Explain the difference between Buna-N and Buna-S. Ans: Both Buna-N and Buna-S are synthetic rubber and are co-polymers in nature. For example, nylon 6, 6 is formed by the condensation of ... with another radical to form the polymerised product. Glyptal polymer is obtained from glycol by reacting with (a) malonic acid (b) phthalic acid (c) maleic acid (d) terephthalic acid. B) Orlon done clear ... × For free video lectures fill in the form below and we will get back to you. Anchor Rubber Products custom manufactures a complete line of rubber sheet including silicone rubber, viton, nitrile, sponge rubber, foam and plastics. They are strong, hypoallergenic, non-absorbent, and mildew-resistant fabrics with high resistance to stretching,and degradation by chemical bleaches and to abrasion. 15.5. Nylon - 66 is a polyamide of hexamethylene diamine , (CH2)6(NH2)2 and adipic acid , (CH2)4(COOH)2 . It is copolymer and has ester linkage. C) done clear. Question 10. Addition polymers: Polyvinyl chloride, Polythene Condensation polymers: Terylene, Bakelite 5. Condensation polymers : Terylene, bakelite. The examples are terylene (dacron), nylon 6, 6, nylon 6, etc. Comparing with fiberglass safety helmets, this one is easier to manufacture only by injection molding which can bring you a considerable cost saving.. Polyester resins are known for their excellent combination of properties such as mechanical, thermal, chemical resistance as well as dimensional stability. Styrene is a building-block chemical used in the manufacture of many products that have improved the quality of everyday life. They differ in their constituents. Answer: ... (Buna-S) and 1, 3-butadiene and acrylonitrile (Buna-N). The polyester is used in the manufacturing of all kinds of clothes and home furnishings like the bedspreads, the sheets, the pillows, the furniture, the carpets, and the curtains.. Terylene [ICI], along with Dacron® [DuPont] in the U.S, are the first commercially marketed polyester fibers. Name the monomers of Terylene and Buna-N? We are a leading supplier and fabricator of rubber and sponge strips, gaskets, rolls and sheet stock. Dacron is the registered name for polyester material by Dupont. Here small monomer units are arranged one behind the other so as to form a chain. ABS safety helmets are made of quality acrylonitrile butadiene styrene, a common thermoplastic material with excellent impact resistance and toughness. Terylene,Bakelite, Polyvinyl chloride,Polythene. D) ... Acrylonitrile forms [BHU 1995] A) Terylene done clear. A) done clear. Features: Manufactured from quality and tough ABS material. Worldwide, about 60% of all styrene becomes polystyrene — a plastic which comes in several forms, including solid, foam, and film. How does the presence of double bonds in rubber molecules influence their structure and reactivity? Call today! Question 34. Question 33. The addition polymerisation of acrylonitrile in presence of a This step is called the chain terminating step. Buna-N: Constituents are : buta-1, 3-diene and acrylonitrile. The monomeric units of terylene are glycol and which of the following . The monomers used are lactic acid and glycolic acid. For the formation of terylene, the number of moles of ethylene glycol required per mole of terephthalic acid is (a) 1 (b) 2 (c) 3 (d) 4. Buna-S: Constituents are : buta-1, 3-diene, and styrene. Dextron is a polyacetic acid polyglycolic acid polymer. (Each reactant has six-carbon chain , hence trade code (66) is used) B) done clear. Explain the difference between Buna – N and Buna – S Buna – N is a co-polymer of 1,3 – Butadiene and Acrylonitrile Synthesis of Buna –N: Polyethylene terephthalate (PET or PETE) is a general-purpose thermoplastic polymer which belongs to the polyester family of polymers. 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