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1 purifying material
очистной материал; очищающее средствоThe English-Russian dictionary general scientific > purifying material
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2 purifying material
Нефть: очистной материал, очищающее средство -
3 purifying material
< proc> ■ Reinigermasse f -
4 purifying material
Англо-русский словарь нефтегазовой промышленности > purifying material
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5 purifying material
• masa za prečišćavanje -
6 purifying material
masa oczyszczająca do gazówEnglish-Polish dictionary for engineers > purifying material
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7 purifying material
1) очистной материал; 2) очищающее средствоEnglish-Russian dictionary of chemistre > purifying material
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8 gas-purifying material
The English-Russian dictionary of the Pulp and Paper Industry > gas-purifying material
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9 purifying
1. очистнойpurifying material — очистной материал; очищающее средство
2. очистка; очищающий; очистной; очищениеpurifying agent — очиститель; очищающее средство
Синонимический ряд:1. cleansing (noun) ablution; catharsis; cleansing; expurgation; lavation; purgation; purification; refinement2. cleaning (verb) clarifying; cleaning; cleansing; expurgating; purging; refining -
10 purifying
1. очищение; рафинирование2. очищающий; рафинирующийpurifying agent — очиститель; очищающее средство
purifying material — очистной материал; очищающее средство
The English-Russian dictionary general scientific > purifying
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11 Viscose
Viscose was discovered by two English chemists, Charles F. Cross and E. J. Be van, working in collaboration at Kew, near London, who found that when cellulose was treated with disulphide of carbon in the presence of caustic soda, it was converted into a golden yellow plastic compound which dissolved readily in water. A solution of the plastic was of such viscosity that it was named " viscose," a name that was destined to become world famous, seeing that round about 88 per cent of the world production of rayon is now made by the viscose process. In 1892 Cross and Bevan were granted a patent on the viscose process and it was applied to many purposes before the production of a textile thread was successfully accomplished. Fundamentally, the manufacture of viscose rayon is fairly simple. The raw material may be wood pulp, pulp from cotton linters, or a mixture of the two. The greater part of the world's viscose is made from wood pulp. Viscose rayon manufacture comprises seven distinct treatments as follows: - 1. Making and purifying the cotton or wood pulp which forms the cellulose base. 2. Caustic soda treatment of the cellulose base thereby forming alkali cellulose. 3. Treatment of alkali cellulose with carbon disulphide, forming cellulose xanthate. 4. Dissolving the cellulose xanthate in weak caustic soda to form cellulose solution or viscose. 5. Spinning viscose into yarn. 6. Bleaching, purification and finishing of the yarn. 7. Preparing the yarn for weaving and knitting. -
12 Hyatt, John Wesley
[br]b. 28 November 1837 Starkey, New York, USAd. 10 May 1920 Short Hills, New Jersey, USA[br]American inventor and the first successful manufacturer of celluloid.[br]Leaving school at the age of 16, Hyatt spent ten years in the printing trade, demonstrating meanwhile a talent for invention. The offer of a prize of $10,000 for finding a substitute for ivory billiard balls stimulated Hyatt to experiment with various materials. After many failures, he arrived at a composition of paper flock, shellac and collodion, which was widely adopted. Noting the "skin" left after evaporating collodion, he continued his experiments, using nitrocellulose as a base for plastic materials, yet he remained largely ignorant of both chemistry and the dangers of this explosive substance. Independently of Parkes in England, he found that a mixture of nitrocellulose, camphor and a little alcohol could, by heating, be made soft enough to mould but became hard at room temperature. Hyatt's first patent for the material, celluloid, was dated 12 July 1870 (US pat. 105338) and was followed by many others for making domestic and decorative articles of celluloid, replacing more expensive natural materials. Manufacture began at Albany in the winter of 1872–3. In 1881 Hyatt and his brother Isiah Smith floated the Hyatt Pure Water Company. By introducing purifying coagulants into flowing water, they avoided the expense and delay of allowing the water to settle in large tanks before filtration. Many towns and paper and woollen mills adopted the new process, and in 1891 it was introduced into Europe. During 1891–2, Hyatt devised a widely used type of roller bearing. Later inventions included a sugar-cane mill, a multistitch sewing machine and a mill for the cold rolling and straightening of steel shafts. It was characteristic of Hyatt's varied inventions that they achieved improved results at less expense.[br]Principal Honours and DistinctionsSociety of Chemical Industry Perkin Medal 1914.Bibliography12 July 1870, US patent no. 105,338 (celluloid).Further ReadingObituary, 1920, Chem. Metal. Eng. (19 May).J. Soc. Chem. Ind. for 16 March 1914 and J. Ind. Eng. Chem. for March 1914 carried accounts of Hyatt's achievements, on the occasion of his award of the Perkin Medal of the Society of Chemical Industry in that year.LRD
См. также в других словарях:
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