Synthetic Rubber Designations

Chemical Designations - Synonyms Plastic latex Synthetic rubber latex Chemical Formula Not pertinent. 

Many polymer items are designed specifically to make contact with other materials. Where surface contact is concerned, two key properties are coefficient of friction and abrasion resistance. Polymers used in such applications include ultra high molecular weight polyethylene, polyacctal, fluorinated polymers, and natural and synthetic rubbers. Examples that we routinely come across include furniture upholstery, bushings and gears in office equipment, and bicycle tires. Industrial uses include the outer cover of electrical cables, and pipes that convey abrasive liquids such as slurries and powders. 

Do not use quaternary ammonium compounds in products designed to clean cement, synthetic rubber, and aluminum because of possible surface damage. 

Grove s synthesis org chem Production of alkyl chlorides by passing hydrochloric acid into an alcohol In the presence of anhydrous zinc chloride. grovz sin-th3S3s ) GR-S rubber org chem Former designation for general-purpose synthetic rubbers formed by copolymerization of emulsions of styrene and butadiene used in tires and other rubber products previously also known as Buna-S, currently known as SBR (styrene-butadiene rubber). je ar es. rab ar)... 

Initial attempts to make synthetic rubber similar to NR date back to mid 1800s. Modern synthetic polyisoprene is designed to be similar to natural rubber in structure and properties. Although it has lower green strength, slower cure rates, lower hot tear, and... 

Of special interest for petrochemical and organic synthesis is the implementation of thermodynamically hindered reactions, among which incomplete benzene hydrogenation or incomplete cyclohexene and cyclohexadiene dehydrogenation should be mentioned. Cost-effective methods of cyclohexene production would stimulate the creation of new processes of phenol, cyclohexanol, cyclohexene oxide, pyrocatechol synthesis, cyclohexadiene application in synthetic rubber production, and a possibility for designing caprolactam synthesis from cyclohexene and cyclohexadiene via combined epoxidation. At present, the most... 

For reference, ASTM Elastomer (Rubber) Designations for various synthetic rubbers are given in Table 5.2. 

Addition of 2 to 5 phr of alkyl-phenol resins improve tackiness of EPDM stocks. In blends with other synthetic rubbers such as SBR, the co-curability is an important factor while designing the overall curing system while compounding. The important factors to be considered here is to synchronise the curing speed between two polymers, using studies in oscillating disk rheometer charts. However, blends with styrene-butadiene rubber do not have as much acid resistance as 100% EPDM. 

DIN EN 14879-1 (supersedes VDI 2532) [18] applies to the design and execution of metal constructions to be protected against corrosion. For buildings of reinforced concrete, or concrete and brickwork, VDI 2533 [19] are valid. DIN EN 14879-4 (supersedes VDI 2537[20]) [16] deals with surface protection with layers of natural and synthetic rubber. VDI Guidelines should be referred to in the selection and treatment of the material base for the process industries such as metal and concrete structures and fabrications, as well as in the selection and properties of the protective material, namely rubbers). 

Although the late 1940s was not a time for many dramatic developments, the Chemical Corps was able to issue a new gas mask in 1947. Designated the M9 series, it was an improved version of the M5 mask (Figure 2-43). This mask utilized a superior synthetic rubber composition that worked better in cold weather than the neoprene of the earlier mask.30... 

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