and its preparation can be applied to adhesion for rubber, timber and metal.

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CATION CHLORENE RUBBER LATEX TYPE CRL 50LK

This product is a chloroprene rubber latex of non-sulfur modification and medium crystallization rate made by polymerizing the emulsion with chloroprene as mononer and positive soap as enulsifier.

1.Characteristics:
This latex is a positive one, of which the micelle has positive charge.It has a stable quality in acid medium, and does not coagulates under the action of Na+ and Ca2+ ions(while coagulates in alcohol, It is characterized by good mechanical strength and satisfactory flame resistance and combustion retardancy as well as better adhesion with cement, fider and steel plate, It will be livered when the temperatrte is lowed to below-10°C, and restored to its original state when the temperature has beeh gone up again, but it will coagulate and fail to be restored to emulsion state if stored at lower tenperature for long time.

2.Specifications:
In conformity with Standard ZBG 35002-88
a.Appearance:White enulsion
b.Technical Index

Item
Index
High Grade
Grade A
Qualified Grade
Total Solid Content % Min
50
48
47
Viscosity, mPa.s
10-35
10-45
10-55
Surface Tension, N/m x10-3
20-40
20-50
20-50
Density, g/cm3 Min
1.100
1.085
1.080

3.Application:
When mixed with cement and sand, it can make the mortar change its property and become elastic cement which cah be used as coating on the decks of ships for preventing fire and retarding conbustion as well as reducing noise and vibration and may also be applied to treatment of walls and floors in building trade as well as to the water-proof layer and prevention of fiber soaking and asphalt property change in underground works.

