Caoutchouc

Rubber, natural and synthetic, has been used extensively for many years in chemical process plants. Rubber is a product obtained by thermal processing (vulcanization) of a mixture of raw natural synthetic caoutchouc with sulfur. [Pg.122]

Gummi, n. gum (India) rubber, caoutchouc. (For compounds see also under Kautschuk-.) -abf e, m.pl. scrap rubber, -arabicum, gum arable, -art, /. variety of gum, gum kind of rubber. [Pg.197]

Merino. Pat in 1882 in Fr, a mixt designed for coating grains of hygroscopic ingredients of expl mixts, such as nitrates or chlorates, to render them waterproof. It contd the following K chlorate 73, NG 10, sulfur 7, caoutchouc or hard pitch 3, resin or soft pitch l anthracite coal 6% Ref Daniel (1902), 437... [Pg.78]

Rubber is obtained from the juice of various tropical trees, mainly the tree Hevea brasiliensis. The juice is a latex consisting of a dispersion of polymer phase at a concentration of about 35% by mass, together with traces of proteins, sterols, fats, and salts. The rubber is obtained either by coagulation of the latex with acid, either ethanoic or methanoic, or by evaporation in air or over a flame. The material that results from this process is a crumbly, cheeselike substance, sometimes called raw rubber or caoutchouc. In order to... [Pg.19]

Thouez, J.L., Use of powdered waste mbber in mbber blends for aerosol seals. Revue Generale des Caoutchoucs Plastiques, 65-68, 664, 1986. [Pg.1063]

If one end of a slip of Caoutchouc be fastened to a rod of metal or wood, and a weight be fixed at the other extremity. . . the thong will be found to become shorter with heat and longer with cold. [Pg.435]

Bureau de Liaison des Industries du Caoutchouc de L Union Europeenne. [Pg.14]

The name mbber derives from the fact, noted in 1770 by Joseph Priestley the English chemist, that caoutchouc would erase or mb out lead pencil marks. Priestley did not actually name it mbber, but at some time between 1770 and 1778 the term became popular. [Pg.54]

Grades with a limited free copper content are supplied for the pigmentation of rubber. These pigments do not disturb caoutchouc vulcanization and do not affect the resistance of rubber to aging. [Pg.451]

Royal Institution in London. He writes The caoutchouc is exceedingly elastic Bags made of... [Pg.292]

Tire industry copolymer of styrene and butadiene in 1 3 ratio SBR Rubber caoutchouc (isopr. polymer)... [Pg.268]

Goodyear Powder. Black Powder, patented in England in 1865, contd saltpeter, sulfur, charcoal, and a small quantity of caoutchouc or guttapercha... [Pg.763]

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