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1 Whinfield, John Rex
[br]b. 16 February 1901 Sutton, Surrey, Englandd. 6 July 1955 Dorking, Surrey, England[br]English inventor ofTerylene.[br]Whinfield was educated at Merchant Taylors' School and Caius College, Cambridge, where he studied chemistry. Before embarking on his career as a research chemist, he worked as an un-paid assistant to the chemist C.F. Cross, who had taken part in the discovery of rayon. Whinfield then joined the Calico Printers' Association. There his interest was aroused by the discovery of nylon by W.H. Carothers to seek other polymers which could be produced in fibre form, usable by the textile industries. With his colleague J.T. Dickson, he discovered in 1941 that a polymerized condensate of terephthalic acid and ethylene glycol, polyethylene terephthgal-late, could be drawn into strong fibres. Whinfield and Dickson filed a patent application in the same year, but due to war conditions it was not published until 1946. The Ministry of Supply considered that the new material might have military applications and undertook further research and development. Its industrial and textile possibilities were evaluated by Imperial Chemical Industries (ICI) in 1943 and "Terylene", as it came to be called, was soon recognized as being as important as nylon.In 1946, Dupont acquired rights to work the Calico Printers' Association patent in the USA and began large-scale manufacture in 1954, marketing the product under the name "Dacron". Meanwhile ICI purchased world rights except for the USA and reached the large-scale manufacture stage in 1955. A new branch of the textile industry has grown up from Whinfield's discovery: he lived to see most people in the western world wearing something made of Terylene. It was one of the major inventions of the twentieth century, yet Whinfield, perhaps because he published little, received scant recognition, apart from the CBE in 1954.[br]Principal Honours and DistinctionsCBE 1954.Further ReadingObituary, 1966, The Times (7 July).Obituary, 1967, Chemistry in Britain 3:26.J.Jewkes, D.Sawers and R.Stillerman, 1969, The Sources of Invention, 2nd edn, London: Macmillan.LRD -
2 Dickson, J.T.
[br]b. c.1920 Scotland[br]Scottish co-inventor of the polyester fibre, Terylene.[br]The introduction of one type of artificial fibre encouraged chemists to look for more. J.T.Dickson and J.R. Whinfield discovered one such fibre in 1941 when they derived polyester from terephthalic acid and ethylene glycol. Dickson, a 21-year-old Edinburgh graduate, was working under Whinfield at the Calico Printers' Association research laboratory at Broad Oak Print Works in Accrington. He was put onto fibre research: probably in April, but certainly by 5 July 1941, a murky-looking resin had been synthesized, out of which Dickson successfully drew a filament, which was named "Terylene" by its discoverers. Owing to restrictions imposed in Britain during the Second World War, this fibre was developed initially by the DuPont Company in the USA, where it was marketed under the name "Dacron". When Imperial Chemical Industries (ICI) were able to manufacture it in Britain, it acquired the brand name "Terylene" and became very popular. Under the microscope, Terylene appears identical to nylon: longitudinally, it is completely devoid of any structure and the filaments appear as glass rods with a perfectly circular cross-section. The uses of Terylene are similar to those of nylon, but it has two advantages. First, it can be heat-set by exposing the fabric to a temperature about 30°C higher than is likely to be encountered in everyday use, and therefore can be the basis for "easy-care" clothing such as drip-dry shirts. It can be blended with other fibres such as wool, and when pressed at a high temperature the creases are remarkably durable. It is also remarkably resistant to chemicals, which makes it particularly suitable for industrial purposes under conditions where other textile materials would be degraded rapidly. Dickson later worked for ICI.[br]Further ReadingFor accounts of the discovery of Terylene, see: J.R.Whinfield, 1953, Textile Research Journal (May). R.Collins, 1991, "Terylene", Historian 30 (Spring).Accounts of the introduction of svnthetic fibres are covered in: D.S.Lyle, 1982, Modern Textiles, New York.S.R.Cockett, An Introduction to Man-Made Fibres.G.R.Wray, Modern Yarn Production.RLH -
3 Terylene
Synthetic textile fibre produced from a polyester derived essentially from terepthalic acid and ethylene glycol, it is the result of research work initiated by Calico Printers' Association, and carried out in their laboratories by Mr. J. R. Whinfield, assisted by Dr. J. T. Dickson and others. The qualities of polyester, and its potential value for fibre making, were recognised by the C.P.A., and patents covering the inventions were taken out by them. The subsequent research work on the chemical polymer and its conversion into a textile fibre was entrusted to Imperial Chemical Industries, who acquired an exclusive licence covering the whole world outside the U.S.A. From a given sample of the parent polymer it is possible to produce multi-filament yams of widely different characteristics by varying the physical and mechanical operations of the spinning and processing. Thus, for example, it is possible to obtain from the same polymer a yarn of low extensibility, but with outstandingly high strength (8 grams per denier or higher), or one of increased extensibility, but with lower strength. Notable property of " Terylene " is high resistance to light and heat and high initial elastic modulus. -
4 Chemical technology
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5 Synthetic materials
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