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Material Safety Data Sheet


The MSDS format adheres to the standards and regulatory requirements of the Peoples Republic of China and may not meet regulatory requirements in other countries.
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POLYCHLOROPRENE RUBBER ALL IN SYNONYM LIST
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CHEMICAL PRODUCT
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Tradenames and Synonyms
CR1211 CR1212 CR1213
CR2321 CR2322 CR 2323
CR2441 CR2442 CR2443 CR2444
CR3221 CR3222 CR3223
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COMPOSITION/INFORMATION ON INGREDIENTS
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Components
Material CAS Number %
TALC, CONTAINING NO ASBESTOS FIBERS <1
2-CHLORO-1, 3-BUTADIENE POLYMERS & COPOLYMERS >98
WATER <1
Components (Remarks)
Material is not known to contain Toxic Chemicals under Section 313 of Title III of the Superfund Amendments and Reauthorization Act of 1986 and 40 CFR part 372.
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HAZARDS IDENTIFICATION
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Potential Health Effects
ADDITIONAL HEALTH EFFECTS
Before using polychloroprene rubbers, read "Handling Precautions for Polychloroprene rubber.
POLYCHLOROPRENE RUBBER
ACUTE OR IMMEDIATE EFFECTS: ROUTES OF ENTRY AND SYMPTOMS
INGESTION One type of Polychloroprene rubber was tested for oral toxicity in rats. The LD-50 is in excess of 20, 000 milligrams per kilogram body weight which is low toxicity. Other types of Polychloroprene rubber are
predicted to have the same low toxicity. Ingestion is not a probable route of exposure. SKIN Patch tests were run with four types of Polychloroprene rubber on human volunteers. No skin reactions were shown. Results are predicted to be similar for the types of polychlororene rubber in this MSDS. EYE Mechanical irritation only.
INHALATION At processing temperatures above 200 C (392 F), fumes irritating to the eyes, nose, and throat may be produced. This exposure may result in reddening, tearing, and itching of the eyes and soreness in the nose and throat together with coughing.
CHRONIC EFFECT None are known.
TALC
Short-term over-exposure by inhalation to Talc may cause irritation of the nose, throat and lungs with cough, difficulty breathing or shortness of breath. Long-term over-exposure may lead to chronic lung disease with impaired lung function and abnormal chest x-rays. Increased susceptibility to the effects of Talc may be observed in persons with pre-existing disease of the lungs.
Carcinogenicity Information
None of the components present in this material at concentrations equal to or greater than 0.1% are listed by IARC, NTP, OSHA or ACGIH as a carcinogen.
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FIRST AID MEASURES
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First Aid
INHALATION
If inhaled, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
Call a physician.
SKIN CONTACT
The compound is not likely to be hazardous by skin contact but cleansing the skin after use is advisable.
If molten material gets on skin, cool rapidly with cold water. Do not attempt to remove material from skin. Obtain medical treatment for thermal burn.
EYE CONTACT
In case of contact, immediately flush eyes with plenty of water for at least 15 minutes. Call a physician.
INGESTION
Not a probable route. However, in case of accidental ingestion, call a physician.
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FIRE FIGHTING MEASURES
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Flammable Properties
Flash Point : >260 C (>500 F)
Method : Open cup
Fire and Explosion Hazards:
HAZARDOUS COMBUSTION PRODUCTS: Complete combustion gives hydrogen chloride, carbon dioxide, sulfur dioxide and water. Incomplete combustion gives in addition carbon monoxide, organic acids, aldehydes, and alcohols. Extinguishing Media Water, Foam, Dry Chemical, CO2.
Fire Fighting Instructions
Wear self-contained breathing apparatus. Wear full protective equipment.
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ACCIDENTAL RELEASE MEASURES
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Safeguards (Personnel)
NOTE: Review FIRE FIGHTING MEASURES and HANDLING (PERSONNEL)
sections before proceeding with clean-up. Use appropriate
PERSONAL PROTECTIVE EQUIPMENT during clean-up.
Spill Clean Up
Recover undamaged and minimally contaminated material for reuse and reclamation.
Scrape up spilled polymer. Contaminated surfaces can be cleaned with a solvent.
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HANDLING AND STORAGE
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Storage
Store in a cool place. Keep container tightly closed.
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EXPOSURE CONTROLS/PERSONAL PROTECTION
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Engineering Controls
Use local ventilation to control fumes from hot processing.
Personal Protective Equipment
EYE/FACE PROTECTION
Wear safety glasses. Wear coverall chemical splash goggles and face shield when possibility exists for eye and face contact due to splashing or spraying of molten material. A full face mask respirator provides protection from eye irritation.
RESPIRATORS
A NIOSH/MSHA approved air purifying respirator with an organic vapor cartridge with a dust/mist filter may be permissible under certain circumstances where airborne concentrations are expected to exceed exposure limits. Protection provided by air purifying respirators is limited. Use a positive pressure air supplied respirator if there is any potential for an uncontrolled release, exposure levels are not known, or any other circumstances where
air purifying respirators may not provide adequate protection.
PROTECTIVE CLOTHING
If there is potential contact with hot/molten material, wear heat resistant clothing and footwear.
(EXPOSURE CONTROLS/PERSONAL PROTECTION - )
Exposure Guidelines
Applicable Exposure Limits
TALC, CONTAINING NO ASBESTOS FIBERS
PEL (OSHA) : Respirable dust, 1/2*(80 mg/m3 % SiO2) as 8 Hr TWA
TLV (ACGIH) : 2 mg/m3, respirable dust, 8 Hr. TWA, A4
PHYSICAL AND CHEMICAL PROPERTIES
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Physical Data
Melting Point : NA
% Volatiles : NA
Solubility in Water : Negligible
Odor : Mild characteristic
Form : chips
Color : Off white to tan
Specific Gravity : NA
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STABILITY AND REACTIVITY
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Chemical Stability
Stable at normal temperatures and storage conditions.
Conditions to Avoid
Temperatures above 200 C (392 F) .
Incompatibility with Other Materials
None reasonably foreseeable.
Decomposition
Hazardous gases or vapors can be released, including carbon monoxide, hydrogen chloride (HCl), organic acids, aldehydes, alcohols.
Polymerization
Polymerization will not occur.
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TOXICOLOGICAL INFORMATION
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Animal Data
TALC
Talc
Oral LD50: 920 mg/kg in rats
Inhalation 5 hour ALC: > 22 mg/L in rats
Long-term exposure by ingestion to Talc caused no significant decrease in life span.
A single exposure by inhalation to high doses of Talc caused irregular respiration and lacrimation but no evidence of an inflammatory reaction. Repeated exposure caused no adverse effects on survival or histological changes. Long-term exposure in rats caused chronic inflammation, impaired pulmonary function and histopathological changes of the lungs. One lifetime inhalation study reports an increased incidence of lung and adrenal tumors in rats exposed to Talc. The lung tumors and chronic inflammation occurred at dust levels which overwhelmed
the animals lung clearance mechanism and, therefore, are of questionable biological relevance for man. The adrenal tumors are unlikely to be a direct effect of Talc exposure and are of questionable relevance. No increases in tumors were observed in mice. Talc has not caused developmental toxicity in animals. No animal data are available to define the reproductive toxicity of Talc. Tests have shown that Talc does not cause genetic damage in
bacterial or mammalian cell cultures, or in animals. Animal data indicate that Talc does not cause permanent genetic damage in reproductive cells of mammals (does not cause heritable genetic damage).
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ECOLOGICAL INFORMATION
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Ecotoxicological Information
AQUATIC TOXICITY:
No information is available. Toxicity is expected to be low based on insolubility in water.
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DISPOSAL CONSIDERATIONS
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Waste Disposal
Preferred options for disposal are (1) recycling, (2) incin- eration with energy recovery, and (3) landfill. The high fuel value of this product makes option 2 very desirable for material that cannot be recycled. Treatment, storage, transportation, and disposal must be in accordance with applicable federal,
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TRANSPORTATION INFORMATION
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Shipping Information
DOT
Proper Shipping Name : Not regulated.
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OTHER INFORMATION
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The data in this Material Safety Data Sheet relates only to the specific material designated herein and does not relate to use in combination with any other material or in any process.

This information is based upon technical information believed to be reliable. It is subject to revision as additional knowledge and experience is gained.
End of MSDS

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